Adding upstream version 8.32.upstream/8.32upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

503 files changed, 79341 insertions, 0 deletions

diff --git a/gnulib-tests/Makefile.am b/gnulib-tests/Makefile.am
new file mode 100644
index 0000000..edaa0a7
--- /dev/null
+++ b/gnulib-tests/Makefile.am
@@ -0,0 +1,20 @@
+include gnulib.mk
+
+AM_CFLAGS = $(GNULIB_TEST_WARN_CFLAGS) $(WERROR_CFLAGS)
+
+# A few tests are inherently warning-evoking.
+# In the typical case where we use -Werror, exempt the few offenders.
+
+# test-xvasprintf.c: In function 'test_xasprintf':
+# test-xvasprintf.c:100: error: format not a string literal and no \
+#   format arguments [-Wformat-security]
+test_xvasprintf_CFLAGS = $(AM_CFLAGS) \
+  `test -n '$(WERROR_CFLAGS)' && echo ' -Wno-format-security'`
+
+# test-lock.c: In function 'lock_mutator_thread':
+# test-lock.c:148: error: cast from function call of type 'pthread_t' to \
+#   non-matching type 'void *' [-Wbad-function-cast]
+test_lock_CFLAGS = $(AM_CFLAGS) \
+  `test -n '$(WERROR_CFLAGS)' && echo ' -Wno-bad-function-cast'`
+test_tls_CFLAGS = $(AM_CFLAGS) \
+  `test -n '$(WERROR_CFLAGS)' && echo ' -Wno-bad-function-cast'`
diff --git a/gnulib-tests/Makefile.in b/gnulib-tests/Makefile.in
new file mode 100644
index 0000000..ff8589b
--- /dev/null
+++ b/gnulib-tests/Makefile.in
@@ -0,0 +1,10267 @@
+# Makefile.in generated by automake 1.16.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2018 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Copyright (C) 2002-2020 Free Software Foundation, Inc.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this file.  If not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License,
+# this file may be distributed as part of a program that
+# contains a configuration script generated by Autoconf, under
+# the same distribution terms as the rest of that program.
+#
+# Generated by gnulib-tool.
+
+
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
+  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+    true; \
+  else \
+    false; \
+  fi; \
+}
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
+  { \
+    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+  }; \
+  for flg in $$sane_makeflags; do \
+    test $$skip_next = yes && { skip_next=no; continue; }; \
+    case $$flg in \
+      *=*|--*) continue;; \
+        -*I) strip_trailopt 'I'; skip_next=yes;; \
+      -*I?*) strip_trailopt 'I';; \
+        -*O) strip_trailopt 'O'; skip_next=yes;; \
+      -*O?*) strip_trailopt 'O';; \
+        -*l) strip_trailopt 'l'; skip_next=yes;; \
+      -*l?*) strip_trailopt 'l';; \
+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
+    esac; \
+    case $$flg in \
+      *$$target_option*) has_opt=yes; break;; \
+    esac; \
+  done; \
+  test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+TESTS = test-accept$(EXEEXT) test-set-mode-acl.sh \
+	test-set-mode-acl-1.sh test-set-mode-acl-2.sh test-copy-acl.sh \
+	test-copy-acl-1.sh test-copy-acl-2.sh test-alignof$(EXEEXT) \
+	test-alloca-opt$(EXEEXT) test-areadlink$(EXEEXT) \
+	test-areadlink-with-size$(EXEEXT) test-areadlinkat$(EXEEXT) \
+	test-argmatch$(EXEEXT) test-argv-iter$(EXEEXT) \
+	test-arpa_inet$(EXEEXT) test-base32$(EXEEXT) \
+	test-base64$(EXEEXT) test-binary-io.sh test-bind$(EXEEXT) \
+	test-bitrotate$(EXEEXT) test-btowc1.sh test-btowc2.sh \
+	test-byteswap$(EXEEXT) test-c-ctype$(EXEEXT) test-c-strcase.sh \
+	test-calloc-gnu$(EXEEXT) test-canonicalize$(EXEEXT) \
+	test-chdir$(EXEEXT) test-chown$(EXEEXT) test-cloexec$(EXEEXT) \
+	test-close$(EXEEXT) test-closein.sh test-connect$(EXEEXT) \
+	test-count-leading-zeros$(EXEEXT) test-md5$(EXEEXT) \
+	test-sha1$(EXEEXT) test-sha256$(EXEEXT) test-sha512$(EXEEXT) \
+	test-ctype$(EXEEXT) test-di-set$(EXEEXT) \
+	test-dirent-safer$(EXEEXT) test-dirent$(EXEEXT) \
+	test-dirname$(EXEEXT) test-dup$(EXEEXT) test-dup2$(EXEEXT) \
+	test-environ$(EXEEXT) test-errno$(EXEEXT) test-exclude1.sh \
+	test-exclude2.sh test-exclude3.sh test-exclude4.sh \
+	test-exclude5.sh test-exclude6.sh test-exclude7.sh \
+	test-exclude8.sh test-faccessat$(EXEEXT) test-fadvise$(EXEEXT) \
+	test-fchdir$(EXEEXT) test-fchmodat$(EXEEXT) \
+	test-fchownat$(EXEEXT) test-fclose$(EXEEXT) \
+	test-fcntl-h$(EXEEXT) test-fcntl-safer$(EXEEXT) \
+	test-fcntl$(EXEEXT) test-fdatasync$(EXEEXT) \
+	test-fdopen$(EXEEXT) test-fdopendir$(EXEEXT) \
+	test-fdutimensat$(EXEEXT) test-fflush$(EXEEXT) test-fflush2.sh \
+	test-fgetc$(EXEEXT) test-file-has-acl.sh \
+	test-file-has-acl-1.sh test-file-has-acl-2.sh \
+	test-filenamecat$(EXEEXT) test-filevercmp$(EXEEXT) \
+	test-float$(EXEEXT) test-fnmatch-h$(EXEEXT) \
+	test-fnmatch$(EXEEXT) test-fopen-safer$(EXEEXT) \
+	test-fopen$(EXEEXT) test-fpending.sh test-fpurge$(EXEEXT) \
+	test-fputc$(EXEEXT) test-fread$(EXEEXT) test-freadahead.sh \
+	test-freading$(EXEEXT) test-freadptr.sh test-freadptr2.sh \
+	test-freadseek.sh test-freopen-safer$(EXEEXT) \
+	test-freopen$(EXEEXT) test-frexp-nolibm$(EXEEXT) \
+	test-frexpl-nolibm$(EXEEXT) test-fseek.sh test-fseek2.sh \
+	test-fseeko.sh test-fseeko2.sh test-fseeko3.sh test-fseeko4.sh \
+	test-fseterr$(EXEEXT) test-fstat$(EXEEXT) \
+	test-fstatat$(EXEEXT) test-fsync$(EXEEXT) test-ftell.sh \
+	test-ftell2.sh test-ftell3$(EXEEXT) test-ftello.sh \
+	test-ftello2.sh test-ftello3$(EXEEXT) test-ftello4.sh \
+	test-ftruncate.sh test-futimens$(EXEEXT) test-fwrite$(EXEEXT) \
+	test-getaddrinfo$(EXEEXT) test-getcwd-lgpl$(EXEEXT) \
+	test-getcwd.sh test-getdelim$(EXEEXT) \
+	test-getdtablesize$(EXEEXT) test-getgroups$(EXEEXT) \
+	test-gethostname$(EXEEXT) test-getline$(EXEEXT) \
+	test-getloadavg$(EXEEXT) test-getlogin$(EXEEXT) \
+	test-getndelim2$(EXEEXT) test-getopt-gnu$(EXEEXT) \
+	test-getopt-posix$(EXEEXT) test-getprogname$(EXEEXT) \
+	test-getrusage$(EXEEXT) test-gettimeofday$(EXEEXT) \
+	test-hard-locale$(EXEEXT) test-hash$(EXEEXT) \
+	test-i-ring$(EXEEXT) test-iconv-h$(EXEEXT) test-iconv$(EXEEXT) \
+	test-ignore-value$(EXEEXT) test-inet_ntop$(EXEEXT) \
+	test-inet_pton$(EXEEXT) test-ino-map$(EXEEXT) \
+	test-intprops$(EXEEXT) test-inttostr$(EXEEXT) \
+	test-inttypes$(EXEEXT) test-ioctl$(EXEEXT) \
+	test-isatty$(EXEEXT) test-isblank$(EXEEXT) \
+	test-isnand-nolibm$(EXEEXT) test-isnanf-nolibm$(EXEEXT) \
+	test-isnanl-nolibm$(EXEEXT) test-iswblank$(EXEEXT) \
+	test-iswdigit.sh test-iswxdigit.sh test-langinfo$(EXEEXT) \
+	test-lchmod$(EXEEXT) test-lchown$(EXEEXT) \
+	test-limits-h$(EXEEXT) test-link$(EXEEXT) test-linkat$(EXEEXT) \
+	test-listen$(EXEEXT) test-locale$(EXEEXT) \
+	test-localeconv$(EXEEXT) test-localename$(EXEEXT) \
+	test-rwlock1$(EXEEXT) test-lock$(EXEEXT) test-once1$(EXEEXT) \
+	test-once2$(EXEEXT) test-lseek.sh test-lstat$(EXEEXT) \
+	test-malloc-gnu$(EXEEXT) test-malloca$(EXEEXT) \
+	test-math$(EXEEXT) test-mbrtowc1.sh test-mbrtowc2.sh \
+	test-mbrtowc3.sh test-mbrtowc4.sh test-mbrtowc5.sh \
+	test-mbrtowc-w32-1.sh test-mbrtowc-w32-2.sh \
+	test-mbrtowc-w32-3.sh test-mbrtowc-w32-4.sh \
+	test-mbrtowc-w32-5.sh test-mbrtowc-w32-6.sh \
+	test-mbrtowc-w32-7.sh test-mbsalign$(EXEEXT) \
+	test-mbscasecmp.sh test-mbschr.sh test-mbsinit.sh \
+	test-mbsrtowcs1.sh test-mbsrtowcs2.sh test-mbsrtowcs3.sh \
+	test-mbsrtowcs4.sh test-mbsstr1$(EXEEXT) test-mbsstr2.sh \
+	test-mbsstr3.sh test-memcasecmp$(EXEEXT) test-memchr$(EXEEXT) \
+	test-memchr2$(EXEEXT) test-memcoll$(EXEEXT) \
+	test-memrchr$(EXEEXT) test-mkdir$(EXEEXT) test-mkfifo$(EXEEXT) \
+	test-mknod$(EXEEXT) test-nanosleep$(EXEEXT) \
+	test-netdb$(EXEEXT) test-netinet_in$(EXEEXT) \
+	test-nl_langinfo.sh test-nl_langinfo-mt$(EXEEXT) \
+	test-nstrftime$(EXEEXT) test-open$(EXEEXT) \
+	test-openat-safer$(EXEEXT) test-openat$(EXEEXT) \
+	test-parse-datetime$(EXEEXT) test-pathmax$(EXEEXT) \
+	test-perror.sh test-perror2$(EXEEXT) test-pipe$(EXEEXT) \
+	test-pipe2$(EXEEXT) test-posixtm$(EXEEXT) \
+	test-printf-frexp$(EXEEXT) test-printf-frexpl$(EXEEXT) \
+	test-priv-set$(EXEEXT) test-pthread-cond$(EXEEXT) \
+	test-pthread$(EXEEXT) test-pthread-mutex$(EXEEXT) \
+	test-pthread-thread$(EXEEXT) test-pthread_sigmask1$(EXEEXT) \
+	test-pthread_sigmask2$(EXEEXT) test-quotearg-simple$(EXEEXT) \
+	test-raise$(EXEEXT) test-rand-isaac$(EXEEXT) \
+	test-read-file$(EXEEXT) test-read$(EXEEXT) \
+	test-readlink$(EXEEXT) test-readlinkat$(EXEEXT) \
+	test-readtokens.sh test-realloc-gnu$(EXEEXT) \
+	test-regex$(EXEEXT) test-remove$(EXEEXT) test-rename$(EXEEXT) \
+	test-renameat$(EXEEXT) test-renameatu$(EXEEXT) \
+	test-rmdir$(EXEEXT) test-sched$(EXEEXT) test-select$(EXEEXT) \
+	test-select-in.sh test-select-out.sh test-setenv$(EXEEXT) \
+	test-setlocale_null$(EXEEXT) \
+	test-setlocale_null-mt-one$(EXEEXT) \
+	test-setlocale_null-mt-all$(EXEEXT) test-setlocale1.sh \
+	test-setlocale2.sh test-setsockopt$(EXEEXT) \
+	test-sigaction$(EXEEXT) test-signal-h$(EXEEXT) \
+	test-signbit$(EXEEXT) test-sigprocmask$(EXEEXT) \
+	test-sleep$(EXEEXT) test-snprintf$(EXEEXT) \
+	test-sockets$(EXEEXT) test-stat$(EXEEXT) \
+	test-stat-time$(EXEEXT) test-statat$(EXEEXT) \
+	test-stdalign$(EXEEXT) test-stdbool$(EXEEXT) \
+	test-stddef$(EXEEXT) test-stdint$(EXEEXT) test-stdio$(EXEEXT) \
+	test-stdlib$(EXEEXT) test-strerror$(EXEEXT) \
+	test-strerror_r$(EXEEXT) test-striconv$(EXEEXT) \
+	test-string$(EXEEXT) test-strncat$(EXEEXT) \
+	test-strnlen$(EXEEXT) test-strsignal$(EXEEXT) \
+	test-strtod$(EXEEXT) test-strtod1.sh test-strtoimax$(EXEEXT) \
+	test-strtold$(EXEEXT) test-strtold1.sh test-strtoll$(EXEEXT) \
+	test-strtoull$(EXEEXT) test-strtoumax$(EXEEXT) \
+	test-symlink$(EXEEXT) test-symlinkat$(EXEEXT) \
+	test-sys_ioctl$(EXEEXT) test-sys_resource$(EXEEXT) \
+	test-sys_select$(EXEEXT) test-sys_socket$(EXEEXT) \
+	test-sys_stat$(EXEEXT) test-sys_time$(EXEEXT) \
+	test-sys_types$(EXEEXT) test-sys_uio$(EXEEXT) \
+	test-sys_utsname$(EXEEXT) test-sys_wait$(EXEEXT) \
+	test-termios$(EXEEXT) test-init.sh test-thread_self$(EXEEXT) \
+	test-thread_create$(EXEEXT) test-time$(EXEEXT) \
+	test-timespec$(EXEEXT) test-tls$(EXEEXT) test-u64$(EXEEXT) \
+	test-uname$(EXEEXT) test-dup-safer$(EXEEXT) \
+	test-unistd$(EXEEXT) test-u8-mbtoucr$(EXEEXT) \
+	test-u8-uctomb$(EXEEXT) test-uc_width$(EXEEXT) \
+	uniwidth/test-uc_width2.sh test-unlink$(EXEEXT) \
+	test-unlinkat$(EXEEXT) test-unsetenv$(EXEEXT) \
+	test-update-copyright.sh test-userspec$(EXEEXT) \
+	test-usleep$(EXEEXT) test-utime-h$(EXEEXT) test-utime$(EXEEXT) \
+	test-utimens$(EXEEXT) test-utimensat$(EXEEXT) \
+	test-vasnprintf$(EXEEXT) test-vasprintf-posix$(EXEEXT) \
+	test-vasprintf$(EXEEXT) test-vc-list-files-git.sh \
+	test-vc-list-files-cvs.sh test-verify$(EXEEXT) test-verify.sh \
+	test-version-etc.sh test-vfprintf-posix.sh \
+	test-vprintf-posix.sh test-wchar$(EXEEXT) test-wcrtomb.sh \
+	test-wcrtomb-w32-1.sh test-wcrtomb-w32-2.sh \
+	test-wcrtomb-w32-3.sh test-wcrtomb-w32-4.sh \
+	test-wcrtomb-w32-5.sh test-wcrtomb-w32-6.sh \
+	test-wcrtomb-w32-7.sh test-wctype-h$(EXEEXT) \
+	test-wcwidth$(EXEEXT) test-write$(EXEEXT) test-xalloc-die.sh \
+	test-xprintf-posix.sh test-xstrtoimax.sh test-xstrtol.sh \
+	test-xstrtoumax.sh test-xvasprintf$(EXEEXT) test-yesno.sh
+XFAIL_TESTS =
+noinst_PROGRAMS = bench-md5$(EXEEXT) bench-sha1$(EXEEXT) \
+	bench-sha224$(EXEEXT) bench-sha256$(EXEEXT) \
+	bench-sha384$(EXEEXT) bench-sha512$(EXEEXT) \
+	current-locale$(EXEEXT) test-localcharset$(EXEEXT)
+check_PROGRAMS = test-accept$(EXEEXT) test-set-mode-acl$(EXEEXT) \
+	test-copy-acl$(EXEEXT) test-sameacls$(EXEEXT) \
+	test-alignof$(EXEEXT) test-alloca-opt$(EXEEXT) \
+	test-areadlink$(EXEEXT) test-areadlink-with-size$(EXEEXT) \
+	test-areadlinkat$(EXEEXT) test-argmatch$(EXEEXT) \
+	test-argv-iter$(EXEEXT) test-arpa_inet$(EXEEXT) \
+	test-base32$(EXEEXT) test-base64$(EXEEXT) \
+	test-binary-io$(EXEEXT) test-bind$(EXEEXT) \
+	test-bitrotate$(EXEEXT) test-btowc$(EXEEXT) \
+	test-byteswap$(EXEEXT) test-c-ctype$(EXEEXT) \
+	test-c-strcasecmp$(EXEEXT) test-c-strncasecmp$(EXEEXT) \
+	test-calloc-gnu$(EXEEXT) test-canonicalize$(EXEEXT) \
+	test-chdir$(EXEEXT) test-chown$(EXEEXT) test-cloexec$(EXEEXT) \
+	test-close$(EXEEXT) test-closein$(EXEEXT) \
+	test-connect$(EXEEXT) test-count-leading-zeros$(EXEEXT) \
+	test-md5$(EXEEXT) test-sha1$(EXEEXT) test-sha256$(EXEEXT) \
+	test-sha512$(EXEEXT) test-ctype$(EXEEXT) test-di-set$(EXEEXT) \
+	test-dirent-safer$(EXEEXT) test-dirent$(EXEEXT) \
+	test-dirname$(EXEEXT) test-dup$(EXEEXT) test-dup2$(EXEEXT) \
+	test-environ$(EXEEXT) test-errno$(EXEEXT) \
+	test-exclude$(EXEEXT) test-faccessat$(EXEEXT) \
+	test-fadvise$(EXEEXT) test-fchdir$(EXEEXT) \
+	test-fchmodat$(EXEEXT) test-fchownat$(EXEEXT) \
+	test-fclose$(EXEEXT) test-fcntl-h$(EXEEXT) \
+	test-fcntl-safer$(EXEEXT) test-fcntl$(EXEEXT) \
+	test-fdatasync$(EXEEXT) test-fdopen$(EXEEXT) \
+	test-fdopendir$(EXEEXT) test-fdutimensat$(EXEEXT) \
+	test-fflush$(EXEEXT) test-fflush2$(EXEEXT) test-fgetc$(EXEEXT) \
+	test-file-has-acl$(EXEEXT) test-filenamecat$(EXEEXT) \
+	test-filevercmp$(EXEEXT) test-float$(EXEEXT) \
+	test-fnmatch-h$(EXEEXT) test-fnmatch$(EXEEXT) \
+	test-fopen-safer$(EXEEXT) test-fopen$(EXEEXT) \
+	test-fpending$(EXEEXT) test-fpurge$(EXEEXT) \
+	test-fputc$(EXEEXT) test-fread$(EXEEXT) \
+	test-freadahead$(EXEEXT) test-freading$(EXEEXT) \
+	test-freadptr$(EXEEXT) test-freadptr2$(EXEEXT) \
+	test-freadseek$(EXEEXT) test-freopen-safer$(EXEEXT) \
+	test-freopen$(EXEEXT) test-frexp-nolibm$(EXEEXT) \
+	test-frexpl-nolibm$(EXEEXT) test-fseek$(EXEEXT) \
+	test-fseeko$(EXEEXT) test-fseeko3$(EXEEXT) \
+	test-fseeko4$(EXEEXT) test-fseterr$(EXEEXT) \
+	test-fstat$(EXEEXT) test-fstatat$(EXEEXT) test-fsync$(EXEEXT) \
+	test-ftell$(EXEEXT) test-ftell3$(EXEEXT) test-ftello$(EXEEXT) \
+	test-ftello3$(EXEEXT) test-ftello4$(EXEEXT) \
+	test-ftruncate$(EXEEXT) test-futimens$(EXEEXT) \
+	test-fwrite$(EXEEXT) test-getaddrinfo$(EXEEXT) \
+	test-getcwd-lgpl$(EXEEXT) test-getcwd$(EXEEXT) \
+	test-getdelim$(EXEEXT) test-getdtablesize$(EXEEXT) \
+	test-getgroups$(EXEEXT) test-gethostname$(EXEEXT) \
+	test-getline$(EXEEXT) test-getloadavg$(EXEEXT) \
+	test-getlogin$(EXEEXT) test-getndelim2$(EXEEXT) \
+	test-getopt-gnu$(EXEEXT) test-getopt-posix$(EXEEXT) \
+	test-getprogname$(EXEEXT) test-getrusage$(EXEEXT) \
+	test-gettimeofday$(EXEEXT) test-hard-locale$(EXEEXT) \
+	test-hash$(EXEEXT) test-i-ring$(EXEEXT) test-iconv-h$(EXEEXT) \
+	test-iconv$(EXEEXT) test-ignore-value$(EXEEXT) \
+	test-inet_ntop$(EXEEXT) test-inet_pton$(EXEEXT) \
+	test-ino-map$(EXEEXT) test-intprops$(EXEEXT) \
+	test-inttostr$(EXEEXT) test-inttypes$(EXEEXT) \
+	test-ioctl$(EXEEXT) test-isatty$(EXEEXT) test-isblank$(EXEEXT) \
+	test-isnand-nolibm$(EXEEXT) test-isnanf-nolibm$(EXEEXT) \
+	test-isnanl-nolibm$(EXEEXT) test-iswblank$(EXEEXT) \
+	test-iswdigit$(EXEEXT) test-iswxdigit$(EXEEXT) \
+	test-langinfo$(EXEEXT) test-lchmod$(EXEEXT) \
+	test-lchown$(EXEEXT) test-limits-h$(EXEEXT) test-link$(EXEEXT) \
+	test-linkat$(EXEEXT) test-listen$(EXEEXT) test-locale$(EXEEXT) \
+	test-localeconv$(EXEEXT) test-localename$(EXEEXT) \
+	test-rwlock1$(EXEEXT) test-lock$(EXEEXT) test-once1$(EXEEXT) \
+	test-once2$(EXEEXT) test-lseek$(EXEEXT) test-lstat$(EXEEXT) \
+	test-malloc-gnu$(EXEEXT) test-malloca$(EXEEXT) \
+	test-math$(EXEEXT) test-mbrtowc$(EXEEXT) \
+	test-mbrtowc-w32$(EXEEXT) test-mbsalign$(EXEEXT) \
+	test-mbscasecmp$(EXEEXT) test-mbschr$(EXEEXT) \
+	test-mbsinit$(EXEEXT) test-mbsrtowcs$(EXEEXT) \
+	test-mbsstr1$(EXEEXT) test-mbsstr2$(EXEEXT) \
+	test-mbsstr3$(EXEEXT) test-memcasecmp$(EXEEXT) \
+	test-memchr$(EXEEXT) test-memchr2$(EXEEXT) \
+	test-memcoll$(EXEEXT) test-memrchr$(EXEEXT) \
+	test-mkdir$(EXEEXT) test-mkfifo$(EXEEXT) test-mknod$(EXEEXT) \
+	test-nanosleep$(EXEEXT) test-netdb$(EXEEXT) \
+	test-netinet_in$(EXEEXT) test-nl_langinfo$(EXEEXT) \
+	test-nl_langinfo-mt$(EXEEXT) test-nstrftime$(EXEEXT) \
+	test-open$(EXEEXT) test-openat-safer$(EXEEXT) \
+	test-openat$(EXEEXT) test-parse-datetime$(EXEEXT) \
+	test-pathmax$(EXEEXT) test-perror$(EXEEXT) \
+	test-perror2$(EXEEXT) test-pipe$(EXEEXT) test-pipe2$(EXEEXT) \
+	test-posixtm$(EXEEXT) test-printf-frexp$(EXEEXT) \
+	test-printf-frexpl$(EXEEXT) test-priv-set$(EXEEXT) \
+	test-pthread-cond$(EXEEXT) test-pthread$(EXEEXT) \
+	test-pthread-mutex$(EXEEXT) test-pthread-thread$(EXEEXT) \
+	test-pthread_sigmask1$(EXEEXT) test-pthread_sigmask2$(EXEEXT) \
+	test-quotearg-simple$(EXEEXT) test-raise$(EXEEXT) \
+	test-rand-isaac$(EXEEXT) test-read-file$(EXEEXT) \
+	test-read$(EXEEXT) test-readlink$(EXEEXT) \
+	test-readlinkat$(EXEEXT) test-readtokens$(EXEEXT) \
+	test-realloc-gnu$(EXEEXT) test-regex$(EXEEXT) \
+	test-remove$(EXEEXT) test-rename$(EXEEXT) \
+	test-renameat$(EXEEXT) test-renameatu$(EXEEXT) \
+	test-rmdir$(EXEEXT) test-sched$(EXEEXT) test-select$(EXEEXT) \
+	test-select-fd$(EXEEXT) test-select-stdin$(EXEEXT) \
+	test-setenv$(EXEEXT) test-setlocale_null$(EXEEXT) \
+	test-setlocale_null-mt-one$(EXEEXT) \
+	test-setlocale_null-mt-all$(EXEEXT) test-setlocale1$(EXEEXT) \
+	test-setlocale2$(EXEEXT) test-setsockopt$(EXEEXT) \
+	test-sigaction$(EXEEXT) test-signal-h$(EXEEXT) \
+	test-signbit$(EXEEXT) test-sigprocmask$(EXEEXT) \
+	test-sleep$(EXEEXT) test-snprintf$(EXEEXT) \
+	test-sockets$(EXEEXT) test-stat$(EXEEXT) \
+	test-stat-time$(EXEEXT) test-statat$(EXEEXT) \
+	test-stdalign$(EXEEXT) test-stdbool$(EXEEXT) \
+	test-stddef$(EXEEXT) test-stdint$(EXEEXT) test-stdio$(EXEEXT) \
+	test-stdlib$(EXEEXT) test-strerror$(EXEEXT) \
+	test-strerror_r$(EXEEXT) test-striconv$(EXEEXT) \
+	test-string$(EXEEXT) test-strncat$(EXEEXT) \
+	test-strnlen$(EXEEXT) test-strsignal$(EXEEXT) \
+	test-strtod$(EXEEXT) test-strtod1$(EXEEXT) \
+	test-strtoimax$(EXEEXT) test-strtold$(EXEEXT) \
+	test-strtold1$(EXEEXT) test-strtoll$(EXEEXT) \
+	test-strtoull$(EXEEXT) test-strtoumax$(EXEEXT) \
+	test-symlink$(EXEEXT) test-symlinkat$(EXEEXT) \
+	test-sys_ioctl$(EXEEXT) test-sys_resource$(EXEEXT) \
+	test-sys_select$(EXEEXT) test-sys_socket$(EXEEXT) \
+	test-sys_stat$(EXEEXT) test-sys_time$(EXEEXT) \
+	test-sys_types$(EXEEXT) test-sys_uio$(EXEEXT) \
+	test-sys_utsname$(EXEEXT) test-sys_wait$(EXEEXT) \
+	test-termios$(EXEEXT) test-thread_self$(EXEEXT) \
+	test-thread_create$(EXEEXT) test-time$(EXEEXT) \
+	test-timespec$(EXEEXT) test-tls$(EXEEXT) test-u64$(EXEEXT) \
+	test-uname$(EXEEXT) test-dup-safer$(EXEEXT) \
+	test-unistd$(EXEEXT) test-u8-mbtoucr$(EXEEXT) \
+	test-u8-uctomb$(EXEEXT) test-uc_width$(EXEEXT) \
+	test-uc_width2$(EXEEXT) test-unlink$(EXEEXT) \
+	test-unlinkat$(EXEEXT) test-unsetenv$(EXEEXT) \
+	test-userspec$(EXEEXT) test-usleep$(EXEEXT) \
+	test-utime-h$(EXEEXT) test-utime$(EXEEXT) \
+	test-utimens$(EXEEXT) test-utimensat$(EXEEXT) \
+	test-vasnprintf$(EXEEXT) test-vasprintf-posix$(EXEEXT) \
+	test-vasprintf$(EXEEXT) test-verify$(EXEEXT) \
+	test-version-etc$(EXEEXT) test-vfprintf-posix$(EXEEXT) \
+	test-vprintf-posix$(EXEEXT) test-wchar$(EXEEXT) \
+	test-wcrtomb$(EXEEXT) test-wcrtomb-w32$(EXEEXT) \
+	test-wctype-h$(EXEEXT) test-wcwidth$(EXEEXT) \
+	test-write$(EXEEXT) test-xalloc-die$(EXEEXT) \
+	test-xfprintf-posix$(EXEEXT) test-xprintf-posix$(EXEEXT) \
+	test-xstrtoimax$(EXEEXT) test-xstrtol$(EXEEXT) \
+	test-xstrtoul$(EXEEXT) test-xstrtoumax$(EXEEXT) \
+	test-xvasprintf$(EXEEXT) test-yesno$(EXEEXT)
+EXTRA_PROGRAMS = test-verify-try$(EXEEXT)
+subdir = gnulib-tests
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+	./$(DEPDIR)/inet_pton.Po ./$(DEPDIR)/ioctl.Po \
+	./$(DEPDIR)/listen.Po ./$(DEPDIR)/locale.Po \
+	./$(DEPDIR)/localename-table.Po ./$(DEPDIR)/localename.Po \
+	./$(DEPDIR)/perror.Po ./$(DEPDIR)/randomd.Po \
+	./$(DEPDIR)/randoml.Po ./$(DEPDIR)/sched_yield.Po \
+	./$(DEPDIR)/secure_getenv.Po ./$(DEPDIR)/setlocale.Po \
+	./$(DEPDIR)/setsockopt.Po ./$(DEPDIR)/sleep.Po \
+	./$(DEPDIR)/socket.Po ./$(DEPDIR)/strerror_r.Po \
+	./$(DEPDIR)/test-accept.Po ./$(DEPDIR)/test-alignof.Po \
+	./$(DEPDIR)/test-alloca-opt.Po \
+	./$(DEPDIR)/test-areadlink-with-size.Po \
+	./$(DEPDIR)/test-areadlink.Po ./$(DEPDIR)/test-areadlinkat.Po \
+	./$(DEPDIR)/test-argmatch.Po ./$(DEPDIR)/test-argv-iter.Po \
+	./$(DEPDIR)/test-arpa_inet.Po ./$(DEPDIR)/test-base32.Po \
+	./$(DEPDIR)/test-base64.Po ./$(DEPDIR)/test-binary-io.Po \
+	./$(DEPDIR)/test-bind.Po ./$(DEPDIR)/test-bitrotate.Po \
+	./$(DEPDIR)/test-btowc.Po ./$(DEPDIR)/test-byteswap.Po \
+	./$(DEPDIR)/test-c-ctype.Po ./$(DEPDIR)/test-c-strcasecmp.Po \
+	./$(DEPDIR)/test-c-strncasecmp.Po \
+	./$(DEPDIR)/test-calloc-gnu.Po \
+	./$(DEPDIR)/test-canonicalize.Po ./$(DEPDIR)/test-chdir.Po \
+	./$(DEPDIR)/test-chown.Po ./$(DEPDIR)/test-cloexec.Po \
+	./$(DEPDIR)/test-close.Po ./$(DEPDIR)/test-closein.Po \
+	./$(DEPDIR)/test-connect.Po ./$(DEPDIR)/test-copy-acl.Po \
+	./$(DEPDIR)/test-count-leading-zeros.Po \
+	./$(DEPDIR)/test-ctype.Po ./$(DEPDIR)/test-di-set.Po \
+	./$(DEPDIR)/test-dirent-safer.Po ./$(DEPDIR)/test-dirent.Po \
+	./$(DEPDIR)/test-dirname.Po ./$(DEPDIR)/test-dup-safer.Po \
+	./$(DEPDIR)/test-dup.Po ./$(DEPDIR)/test-dup2.Po \
+	./$(DEPDIR)/test-environ.Po ./$(DEPDIR)/test-errno.Po \
+	./$(DEPDIR)/test-exclude.Po ./$(DEPDIR)/test-faccessat.Po \
+	./$(DEPDIR)/test-fadvise.Po ./$(DEPDIR)/test-fchdir.Po \
+	./$(DEPDIR)/test-fchmodat.Po ./$(DEPDIR)/test-fchownat.Po \
+	./$(DEPDIR)/test-fclose.Po ./$(DEPDIR)/test-fcntl-h.Po \
+	./$(DEPDIR)/test-fcntl-safer.Po ./$(DEPDIR)/test-fcntl.Po \
+	./$(DEPDIR)/test-fdatasync.Po ./$(DEPDIR)/test-fdopen.Po \
+	./$(DEPDIR)/test-fdopendir.Po ./$(DEPDIR)/test-fdutimensat.Po \
+	./$(DEPDIR)/test-fflush.Po ./$(DEPDIR)/test-fflush2.Po \
+	./$(DEPDIR)/test-fgetc.Po ./$(DEPDIR)/test-file-has-acl.Po \
+	./$(DEPDIR)/test-filenamecat.Po ./$(DEPDIR)/test-filevercmp.Po \
+	./$(DEPDIR)/test-float.Po ./$(DEPDIR)/test-fnmatch-h.Po \
+	./$(DEPDIR)/test-fnmatch.Po ./$(DEPDIR)/test-fopen-safer.Po \
+	./$(DEPDIR)/test-fopen.Po ./$(DEPDIR)/test-fpending.Po \
+	./$(DEPDIR)/test-fpurge.Po ./$(DEPDIR)/test-fputc.Po \
+	./$(DEPDIR)/test-fread.Po ./$(DEPDIR)/test-freadahead.Po \
+	./$(DEPDIR)/test-freading.Po ./$(DEPDIR)/test-freadptr.Po \
+	./$(DEPDIR)/test-freadptr2.Po ./$(DEPDIR)/test-freadseek.Po \
+	./$(DEPDIR)/test-freopen-safer.Po ./$(DEPDIR)/test-freopen.Po \
+	./$(DEPDIR)/test-frexp.Po ./$(DEPDIR)/test-frexpl.Po \
+	./$(DEPDIR)/test-fseek.Po ./$(DEPDIR)/test-fseeko.Po \
+	./$(DEPDIR)/test-fseeko3.Po ./$(DEPDIR)/test-fseeko4.Po \
+	./$(DEPDIR)/test-fseterr.Po ./$(DEPDIR)/test-fstat.Po \
+	./$(DEPDIR)/test-fstatat.Po ./$(DEPDIR)/test-fsync.Po \
+	./$(DEPDIR)/test-ftell.Po ./$(DEPDIR)/test-ftell3.Po \
+	./$(DEPDIR)/test-ftello.Po ./$(DEPDIR)/test-ftello3.Po \
+	./$(DEPDIR)/test-ftello4.Po ./$(DEPDIR)/test-ftruncate.Po \
+	./$(DEPDIR)/test-futimens.Po ./$(DEPDIR)/test-fwrite.Po \
+	./$(DEPDIR)/test-getaddrinfo.Po \
+	./$(DEPDIR)/test-getcwd-lgpl.Po ./$(DEPDIR)/test-getcwd.Po \
+	./$(DEPDIR)/test-getdelim.Po ./$(DEPDIR)/test-getdtablesize.Po \
+	./$(DEPDIR)/test-getgroups.Po ./$(DEPDIR)/test-gethostname.Po \
+	./$(DEPDIR)/test-getline.Po ./$(DEPDIR)/test-getloadavg.Po \
+	./$(DEPDIR)/test-getlogin.Po ./$(DEPDIR)/test-getndelim2.Po \
+	./$(DEPDIR)/test-getopt-gnu.Po \
+	./$(DEPDIR)/test-getopt-posix.Po \
+	./$(DEPDIR)/test-getprogname.Po ./$(DEPDIR)/test-getrusage.Po \
+	./$(DEPDIR)/test-gettimeofday.Po \
+	./$(DEPDIR)/test-hard-locale.Po ./$(DEPDIR)/test-hash.Po \
+	./$(DEPDIR)/test-i-ring.Po ./$(DEPDIR)/test-iconv-h.Po \
+	./$(DEPDIR)/test-iconv.Po ./$(DEPDIR)/test-ignore-value.Po \
+	./$(DEPDIR)/test-inet_ntop.Po ./$(DEPDIR)/test-inet_pton.Po \
+	./$(DEPDIR)/test-ino-map.Po ./$(DEPDIR)/test-intprops.Po \
+	./$(DEPDIR)/test-inttostr.Po ./$(DEPDIR)/test-inttypes.Po \
+	./$(DEPDIR)/test-ioctl.Po ./$(DEPDIR)/test-isatty.Po \
+	./$(DEPDIR)/test-isblank.Po ./$(DEPDIR)/test-isnand-nolibm.Po \
+	./$(DEPDIR)/test-isnanf-nolibm.Po \
+	./$(DEPDIR)/test-isnanl-nolibm.Po ./$(DEPDIR)/test-iswblank.Po \
+	./$(DEPDIR)/test-iswdigit.Po ./$(DEPDIR)/test-iswxdigit.Po \
+	./$(DEPDIR)/test-langinfo.Po ./$(DEPDIR)/test-lchmod.Po \
+	./$(DEPDIR)/test-lchown.Po ./$(DEPDIR)/test-limits-h.Po \
+	./$(DEPDIR)/test-link.Po ./$(DEPDIR)/test-linkat.Po \
+	./$(DEPDIR)/test-listen.Po ./$(DEPDIR)/test-localcharset.Po \
+	./$(DEPDIR)/test-locale.Po ./$(DEPDIR)/test-localeconv.Po \
+	./$(DEPDIR)/test-localename.Po ./$(DEPDIR)/test-lseek.Po \
+	./$(DEPDIR)/test-lstat.Po ./$(DEPDIR)/test-malloc-gnu.Po \
+	./$(DEPDIR)/test-malloca.Po ./$(DEPDIR)/test-math.Po \
+	./$(DEPDIR)/test-mbrtowc-w32.Po ./$(DEPDIR)/test-mbrtowc.Po \
+	./$(DEPDIR)/test-mbsalign.Po ./$(DEPDIR)/test-mbscasecmp.Po \
+	./$(DEPDIR)/test-mbschr.Po ./$(DEPDIR)/test-mbsinit.Po \
+	./$(DEPDIR)/test-mbsrtowcs.Po ./$(DEPDIR)/test-mbsstr1.Po \
+	./$(DEPDIR)/test-mbsstr2.Po ./$(DEPDIR)/test-mbsstr3.Po \
+	./$(DEPDIR)/test-md5.Po ./$(DEPDIR)/test-memcasecmp.Po \
+	./$(DEPDIR)/test-memchr.Po ./$(DEPDIR)/test-memchr2.Po \
+	./$(DEPDIR)/test-memcoll.Po ./$(DEPDIR)/test-memrchr.Po \
+	./$(DEPDIR)/test-mkdir.Po ./$(DEPDIR)/test-mkfifo.Po \
+	./$(DEPDIR)/test-mknod.Po ./$(DEPDIR)/test-nanosleep.Po \
+	./$(DEPDIR)/test-netdb.Po ./$(DEPDIR)/test-netinet_in.Po \
+	./$(DEPDIR)/test-nl_langinfo-mt.Po \
+	./$(DEPDIR)/test-nl_langinfo.Po ./$(DEPDIR)/test-nstrftime.Po \
+	./$(DEPDIR)/test-once.Po ./$(DEPDIR)/test-open.Po \
+	./$(DEPDIR)/test-openat-safer.Po ./$(DEPDIR)/test-openat.Po \
+	./$(DEPDIR)/test-parse-datetime.Po ./$(DEPDIR)/test-pathmax.Po \
+	./$(DEPDIR)/test-perror.Po ./$(DEPDIR)/test-perror2.Po \
+	./$(DEPDIR)/test-pipe.Po ./$(DEPDIR)/test-pipe2.Po \
+	./$(DEPDIR)/test-posixtm.Po ./$(DEPDIR)/test-printf-frexp.Po \
+	./$(DEPDIR)/test-printf-frexpl.Po ./$(DEPDIR)/test-priv-set.Po \
+	./$(DEPDIR)/test-pthread-cond.Po \
+	./$(DEPDIR)/test-pthread-mutex.Po \
+	./$(DEPDIR)/test-pthread-thread.Po ./$(DEPDIR)/test-pthread.Po \
+	./$(DEPDIR)/test-pthread_sigmask1.Po \
+	./$(DEPDIR)/test-pthread_sigmask2.Po \
+	./$(DEPDIR)/test-quotearg-simple.Po ./$(DEPDIR)/test-raise.Po \
+	./$(DEPDIR)/test-rand-isaac.Po ./$(DEPDIR)/test-read-file.Po \
+	./$(DEPDIR)/test-read.Po ./$(DEPDIR)/test-readlink.Po \
+	./$(DEPDIR)/test-readlinkat.Po ./$(DEPDIR)/test-readtokens.Po \
+	./$(DEPDIR)/test-realloc-gnu.Po ./$(DEPDIR)/test-regex.Po \
+	./$(DEPDIR)/test-remove.Po ./$(DEPDIR)/test-rename.Po \
+	./$(DEPDIR)/test-renameat.Po ./$(DEPDIR)/test-renameatu.Po \
+	./$(DEPDIR)/test-rmdir.Po ./$(DEPDIR)/test-rwlock1.Po \
+	./$(DEPDIR)/test-sameacls.Po ./$(DEPDIR)/test-sched.Po \
+	./$(DEPDIR)/test-select-fd.Po ./$(DEPDIR)/test-select-stdin.Po \
+	./$(DEPDIR)/test-select.Po ./$(DEPDIR)/test-set-mode-acl.Po \
+	./$(DEPDIR)/test-setenv.Po ./$(DEPDIR)/test-setlocale1.Po \
+	./$(DEPDIR)/test-setlocale2.Po \
+	./$(DEPDIR)/test-setlocale_null-mt-all.Po \
+	./$(DEPDIR)/test-setlocale_null-mt-one.Po \
+	./$(DEPDIR)/test-setlocale_null.Po \
+	./$(DEPDIR)/test-setsockopt.Po ./$(DEPDIR)/test-sha1.Po \
+	./$(DEPDIR)/test-sha256.Po ./$(DEPDIR)/test-sha512.Po \
+	./$(DEPDIR)/test-sigaction.Po ./$(DEPDIR)/test-signal-h.Po \
+	./$(DEPDIR)/test-signbit.Po ./$(DEPDIR)/test-sigprocmask.Po \
+	./$(DEPDIR)/test-sleep.Po ./$(DEPDIR)/test-snprintf.Po \
+	./$(DEPDIR)/test-sockets.Po ./$(DEPDIR)/test-stat-time.Po \
+	./$(DEPDIR)/test-stat.Po ./$(DEPDIR)/test-statat.Po \
+	./$(DEPDIR)/test-stdalign.Po ./$(DEPDIR)/test-stdbool.Po \
+	./$(DEPDIR)/test-stddef.Po ./$(DEPDIR)/test-stdint.Po \
+	./$(DEPDIR)/test-stdio.Po ./$(DEPDIR)/test-stdlib.Po \
+	./$(DEPDIR)/test-strerror.Po ./$(DEPDIR)/test-strerror_r.Po \
+	./$(DEPDIR)/test-striconv.Po ./$(DEPDIR)/test-string.Po \
+	./$(DEPDIR)/test-strncat.Po ./$(DEPDIR)/test-strnlen.Po \
+	./$(DEPDIR)/test-strsignal.Po ./$(DEPDIR)/test-strtod.Po \
+	./$(DEPDIR)/test-strtod1.Po ./$(DEPDIR)/test-strtoimax.Po \
+	./$(DEPDIR)/test-strtold.Po ./$(DEPDIR)/test-strtold1.Po \
+	./$(DEPDIR)/test-strtoll.Po ./$(DEPDIR)/test-strtoull.Po \
+	./$(DEPDIR)/test-strtoumax.Po ./$(DEPDIR)/test-symlink.Po \
+	./$(DEPDIR)/test-symlinkat.Po ./$(DEPDIR)/test-sys_ioctl.Po \
+	./$(DEPDIR)/test-sys_resource.Po \
+	./$(DEPDIR)/test-sys_select.Po ./$(DEPDIR)/test-sys_socket.Po \
+	./$(DEPDIR)/test-sys_stat.Po ./$(DEPDIR)/test-sys_time.Po \
+	./$(DEPDIR)/test-sys_types.Po ./$(DEPDIR)/test-sys_uio.Po \
+	./$(DEPDIR)/test-sys_utsname.Po ./$(DEPDIR)/test-sys_wait.Po \
+	./$(DEPDIR)/test-termios.Po ./$(DEPDIR)/test-thread_create.Po \
+	./$(DEPDIR)/test-thread_self.Po ./$(DEPDIR)/test-time.Po \
+	./$(DEPDIR)/test-timespec.Po ./$(DEPDIR)/test-u64.Po \
+	./$(DEPDIR)/test-uname.Po ./$(DEPDIR)/test-unistd.Po \
+	./$(DEPDIR)/test-unlink.Po ./$(DEPDIR)/test-unlinkat.Po \
+	./$(DEPDIR)/test-unsetenv.Po ./$(DEPDIR)/test-userspec.Po \
+	./$(DEPDIR)/test-usleep.Po ./$(DEPDIR)/test-utime-h.Po \
+	./$(DEPDIR)/test-utime.Po ./$(DEPDIR)/test-utimens.Po \
+	./$(DEPDIR)/test-utimensat.Po ./$(DEPDIR)/test-vasnprintf.Po \
+	./$(DEPDIR)/test-vasprintf-posix.Po \
+	./$(DEPDIR)/test-vasprintf.Po ./$(DEPDIR)/test-verify-try.Po \
+	./$(DEPDIR)/test-verify.Po ./$(DEPDIR)/test-version-etc.Po \
+	./$(DEPDIR)/test-vfprintf-posix.Po \
+	./$(DEPDIR)/test-vprintf-posix.Po ./$(DEPDIR)/test-wchar.Po \
+	./$(DEPDIR)/test-wcrtomb-w32.Po ./$(DEPDIR)/test-wcrtomb.Po \
+	./$(DEPDIR)/test-wctype-h.Po ./$(DEPDIR)/test-wcwidth.Po \
+	./$(DEPDIR)/test-write.Po ./$(DEPDIR)/test-xalloc-die.Po \
+	./$(DEPDIR)/test-xfprintf-posix.Po \
+	./$(DEPDIR)/test-xprintf-posix.Po \
+	./$(DEPDIR)/test-xstrtoimax.Po ./$(DEPDIR)/test-xstrtol.Po \
+	./$(DEPDIR)/test-xstrtoul.Po ./$(DEPDIR)/test-xstrtoumax.Po \
+	./$(DEPDIR)/test-yesno.Po ./$(DEPDIR)/test_lock-test-lock.Po \
+	./$(DEPDIR)/test_tls-test-tls.Po \
+	./$(DEPDIR)/test_xvasprintf-test-xvasprintf.Po \
+	./$(DEPDIR)/timespec-add.Po ./$(DEPDIR)/timespec-sub.Po \
+	./$(DEPDIR)/tmpdir.Po ./$(DEPDIR)/tmpfile.Po \
+	./$(DEPDIR)/usleep.Po ./$(DEPDIR)/wctob.Po \
+	./$(DEPDIR)/wctomb.Po glthread/$(DEPDIR)/thread.Po \
+	unistr/$(DEPDIR)/test-u8-mbtoucr.Po \
+	unistr/$(DEPDIR)/test-u8-uctomb.Po \
+	uniwidth/$(DEPDIR)/test-uc_width.Po \
+	uniwidth/$(DEPDIR)/test-uc_width2.Po
+am__mv = mv -f
+AM_V_lt = $(am__v_lt_@AM_V@)
+am__v_lt_ = $(am__v_lt_@AM_DEFAULT_V@)
+am__v_lt_0 = --silent
+am__v_lt_1 = 
+COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
+	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+AM_V_CC = $(am__v_CC_@AM_V@)
+am__v_CC_ = $(am__v_CC_@AM_DEFAULT_V@)
+am__v_CC_0 = @echo "  CC      " $@;
+am__v_CC_1 = 
+CCLD = $(CC)
+LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+AM_V_CCLD = $(am__v_CCLD_@AM_V@)
+am__v_CCLD_ = $(am__v_CCLD_@AM_DEFAULT_V@)
+am__v_CCLD_0 = @echo "  CCLD    " $@;
+am__v_CCLD_1 = 
+SOURCES = $(libtests_a_SOURCES) $(EXTRA_libtests_a_SOURCES) \
+	bench-md5.c bench-sha1.c bench-sha224.c bench-sha256.c \
+	bench-sha384.c bench-sha512.c $(current_locale_SOURCES) \
+	test-accept.c test-alignof.c test-alloca-opt.c \
+	test-areadlink.c test-areadlink-with-size.c test-areadlinkat.c \
+	test-argmatch.c test-argv-iter.c test-arpa_inet.c \
+	test-base32.c test-base64.c test-binary-io.c test-bind.c \
+	test-bitrotate.c test-btowc.c test-byteswap.c test-c-ctype.c \
+	test-c-strcasecmp.c test-c-strncasecmp.c test-calloc-gnu.c \
+	test-canonicalize.c test-chdir.c test-chown.c test-cloexec.c \
+	test-close.c test-closein.c test-connect.c test-copy-acl.c \
+	test-count-leading-zeros.c test-ctype.c test-di-set.c \
+	test-dirent.c test-dirent-safer.c test-dirname.c test-dup.c \
+	test-dup-safer.c test-dup2.c test-environ.c test-errno.c \
+	test-exclude.c test-faccessat.c test-fadvise.c test-fchdir.c \
+	test-fchmodat.c test-fchownat.c test-fclose.c test-fcntl.c \
+	test-fcntl-h.c test-fcntl-safer.c test-fdatasync.c \
+	test-fdopen.c test-fdopendir.c test-fdutimensat.c \
+	test-fflush.c test-fflush2.c test-fgetc.c test-file-has-acl.c \
+	test-filenamecat.c test-filevercmp.c test-float.c \
+	test-fnmatch.c test-fnmatch-h.c test-fopen.c \
+	test-fopen-safer.c test-fpending.c test-fpurge.c test-fputc.c \
+	test-fread.c test-freadahead.c test-freading.c test-freadptr.c \
+	test-freadptr2.c test-freadseek.c test-freopen.c \
+	test-freopen-safer.c $(test_frexp_nolibm_SOURCES) \
+	$(test_frexpl_nolibm_SOURCES) test-fseek.c test-fseeko.c \
+	test-fseeko3.c test-fseeko4.c test-fseterr.c test-fstat.c \
+	test-fstatat.c test-fsync.c test-ftell.c test-ftell3.c \
+	test-ftello.c test-ftello3.c test-ftello4.c test-ftruncate.c \
+	test-futimens.c test-fwrite.c test-getaddrinfo.c test-getcwd.c \
+	test-getcwd-lgpl.c test-getdelim.c test-getdtablesize.c \
+	test-getgroups.c test-gethostname.c test-getline.c \
+	test-getloadavg.c test-getlogin.c test-getndelim2.c \
+	test-getopt-gnu.c test-getopt-posix.c test-getprogname.c \
+	test-getrusage.c test-gettimeofday.c test-hard-locale.c \
+	test-hash.c test-i-ring.c test-iconv.c test-iconv-h.c \
+	test-ignore-value.c test-inet_ntop.c test-inet_pton.c \
+	test-ino-map.c test-intprops.c test-inttostr.c test-inttypes.c \
+	test-ioctl.c test-isatty.c test-isblank.c test-isnand-nolibm.c \
+	test-isnanf-nolibm.c test-isnanl-nolibm.c test-iswblank.c \
+	test-iswdigit.c test-iswxdigit.c test-langinfo.c test-lchmod.c \
+	test-lchown.c test-limits-h.c test-link.c test-linkat.c \
+	test-listen.c test-localcharset.c test-locale.c \
+	test-localeconv.c test-localename.c test-lock.c test-lseek.c \
+	test-lstat.c test-malloc-gnu.c test-malloca.c test-math.c \
+	test-mbrtowc.c test-mbrtowc-w32.c test-mbsalign.c \
+	test-mbscasecmp.c test-mbschr.c test-mbsinit.c \
+	test-mbsrtowcs.c test-mbsstr1.c test-mbsstr2.c test-mbsstr3.c \
+	test-md5.c test-memcasecmp.c test-memchr.c test-memchr2.c \
+	test-memcoll.c test-memrchr.c test-mkdir.c test-mkfifo.c \
+	test-mknod.c test-nanosleep.c test-netdb.c test-netinet_in.c \
+	test-nl_langinfo.c test-nl_langinfo-mt.c test-nstrftime.c \
+	$(test_once1_SOURCES) $(test_once2_SOURCES) test-open.c \
+	test-openat.c test-openat-safer.c test-parse-datetime.c \
+	test-pathmax.c test-perror.c test-perror2.c test-pipe.c \
+	test-pipe2.c test-posixtm.c test-printf-frexp.c \
+	test-printf-frexpl.c test-priv-set.c test-pthread.c \
+	test-pthread-cond.c test-pthread-mutex.c test-pthread-thread.c \
+	test-pthread_sigmask1.c test-pthread_sigmask2.c \
+	test-quotearg-simple.c test-raise.c test-rand-isaac.c \
+	test-read.c test-read-file.c test-readlink.c test-readlinkat.c \
+	test-readtokens.c test-realloc-gnu.c test-regex.c \
+	test-remove.c test-rename.c test-renameat.c test-renameatu.c \
+	test-rmdir.c test-rwlock1.c test-sameacls.c test-sched.c \
+	test-select.c test-select-fd.c test-select-stdin.c \
+	test-set-mode-acl.c test-setenv.c test-setlocale1.c \
+	test-setlocale2.c test-setlocale_null.c \
+	test-setlocale_null-mt-all.c test-setlocale_null-mt-one.c \
+	test-setsockopt.c test-sha1.c test-sha256.c test-sha512.c \
+	test-sigaction.c test-signal-h.c test-signbit.c \
+	test-sigprocmask.c test-sleep.c test-snprintf.c test-sockets.c \
+	test-stat.c test-stat-time.c test-statat.c test-stdalign.c \
+	test-stdbool.c test-stddef.c test-stdint.c test-stdio.c \
+	test-stdlib.c test-strerror.c test-strerror_r.c \
+	test-striconv.c test-string.c test-strncat.c test-strnlen.c \
+	test-strsignal.c test-strtod.c test-strtod1.c test-strtoimax.c \
+	test-strtold.c test-strtold1.c test-strtoll.c test-strtoull.c \
+	test-strtoumax.c test-symlink.c test-symlinkat.c \
+	test-sys_ioctl.c test-sys_resource.c test-sys_select.c \
+	test-sys_socket.c test-sys_stat.c test-sys_time.c \
+	test-sys_types.c test-sys_uio.c test-sys_utsname.c \
+	test-sys_wait.c test-termios.c test-thread_create.c \
+	test-thread_self.c test-time.c test-timespec.c test-tls.c \
+	test-u64.c $(test_u8_mbtoucr_SOURCES) \
+	$(test_u8_uctomb_SOURCES) $(test_uc_width_SOURCES) \
+	$(test_uc_width2_SOURCES) test-uname.c test-unistd.c \
+	test-unlink.c test-unlinkat.c test-unsetenv.c test-userspec.c \
+	test-usleep.c test-utime.c test-utime-h.c test-utimens.c \
+	test-utimensat.c test-vasnprintf.c test-vasprintf.c \
+	test-vasprintf-posix.c test-verify.c test-verify-try.c \
+	test-version-etc.c test-vfprintf-posix.c test-vprintf-posix.c \
+	test-wchar.c test-wcrtomb.c test-wcrtomb-w32.c test-wctype-h.c \
+	test-wcwidth.c test-write.c test-xalloc-die.c \
+	test-xfprintf-posix.c test-xprintf-posix.c test-xstrtoimax.c \
+	test-xstrtol.c test-xstrtoul.c test-xstrtoumax.c \
+	test-xvasprintf.c test-yesno.c
+DIST_SOURCES = $(libtests_a_SOURCES) $(EXTRA_libtests_a_SOURCES) \
+	bench-md5.c bench-sha1.c bench-sha224.c bench-sha256.c \
+	bench-sha384.c bench-sha512.c $(current_locale_SOURCES) \
+	test-accept.c test-alignof.c test-alloca-opt.c \
+	test-areadlink.c test-areadlink-with-size.c test-areadlinkat.c \
+	test-argmatch.c test-argv-iter.c test-arpa_inet.c \
+	test-base32.c test-base64.c test-binary-io.c test-bind.c \
+	test-bitrotate.c test-btowc.c test-byteswap.c test-c-ctype.c \
+	test-c-strcasecmp.c test-c-strncasecmp.c test-calloc-gnu.c \
+	test-canonicalize.c test-chdir.c test-chown.c test-cloexec.c \
+	test-close.c test-closein.c test-connect.c test-copy-acl.c \
+	test-count-leading-zeros.c test-ctype.c test-di-set.c \
+	test-dirent.c test-dirent-safer.c test-dirname.c test-dup.c \
+	test-dup-safer.c test-dup2.c test-environ.c test-errno.c \
+	test-exclude.c test-faccessat.c test-fadvise.c test-fchdir.c \
+	test-fchmodat.c test-fchownat.c test-fclose.c test-fcntl.c \
+	test-fcntl-h.c test-fcntl-safer.c test-fdatasync.c \
+	test-fdopen.c test-fdopendir.c test-fdutimensat.c \
+	test-fflush.c test-fflush2.c test-fgetc.c test-file-has-acl.c \
+	test-filenamecat.c test-filevercmp.c test-float.c \
+	test-fnmatch.c test-fnmatch-h.c test-fopen.c \
+	test-fopen-safer.c test-fpending.c test-fpurge.c test-fputc.c \
+	test-fread.c test-freadahead.c test-freading.c test-freadptr.c \
+	test-freadptr2.c test-freadseek.c test-freopen.c \
+	test-freopen-safer.c $(test_frexp_nolibm_SOURCES) \
+	$(test_frexpl_nolibm_SOURCES) test-fseek.c test-fseeko.c \
+	test-fseeko3.c test-fseeko4.c test-fseterr.c test-fstat.c \
+	test-fstatat.c test-fsync.c test-ftell.c test-ftell3.c \
+	test-ftello.c test-ftello3.c test-ftello4.c test-ftruncate.c \
+	test-futimens.c test-fwrite.c test-getaddrinfo.c test-getcwd.c \
+	test-getcwd-lgpl.c test-getdelim.c test-getdtablesize.c \
+	test-getgroups.c test-gethostname.c test-getline.c \
+	test-getloadavg.c test-getlogin.c test-getndelim2.c \
+	test-getopt-gnu.c test-getopt-posix.c test-getprogname.c \
+	test-getrusage.c test-gettimeofday.c test-hard-locale.c \
+	test-hash.c test-i-ring.c test-iconv.c test-iconv-h.c \
+	test-ignore-value.c test-inet_ntop.c test-inet_pton.c \
+	test-ino-map.c test-intprops.c test-inttostr.c test-inttypes.c \
+	test-ioctl.c test-isatty.c test-isblank.c test-isnand-nolibm.c \
+	test-isnanf-nolibm.c test-isnanl-nolibm.c test-iswblank.c \
+	test-iswdigit.c test-iswxdigit.c test-langinfo.c test-lchmod.c \
+	test-lchown.c test-limits-h.c test-link.c test-linkat.c \
+	test-listen.c test-localcharset.c test-locale.c \
+	test-localeconv.c test-localename.c test-lock.c test-lseek.c \
+	test-lstat.c test-malloc-gnu.c test-malloca.c test-math.c \
+	test-mbrtowc.c test-mbrtowc-w32.c test-mbsalign.c \
+	test-mbscasecmp.c test-mbschr.c test-mbsinit.c \
+	test-mbsrtowcs.c test-mbsstr1.c test-mbsstr2.c test-mbsstr3.c \
+	test-md5.c test-memcasecmp.c test-memchr.c test-memchr2.c \
+	test-memcoll.c test-memrchr.c test-mkdir.c test-mkfifo.c \
+	test-mknod.c test-nanosleep.c test-netdb.c test-netinet_in.c \
+	test-nl_langinfo.c test-nl_langinfo-mt.c test-nstrftime.c \
+	$(test_once1_SOURCES) $(test_once2_SOURCES) test-open.c \
+	test-openat.c test-openat-safer.c test-parse-datetime.c \
+	test-pathmax.c test-perror.c test-perror2.c test-pipe.c \
+	test-pipe2.c test-posixtm.c test-printf-frexp.c \
+	test-printf-frexpl.c test-priv-set.c test-pthread.c \
+	test-pthread-cond.c test-pthread-mutex.c test-pthread-thread.c \
+	test-pthread_sigmask1.c test-pthread_sigmask2.c \
+	test-quotearg-simple.c test-raise.c test-rand-isaac.c \
+	test-read.c test-read-file.c test-readlink.c test-readlinkat.c \
+	test-readtokens.c test-realloc-gnu.c test-regex.c \
+	test-remove.c test-rename.c test-renameat.c test-renameatu.c \
+	test-rmdir.c test-rwlock1.c test-sameacls.c test-sched.c \
+	test-select.c test-select-fd.c test-select-stdin.c \
+	test-set-mode-acl.c test-setenv.c test-setlocale1.c \
+	test-setlocale2.c test-setlocale_null.c \
+	test-setlocale_null-mt-all.c test-setlocale_null-mt-one.c \
+	test-setsockopt.c test-sha1.c test-sha256.c test-sha512.c \
+	test-sigaction.c test-signal-h.c test-signbit.c \
+	test-sigprocmask.c test-sleep.c test-snprintf.c test-sockets.c \
+	test-stat.c test-stat-time.c test-statat.c test-stdalign.c \
+	test-stdbool.c test-stddef.c test-stdint.c test-stdio.c \
+	test-stdlib.c test-strerror.c test-strerror_r.c \
+	test-striconv.c test-string.c test-strncat.c test-strnlen.c \
+	test-strsignal.c test-strtod.c test-strtod1.c test-strtoimax.c \
+	test-strtold.c test-strtold1.c test-strtoll.c test-strtoull.c \
+	test-strtoumax.c test-symlink.c test-symlinkat.c \
+	test-sys_ioctl.c test-sys_resource.c test-sys_select.c \
+	test-sys_socket.c test-sys_stat.c test-sys_time.c \
+	test-sys_types.c test-sys_uio.c test-sys_utsname.c \
+	test-sys_wait.c test-termios.c test-thread_create.c \
+	test-thread_self.c test-time.c test-timespec.c test-tls.c \
+	test-u64.c $(test_u8_mbtoucr_SOURCES) \
+	$(test_u8_uctomb_SOURCES) $(test_uc_width_SOURCES) \
+	$(test_uc_width2_SOURCES) test-uname.c test-unistd.c \
+	test-unlink.c test-unlinkat.c test-unsetenv.c test-userspec.c \
+	test-usleep.c test-utime.c test-utime-h.c test-utimens.c \
+	test-utimensat.c test-vasnprintf.c test-vasprintf.c \
+	test-vasprintf-posix.c test-verify.c test-verify-try.c \
+	test-version-etc.c test-vfprintf-posix.c test-vprintf-posix.c \
+	test-wchar.c test-wcrtomb.c test-wcrtomb-w32.c test-wctype-h.c \
+	test-wcwidth.c test-write.c test-xalloc-die.c \
+	test-xfprintf-posix.c test-xprintf-posix.c test-xstrtoimax.c \
+	test-xstrtol.c test-xstrtoul.c test-xstrtoumax.c \
+	test-xvasprintf.c test-yesno.c
+RECURSIVE_TARGETS = all-recursive check-recursive cscopelist-recursive \
+	ctags-recursive dvi-recursive html-recursive info-recursive \
+	install-data-recursive install-dvi-recursive \
+	install-exec-recursive install-html-recursive \
+	install-info-recursive install-pdf-recursive \
+	install-ps-recursive install-recursive installcheck-recursive \
+	installdirs-recursive pdf-recursive ps-recursive \
+	tags-recursive uninstall-recursive
+am__can_run_installinfo = \
+  case $$AM_UPDATE_INFO_DIR in \
+    n|no|NO) false;; \
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+am__vpath_adj = case $$p in \
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+  esac;
+am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`;
+am__install_max = 40
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+am__nobase_strip = \
+  for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||"
+am__nobase_list = $(am__nobase_strip_setup); \
+  for p in $$list; do echo "$$p $$p"; done | \
+  sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \
+  $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \
+    if (++n[$$2] == $(am__install_max)) \
+      { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \
+    END { for (dir in files) print dir, files[dir] }'
+am__base_list = \
+  sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \
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+am__uninstall_files_from_dir = { \
+  test -z "$$files" \
+    || { test ! -d "$$dir" && test ! -f "$$dir" && test ! -r "$$dir"; } \
+    || { echo " ( cd '$$dir' && rm -f" $$files ")"; \
+         $(am__cd) "$$dir" && rm -f $$files; }; \
+  }
+man1dir = $(mandir)/man1
+NROFF = nroff
+MANS = $(man1_MANS)
+HEADERS = $(noinst_HEADERS)
+RECURSIVE_CLEAN_TARGETS = mostlyclean-recursive clean-recursive	\
+  distclean-recursive maintainer-clean-recursive
+am__recursive_targets = \
+  $(RECURSIVE_TARGETS) \
+  $(RECURSIVE_CLEAN_TARGETS) \
+  $(am__extra_recursive_targets)
+AM_RECURSIVE_TARGETS = $(am__recursive_targets:-recursive=) TAGS CTAGS \
+	check recheck distdir distdir-am
+am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP)
+# Read a list of newline-separated strings from the standard input,
+# and print each of them once, without duplicates.  Input order is
+# *not* preserved.
+am__uniquify_input = $(AWK) '\
+  BEGIN { nonempty = 0; } \
+  { items[$$0] = 1; nonempty = 1; } \
+  END { if (nonempty) { for (i in items) print i; }; } \
+'
+# Make sure the list of sources is unique.  This is necessary because,
+# e.g., the same source file might be shared among _SOURCES variables
+# for different programs/libraries.
+am__define_uniq_tagged_files = \
+  list='$(am__tagged_files)'; \
+  unique=`for i in $$list; do \
+    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+  done | $(am__uniquify_input)`
+ETAGS = etags
+CTAGS = ctags
+am__tty_colors_dummy = \
+  mgn= red= grn= lgn= blu= brg= std=; \
+  am__color_tests=no
+am__tty_colors = { \
+  $(am__tty_colors_dummy); \
+  if test "X$(AM_COLOR_TESTS)" = Xno; then \
+    am__color_tests=no; \
+  elif test "X$(AM_COLOR_TESTS)" = Xalways; then \
+    am__color_tests=yes; \
+  elif test "X$$TERM" != Xdumb && { test -t 1; } 2>/dev/null; then \
+    am__color_tests=yes; \
+  fi; \
+  if test $$am__color_tests = yes; then \
+    red=''; \
+    grn=''; \
+    lgn=''; \
+    blu=''; \
+    mgn=''; \
+    brg=''; \
+    std=''; \
+  fi; \
+}
+am__recheck_rx = ^[ 	]*:recheck:[ 	]*
+am__global_test_result_rx = ^[ 	]*:global-test-result:[ 	]*
+am__copy_in_global_log_rx = ^[ 	]*:copy-in-global-log:[ 	]*
+# A command that, given a newline-separated list of test names on the
+# standard input, print the name of the tests that are to be re-run
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+am__list_recheck_tests = $(AWK) '{ \
+  recheck = 1; \
+  while ((rc = (getline line < ($$0 ".trs"))) != 0) \
+    { \
+      if (rc < 0) \
+        { \
+          if ((getline line2 < ($$0 ".log")) < 0) \
+	    recheck = 0; \
+          break; \
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+        { \
+          recheck = 0; \
+          break; \
+        } \
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+        { \
+          break; \
+        } \
+    }; \
+  if (recheck) \
+    print $$0; \
+  close ($$0 ".trs"); \
+  close ($$0 ".log"); \
+}'
+# A command that, given a newline-separated list of test names on the
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+am__create_global_log = $(AWK) ' \
+function fatal(msg) \
+{ \
+  print "fatal: making $@: " msg | "cat >&2"; \
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+} \
+function rst_section(header) \
+{ \
+  print header; \
+  len = length(header); \
+  for (i = 1; i <= len; i = i + 1) \
+    printf "="; \
+  printf "\n\n"; \
+} \
+{ \
+  copy_in_global_log = 1; \
+  global_test_result = "RUN"; \
+  while ((rc = (getline line < ($$0 ".trs"))) != 0) \
+    { \
+      if (rc < 0) \
+         fatal("failed to read from " $$0 ".trs"); \
+      if (line ~ /$(am__global_test_result_rx)/) \
+        { \
+          sub("$(am__global_test_result_rx)", "", line); \
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+    }; \
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+      while ((rc = (getline line < ($$0 ".log"))) != 0) \
+      { \
+        if (rc < 0) \
+          fatal("failed to read from " $$0 ".log"); \
+        print line; \
+      }; \
+      printf "\n"; \
+    }; \
+  close ($$0 ".trs"); \
+  close ($$0 ".log"); \
+}'
+# Restructured Text title.
+am__rst_title = { sed 's/.*/   &   /;h;s/./=/g;p;x;s/ *$$//;p;g' && echo; }
+# Solaris 10 'make', and several other traditional 'make' implementations,
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+  --color-tests "$$am__color_tests" \
+  --enable-hard-errors "$$am__enable_hard_errors" \
+  --expect-failure "$$am__expect_failure"
+# To be inserted before the command running the test.  Creates the
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+# developer- defined test setup AM_TESTS_ENVIRONMENT (if any), and
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+$(am__sh_e_setup);					\
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+$(am__tty_colors);					\
+srcdir=$(srcdir); export srcdir;			\
+case "$@" in						\
+  */*) am__odir=`echo "./$@" | sed 's|/[^/]*$$||'`;;	\
+    *) am__odir=.;; 					\
+esac;							\
+test "x$$am__odir" = x"." || test -d "$$am__odir" 	\
+  || $(MKDIR_P) "$$am__odir" || exit $$?;		\
+if test -f "./$$f"; then dir=./;			\
+elif test -f "$$f"; then dir=;				\
+else dir="$(srcdir)/"; fi;				\
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+if test -n '$(DISABLE_HARD_ERRORS)'; then		\
+  am__enable_hard_errors=no; 				\
+else							\
+  am__enable_hard_errors=yes; 				\
+fi; 							\
+case " $(XFAIL_TESTS) " in				\
+  *[\ \	]$$f[\ \	]* | *[\ \	]$$dir$$f[\ \	]*) \
+    am__expect_failure=yes;;				\
+  *)							\
+    am__expect_failure=no;;				\
+esac; 							\
+$(AM_TESTS_ENVIRONMENT) $(TESTS_ENVIRONMENT)
+# A shell command to get the names of the tests scripts with any registered
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+# '$bases'.  This honors runtime overriding of TESTS and TEST_LOGS.  Sadly,
+# we cannot use something simpler, involving e.g., "$(TEST_LOGS:.log=)",
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+am__set_TESTS_bases = \
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+  bases=`for i in $$bases; do echo $$i; done | sed 's/\.log$$//'`; \
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+RECHECK_LOGS = $(TEST_LOGS)
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+  case '$@' in \
+    */*) \
+      case '$*' in \
+        */*) b='$*';; \
+          *) b=`echo '$@' | sed 's/\.log$$//'`; \
+       esac;; \
+    *) \
+      b='$*';; \
+  esac
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+am__test_logs2 = $(am__test_logs1:@EXEEXT@.log=.log)
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+TEST_LOG_DRIVER = $(SHELL) $(top_srcdir)/build-aux/test-driver
+TEST_LOG_COMPILE = $(TEST_LOG_COMPILER) $(AM_TEST_LOG_FLAGS) \
+	$(TEST_LOG_FLAGS)
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+am__DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/gnulib.mk \
+	$(top_srcdir)/build-aux/depcomp \
+	$(top_srcdir)/build-aux/test-driver
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+  dir0=`pwd`; \
+  sed_first='s,^\([^/]*\)/.*$$,\1,'; \
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+  sed_butlast='s,/*[^/]*$$,,'; \
+  while test -n "$$dir1"; do \
+    first=`echo "$$dir1" | sed -e "$$sed_first"`; \
+    if test "$$first" != "."; then \
+      if test "$$first" = ".."; then \
+        dir2=`echo "$$dir0" | sed -e "$$sed_last"`/"$$dir2"; \
+        dir0=`echo "$$dir0" | sed -e "$$sed_butlast"`; \
+      else \
+        first2=`echo "$$dir2" | sed -e "$$sed_first"`; \
+        if test "$$first2" = "$$first"; then \
+          dir2=`echo "$$dir2" | sed -e "$$sed_rest"`; \
+        else \
+          dir2="../$$dir2"; \
+        fi; \
+        dir0="$$dir0"/"$$first"; \
+      fi; \
+    fi; \
+    dir1=`echo "$$dir1" | sed -e "$$sed_rest"`; \
+  done; \
+  reldir="$$dir2"
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+ENOLINK_VALUE = @ENOLINK_VALUE@
+EOVERFLOW_HIDDEN = @EOVERFLOW_HIDDEN@
+EOVERFLOW_VALUE = @EOVERFLOW_VALUE@
+ERRNO_H = @ERRNO_H@
+EXEEXT = @EXEEXT@
+FLOAT_H = @FLOAT_H@
+FNMATCH_H = @FNMATCH_H@
+GETADDRINFO_LIB = @GETADDRINFO_LIB@
+GETHOSTNAME_LIB = @GETHOSTNAME_LIB@
+GETLOADAVG_LIBS = @GETLOADAVG_LIBS@
+GETOPT_CDEFS_H = @GETOPT_CDEFS_H@
+GETOPT_H = @GETOPT_H@
+GETTEXT_MACRO_VERSION = @GETTEXT_MACRO_VERSION@
+GLIBC21 = @GLIBC21@
+GMSGFMT = @GMSGFMT@
+GMSGFMT_015 = @GMSGFMT_015@
+GNULIB_ACCEPT = @GNULIB_ACCEPT@
+GNULIB_ACCEPT4 = @GNULIB_ACCEPT4@
+GNULIB_ACCESS = @GNULIB_ACCESS@
+GNULIB_ACOSF = @GNULIB_ACOSF@
+GNULIB_ACOSL = @GNULIB_ACOSL@
+GNULIB_ALPHASORT = @GNULIB_ALPHASORT@
+GNULIB_ASINF = @GNULIB_ASINF@
+GNULIB_ASINL = @GNULIB_ASINL@
+GNULIB_ATAN2F = @GNULIB_ATAN2F@
+GNULIB_ATANF = @GNULIB_ATANF@
+GNULIB_ATANL = @GNULIB_ATANL@
+GNULIB_ATOLL = @GNULIB_ATOLL@
+GNULIB_BIND = @GNULIB_BIND@
+GNULIB_BTOWC = @GNULIB_BTOWC@
+GNULIB_CALLOC_POSIX = @GNULIB_CALLOC_POSIX@
+GNULIB_CANONICALIZE_FILE_NAME = @GNULIB_CANONICALIZE_FILE_NAME@
+GNULIB_CBRT = @GNULIB_CBRT@
+GNULIB_CBRTF = @GNULIB_CBRTF@
+GNULIB_CBRTL = @GNULIB_CBRTL@
+GNULIB_CEIL = @GNULIB_CEIL@
+GNULIB_CEILF = @GNULIB_CEILF@
+GNULIB_CEILL = @GNULIB_CEILL@
+GNULIB_CHDIR = @GNULIB_CHDIR@
+GNULIB_CHOWN = @GNULIB_CHOWN@
+GNULIB_CLOSE = @GNULIB_CLOSE@
+GNULIB_CLOSEDIR = @GNULIB_CLOSEDIR@
+GNULIB_CONNECT = @GNULIB_CONNECT@
+GNULIB_COPYSIGN = @GNULIB_COPYSIGN@
+GNULIB_COPYSIGNF = @GNULIB_COPYSIGNF@
+GNULIB_COPYSIGNL = @GNULIB_COPYSIGNL@
+GNULIB_COPY_FILE_RANGE = @GNULIB_COPY_FILE_RANGE@
+GNULIB_COSF = @GNULIB_COSF@
+GNULIB_COSHF = @GNULIB_COSHF@
+GNULIB_COSL = @GNULIB_COSL@
+GNULIB_CREAT = @GNULIB_CREAT@
+GNULIB_CTIME = @GNULIB_CTIME@
+GNULIB_DIRFD = @GNULIB_DIRFD@
+GNULIB_DPRINTF = @GNULIB_DPRINTF@
+GNULIB_DUP = @GNULIB_DUP@
+GNULIB_DUP2 = @GNULIB_DUP2@
+GNULIB_DUP3 = @GNULIB_DUP3@
+GNULIB_DUPLOCALE = @GNULIB_DUPLOCALE@
+GNULIB_ENVIRON = @GNULIB_ENVIRON@
+GNULIB_EUIDACCESS = @GNULIB_EUIDACCESS@
+GNULIB_EXP2 = @GNULIB_EXP2@
+GNULIB_EXP2F = @GNULIB_EXP2F@
+GNULIB_EXP2L = @GNULIB_EXP2L@
+GNULIB_EXPF = @GNULIB_EXPF@
+GNULIB_EXPL = @GNULIB_EXPL@
+GNULIB_EXPLICIT_BZERO = @GNULIB_EXPLICIT_BZERO@
+GNULIB_EXPM1 = @GNULIB_EXPM1@
+GNULIB_EXPM1F = @GNULIB_EXPM1F@
+GNULIB_EXPM1L = @GNULIB_EXPM1L@
+GNULIB_FABSF = @GNULIB_FABSF@
+GNULIB_FABSL = @GNULIB_FABSL@
+GNULIB_FACCESSAT = @GNULIB_FACCESSAT@
+GNULIB_FCHDIR = @GNULIB_FCHDIR@
+GNULIB_FCHMODAT = @GNULIB_FCHMODAT@
+GNULIB_FCHOWNAT = @GNULIB_FCHOWNAT@
+GNULIB_FCLOSE = @GNULIB_FCLOSE@
+GNULIB_FCNTL = @GNULIB_FCNTL@
+GNULIB_FDATASYNC = @GNULIB_FDATASYNC@
+GNULIB_FDOPEN = @GNULIB_FDOPEN@
+GNULIB_FDOPENDIR = @GNULIB_FDOPENDIR@
+GNULIB_FFLUSH = @GNULIB_FFLUSH@
+GNULIB_FFSL = @GNULIB_FFSL@
+GNULIB_FFSLL = @GNULIB_FFSLL@
+GNULIB_FGETC = @GNULIB_FGETC@
+GNULIB_FGETS = @GNULIB_FGETS@
+GNULIB_FLOOR = @GNULIB_FLOOR@
+GNULIB_FLOORF = @GNULIB_FLOORF@
+GNULIB_FLOORL = @GNULIB_FLOORL@
+GNULIB_FMA = @GNULIB_FMA@
+GNULIB_FMAF = @GNULIB_FMAF@
+GNULIB_FMAL = @GNULIB_FMAL@
+GNULIB_FMOD = @GNULIB_FMOD@
+GNULIB_FMODF = @GNULIB_FMODF@
+GNULIB_FMODL = @GNULIB_FMODL@
+GNULIB_FNMATCH = @GNULIB_FNMATCH@
+GNULIB_FOPEN = @GNULIB_FOPEN@
+GNULIB_FPRINTF = @GNULIB_FPRINTF@
+GNULIB_FPRINTF_POSIX = @GNULIB_FPRINTF_POSIX@
+GNULIB_FPURGE = @GNULIB_FPURGE@
+GNULIB_FPUTC = @GNULIB_FPUTC@
+GNULIB_FPUTS = @GNULIB_FPUTS@
+GNULIB_FREAD = @GNULIB_FREAD@
+GNULIB_FREOPEN = @GNULIB_FREOPEN@
+GNULIB_FREXP = @GNULIB_FREXP@
+GNULIB_FREXPF = @GNULIB_FREXPF@
+GNULIB_FREXPL = @GNULIB_FREXPL@
+GNULIB_FSCANF = @GNULIB_FSCANF@
+GNULIB_FSEEK = @GNULIB_FSEEK@
+GNULIB_FSEEKO = @GNULIB_FSEEKO@
+GNULIB_FSTAT = @GNULIB_FSTAT@
+GNULIB_FSTATAT = @GNULIB_FSTATAT@
+GNULIB_FSYNC = @GNULIB_FSYNC@
+GNULIB_FTELL = @GNULIB_FTELL@
+GNULIB_FTELLO = @GNULIB_FTELLO@
+GNULIB_FTRUNCATE = @GNULIB_FTRUNCATE@
+GNULIB_FUTIMENS = @GNULIB_FUTIMENS@
+GNULIB_FWRITE = @GNULIB_FWRITE@
+GNULIB_GETADDRINFO = @GNULIB_GETADDRINFO@
+GNULIB_GETC = @GNULIB_GETC@
+GNULIB_GETCHAR = @GNULIB_GETCHAR@
+GNULIB_GETCWD = @GNULIB_GETCWD@
+GNULIB_GETDELIM = @GNULIB_GETDELIM@
+GNULIB_GETDOMAINNAME = @GNULIB_GETDOMAINNAME@
+GNULIB_GETDTABLESIZE = @GNULIB_GETDTABLESIZE@
+GNULIB_GETGROUPS = @GNULIB_GETGROUPS@
+GNULIB_GETHOSTNAME = @GNULIB_GETHOSTNAME@
+GNULIB_GETLINE = @GNULIB_GETLINE@
+GNULIB_GETLOADAVG = @GNULIB_GETLOADAVG@
+GNULIB_GETLOGIN = @GNULIB_GETLOGIN@
+GNULIB_GETLOGIN_R = @GNULIB_GETLOGIN_R@
+GNULIB_GETOPT_POSIX = @GNULIB_GETOPT_POSIX@
+GNULIB_GETPAGESIZE = @GNULIB_GETPAGESIZE@
+GNULIB_GETPASS = @GNULIB_GETPASS@
+GNULIB_GETPEERNAME = @GNULIB_GETPEERNAME@
+GNULIB_GETRUSAGE = @GNULIB_GETRUSAGE@
+GNULIB_GETSOCKNAME = @GNULIB_GETSOCKNAME@
+GNULIB_GETSOCKOPT = @GNULIB_GETSOCKOPT@
+GNULIB_GETSUBOPT = @GNULIB_GETSUBOPT@
+GNULIB_GETTIMEOFDAY = @GNULIB_GETTIMEOFDAY@
+GNULIB_GETUSERSHELL = @GNULIB_GETUSERSHELL@
+GNULIB_GL_UNISTD_H_GETOPT = @GNULIB_GL_UNISTD_H_GETOPT@
+GNULIB_GRANTPT = @GNULIB_GRANTPT@
+GNULIB_GROUP_MEMBER = @GNULIB_GROUP_MEMBER@
+GNULIB_HYPOT = @GNULIB_HYPOT@
+GNULIB_HYPOTF = @GNULIB_HYPOTF@
+GNULIB_HYPOTL = @GNULIB_HYPOTL@
+GNULIB_ICONV = @GNULIB_ICONV@
+GNULIB_ILOGB = @GNULIB_ILOGB@
+GNULIB_ILOGBF = @GNULIB_ILOGBF@
+GNULIB_ILOGBL = @GNULIB_ILOGBL@
+GNULIB_IMAXABS = @GNULIB_IMAXABS@
+GNULIB_IMAXDIV = @GNULIB_IMAXDIV@
+GNULIB_INET_NTOP = @GNULIB_INET_NTOP@
+GNULIB_INET_PTON = @GNULIB_INET_PTON@
+GNULIB_IOCTL = @GNULIB_IOCTL@
+GNULIB_ISATTY = @GNULIB_ISATTY@
+GNULIB_ISBLANK = @GNULIB_ISBLANK@
+GNULIB_ISFINITE = @GNULIB_ISFINITE@
+GNULIB_ISINF = @GNULIB_ISINF@
+GNULIB_ISNAN = @GNULIB_ISNAN@
+GNULIB_ISNAND = @GNULIB_ISNAND@
+GNULIB_ISNANF = @GNULIB_ISNANF@
+GNULIB_ISNANL = @GNULIB_ISNANL@
+GNULIB_ISWBLANK = @GNULIB_ISWBLANK@
+GNULIB_ISWCTYPE = @GNULIB_ISWCTYPE@
+GNULIB_ISWDIGIT = @GNULIB_ISWDIGIT@
+GNULIB_ISWXDIGIT = @GNULIB_ISWXDIGIT@
+GNULIB_LCHMOD = @GNULIB_LCHMOD@
+GNULIB_LCHOWN = @GNULIB_LCHOWN@
+GNULIB_LDEXPF = @GNULIB_LDEXPF@
+GNULIB_LDEXPL = @GNULIB_LDEXPL@
+GNULIB_LINK = @GNULIB_LINK@
+GNULIB_LINKAT = @GNULIB_LINKAT@
+GNULIB_LISTEN = @GNULIB_LISTEN@
+GNULIB_LOCALECONV = @GNULIB_LOCALECONV@
+GNULIB_LOCALENAME = @GNULIB_LOCALENAME@
+GNULIB_LOCALTIME = @GNULIB_LOCALTIME@
+GNULIB_LOG = @GNULIB_LOG@
+GNULIB_LOG10 = @GNULIB_LOG10@
+GNULIB_LOG10F = @GNULIB_LOG10F@
+GNULIB_LOG10L = @GNULIB_LOG10L@
+GNULIB_LOG1P = @GNULIB_LOG1P@
+GNULIB_LOG1PF = @GNULIB_LOG1PF@
+GNULIB_LOG1PL = @GNULIB_LOG1PL@
+GNULIB_LOG2 = @GNULIB_LOG2@
+GNULIB_LOG2F = @GNULIB_LOG2F@
+GNULIB_LOG2L = @GNULIB_LOG2L@
+GNULIB_LOGB = @GNULIB_LOGB@
+GNULIB_LOGBF = @GNULIB_LOGBF@
+GNULIB_LOGBL = @GNULIB_LOGBL@
+GNULIB_LOGF = @GNULIB_LOGF@
+GNULIB_LOGL = @GNULIB_LOGL@
+GNULIB_LSEEK = @GNULIB_LSEEK@
+GNULIB_LSTAT = @GNULIB_LSTAT@
+GNULIB_MALLOC_POSIX = @GNULIB_MALLOC_POSIX@
+GNULIB_MBRLEN = @GNULIB_MBRLEN@
+GNULIB_MBRTOWC = @GNULIB_MBRTOWC@
+GNULIB_MBSCASECMP = @GNULIB_MBSCASECMP@
+GNULIB_MBSCASESTR = @GNULIB_MBSCASESTR@
+GNULIB_MBSCHR = @GNULIB_MBSCHR@
+GNULIB_MBSCSPN = @GNULIB_MBSCSPN@
+GNULIB_MBSINIT = @GNULIB_MBSINIT@
+GNULIB_MBSLEN = @GNULIB_MBSLEN@
+GNULIB_MBSNCASECMP = @GNULIB_MBSNCASECMP@
+GNULIB_MBSNLEN = @GNULIB_MBSNLEN@
+GNULIB_MBSNRTOWCS = @GNULIB_MBSNRTOWCS@
+GNULIB_MBSPBRK = @GNULIB_MBSPBRK@
+GNULIB_MBSPCASECMP = @GNULIB_MBSPCASECMP@
+GNULIB_MBSRCHR = @GNULIB_MBSRCHR@
+GNULIB_MBSRTOWCS = @GNULIB_MBSRTOWCS@
+GNULIB_MBSSEP = @GNULIB_MBSSEP@
+GNULIB_MBSSPN = @GNULIB_MBSSPN@
+GNULIB_MBSSTR = @GNULIB_MBSSTR@
+GNULIB_MBSTOK_R = @GNULIB_MBSTOK_R@
+GNULIB_MBTOWC = @GNULIB_MBTOWC@
+GNULIB_MEMCHR = @GNULIB_MEMCHR@
+GNULIB_MEMMEM = @GNULIB_MEMMEM@
+GNULIB_MEMPCPY = @GNULIB_MEMPCPY@
+GNULIB_MEMRCHR = @GNULIB_MEMRCHR@
+GNULIB_MKDIRAT = @GNULIB_MKDIRAT@
+GNULIB_MKDTEMP = @GNULIB_MKDTEMP@
+GNULIB_MKFIFO = @GNULIB_MKFIFO@
+GNULIB_MKFIFOAT = @GNULIB_MKFIFOAT@
+GNULIB_MKNOD = @GNULIB_MKNOD@
+GNULIB_MKNODAT = @GNULIB_MKNODAT@
+GNULIB_MKOSTEMP = @GNULIB_MKOSTEMP@
+GNULIB_MKOSTEMPS = @GNULIB_MKOSTEMPS@
+GNULIB_MKSTEMP = @GNULIB_MKSTEMP@
+GNULIB_MKSTEMPS = @GNULIB_MKSTEMPS@
+GNULIB_MKTIME = @GNULIB_MKTIME@
+GNULIB_MODF = @GNULIB_MODF@
+GNULIB_MODFF = @GNULIB_MODFF@
+GNULIB_MODFL = @GNULIB_MODFL@
+GNULIB_NANOSLEEP = @GNULIB_NANOSLEEP@
+GNULIB_NL_LANGINFO = @GNULIB_NL_LANGINFO@
+GNULIB_NONBLOCKING = @GNULIB_NONBLOCKING@
+GNULIB_OBSTACK_PRINTF = @GNULIB_OBSTACK_PRINTF@
+GNULIB_OBSTACK_PRINTF_POSIX = @GNULIB_OBSTACK_PRINTF_POSIX@
+GNULIB_OPEN = @GNULIB_OPEN@
+GNULIB_OPENAT = @GNULIB_OPENAT@
+GNULIB_OPENDIR = @GNULIB_OPENDIR@
+GNULIB_OVERRIDES_STRUCT_STAT = @GNULIB_OVERRIDES_STRUCT_STAT@
+GNULIB_OVERRIDES_WINT_T = @GNULIB_OVERRIDES_WINT_T@
+GNULIB_PCLOSE = @GNULIB_PCLOSE@
+GNULIB_PERROR = @GNULIB_PERROR@
+GNULIB_PIPE = @GNULIB_PIPE@
+GNULIB_PIPE2 = @GNULIB_PIPE2@
+GNULIB_POPEN = @GNULIB_POPEN@
+GNULIB_POSIX_OPENPT = @GNULIB_POSIX_OPENPT@
+GNULIB_POWF = @GNULIB_POWF@
+GNULIB_PREAD = @GNULIB_PREAD@
+GNULIB_PRINTF = @GNULIB_PRINTF@
+GNULIB_PRINTF_POSIX = @GNULIB_PRINTF_POSIX@
+GNULIB_PSELECT = @GNULIB_PSELECT@
+GNULIB_PTHREAD_COND = @GNULIB_PTHREAD_COND@
+GNULIB_PTHREAD_MUTEX = @GNULIB_PTHREAD_MUTEX@
+GNULIB_PTHREAD_MUTEX_TIMEDLOCK = @GNULIB_PTHREAD_MUTEX_TIMEDLOCK@
+GNULIB_PTHREAD_ONCE = @GNULIB_PTHREAD_ONCE@
+GNULIB_PTHREAD_RWLOCK = @GNULIB_PTHREAD_RWLOCK@
+GNULIB_PTHREAD_SIGMASK = @GNULIB_PTHREAD_SIGMASK@
+GNULIB_PTHREAD_SPIN = @GNULIB_PTHREAD_SPIN@
+GNULIB_PTHREAD_THREAD = @GNULIB_PTHREAD_THREAD@
+GNULIB_PTHREAD_TSS = @GNULIB_PTHREAD_TSS@
+GNULIB_PTSNAME = @GNULIB_PTSNAME@
+GNULIB_PTSNAME_R = @GNULIB_PTSNAME_R@
+GNULIB_PUTC = @GNULIB_PUTC@
+GNULIB_PUTCHAR = @GNULIB_PUTCHAR@
+GNULIB_PUTENV = @GNULIB_PUTENV@
+GNULIB_PUTS = @GNULIB_PUTS@
+GNULIB_PWRITE = @GNULIB_PWRITE@
+GNULIB_QSORT_R = @GNULIB_QSORT_R@
+GNULIB_RAISE = @GNULIB_RAISE@
+GNULIB_RANDOM = @GNULIB_RANDOM@
+GNULIB_RANDOM_R = @GNULIB_RANDOM_R@
+GNULIB_RAWMEMCHR = @GNULIB_RAWMEMCHR@
+GNULIB_READ = @GNULIB_READ@
+GNULIB_READDIR = @GNULIB_READDIR@
+GNULIB_READLINK = @GNULIB_READLINK@
+GNULIB_READLINKAT = @GNULIB_READLINKAT@
+GNULIB_REALLOCARRAY = @GNULIB_REALLOCARRAY@
+GNULIB_REALLOC_POSIX = @GNULIB_REALLOC_POSIX@
+GNULIB_REALPATH = @GNULIB_REALPATH@
+GNULIB_RECV = @GNULIB_RECV@
+GNULIB_RECVFROM = @GNULIB_RECVFROM@
+GNULIB_REMAINDER = @GNULIB_REMAINDER@
+GNULIB_REMAINDERF = @GNULIB_REMAINDERF@
+GNULIB_REMAINDERL = @GNULIB_REMAINDERL@
+GNULIB_REMOVE = @GNULIB_REMOVE@
+GNULIB_RENAME = @GNULIB_RENAME@
+GNULIB_RENAMEAT = @GNULIB_RENAMEAT@
+GNULIB_REWINDDIR = @GNULIB_REWINDDIR@
+GNULIB_RINT = @GNULIB_RINT@
+GNULIB_RINTF = @GNULIB_RINTF@
+GNULIB_RINTL = @GNULIB_RINTL@
+GNULIB_RMDIR = @GNULIB_RMDIR@
+GNULIB_ROUND = @GNULIB_ROUND@
+GNULIB_ROUNDF = @GNULIB_ROUNDF@
+GNULIB_ROUNDL = @GNULIB_ROUNDL@
+GNULIB_RPMATCH = @GNULIB_RPMATCH@
+GNULIB_SCANDIR = @GNULIB_SCANDIR@
+GNULIB_SCANF = @GNULIB_SCANF@
+GNULIB_SCHED_YIELD = @GNULIB_SCHED_YIELD@
+GNULIB_SECURE_GETENV = @GNULIB_SECURE_GETENV@
+GNULIB_SELECT = @GNULIB_SELECT@
+GNULIB_SEND = @GNULIB_SEND@
+GNULIB_SENDTO = @GNULIB_SENDTO@
+GNULIB_SETENV = @GNULIB_SETENV@
+GNULIB_SETHOSTNAME = @GNULIB_SETHOSTNAME@
+GNULIB_SETLOCALE = @GNULIB_SETLOCALE@
+GNULIB_SETLOCALE_NULL = @GNULIB_SETLOCALE_NULL@
+GNULIB_SETSOCKOPT = @GNULIB_SETSOCKOPT@
+GNULIB_SHUTDOWN = @GNULIB_SHUTDOWN@
+GNULIB_SIGACTION = @GNULIB_SIGACTION@
+GNULIB_SIGNAL_H_SIGPIPE = @GNULIB_SIGNAL_H_SIGPIPE@
+GNULIB_SIGNBIT = @GNULIB_SIGNBIT@
+GNULIB_SIGPROCMASK = @GNULIB_SIGPROCMASK@
+GNULIB_SINF = @GNULIB_SINF@
+GNULIB_SINHF = @GNULIB_SINHF@
+GNULIB_SINL = @GNULIB_SINL@
+GNULIB_SLEEP = @GNULIB_SLEEP@
+GNULIB_SNPRINTF = @GNULIB_SNPRINTF@
+GNULIB_SOCKET = @GNULIB_SOCKET@
+GNULIB_SPRINTF_POSIX = @GNULIB_SPRINTF_POSIX@
+GNULIB_SQRTF = @GNULIB_SQRTF@
+GNULIB_SQRTL = @GNULIB_SQRTL@
+GNULIB_STAT = @GNULIB_STAT@
+GNULIB_STDIO_H_NONBLOCKING = @GNULIB_STDIO_H_NONBLOCKING@
+GNULIB_STDIO_H_SIGPIPE = @GNULIB_STDIO_H_SIGPIPE@
+GNULIB_STPCPY = @GNULIB_STPCPY@
+GNULIB_STPNCPY = @GNULIB_STPNCPY@
+GNULIB_STRCASESTR = @GNULIB_STRCASESTR@
+GNULIB_STRCHRNUL = @GNULIB_STRCHRNUL@
+GNULIB_STRDUP = @GNULIB_STRDUP@
+GNULIB_STRERROR = @GNULIB_STRERROR@
+GNULIB_STRERROR_R = @GNULIB_STRERROR_R@
+GNULIB_STRFTIME = @GNULIB_STRFTIME@
+GNULIB_STRNCAT = @GNULIB_STRNCAT@
+GNULIB_STRNDUP = @GNULIB_STRNDUP@
+GNULIB_STRNLEN = @GNULIB_STRNLEN@
+GNULIB_STRPBRK = @GNULIB_STRPBRK@
+GNULIB_STRPTIME = @GNULIB_STRPTIME@
+GNULIB_STRSEP = @GNULIB_STRSEP@
+GNULIB_STRSIGNAL = @GNULIB_STRSIGNAL@
+GNULIB_STRSTR = @GNULIB_STRSTR@
+GNULIB_STRTOD = @GNULIB_STRTOD@
+GNULIB_STRTOIMAX = @GNULIB_STRTOIMAX@
+GNULIB_STRTOK_R = @GNULIB_STRTOK_R@
+GNULIB_STRTOLD = @GNULIB_STRTOLD@
+GNULIB_STRTOLL = @GNULIB_STRTOLL@
+GNULIB_STRTOULL = @GNULIB_STRTOULL@
+GNULIB_STRTOUMAX = @GNULIB_STRTOUMAX@
+GNULIB_STRVERSCMP = @GNULIB_STRVERSCMP@
+GNULIB_SYMLINK = @GNULIB_SYMLINK@
+GNULIB_SYMLINKAT = @GNULIB_SYMLINKAT@
+GNULIB_SYSTEM_POSIX = @GNULIB_SYSTEM_POSIX@
+GNULIB_TANF = @GNULIB_TANF@
+GNULIB_TANHF = @GNULIB_TANHF@
+GNULIB_TANL = @GNULIB_TANL@
+GNULIB_TCGETSID = @GNULIB_TCGETSID@
+GNULIB_TEST_WARN_CFLAGS = @GNULIB_TEST_WARN_CFLAGS@
+GNULIB_TIMEGM = @GNULIB_TIMEGM@
+GNULIB_TIME_R = @GNULIB_TIME_R@
+GNULIB_TIME_RZ = @GNULIB_TIME_RZ@
+GNULIB_TMPFILE = @GNULIB_TMPFILE@
+GNULIB_TOWCTRANS = @GNULIB_TOWCTRANS@
+GNULIB_TRUNC = @GNULIB_TRUNC@
+GNULIB_TRUNCATE = @GNULIB_TRUNCATE@
+GNULIB_TRUNCF = @GNULIB_TRUNCF@
+GNULIB_TRUNCL = @GNULIB_TRUNCL@
+GNULIB_TTYNAME_R = @GNULIB_TTYNAME_R@
+GNULIB_TZSET = @GNULIB_TZSET@
+GNULIB_UNAME = @GNULIB_UNAME@
+GNULIB_UNISTD_H_NONBLOCKING = @GNULIB_UNISTD_H_NONBLOCKING@
+GNULIB_UNISTD_H_SIGPIPE = @GNULIB_UNISTD_H_SIGPIPE@
+GNULIB_UNLINK = @GNULIB_UNLINK@
+GNULIB_UNLINKAT = @GNULIB_UNLINKAT@
+GNULIB_UNLOCKPT = @GNULIB_UNLOCKPT@
+GNULIB_UNSETENV = @GNULIB_UNSETENV@
+GNULIB_USLEEP = @GNULIB_USLEEP@
+GNULIB_UTIME = @GNULIB_UTIME@
+GNULIB_UTIMENSAT = @GNULIB_UTIMENSAT@
+GNULIB_VASPRINTF = @GNULIB_VASPRINTF@
+GNULIB_VDPRINTF = @GNULIB_VDPRINTF@
+GNULIB_VFPRINTF = @GNULIB_VFPRINTF@
+GNULIB_VFPRINTF_POSIX = @GNULIB_VFPRINTF_POSIX@
+GNULIB_VFSCANF = @GNULIB_VFSCANF@
+GNULIB_VPRINTF = @GNULIB_VPRINTF@
+GNULIB_VPRINTF_POSIX = @GNULIB_VPRINTF_POSIX@
+GNULIB_VSCANF = @GNULIB_VSCANF@
+GNULIB_VSNPRINTF = @GNULIB_VSNPRINTF@
+GNULIB_VSPRINTF_POSIX = @GNULIB_VSPRINTF_POSIX@
+GNULIB_WAITPID = @GNULIB_WAITPID@
+GNULIB_WARN_CFLAGS = @GNULIB_WARN_CFLAGS@
+GNULIB_WCPCPY = @GNULIB_WCPCPY@
+GNULIB_WCPNCPY = @GNULIB_WCPNCPY@
+GNULIB_WCRTOMB = @GNULIB_WCRTOMB@
+GNULIB_WCSCASECMP = @GNULIB_WCSCASECMP@
+GNULIB_WCSCAT = @GNULIB_WCSCAT@
+GNULIB_WCSCHR = @GNULIB_WCSCHR@
+GNULIB_WCSCMP = @GNULIB_WCSCMP@
+GNULIB_WCSCOLL = @GNULIB_WCSCOLL@
+GNULIB_WCSCPY = @GNULIB_WCSCPY@
+GNULIB_WCSCSPN = @GNULIB_WCSCSPN@
+GNULIB_WCSDUP = @GNULIB_WCSDUP@
+GNULIB_WCSFTIME = @GNULIB_WCSFTIME@
+GNULIB_WCSLEN = @GNULIB_WCSLEN@
+GNULIB_WCSNCASECMP = @GNULIB_WCSNCASECMP@
+GNULIB_WCSNCAT = @GNULIB_WCSNCAT@
+GNULIB_WCSNCMP = @GNULIB_WCSNCMP@
+GNULIB_WCSNCPY = @GNULIB_WCSNCPY@
+GNULIB_WCSNLEN = @GNULIB_WCSNLEN@
+GNULIB_WCSNRTOMBS = @GNULIB_WCSNRTOMBS@
+GNULIB_WCSPBRK = @GNULIB_WCSPBRK@
+GNULIB_WCSRCHR = @GNULIB_WCSRCHR@
+GNULIB_WCSRTOMBS = @GNULIB_WCSRTOMBS@
+GNULIB_WCSSPN = @GNULIB_WCSSPN@
+GNULIB_WCSSTR = @GNULIB_WCSSTR@
+GNULIB_WCSTOK = @GNULIB_WCSTOK@
+GNULIB_WCSWIDTH = @GNULIB_WCSWIDTH@
+GNULIB_WCSXFRM = @GNULIB_WCSXFRM@
+GNULIB_WCTOB = @GNULIB_WCTOB@
+GNULIB_WCTOMB = @GNULIB_WCTOMB@
+GNULIB_WCTRANS = @GNULIB_WCTRANS@
+GNULIB_WCTYPE = @GNULIB_WCTYPE@
+GNULIB_WCWIDTH = @GNULIB_WCWIDTH@
+GNULIB_WMEMCHR = @GNULIB_WMEMCHR@
+GNULIB_WMEMCMP = @GNULIB_WMEMCMP@
+GNULIB_WMEMCPY = @GNULIB_WMEMCPY@
+GNULIB_WMEMMOVE = @GNULIB_WMEMMOVE@
+GNULIB_WMEMSET = @GNULIB_WMEMSET@
+GNULIB_WRITE = @GNULIB_WRITE@
+GNULIB__EXIT = @GNULIB__EXIT@
+GREP = @GREP@
+HAVE_ACCEPT4 = @HAVE_ACCEPT4@
+HAVE_ACOSF = @HAVE_ACOSF@
+HAVE_ACOSL = @HAVE_ACOSL@
+HAVE_ALLOCA_H = @HAVE_ALLOCA_H@
+HAVE_ALPHASORT = @HAVE_ALPHASORT@
+HAVE_ARPA_INET_H = @HAVE_ARPA_INET_H@
+HAVE_ASINF = @HAVE_ASINF@
+HAVE_ASINL = @HAVE_ASINL@
+HAVE_ATAN2F = @HAVE_ATAN2F@
+HAVE_ATANF = @HAVE_ATANF@
+HAVE_ATANL = @HAVE_ATANL@
+HAVE_ATOLL = @HAVE_ATOLL@
+HAVE_BTOWC = @HAVE_BTOWC@
+HAVE_C99_STDINT_H = @HAVE_C99_STDINT_H@
+HAVE_CANONICALIZE_FILE_NAME = @HAVE_CANONICALIZE_FILE_NAME@
+HAVE_CBRT = @HAVE_CBRT@
+HAVE_CBRTF = @HAVE_CBRTF@
+HAVE_CBRTL = @HAVE_CBRTL@
+HAVE_CHOWN = @HAVE_CHOWN@
+HAVE_CLOSEDIR = @HAVE_CLOSEDIR@
+HAVE_COPYSIGN = @HAVE_COPYSIGN@
+HAVE_COPYSIGNL = @HAVE_COPYSIGNL@
+HAVE_COPY_FILE_RANGE = @HAVE_COPY_FILE_RANGE@
+HAVE_COSF = @HAVE_COSF@
+HAVE_COSHF = @HAVE_COSHF@
+HAVE_COSL = @HAVE_COSL@
+HAVE_CRTDEFS_H = @HAVE_CRTDEFS_H@
+HAVE_DECL_ACOSL = @HAVE_DECL_ACOSL@
+HAVE_DECL_ASINL = @HAVE_DECL_ASINL@
+HAVE_DECL_ATANL = @HAVE_DECL_ATANL@
+HAVE_DECL_CBRTF = @HAVE_DECL_CBRTF@
+HAVE_DECL_CBRTL = @HAVE_DECL_CBRTL@
+HAVE_DECL_CEILF = @HAVE_DECL_CEILF@
+HAVE_DECL_CEILL = @HAVE_DECL_CEILL@
+HAVE_DECL_COPYSIGNF = @HAVE_DECL_COPYSIGNF@
+HAVE_DECL_COSL = @HAVE_DECL_COSL@
+HAVE_DECL_DIRFD = @HAVE_DECL_DIRFD@
+HAVE_DECL_ENVIRON = @HAVE_DECL_ENVIRON@
+HAVE_DECL_EXP2 = @HAVE_DECL_EXP2@
+HAVE_DECL_EXP2F = @HAVE_DECL_EXP2F@
+HAVE_DECL_EXP2L = @HAVE_DECL_EXP2L@
+HAVE_DECL_EXPL = @HAVE_DECL_EXPL@
+HAVE_DECL_EXPM1L = @HAVE_DECL_EXPM1L@
+HAVE_DECL_FCHDIR = @HAVE_DECL_FCHDIR@
+HAVE_DECL_FDATASYNC = @HAVE_DECL_FDATASYNC@
+HAVE_DECL_FDOPENDIR = @HAVE_DECL_FDOPENDIR@
+HAVE_DECL_FLOORF = @HAVE_DECL_FLOORF@
+HAVE_DECL_FLOORL = @HAVE_DECL_FLOORL@
+HAVE_DECL_FPURGE = @HAVE_DECL_FPURGE@
+HAVE_DECL_FREEADDRINFO = @HAVE_DECL_FREEADDRINFO@
+HAVE_DECL_FREXPL = @HAVE_DECL_FREXPL@
+HAVE_DECL_FSEEKO = @HAVE_DECL_FSEEKO@
+HAVE_DECL_FTELLO = @HAVE_DECL_FTELLO@
+HAVE_DECL_GAI_STRERROR = @HAVE_DECL_GAI_STRERROR@
+HAVE_DECL_GETADDRINFO = @HAVE_DECL_GETADDRINFO@
+HAVE_DECL_GETDELIM = @HAVE_DECL_GETDELIM@
+HAVE_DECL_GETDOMAINNAME = @HAVE_DECL_GETDOMAINNAME@
+HAVE_DECL_GETLINE = @HAVE_DECL_GETLINE@
+HAVE_DECL_GETLOADAVG = @HAVE_DECL_GETLOADAVG@
+HAVE_DECL_GETLOGIN = @HAVE_DECL_GETLOGIN@
+HAVE_DECL_GETLOGIN_R = @HAVE_DECL_GETLOGIN_R@
+HAVE_DECL_GETNAMEINFO = @HAVE_DECL_GETNAMEINFO@
+HAVE_DECL_GETPAGESIZE = @HAVE_DECL_GETPAGESIZE@
+HAVE_DECL_GETUSERSHELL = @HAVE_DECL_GETUSERSHELL@
+HAVE_DECL_IMAXABS = @HAVE_DECL_IMAXABS@
+HAVE_DECL_IMAXDIV = @HAVE_DECL_IMAXDIV@
+HAVE_DECL_INET_NTOP = @HAVE_DECL_INET_NTOP@
+HAVE_DECL_INET_PTON = @HAVE_DECL_INET_PTON@
+HAVE_DECL_INITSTATE = @HAVE_DECL_INITSTATE@
+HAVE_DECL_LDEXPL = @HAVE_DECL_LDEXPL@
+HAVE_DECL_LOCALTIME_R = @HAVE_DECL_LOCALTIME_R@
+HAVE_DECL_LOG10L = @HAVE_DECL_LOG10L@
+HAVE_DECL_LOG2 = @HAVE_DECL_LOG2@
+HAVE_DECL_LOG2F = @HAVE_DECL_LOG2F@
+HAVE_DECL_LOG2L = @HAVE_DECL_LOG2L@
+HAVE_DECL_LOGB = @HAVE_DECL_LOGB@
+HAVE_DECL_LOGL = @HAVE_DECL_LOGL@
+HAVE_DECL_MEMMEM = @HAVE_DECL_MEMMEM@
+HAVE_DECL_MEMRCHR = @HAVE_DECL_MEMRCHR@
+HAVE_DECL_OBSTACK_PRINTF = @HAVE_DECL_OBSTACK_PRINTF@
+HAVE_DECL_REMAINDER = @HAVE_DECL_REMAINDER@
+HAVE_DECL_REMAINDERL = @HAVE_DECL_REMAINDERL@
+HAVE_DECL_RINTF = @HAVE_DECL_RINTF@
+HAVE_DECL_ROUND = @HAVE_DECL_ROUND@
+HAVE_DECL_ROUNDF = @HAVE_DECL_ROUNDF@
+HAVE_DECL_ROUNDL = @HAVE_DECL_ROUNDL@
+HAVE_DECL_SETENV = @HAVE_DECL_SETENV@
+HAVE_DECL_SETHOSTNAME = @HAVE_DECL_SETHOSTNAME@
+HAVE_DECL_SETSTATE = @HAVE_DECL_SETSTATE@
+HAVE_DECL_SINL = @HAVE_DECL_SINL@
+HAVE_DECL_SNPRINTF = @HAVE_DECL_SNPRINTF@
+HAVE_DECL_SQRTL = @HAVE_DECL_SQRTL@
+HAVE_DECL_STRDUP = @HAVE_DECL_STRDUP@
+HAVE_DECL_STRERROR_R = @HAVE_DECL_STRERROR_R@
+HAVE_DECL_STRNDUP = @HAVE_DECL_STRNDUP@
+HAVE_DECL_STRNLEN = @HAVE_DECL_STRNLEN@
+HAVE_DECL_STRSIGNAL = @HAVE_DECL_STRSIGNAL@
+HAVE_DECL_STRTOIMAX = @HAVE_DECL_STRTOIMAX@
+HAVE_DECL_STRTOK_R = @HAVE_DECL_STRTOK_R@
+HAVE_DECL_STRTOUMAX = @HAVE_DECL_STRTOUMAX@
+HAVE_DECL_TANL = @HAVE_DECL_TANL@
+HAVE_DECL_TCGETSID = @HAVE_DECL_TCGETSID@
+HAVE_DECL_TRUNC = @HAVE_DECL_TRUNC@
+HAVE_DECL_TRUNCATE = @HAVE_DECL_TRUNCATE@
+HAVE_DECL_TRUNCF = @HAVE_DECL_TRUNCF@
+HAVE_DECL_TRUNCL = @HAVE_DECL_TRUNCL@
+HAVE_DECL_TTYNAME_R = @HAVE_DECL_TTYNAME_R@
+HAVE_DECL_UNSETENV = @HAVE_DECL_UNSETENV@
+HAVE_DECL_VSNPRINTF = @HAVE_DECL_VSNPRINTF@
+HAVE_DECL_WCTOB = @HAVE_DECL_WCTOB@
+HAVE_DECL_WCWIDTH = @HAVE_DECL_WCWIDTH@
+HAVE_DIRENT_H = @HAVE_DIRENT_H@
+HAVE_DPRINTF = @HAVE_DPRINTF@
+HAVE_DUP2 = @HAVE_DUP2@
+HAVE_DUP3 = @HAVE_DUP3@
+HAVE_DUPLOCALE = @HAVE_DUPLOCALE@
+HAVE_EUIDACCESS = @HAVE_EUIDACCESS@
+HAVE_EXPF = @HAVE_EXPF@
+HAVE_EXPL = @HAVE_EXPL@
+HAVE_EXPLICIT_BZERO = @HAVE_EXPLICIT_BZERO@
+HAVE_EXPM1 = @HAVE_EXPM1@
+HAVE_EXPM1F = @HAVE_EXPM1F@
+HAVE_FABSF = @HAVE_FABSF@
+HAVE_FABSL = @HAVE_FABSL@
+HAVE_FACCESSAT = @HAVE_FACCESSAT@
+HAVE_FCHDIR = @HAVE_FCHDIR@
+HAVE_FCHMODAT = @HAVE_FCHMODAT@
+HAVE_FCHOWNAT = @HAVE_FCHOWNAT@
+HAVE_FCNTL = @HAVE_FCNTL@
+HAVE_FDATASYNC = @HAVE_FDATASYNC@
+HAVE_FDOPENDIR = @HAVE_FDOPENDIR@
+HAVE_FEATURES_H = @HAVE_FEATURES_H@
+HAVE_FFSL = @HAVE_FFSL@
+HAVE_FFSLL = @HAVE_FFSLL@
+HAVE_FMA = @HAVE_FMA@
+HAVE_FMAF = @HAVE_FMAF@
+HAVE_FMAL = @HAVE_FMAL@
+HAVE_FMODF = @HAVE_FMODF@
+HAVE_FMODL = @HAVE_FMODL@
+HAVE_FNMATCH = @HAVE_FNMATCH@
+HAVE_FNMATCH_H = @HAVE_FNMATCH_H@
+HAVE_FREELOCALE = @HAVE_FREELOCALE@
+HAVE_FREXPF = @HAVE_FREXPF@
+HAVE_FSEEKO = @HAVE_FSEEKO@
+HAVE_FSTATAT = @HAVE_FSTATAT@
+HAVE_FSYNC = @HAVE_FSYNC@
+HAVE_FTELLO = @HAVE_FTELLO@
+HAVE_FTRUNCATE = @HAVE_FTRUNCATE@
+HAVE_FUTIMENS = @HAVE_FUTIMENS@
+HAVE_GETDTABLESIZE = @HAVE_GETDTABLESIZE@
+HAVE_GETGROUPS = @HAVE_GETGROUPS@
+HAVE_GETHOSTNAME = @HAVE_GETHOSTNAME@
+HAVE_GETLOGIN = @HAVE_GETLOGIN@
+HAVE_GETOPT_H = @HAVE_GETOPT_H@
+HAVE_GETPAGESIZE = @HAVE_GETPAGESIZE@
+HAVE_GETPASS = @HAVE_GETPASS@
+HAVE_GETRUSAGE = @HAVE_GETRUSAGE@
+HAVE_GETSUBOPT = @HAVE_GETSUBOPT@
+HAVE_GETTIMEOFDAY = @HAVE_GETTIMEOFDAY@
+HAVE_GRANTPT = @HAVE_GRANTPT@
+HAVE_GROUP_MEMBER = @HAVE_GROUP_MEMBER@
+HAVE_HYPOTF = @HAVE_HYPOTF@
+HAVE_HYPOTL = @HAVE_HYPOTL@
+HAVE_ILOGB = @HAVE_ILOGB@
+HAVE_ILOGBF = @HAVE_ILOGBF@
+HAVE_ILOGBL = @HAVE_ILOGBL@
+HAVE_IMAXDIV_T = @HAVE_IMAXDIV_T@
+HAVE_INITSTATE = @HAVE_INITSTATE@
+HAVE_INTTYPES_H = @HAVE_INTTYPES_H@
+HAVE_ISBLANK = @HAVE_ISBLANK@
+HAVE_ISNAND = @HAVE_ISNAND@
+HAVE_ISNANF = @HAVE_ISNANF@
+HAVE_ISNANL = @HAVE_ISNANL@
+HAVE_ISWBLANK = @HAVE_ISWBLANK@
+HAVE_ISWCNTRL = @HAVE_ISWCNTRL@
+HAVE_LANGINFO_ALTMON = @HAVE_LANGINFO_ALTMON@
+HAVE_LANGINFO_CODESET = @HAVE_LANGINFO_CODESET@
+HAVE_LANGINFO_ERA = @HAVE_LANGINFO_ERA@
+HAVE_LANGINFO_H = @HAVE_LANGINFO_H@
+HAVE_LANGINFO_T_FMT_AMPM = @HAVE_LANGINFO_T_FMT_AMPM@
+HAVE_LANGINFO_YESEXPR = @HAVE_LANGINFO_YESEXPR@
+HAVE_LCHMOD = @HAVE_LCHMOD@
+HAVE_LCHOWN = @HAVE_LCHOWN@
+HAVE_LDEXPF = @HAVE_LDEXPF@
+HAVE_LINK = @HAVE_LINK@
+HAVE_LINKAT = @HAVE_LINKAT@
+HAVE_LOG10F = @HAVE_LOG10F@
+HAVE_LOG10L = @HAVE_LOG10L@
+HAVE_LOG1P = @HAVE_LOG1P@
+HAVE_LOG1PF = @HAVE_LOG1PF@
+HAVE_LOG1PL = @HAVE_LOG1PL@
+HAVE_LOGBF = @HAVE_LOGBF@
+HAVE_LOGBL = @HAVE_LOGBL@
+HAVE_LOGF = @HAVE_LOGF@
+HAVE_LOGL = @HAVE_LOGL@
+HAVE_LSTAT = @HAVE_LSTAT@
+HAVE_MAX_ALIGN_T = @HAVE_MAX_ALIGN_T@
+HAVE_MBRLEN = @HAVE_MBRLEN@
+HAVE_MBRTOWC = @HAVE_MBRTOWC@
+HAVE_MBSINIT = @HAVE_MBSINIT@
+HAVE_MBSLEN = @HAVE_MBSLEN@
+HAVE_MBSNRTOWCS = @HAVE_MBSNRTOWCS@
+HAVE_MBSRTOWCS = @HAVE_MBSRTOWCS@
+HAVE_MBTOWC = @HAVE_MBTOWC@
+HAVE_MEMCHR = @HAVE_MEMCHR@
+HAVE_MEMPCPY = @HAVE_MEMPCPY@
+HAVE_MKDIRAT = @HAVE_MKDIRAT@
+HAVE_MKDTEMP = @HAVE_MKDTEMP@
+HAVE_MKFIFO = @HAVE_MKFIFO@
+HAVE_MKFIFOAT = @HAVE_MKFIFOAT@
+HAVE_MKNOD = @HAVE_MKNOD@
+HAVE_MKNODAT = @HAVE_MKNODAT@
+HAVE_MKOSTEMP = @HAVE_MKOSTEMP@
+HAVE_MKOSTEMPS = @HAVE_MKOSTEMPS@
+HAVE_MKSTEMP = @HAVE_MKSTEMP@
+HAVE_MKSTEMPS = @HAVE_MKSTEMPS@
+HAVE_MODFF = @HAVE_MODFF@
+HAVE_MODFL = @HAVE_MODFL@
+HAVE_MSVC_INVALID_PARAMETER_HANDLER = @HAVE_MSVC_INVALID_PARAMETER_HANDLER@
+HAVE_NANOSLEEP = @HAVE_NANOSLEEP@
+HAVE_NETDB_H = @HAVE_NETDB_H@
+HAVE_NETINET_IN_H = @HAVE_NETINET_IN_H@
+HAVE_NEWLOCALE = @HAVE_NEWLOCALE@
+HAVE_NL_LANGINFO = @HAVE_NL_LANGINFO@
+HAVE_OPENAT = @HAVE_OPENAT@
+HAVE_OPENDIR = @HAVE_OPENDIR@
+HAVE_OS_H = @HAVE_OS_H@
+HAVE_PCLOSE = @HAVE_PCLOSE@
+HAVE_PIPE = @HAVE_PIPE@
+HAVE_PIPE2 = @HAVE_PIPE2@
+HAVE_POPEN = @HAVE_POPEN@
+HAVE_POSIX_OPENPT = @HAVE_POSIX_OPENPT@
+HAVE_POSIX_SIGNALBLOCKING = @HAVE_POSIX_SIGNALBLOCKING@
+HAVE_POWF = @HAVE_POWF@
+HAVE_PREAD = @HAVE_PREAD@
+HAVE_PSELECT = @HAVE_PSELECT@
+HAVE_PTHREAD_ATTR_DESTROY = @HAVE_PTHREAD_ATTR_DESTROY@
+HAVE_PTHREAD_ATTR_GETDETACHSTATE = @HAVE_PTHREAD_ATTR_GETDETACHSTATE@
+HAVE_PTHREAD_ATTR_INIT = @HAVE_PTHREAD_ATTR_INIT@
+HAVE_PTHREAD_ATTR_SETDETACHSTATE = @HAVE_PTHREAD_ATTR_SETDETACHSTATE@
+HAVE_PTHREAD_CONDATTR_DESTROY = @HAVE_PTHREAD_CONDATTR_DESTROY@
+HAVE_PTHREAD_CONDATTR_INIT = @HAVE_PTHREAD_CONDATTR_INIT@
+HAVE_PTHREAD_COND_BROADCAST = @HAVE_PTHREAD_COND_BROADCAST@
+HAVE_PTHREAD_COND_DESTROY = @HAVE_PTHREAD_COND_DESTROY@
+HAVE_PTHREAD_COND_INIT = @HAVE_PTHREAD_COND_INIT@
+HAVE_PTHREAD_COND_SIGNAL = @HAVE_PTHREAD_COND_SIGNAL@
+HAVE_PTHREAD_COND_TIMEDWAIT = @HAVE_PTHREAD_COND_TIMEDWAIT@
+HAVE_PTHREAD_COND_WAIT = @HAVE_PTHREAD_COND_WAIT@
+HAVE_PTHREAD_CREATE = @HAVE_PTHREAD_CREATE@
+HAVE_PTHREAD_CREATE_DETACHED = @HAVE_PTHREAD_CREATE_DETACHED@
+HAVE_PTHREAD_DETACH = @HAVE_PTHREAD_DETACH@
+HAVE_PTHREAD_EQUAL = @HAVE_PTHREAD_EQUAL@
+HAVE_PTHREAD_EXIT = @HAVE_PTHREAD_EXIT@
+HAVE_PTHREAD_GETSPECIFIC = @HAVE_PTHREAD_GETSPECIFIC@
+HAVE_PTHREAD_H = @HAVE_PTHREAD_H@
+HAVE_PTHREAD_JOIN = @HAVE_PTHREAD_JOIN@
+HAVE_PTHREAD_KEY_CREATE = @HAVE_PTHREAD_KEY_CREATE@
+HAVE_PTHREAD_KEY_DELETE = @HAVE_PTHREAD_KEY_DELETE@
+HAVE_PTHREAD_MUTEXATTR_DESTROY = @HAVE_PTHREAD_MUTEXATTR_DESTROY@
+HAVE_PTHREAD_MUTEXATTR_GETROBUST = @HAVE_PTHREAD_MUTEXATTR_GETROBUST@
+HAVE_PTHREAD_MUTEXATTR_GETTYPE = @HAVE_PTHREAD_MUTEXATTR_GETTYPE@
+HAVE_PTHREAD_MUTEXATTR_INIT = @HAVE_PTHREAD_MUTEXATTR_INIT@
+HAVE_PTHREAD_MUTEXATTR_SETROBUST = @HAVE_PTHREAD_MUTEXATTR_SETROBUST@
+HAVE_PTHREAD_MUTEXATTR_SETTYPE = @HAVE_PTHREAD_MUTEXATTR_SETTYPE@
+HAVE_PTHREAD_MUTEX_DESTROY = @HAVE_PTHREAD_MUTEX_DESTROY@
+HAVE_PTHREAD_MUTEX_INIT = @HAVE_PTHREAD_MUTEX_INIT@
+HAVE_PTHREAD_MUTEX_LOCK = @HAVE_PTHREAD_MUTEX_LOCK@
+HAVE_PTHREAD_MUTEX_RECURSIVE = @HAVE_PTHREAD_MUTEX_RECURSIVE@
+HAVE_PTHREAD_MUTEX_ROBUST = @HAVE_PTHREAD_MUTEX_ROBUST@
+HAVE_PTHREAD_MUTEX_TIMEDLOCK = @HAVE_PTHREAD_MUTEX_TIMEDLOCK@
+HAVE_PTHREAD_MUTEX_TRYLOCK = @HAVE_PTHREAD_MUTEX_TRYLOCK@
+HAVE_PTHREAD_MUTEX_UNLOCK = @HAVE_PTHREAD_MUTEX_UNLOCK@
+HAVE_PTHREAD_ONCE = @HAVE_PTHREAD_ONCE@
+HAVE_PTHREAD_PROCESS_SHARED = @HAVE_PTHREAD_PROCESS_SHARED@
+HAVE_PTHREAD_RWLOCKATTR_DESTROY = @HAVE_PTHREAD_RWLOCKATTR_DESTROY@
+HAVE_PTHREAD_RWLOCKATTR_INIT = @HAVE_PTHREAD_RWLOCKATTR_INIT@
+HAVE_PTHREAD_RWLOCK_DESTROY = @HAVE_PTHREAD_RWLOCK_DESTROY@
+HAVE_PTHREAD_RWLOCK_INIT = @HAVE_PTHREAD_RWLOCK_INIT@
+HAVE_PTHREAD_RWLOCK_RDLOCK = @HAVE_PTHREAD_RWLOCK_RDLOCK@
+HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK = @HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK = @HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+HAVE_PTHREAD_RWLOCK_TRYRDLOCK = @HAVE_PTHREAD_RWLOCK_TRYRDLOCK@
+HAVE_PTHREAD_RWLOCK_TRYWRLOCK = @HAVE_PTHREAD_RWLOCK_TRYWRLOCK@
+HAVE_PTHREAD_RWLOCK_UNLOCK = @HAVE_PTHREAD_RWLOCK_UNLOCK@
+HAVE_PTHREAD_RWLOCK_WRLOCK = @HAVE_PTHREAD_RWLOCK_WRLOCK@
+HAVE_PTHREAD_SELF = @HAVE_PTHREAD_SELF@
+HAVE_PTHREAD_SETSPECIFIC = @HAVE_PTHREAD_SETSPECIFIC@
+HAVE_PTHREAD_SIGMASK = @HAVE_PTHREAD_SIGMASK@
+HAVE_PTHREAD_SPINLOCK_T = @HAVE_PTHREAD_SPINLOCK_T@
+HAVE_PTHREAD_SPIN_DESTROY = @HAVE_PTHREAD_SPIN_DESTROY@
+HAVE_PTHREAD_SPIN_INIT = @HAVE_PTHREAD_SPIN_INIT@
+HAVE_PTHREAD_SPIN_LOCK = @HAVE_PTHREAD_SPIN_LOCK@
+HAVE_PTHREAD_SPIN_TRYLOCK = @HAVE_PTHREAD_SPIN_TRYLOCK@
+HAVE_PTHREAD_SPIN_UNLOCK = @HAVE_PTHREAD_SPIN_UNLOCK@
+HAVE_PTHREAD_T = @HAVE_PTHREAD_T@
+HAVE_PTSNAME = @HAVE_PTSNAME@
+HAVE_PTSNAME_R = @HAVE_PTSNAME_R@
+HAVE_PWRITE = @HAVE_PWRITE@
+HAVE_QSORT_R = @HAVE_QSORT_R@
+HAVE_RAISE = @HAVE_RAISE@
+HAVE_RANDOM = @HAVE_RANDOM@
+HAVE_RANDOM_H = @HAVE_RANDOM_H@
+HAVE_RANDOM_R = @HAVE_RANDOM_R@
+HAVE_RAWMEMCHR = @HAVE_RAWMEMCHR@
+HAVE_READDIR = @HAVE_READDIR@
+HAVE_READLINK = @HAVE_READLINK@
+HAVE_READLINKAT = @HAVE_READLINKAT@
+HAVE_REALLOCARRAY = @HAVE_REALLOCARRAY@
+HAVE_REALPATH = @HAVE_REALPATH@
+HAVE_REMAINDER = @HAVE_REMAINDER@
+HAVE_REMAINDERF = @HAVE_REMAINDERF@
+HAVE_RENAMEAT = @HAVE_RENAMEAT@
+HAVE_REWINDDIR = @HAVE_REWINDDIR@
+HAVE_RINT = @HAVE_RINT@
+HAVE_RINTL = @HAVE_RINTL@
+HAVE_RPMATCH = @HAVE_RPMATCH@
+HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = @HAVE_SAME_LONG_DOUBLE_AS_DOUBLE@
+HAVE_SA_FAMILY_T = @HAVE_SA_FAMILY_T@
+HAVE_SCANDIR = @HAVE_SCANDIR@
+HAVE_SCHED_H = @HAVE_SCHED_H@
+HAVE_SCHED_YIELD = @HAVE_SCHED_YIELD@
+HAVE_SECURE_GETENV = @HAVE_SECURE_GETENV@
+HAVE_SETENV = @HAVE_SETENV@
+HAVE_SETHOSTNAME = @HAVE_SETHOSTNAME@
+HAVE_SETSTATE = @HAVE_SETSTATE@
+HAVE_SIGACTION = @HAVE_SIGACTION@
+HAVE_SIGHANDLER_T = @HAVE_SIGHANDLER_T@
+HAVE_SIGINFO_T = @HAVE_SIGINFO_T@
+HAVE_SIGNED_SIG_ATOMIC_T = @HAVE_SIGNED_SIG_ATOMIC_T@
+HAVE_SIGNED_WCHAR_T = @HAVE_SIGNED_WCHAR_T@
+HAVE_SIGNED_WINT_T = @HAVE_SIGNED_WINT_T@
+HAVE_SIGSET_T = @HAVE_SIGSET_T@
+HAVE_SINF = @HAVE_SINF@
+HAVE_SINHF = @HAVE_SINHF@
+HAVE_SINL = @HAVE_SINL@
+HAVE_SLEEP = @HAVE_SLEEP@
+HAVE_SQRTF = @HAVE_SQRTF@
+HAVE_SQRTL = @HAVE_SQRTL@
+HAVE_STDINT_H = @HAVE_STDINT_H@
+HAVE_STPCPY = @HAVE_STPCPY@
+HAVE_STPNCPY = @HAVE_STPNCPY@
+HAVE_STRCASESTR = @HAVE_STRCASESTR@
+HAVE_STRCHRNUL = @HAVE_STRCHRNUL@
+HAVE_STRPBRK = @HAVE_STRPBRK@
+HAVE_STRPTIME = @HAVE_STRPTIME@
+HAVE_STRSEP = @HAVE_STRSEP@
+HAVE_STRTOD = @HAVE_STRTOD@
+HAVE_STRTOLD = @HAVE_STRTOLD@
+HAVE_STRTOLL = @HAVE_STRTOLL@
+HAVE_STRTOULL = @HAVE_STRTOULL@
+HAVE_STRUCT_ADDRINFO = @HAVE_STRUCT_ADDRINFO@
+HAVE_STRUCT_RANDOM_DATA = @HAVE_STRUCT_RANDOM_DATA@
+HAVE_STRUCT_SCHED_PARAM = @HAVE_STRUCT_SCHED_PARAM@
+HAVE_STRUCT_SIGACTION_SA_SIGACTION = @HAVE_STRUCT_SIGACTION_SA_SIGACTION@
+HAVE_STRUCT_SOCKADDR_STORAGE = @HAVE_STRUCT_SOCKADDR_STORAGE@
+HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = @HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY@
+HAVE_STRUCT_TIMEVAL = @HAVE_STRUCT_TIMEVAL@
+HAVE_STRUCT_UTSNAME = @HAVE_STRUCT_UTSNAME@
+HAVE_STRVERSCMP = @HAVE_STRVERSCMP@
+HAVE_SYMLINK = @HAVE_SYMLINK@
+HAVE_SYMLINKAT = @HAVE_SYMLINKAT@
+HAVE_SYS_BITYPES_H = @HAVE_SYS_BITYPES_H@
+HAVE_SYS_CDEFS_H = @HAVE_SYS_CDEFS_H@
+HAVE_SYS_INTTYPES_H = @HAVE_SYS_INTTYPES_H@
+HAVE_SYS_IOCTL_H = @HAVE_SYS_IOCTL_H@
+HAVE_SYS_LOADAVG_H = @HAVE_SYS_LOADAVG_H@
+HAVE_SYS_PARAM_H = @HAVE_SYS_PARAM_H@
+HAVE_SYS_RESOURCE_H = @HAVE_SYS_RESOURCE_H@
+HAVE_SYS_SELECT_H = @HAVE_SYS_SELECT_H@
+HAVE_SYS_SOCKET_H = @HAVE_SYS_SOCKET_H@
+HAVE_SYS_TIME_H = @HAVE_SYS_TIME_H@
+HAVE_SYS_TYPES_H = @HAVE_SYS_TYPES_H@
+HAVE_SYS_UIO_H = @HAVE_SYS_UIO_H@
+HAVE_SYS_UTSNAME_H = @HAVE_SYS_UTSNAME_H@
+HAVE_TANF = @HAVE_TANF@
+HAVE_TANHF = @HAVE_TANHF@
+HAVE_TANL = @HAVE_TANL@
+HAVE_TERMIOS_H = @HAVE_TERMIOS_H@
+HAVE_TIMEGM = @HAVE_TIMEGM@
+HAVE_TIMEZONE_T = @HAVE_TIMEZONE_T@
+HAVE_TYPE_VOLATILE_SIG_ATOMIC_T = @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
+HAVE_TZSET = @HAVE_TZSET@
+HAVE_UNAME = @HAVE_UNAME@
+HAVE_UNISTD_H = @HAVE_UNISTD_H@
+HAVE_UNLINKAT = @HAVE_UNLINKAT@
+HAVE_UNLOCKPT = @HAVE_UNLOCKPT@
+HAVE_USLEEP = @HAVE_USLEEP@
+HAVE_UTIME = @HAVE_UTIME@
+HAVE_UTIMENSAT = @HAVE_UTIMENSAT@
+HAVE_UTIME_H = @HAVE_UTIME_H@
+HAVE_VASPRINTF = @HAVE_VASPRINTF@
+HAVE_VDPRINTF = @HAVE_VDPRINTF@
+HAVE_VISIBILITY = @HAVE_VISIBILITY@
+HAVE_WCHAR_H = @HAVE_WCHAR_H@
+HAVE_WCHAR_T = @HAVE_WCHAR_T@
+HAVE_WCPCPY = @HAVE_WCPCPY@
+HAVE_WCPNCPY = @HAVE_WCPNCPY@
+HAVE_WCRTOMB = @HAVE_WCRTOMB@
+HAVE_WCSCASECMP = @HAVE_WCSCASECMP@
+HAVE_WCSCAT = @HAVE_WCSCAT@
+HAVE_WCSCHR = @HAVE_WCSCHR@
+HAVE_WCSCMP = @HAVE_WCSCMP@
+HAVE_WCSCOLL = @HAVE_WCSCOLL@
+HAVE_WCSCPY = @HAVE_WCSCPY@
+HAVE_WCSCSPN = @HAVE_WCSCSPN@
+HAVE_WCSDUP = @HAVE_WCSDUP@
+HAVE_WCSFTIME = @HAVE_WCSFTIME@
+HAVE_WCSLEN = @HAVE_WCSLEN@
+HAVE_WCSNCASECMP = @HAVE_WCSNCASECMP@
+HAVE_WCSNCAT = @HAVE_WCSNCAT@
+HAVE_WCSNCMP = @HAVE_WCSNCMP@
+HAVE_WCSNCPY = @HAVE_WCSNCPY@
+HAVE_WCSNLEN = @HAVE_WCSNLEN@
+HAVE_WCSNRTOMBS = @HAVE_WCSNRTOMBS@
+HAVE_WCSPBRK = @HAVE_WCSPBRK@
+HAVE_WCSRCHR = @HAVE_WCSRCHR@
+HAVE_WCSRTOMBS = @HAVE_WCSRTOMBS@
+HAVE_WCSSPN = @HAVE_WCSSPN@
+HAVE_WCSSTR = @HAVE_WCSSTR@
+HAVE_WCSTOK = @HAVE_WCSTOK@
+HAVE_WCSWIDTH = @HAVE_WCSWIDTH@
+HAVE_WCSXFRM = @HAVE_WCSXFRM@
+HAVE_WCTRANS_T = @HAVE_WCTRANS_T@
+HAVE_WCTYPE_H = @HAVE_WCTYPE_H@
+HAVE_WCTYPE_T = @HAVE_WCTYPE_T@
+HAVE_WINSOCK2_H = @HAVE_WINSOCK2_H@
+HAVE_WINT_T = @HAVE_WINT_T@
+HAVE_WMEMCHR = @HAVE_WMEMCHR@
+HAVE_WMEMCMP = @HAVE_WMEMCMP@
+HAVE_WMEMCPY = @HAVE_WMEMCPY@
+HAVE_WMEMMOVE = @HAVE_WMEMMOVE@
+HAVE_WMEMSET = @HAVE_WMEMSET@
+HAVE_WS2TCPIP_H = @HAVE_WS2TCPIP_H@
+HAVE_XLOCALE_H = @HAVE_XLOCALE_H@
+HAVE__BOOL = @HAVE__BOOL@
+HAVE__EXIT = @HAVE__EXIT@
+HELP2MAN = @HELP2MAN@
+HOSTENT_LIB = @HOSTENT_LIB@
+ICONV_CONST = @ICONV_CONST@
+ICONV_H = @ICONV_H@
+IGNORE_UNUSED_LIBRARIES_CFLAGS = @IGNORE_UNUSED_LIBRARIES_CFLAGS@
+INCLUDE_NEXT = @INCLUDE_NEXT@
+INCLUDE_NEXT_AS_FIRST_DIRECTIVE = @INCLUDE_NEXT_AS_FIRST_DIRECTIVE@
+INET_NTOP_LIB = @INET_NTOP_LIB@
+INET_PTON_LIB = @INET_PTON_LIB@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INT32_MAX_LT_INTMAX_MAX = @INT32_MAX_LT_INTMAX_MAX@
+INT64_MAX_EQ_LONG_MAX = @INT64_MAX_EQ_LONG_MAX@
+INTLLIBS = @INTLLIBS@
+INTL_MACOSX_LIBS = @INTL_MACOSX_LIBS@
+LDFLAGS = @LDFLAGS@
+LIBCOREUTILS_LIBDEPS = @LIBCOREUTILS_LIBDEPS@
+LIBCOREUTILS_LTLIBDEPS = @LIBCOREUTILS_LTLIBDEPS@
+LIBICONV = @LIBICONV@
+LIBINTL = @LIBINTL@
+LIBMULTITHREAD = @LIBMULTITHREAD@
+LIBOBJS = @LIBOBJS@
+LIBPMULTITHREAD = @LIBPMULTITHREAD@
+LIBPTHREAD = @LIBPTHREAD@
+LIBS = @LIBS@
+LIBSOCKET = @LIBSOCKET@
+LIBSTDTHREAD = @LIBSTDTHREAD@
+LIBTESTS_LIBDEPS = @LIBTESTS_LIBDEPS@
+LIBTHREAD = @LIBTHREAD@
+LIBUNISTRING_UNISTR_H = @LIBUNISTRING_UNISTR_H@
+LIBUNISTRING_UNITYPES_H = @LIBUNISTRING_UNITYPES_H@
+LIBUNISTRING_UNIWIDTH_H = @LIBUNISTRING_UNIWIDTH_H@
+LIB_ACL = @LIB_ACL@
+LIB_CAP = @LIB_CAP@
+LIB_CLOCK_GETTIME = @LIB_CLOCK_GETTIME@
+LIB_CRYPTO = @LIB_CRYPTO@
+LIB_EACCESS = @LIB_EACCESS@
+LIB_FDATASYNC = @LIB_FDATASYNC@
+LIB_GETHRXTIME = @LIB_GETHRXTIME@
+LIB_GETLOGIN = @LIB_GETLOGIN@
+LIB_GMP = @LIB_GMP@
+LIB_HARD_LOCALE = @LIB_HARD_LOCALE@
+LIB_HAS_ACL = @LIB_HAS_ACL@
+LIB_MBRTOWC = @LIB_MBRTOWC@
+LIB_NANOSLEEP = @LIB_NANOSLEEP@
+LIB_NL_LANGINFO = @LIB_NL_LANGINFO@
+LIB_NVPAIR = @LIB_NVPAIR@
+LIB_PTHREAD = @LIB_PTHREAD@
+LIB_PTHREAD_SIGMASK = @LIB_PTHREAD_SIGMASK@
+LIB_SCHED_YIELD = @LIB_SCHED_YIELD@
+LIB_SELECT = @LIB_SELECT@
+LIB_SELINUX = @LIB_SELINUX@
+LIB_SEMAPHORE = @LIB_SEMAPHORE@
+LIB_SETLOCALE = @LIB_SETLOCALE@
+LIB_SETLOCALE_NULL = @LIB_SETLOCALE_NULL@
+LIB_SMACK = @LIB_SMACK@
+LIB_TIMER_TIME = @LIB_TIMER_TIME@
+LIB_XATTR = @LIB_XATTR@
+LIMITS_H = @LIMITS_H@
+LN_S = @LN_S@
+LOCALCHARSET_TESTS_ENVIRONMENT = @LOCALCHARSET_TESTS_ENVIRONMENT@
+LOCALE_FR = @LOCALE_FR@
+LOCALE_FR_UTF8 = @LOCALE_FR_UTF8@
+LOCALE_JA = @LOCALE_JA@
+LOCALE_TR_UTF8 = @LOCALE_TR_UTF8@
+LOCALE_ZH_CN = @LOCALE_ZH_CN@
+LTLIBICONV = @LTLIBICONV@
+LTLIBINTL = @LTLIBINTL@
+LTLIBMULTITHREAD = @LTLIBMULTITHREAD@
+LTLIBOBJS = @LTLIBOBJS@
+LTLIBTHREAD = @LTLIBTHREAD@
+MAKEINFO = @MAKEINFO@
+MAN = @MAN@
+MKDIR_P = @MKDIR_P@
+MSGFMT = @MSGFMT@
+MSGFMT_015 = @MSGFMT_015@
+MSGMERGE = @MSGMERGE@
+NETINET_IN_H = @NETINET_IN_H@
+NEXT_ARPA_INET_H = @NEXT_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H = @NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_CTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_CTYPE_H@
+NEXT_AS_FIRST_DIRECTIVE_DIRENT_H = @NEXT_AS_FIRST_DIRECTIVE_DIRENT_H@
+NEXT_AS_FIRST_DIRECTIVE_ERRNO_H = @NEXT_AS_FIRST_DIRECTIVE_ERRNO_H@
+NEXT_AS_FIRST_DIRECTIVE_FCNTL_H = @NEXT_AS_FIRST_DIRECTIVE_FCNTL_H@
+NEXT_AS_FIRST_DIRECTIVE_FLOAT_H = @NEXT_AS_FIRST_DIRECTIVE_FLOAT_H@
+NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H = @NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H@
+NEXT_AS_FIRST_DIRECTIVE_GETOPT_H = @NEXT_AS_FIRST_DIRECTIVE_GETOPT_H@
+NEXT_AS_FIRST_DIRECTIVE_ICONV_H = @NEXT_AS_FIRST_DIRECTIVE_ICONV_H@
+NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H = @NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H = @NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H@
+NEXT_AS_FIRST_DIRECTIVE_LIMITS_H = @NEXT_AS_FIRST_DIRECTIVE_LIMITS_H@
+NEXT_AS_FIRST_DIRECTIVE_LOCALE_H = @NEXT_AS_FIRST_DIRECTIVE_LOCALE_H@
+NEXT_AS_FIRST_DIRECTIVE_MATH_H = @NEXT_AS_FIRST_DIRECTIVE_MATH_H@
+NEXT_AS_FIRST_DIRECTIVE_NETDB_H = @NEXT_AS_FIRST_DIRECTIVE_NETDB_H@
+NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H = @NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H@
+NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H = @NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H@
+NEXT_AS_FIRST_DIRECTIVE_SCHED_H = @NEXT_AS_FIRST_DIRECTIVE_SCHED_H@
+NEXT_AS_FIRST_DIRECTIVE_SELINUX_SELINUX_H = @NEXT_AS_FIRST_DIRECTIVE_SELINUX_SELINUX_H@
+NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H = @NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H@
+NEXT_AS_FIRST_DIRECTIVE_STDARG_H = @NEXT_AS_FIRST_DIRECTIVE_STDARG_H@
+NEXT_AS_FIRST_DIRECTIVE_STDDEF_H = @NEXT_AS_FIRST_DIRECTIVE_STDDEF_H@
+NEXT_AS_FIRST_DIRECTIVE_STDINT_H = @NEXT_AS_FIRST_DIRECTIVE_STDINT_H@
+NEXT_AS_FIRST_DIRECTIVE_STDIO_H = @NEXT_AS_FIRST_DIRECTIVE_STDIO_H@
+NEXT_AS_FIRST_DIRECTIVE_STDLIB_H = @NEXT_AS_FIRST_DIRECTIVE_STDLIB_H@
+NEXT_AS_FIRST_DIRECTIVE_STRING_H = @NEXT_AS_FIRST_DIRECTIVE_STRING_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_RESOURCE_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_RESOURCE_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_UTSNAME_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_UTSNAME_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_WAIT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_WAIT_H@
+NEXT_AS_FIRST_DIRECTIVE_TERMIOS_H = @NEXT_AS_FIRST_DIRECTIVE_TERMIOS_H@
+NEXT_AS_FIRST_DIRECTIVE_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_UNISTD_H = @NEXT_AS_FIRST_DIRECTIVE_UNISTD_H@
+NEXT_AS_FIRST_DIRECTIVE_UTIME_H = @NEXT_AS_FIRST_DIRECTIVE_UTIME_H@
+NEXT_AS_FIRST_DIRECTIVE_WCHAR_H = @NEXT_AS_FIRST_DIRECTIVE_WCHAR_H@
+NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H@
+NEXT_CTYPE_H = @NEXT_CTYPE_H@
+NEXT_DIRENT_H = @NEXT_DIRENT_H@
+NEXT_ERRNO_H = @NEXT_ERRNO_H@
+NEXT_FCNTL_H = @NEXT_FCNTL_H@
+NEXT_FLOAT_H = @NEXT_FLOAT_H@
+NEXT_FNMATCH_H = @NEXT_FNMATCH_H@
+NEXT_GETOPT_H = @NEXT_GETOPT_H@
+NEXT_ICONV_H = @NEXT_ICONV_H@
+NEXT_INTTYPES_H = @NEXT_INTTYPES_H@
+NEXT_LANGINFO_H = @NEXT_LANGINFO_H@
+NEXT_LIMITS_H = @NEXT_LIMITS_H@
+NEXT_LOCALE_H = @NEXT_LOCALE_H@
+NEXT_MATH_H = @NEXT_MATH_H@
+NEXT_NETDB_H = @NEXT_NETDB_H@
+NEXT_NETINET_IN_H = @NEXT_NETINET_IN_H@
+NEXT_PTHREAD_H = @NEXT_PTHREAD_H@
+NEXT_SCHED_H = @NEXT_SCHED_H@
+NEXT_SELINUX_SELINUX_H = @NEXT_SELINUX_SELINUX_H@
+NEXT_SIGNAL_H = @NEXT_SIGNAL_H@
+NEXT_STDARG_H = @NEXT_STDARG_H@
+NEXT_STDDEF_H = @NEXT_STDDEF_H@
+NEXT_STDINT_H = @NEXT_STDINT_H@
+NEXT_STDIO_H = @NEXT_STDIO_H@
+NEXT_STDLIB_H = @NEXT_STDLIB_H@
+NEXT_STRING_H = @NEXT_STRING_H@
+NEXT_SYS_IOCTL_H = @NEXT_SYS_IOCTL_H@
+NEXT_SYS_RESOURCE_H = @NEXT_SYS_RESOURCE_H@
+NEXT_SYS_SELECT_H = @NEXT_SYS_SELECT_H@
+NEXT_SYS_SOCKET_H = @NEXT_SYS_SOCKET_H@
+NEXT_SYS_STAT_H = @NEXT_SYS_STAT_H@
+NEXT_SYS_TIME_H = @NEXT_SYS_TIME_H@
+NEXT_SYS_TYPES_H = @NEXT_SYS_TYPES_H@
+NEXT_SYS_UIO_H = @NEXT_SYS_UIO_H@
+NEXT_SYS_UTSNAME_H = @NEXT_SYS_UTSNAME_H@
+NEXT_SYS_WAIT_H = @NEXT_SYS_WAIT_H@
+NEXT_TERMIOS_H = @NEXT_TERMIOS_H@
+NEXT_TIME_H = @NEXT_TIME_H@
+NEXT_UNISTD_H = @NEXT_UNISTD_H@
+NEXT_UTIME_H = @NEXT_UTIME_H@
+NEXT_WCHAR_H = @NEXT_WCHAR_H@
+NEXT_WCTYPE_H = @NEXT_WCTYPE_H@
+OBJEXT = @OBJEXT@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PARSE_DATETIME_BISON = @PARSE_DATETIME_BISON@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PERL = @PERL@
+POSIX_SHELL = @POSIX_SHELL@
+POSUB = @POSUB@
+PRAGMA_COLUMNS = @PRAGMA_COLUMNS@
+PRAGMA_SYSTEM_HEADER = @PRAGMA_SYSTEM_HEADER@
+PREFERABLY_POSIX_SHELL = @PREFERABLY_POSIX_SHELL@
+PRIPTR_PREFIX = @PRIPTR_PREFIX@
+PRI_MACROS_BROKEN = @PRI_MACROS_BROKEN@
+PTHREAD_H_DEFINES_STRUCT_TIMESPEC = @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
+PTRDIFF_T_SUFFIX = @PTRDIFF_T_SUFFIX@
+RANLIB = @RANLIB@
+REPLACE_ACCESS = @REPLACE_ACCESS@
+REPLACE_ACOSF = @REPLACE_ACOSF@
+REPLACE_ASINF = @REPLACE_ASINF@
+REPLACE_ATAN2F = @REPLACE_ATAN2F@
+REPLACE_ATANF = @REPLACE_ATANF@
+REPLACE_BTOWC = @REPLACE_BTOWC@
+REPLACE_CALLOC = @REPLACE_CALLOC@
+REPLACE_CANONICALIZE_FILE_NAME = @REPLACE_CANONICALIZE_FILE_NAME@
+REPLACE_CBRTF = @REPLACE_CBRTF@
+REPLACE_CBRTL = @REPLACE_CBRTL@
+REPLACE_CEIL = @REPLACE_CEIL@
+REPLACE_CEILF = @REPLACE_CEILF@
+REPLACE_CEILL = @REPLACE_CEILL@
+REPLACE_CHOWN = @REPLACE_CHOWN@
+REPLACE_CLOSE = @REPLACE_CLOSE@
+REPLACE_CLOSEDIR = @REPLACE_CLOSEDIR@
+REPLACE_COSF = @REPLACE_COSF@
+REPLACE_COSHF = @REPLACE_COSHF@
+REPLACE_CREAT = @REPLACE_CREAT@
+REPLACE_CTIME = @REPLACE_CTIME@
+REPLACE_DIRFD = @REPLACE_DIRFD@
+REPLACE_DPRINTF = @REPLACE_DPRINTF@
+REPLACE_DUP = @REPLACE_DUP@
+REPLACE_DUP2 = @REPLACE_DUP2@
+REPLACE_DUPLOCALE = @REPLACE_DUPLOCALE@
+REPLACE_EXP2 = @REPLACE_EXP2@
+REPLACE_EXP2L = @REPLACE_EXP2L@
+REPLACE_EXPF = @REPLACE_EXPF@
+REPLACE_EXPL = @REPLACE_EXPL@
+REPLACE_EXPM1 = @REPLACE_EXPM1@
+REPLACE_EXPM1F = @REPLACE_EXPM1F@
+REPLACE_EXPM1L = @REPLACE_EXPM1L@
+REPLACE_FABSL = @REPLACE_FABSL@
+REPLACE_FACCESSAT = @REPLACE_FACCESSAT@
+REPLACE_FCHMODAT = @REPLACE_FCHMODAT@
+REPLACE_FCHOWNAT = @REPLACE_FCHOWNAT@
+REPLACE_FCLOSE = @REPLACE_FCLOSE@
+REPLACE_FCNTL = @REPLACE_FCNTL@
+REPLACE_FDOPEN = @REPLACE_FDOPEN@
+REPLACE_FDOPENDIR = @REPLACE_FDOPENDIR@
+REPLACE_FFLUSH = @REPLACE_FFLUSH@
+REPLACE_FLOOR = @REPLACE_FLOOR@
+REPLACE_FLOORF = @REPLACE_FLOORF@
+REPLACE_FLOORL = @REPLACE_FLOORL@
+REPLACE_FMA = @REPLACE_FMA@
+REPLACE_FMAF = @REPLACE_FMAF@
+REPLACE_FMAL = @REPLACE_FMAL@
+REPLACE_FMOD = @REPLACE_FMOD@
+REPLACE_FMODF = @REPLACE_FMODF@
+REPLACE_FMODL = @REPLACE_FMODL@
+REPLACE_FNMATCH = @REPLACE_FNMATCH@
+REPLACE_FOPEN = @REPLACE_FOPEN@
+REPLACE_FPRINTF = @REPLACE_FPRINTF@
+REPLACE_FPURGE = @REPLACE_FPURGE@
+REPLACE_FREELOCALE = @REPLACE_FREELOCALE@
+REPLACE_FREOPEN = @REPLACE_FREOPEN@
+REPLACE_FREXP = @REPLACE_FREXP@
+REPLACE_FREXPF = @REPLACE_FREXPF@
+REPLACE_FREXPL = @REPLACE_FREXPL@
+REPLACE_FSEEK = @REPLACE_FSEEK@
+REPLACE_FSEEKO = @REPLACE_FSEEKO@
+REPLACE_FSTAT = @REPLACE_FSTAT@
+REPLACE_FSTATAT = @REPLACE_FSTATAT@
+REPLACE_FTELL = @REPLACE_FTELL@
+REPLACE_FTELLO = @REPLACE_FTELLO@
+REPLACE_FTRUNCATE = @REPLACE_FTRUNCATE@
+REPLACE_FUTIMENS = @REPLACE_FUTIMENS@
+REPLACE_GAI_STRERROR = @REPLACE_GAI_STRERROR@
+REPLACE_GETADDRINFO = @REPLACE_GETADDRINFO@
+REPLACE_GETCWD = @REPLACE_GETCWD@
+REPLACE_GETDELIM = @REPLACE_GETDELIM@
+REPLACE_GETDOMAINNAME = @REPLACE_GETDOMAINNAME@
+REPLACE_GETDTABLESIZE = @REPLACE_GETDTABLESIZE@
+REPLACE_GETGROUPS = @REPLACE_GETGROUPS@
+REPLACE_GETLINE = @REPLACE_GETLINE@
+REPLACE_GETLOGIN_R = @REPLACE_GETLOGIN_R@
+REPLACE_GETPAGESIZE = @REPLACE_GETPAGESIZE@
+REPLACE_GETPASS = @REPLACE_GETPASS@
+REPLACE_GETTIMEOFDAY = @REPLACE_GETTIMEOFDAY@
+REPLACE_GMTIME = @REPLACE_GMTIME@
+REPLACE_HUGE_VAL = @REPLACE_HUGE_VAL@
+REPLACE_HYPOT = @REPLACE_HYPOT@
+REPLACE_HYPOTF = @REPLACE_HYPOTF@
+REPLACE_HYPOTL = @REPLACE_HYPOTL@
+REPLACE_ICONV = @REPLACE_ICONV@
+REPLACE_ICONV_OPEN = @REPLACE_ICONV_OPEN@
+REPLACE_ICONV_UTF = @REPLACE_ICONV_UTF@
+REPLACE_ILOGB = @REPLACE_ILOGB@
+REPLACE_ILOGBF = @REPLACE_ILOGBF@
+REPLACE_ILOGBL = @REPLACE_ILOGBL@
+REPLACE_INET_NTOP = @REPLACE_INET_NTOP@
+REPLACE_INET_PTON = @REPLACE_INET_PTON@
+REPLACE_INITSTATE = @REPLACE_INITSTATE@
+REPLACE_IOCTL = @REPLACE_IOCTL@
+REPLACE_ISATTY = @REPLACE_ISATTY@
+REPLACE_ISFINITE = @REPLACE_ISFINITE@
+REPLACE_ISINF = @REPLACE_ISINF@
+REPLACE_ISNAN = @REPLACE_ISNAN@
+REPLACE_ISWBLANK = @REPLACE_ISWBLANK@
+REPLACE_ISWCNTRL = @REPLACE_ISWCNTRL@
+REPLACE_ISWDIGIT = @REPLACE_ISWDIGIT@
+REPLACE_ISWXDIGIT = @REPLACE_ISWXDIGIT@
+REPLACE_ITOLD = @REPLACE_ITOLD@
+REPLACE_LCHOWN = @REPLACE_LCHOWN@
+REPLACE_LDEXPL = @REPLACE_LDEXPL@
+REPLACE_LINK = @REPLACE_LINK@
+REPLACE_LINKAT = @REPLACE_LINKAT@
+REPLACE_LOCALECONV = @REPLACE_LOCALECONV@
+REPLACE_LOCALTIME = @REPLACE_LOCALTIME@
+REPLACE_LOCALTIME_R = @REPLACE_LOCALTIME_R@
+REPLACE_LOG = @REPLACE_LOG@
+REPLACE_LOG10 = @REPLACE_LOG10@
+REPLACE_LOG10F = @REPLACE_LOG10F@
+REPLACE_LOG10L = @REPLACE_LOG10L@
+REPLACE_LOG1P = @REPLACE_LOG1P@
+REPLACE_LOG1PF = @REPLACE_LOG1PF@
+REPLACE_LOG1PL = @REPLACE_LOG1PL@
+REPLACE_LOG2 = @REPLACE_LOG2@
+REPLACE_LOG2F = @REPLACE_LOG2F@
+REPLACE_LOG2L = @REPLACE_LOG2L@
+REPLACE_LOGB = @REPLACE_LOGB@
+REPLACE_LOGBF = @REPLACE_LOGBF@
+REPLACE_LOGBL = @REPLACE_LOGBL@
+REPLACE_LOGF = @REPLACE_LOGF@
+REPLACE_LOGL = @REPLACE_LOGL@
+REPLACE_LSEEK = @REPLACE_LSEEK@
+REPLACE_LSTAT = @REPLACE_LSTAT@
+REPLACE_MALLOC = @REPLACE_MALLOC@
+REPLACE_MBRLEN = @REPLACE_MBRLEN@
+REPLACE_MBRTOWC = @REPLACE_MBRTOWC@
+REPLACE_MBSINIT = @REPLACE_MBSINIT@
+REPLACE_MBSNRTOWCS = @REPLACE_MBSNRTOWCS@
+REPLACE_MBSRTOWCS = @REPLACE_MBSRTOWCS@
+REPLACE_MBSTATE_T = @REPLACE_MBSTATE_T@
+REPLACE_MBTOWC = @REPLACE_MBTOWC@
+REPLACE_MEMCHR = @REPLACE_MEMCHR@
+REPLACE_MEMMEM = @REPLACE_MEMMEM@
+REPLACE_MKDIR = @REPLACE_MKDIR@
+REPLACE_MKFIFO = @REPLACE_MKFIFO@
+REPLACE_MKNOD = @REPLACE_MKNOD@
+REPLACE_MKSTEMP = @REPLACE_MKSTEMP@
+REPLACE_MKTIME = @REPLACE_MKTIME@
+REPLACE_MODF = @REPLACE_MODF@
+REPLACE_MODFF = @REPLACE_MODFF@
+REPLACE_MODFL = @REPLACE_MODFL@
+REPLACE_NAN = @REPLACE_NAN@
+REPLACE_NANOSLEEP = @REPLACE_NANOSLEEP@
+REPLACE_NEWLOCALE = @REPLACE_NEWLOCALE@
+REPLACE_NL_LANGINFO = @REPLACE_NL_LANGINFO@
+REPLACE_NULL = @REPLACE_NULL@
+REPLACE_OBSTACK_PRINTF = @REPLACE_OBSTACK_PRINTF@
+REPLACE_OPEN = @REPLACE_OPEN@
+REPLACE_OPENAT = @REPLACE_OPENAT@
+REPLACE_OPENDIR = @REPLACE_OPENDIR@
+REPLACE_PERROR = @REPLACE_PERROR@
+REPLACE_POPEN = @REPLACE_POPEN@
+REPLACE_PREAD = @REPLACE_PREAD@
+REPLACE_PRINTF = @REPLACE_PRINTF@
+REPLACE_PSELECT = @REPLACE_PSELECT@
+REPLACE_PTHREAD_ATTR_DESTROY = @REPLACE_PTHREAD_ATTR_DESTROY@
+REPLACE_PTHREAD_ATTR_GETDETACHSTATE = @REPLACE_PTHREAD_ATTR_GETDETACHSTATE@
+REPLACE_PTHREAD_ATTR_INIT = @REPLACE_PTHREAD_ATTR_INIT@
+REPLACE_PTHREAD_ATTR_SETDETACHSTATE = @REPLACE_PTHREAD_ATTR_SETDETACHSTATE@
+REPLACE_PTHREAD_CONDATTR_DESTROY = @REPLACE_PTHREAD_CONDATTR_DESTROY@
+REPLACE_PTHREAD_CONDATTR_INIT = @REPLACE_PTHREAD_CONDATTR_INIT@
+REPLACE_PTHREAD_COND_BROADCAST = @REPLACE_PTHREAD_COND_BROADCAST@
+REPLACE_PTHREAD_COND_DESTROY = @REPLACE_PTHREAD_COND_DESTROY@
+REPLACE_PTHREAD_COND_INIT = @REPLACE_PTHREAD_COND_INIT@
+REPLACE_PTHREAD_COND_SIGNAL = @REPLACE_PTHREAD_COND_SIGNAL@
+REPLACE_PTHREAD_COND_TIMEDWAIT = @REPLACE_PTHREAD_COND_TIMEDWAIT@
+REPLACE_PTHREAD_COND_WAIT = @REPLACE_PTHREAD_COND_WAIT@
+REPLACE_PTHREAD_CREATE = @REPLACE_PTHREAD_CREATE@
+REPLACE_PTHREAD_DETACH = @REPLACE_PTHREAD_DETACH@
+REPLACE_PTHREAD_EQUAL = @REPLACE_PTHREAD_EQUAL@
+REPLACE_PTHREAD_EXIT = @REPLACE_PTHREAD_EXIT@
+REPLACE_PTHREAD_GETSPECIFIC = @REPLACE_PTHREAD_GETSPECIFIC@
+REPLACE_PTHREAD_JOIN = @REPLACE_PTHREAD_JOIN@
+REPLACE_PTHREAD_KEY_CREATE = @REPLACE_PTHREAD_KEY_CREATE@
+REPLACE_PTHREAD_KEY_DELETE = @REPLACE_PTHREAD_KEY_DELETE@
+REPLACE_PTHREAD_MUTEXATTR_DESTROY = @REPLACE_PTHREAD_MUTEXATTR_DESTROY@
+REPLACE_PTHREAD_MUTEXATTR_GETROBUST = @REPLACE_PTHREAD_MUTEXATTR_GETROBUST@
+REPLACE_PTHREAD_MUTEXATTR_GETTYPE = @REPLACE_PTHREAD_MUTEXATTR_GETTYPE@
+REPLACE_PTHREAD_MUTEXATTR_INIT = @REPLACE_PTHREAD_MUTEXATTR_INIT@
+REPLACE_PTHREAD_MUTEXATTR_SETROBUST = @REPLACE_PTHREAD_MUTEXATTR_SETROBUST@
+REPLACE_PTHREAD_MUTEXATTR_SETTYPE = @REPLACE_PTHREAD_MUTEXATTR_SETTYPE@
+REPLACE_PTHREAD_MUTEX_DESTROY = @REPLACE_PTHREAD_MUTEX_DESTROY@
+REPLACE_PTHREAD_MUTEX_INIT = @REPLACE_PTHREAD_MUTEX_INIT@
+REPLACE_PTHREAD_MUTEX_LOCK = @REPLACE_PTHREAD_MUTEX_LOCK@
+REPLACE_PTHREAD_MUTEX_TIMEDLOCK = @REPLACE_PTHREAD_MUTEX_TIMEDLOCK@
+REPLACE_PTHREAD_MUTEX_TRYLOCK = @REPLACE_PTHREAD_MUTEX_TRYLOCK@
+REPLACE_PTHREAD_MUTEX_UNLOCK = @REPLACE_PTHREAD_MUTEX_UNLOCK@
+REPLACE_PTHREAD_ONCE = @REPLACE_PTHREAD_ONCE@
+REPLACE_PTHREAD_RWLOCKATTR_DESTROY = @REPLACE_PTHREAD_RWLOCKATTR_DESTROY@
+REPLACE_PTHREAD_RWLOCKATTR_INIT = @REPLACE_PTHREAD_RWLOCKATTR_INIT@
+REPLACE_PTHREAD_RWLOCK_DESTROY = @REPLACE_PTHREAD_RWLOCK_DESTROY@
+REPLACE_PTHREAD_RWLOCK_INIT = @REPLACE_PTHREAD_RWLOCK_INIT@
+REPLACE_PTHREAD_RWLOCK_RDLOCK = @REPLACE_PTHREAD_RWLOCK_RDLOCK@
+REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK = @REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK = @REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+REPLACE_PTHREAD_RWLOCK_TRYRDLOCK = @REPLACE_PTHREAD_RWLOCK_TRYRDLOCK@
+REPLACE_PTHREAD_RWLOCK_TRYWRLOCK = @REPLACE_PTHREAD_RWLOCK_TRYWRLOCK@
+REPLACE_PTHREAD_RWLOCK_UNLOCK = @REPLACE_PTHREAD_RWLOCK_UNLOCK@
+REPLACE_PTHREAD_RWLOCK_WRLOCK = @REPLACE_PTHREAD_RWLOCK_WRLOCK@
+REPLACE_PTHREAD_SELF = @REPLACE_PTHREAD_SELF@
+REPLACE_PTHREAD_SETSPECIFIC = @REPLACE_PTHREAD_SETSPECIFIC@
+REPLACE_PTHREAD_SIGMASK = @REPLACE_PTHREAD_SIGMASK@
+REPLACE_PTHREAD_SPIN_DESTROY = @REPLACE_PTHREAD_SPIN_DESTROY@
+REPLACE_PTHREAD_SPIN_INIT = @REPLACE_PTHREAD_SPIN_INIT@
+REPLACE_PTHREAD_SPIN_LOCK = @REPLACE_PTHREAD_SPIN_LOCK@
+REPLACE_PTHREAD_SPIN_TRYLOCK = @REPLACE_PTHREAD_SPIN_TRYLOCK@
+REPLACE_PTHREAD_SPIN_UNLOCK = @REPLACE_PTHREAD_SPIN_UNLOCK@
+REPLACE_PTSNAME = @REPLACE_PTSNAME@
+REPLACE_PTSNAME_R = @REPLACE_PTSNAME_R@
+REPLACE_PUTENV = @REPLACE_PUTENV@
+REPLACE_PWRITE = @REPLACE_PWRITE@
+REPLACE_QSORT_R = @REPLACE_QSORT_R@
+REPLACE_RAISE = @REPLACE_RAISE@
+REPLACE_RANDOM = @REPLACE_RANDOM@
+REPLACE_RANDOM_R = @REPLACE_RANDOM_R@
+REPLACE_READ = @REPLACE_READ@
+REPLACE_READLINK = @REPLACE_READLINK@
+REPLACE_READLINKAT = @REPLACE_READLINKAT@
+REPLACE_REALLOC = @REPLACE_REALLOC@
+REPLACE_REALPATH = @REPLACE_REALPATH@
+REPLACE_REMAINDER = @REPLACE_REMAINDER@
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+REPLACE_SETSTATE = @REPLACE_SETSTATE@
+REPLACE_SIGNBIT = @REPLACE_SIGNBIT@
+REPLACE_SIGNBIT_USING_GCC = @REPLACE_SIGNBIT_USING_GCC@
+REPLACE_SINF = @REPLACE_SINF@
+REPLACE_SINHF = @REPLACE_SINHF@
+REPLACE_SLEEP = @REPLACE_SLEEP@
+REPLACE_SNPRINTF = @REPLACE_SNPRINTF@
+REPLACE_SPRINTF = @REPLACE_SPRINTF@
+REPLACE_SQRTF = @REPLACE_SQRTF@
+REPLACE_SQRTL = @REPLACE_SQRTL@
+REPLACE_STAT = @REPLACE_STAT@
+REPLACE_STDIO_READ_FUNCS = @REPLACE_STDIO_READ_FUNCS@
+REPLACE_STDIO_WRITE_FUNCS = @REPLACE_STDIO_WRITE_FUNCS@
+REPLACE_STPNCPY = @REPLACE_STPNCPY@
+REPLACE_STRCASESTR = @REPLACE_STRCASESTR@
+REPLACE_STRCHRNUL = @REPLACE_STRCHRNUL@
+REPLACE_STRDUP = @REPLACE_STRDUP@
+REPLACE_STRERROR = @REPLACE_STRERROR@
+REPLACE_STRERROR_R = @REPLACE_STRERROR_R@
+REPLACE_STRFTIME = @REPLACE_STRFTIME@
+REPLACE_STRNCAT = @REPLACE_STRNCAT@
+REPLACE_STRNDUP = @REPLACE_STRNDUP@
+REPLACE_STRNLEN = @REPLACE_STRNLEN@
+REPLACE_STRSIGNAL = @REPLACE_STRSIGNAL@
+REPLACE_STRSTR = @REPLACE_STRSTR@
+REPLACE_STRTOD = @REPLACE_STRTOD@
+REPLACE_STRTOIMAX = @REPLACE_STRTOIMAX@
+REPLACE_STRTOK_R = @REPLACE_STRTOK_R@
+REPLACE_STRTOLD = @REPLACE_STRTOLD@
+REPLACE_STRTOUMAX = @REPLACE_STRTOUMAX@
+REPLACE_STRUCT_LCONV = @REPLACE_STRUCT_LCONV@
+REPLACE_STRUCT_TIMEVAL = @REPLACE_STRUCT_TIMEVAL@
+REPLACE_SYMLINK = @REPLACE_SYMLINK@
+REPLACE_SYMLINKAT = @REPLACE_SYMLINKAT@
+REPLACE_TANF = @REPLACE_TANF@
+REPLACE_TANHF = @REPLACE_TANHF@
+REPLACE_TIMEGM = @REPLACE_TIMEGM@
+REPLACE_TMPFILE = @REPLACE_TMPFILE@
+REPLACE_TOWLOWER = @REPLACE_TOWLOWER@
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+REPLACE_TRUNCATE = @REPLACE_TRUNCATE@
+REPLACE_TRUNCF = @REPLACE_TRUNCF@
+REPLACE_TRUNCL = @REPLACE_TRUNCL@
+REPLACE_TTYNAME_R = @REPLACE_TTYNAME_R@
+REPLACE_TZSET = @REPLACE_TZSET@
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+REPLACE_UTIME = @REPLACE_UTIME@
+REPLACE_UTIMENSAT = @REPLACE_UTIMENSAT@
+REPLACE_VASPRINTF = @REPLACE_VASPRINTF@
+REPLACE_VDPRINTF = @REPLACE_VDPRINTF@
+REPLACE_VFPRINTF = @REPLACE_VFPRINTF@
+REPLACE_VPRINTF = @REPLACE_VPRINTF@
+REPLACE_VSNPRINTF = @REPLACE_VSNPRINTF@
+REPLACE_VSPRINTF = @REPLACE_VSPRINTF@
+REPLACE_WCRTOMB = @REPLACE_WCRTOMB@
+REPLACE_WCSFTIME = @REPLACE_WCSFTIME@
+REPLACE_WCSNRTOMBS = @REPLACE_WCSNRTOMBS@
+REPLACE_WCSRTOMBS = @REPLACE_WCSRTOMBS@
+REPLACE_WCSTOK = @REPLACE_WCSTOK@
+REPLACE_WCSWIDTH = @REPLACE_WCSWIDTH@
+REPLACE_WCTOB = @REPLACE_WCTOB@
+REPLACE_WCTOMB = @REPLACE_WCTOMB@
+REPLACE_WCWIDTH = @REPLACE_WCWIDTH@
+REPLACE_WRITE = @REPLACE_WRITE@
+SED = @SED@
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+SEQ_LIBM = @SEQ_LIBM@
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+SYS_IOCTL_H_HAVE_WINSOCK2_H = @SYS_IOCTL_H_HAVE_WINSOCK2_H@
+SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS = @SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
+SYS_TIME_H_DEFINES_STRUCT_TIMESPEC = @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
+TIME_H_DEFINES_STRUCT_TIMESPEC = @TIME_H_DEFINES_STRUCT_TIMESPEC@
+UINT32_MAX_LT_UINTMAX_MAX = @UINT32_MAX_LT_UINTMAX_MAX@
+UINT64_MAX_EQ_ULONG_MAX = @UINT64_MAX_EQ_ULONG_MAX@
+UNDEFINE_STRTOK_R = @UNDEFINE_STRTOK_R@
+UNISTD_H_DEFINES_STRUCT_TIMESPEC = @UNISTD_H_DEFINES_STRUCT_TIMESPEC@
+UNISTD_H_HAVE_WINSOCK2_H = @UNISTD_H_HAVE_WINSOCK2_H@
+UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS = @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
+USE_ACL = @USE_ACL@
+USE_NLS = @USE_NLS@
+UTIME_H = @UTIME_H@
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+WARN_CFLAGS = @WARN_CFLAGS@
+WCHAR_T_SUFFIX = @WCHAR_T_SUFFIX@
+WERROR_CFLAGS = @WERROR_CFLAGS@
+WINDOWS_64_BIT_OFF_T = @WINDOWS_64_BIT_OFF_T@
+WINDOWS_64_BIT_ST_SIZE = @WINDOWS_64_BIT_ST_SIZE@
+WINDOWS_STAT_INODES = @WINDOWS_STAT_INODES@
+WINDOWS_STAT_TIMESPEC = @WINDOWS_STAT_TIMESPEC@
+WINT_T_SUFFIX = @WINT_T_SUFFIX@
+XGETTEXT = @XGETTEXT@
+XGETTEXT_015 = @XGETTEXT_015@
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+YACC = @YACC@
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+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+gl_LIBOBJS = @gl_LIBOBJS@
+gl_LTLIBOBJS = @gl_LTLIBOBJS@
+gltests_LIBOBJS = @gltests_LIBOBJS@
+gltests_LTLIBOBJS = @gltests_LTLIBOBJS@
+gltests_WITNESS = @gltests_WITNESS@
+host = @host@
+host_alias = @host_alias@
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+host_vendor = @host_vendor@
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+psdir = @psdir@
+runstatedir = @runstatedir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+single_binary_deps = @single_binary_deps@
+single_binary_install_type = @single_binary_install_type@
+single_binary_libs = @single_binary_libs@
+single_binary_progs = @single_binary_progs@
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+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+AUTOMAKE_OPTIONS = 1.11 foreign subdir-objects
+SUBDIRS = .
+TESTS_ENVIRONMENT = EXEEXT='@EXEEXT@' srcdir='$(srcdir)' \
+	USE_ACL=$(USE_ACL) LOCALE_FR='@LOCALE_FR@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_FR='@LOCALE_FR@' \
+	LOCALE_TR_UTF8='@LOCALE_TR_UTF8@' USE_ACL=$(USE_ACL) \
+	LOCALE_FR='@LOCALE_FR@' LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+	LOCALE_JA='@LOCALE_JA@' LOCALE_ZH_CN='@LOCALE_ZH_CN@' \
+	LOCALE_FR='@LOCALE_FR@' LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+	LOCALE_JA='@LOCALE_JA@' LOCALE_ZH_CN='@LOCALE_ZH_CN@' \
+	LOCALE_FR='@LOCALE_FR@' LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+	LOCALE_JA='@LOCALE_JA@' LOCALE_ZH_CN='@LOCALE_ZH_CN@' \
+	LOCALE_TR_UTF8='@LOCALE_TR_UTF8@' \
+	LOCALE_ZH_CN='@LOCALE_ZH_CN@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_FR='@LOCALE_FR@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_JA='@LOCALE_JA@' \
+	LOCALE_ZH_CN='@LOCALE_ZH_CN@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+	LOCALE_ZH_CN='@LOCALE_ZH_CN@' LOCALE_FR='@LOCALE_FR@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_FR='@LOCALE_FR@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_JA='@LOCALE_JA@' \
+	LOCALE_ZH_CN='@LOCALE_ZH_CN@' LOCALE_FR='@LOCALE_FR@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_FR='@LOCALE_FR@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' abs_aux_dir='$(abs_aux_dir)' \
+	abs_aux_dir='$(abs_aux_dir)' MAKE='$(MAKE)' \
+	LOCALE_FR='@LOCALE_FR@' LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+	LOCALE_JA='@LOCALE_JA@' LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+noinst_HEADERS = 
+noinst_LIBRARIES = 
+check_LIBRARIES = libtests.a
+EXTRA_DIST = accept.c w32sock.h test-accept.c signature.h macros.h \
+	test-set-mode-acl.sh test-set-mode-acl-1.sh \
+	test-set-mode-acl-2.sh test-copy-acl.sh test-copy-acl-1.sh \
+	test-copy-acl-2.sh test-set-mode-acl.c test-copy-acl.c \
+	test-sameacls.c macros.h test-alignof.c test-alloca-opt.c \
+	test-areadlink.h test-areadlink.c macros.h test-areadlink.h \
+	test-areadlink-with-size.c macros.h test-areadlink.h \
+	test-areadlinkat.c macros.h test-argmatch.c macros.h \
+	test-argv-iter.c macros.h test-arpa_inet.c test-base32.c \
+	macros.h test-base64.c macros.h test-binary-io.sh \
+	test-binary-io.c macros.h bind.c w32sock.h test-bind.c \
+	signature.h macros.h test-bitrotate.c macros.h test-btowc1.sh \
+	test-btowc2.sh test-btowc.c signature.h macros.h \
+	test-byteswap.c macros.h test-c-ctype.c macros.h \
+	test-c-strcase.sh test-c-strcasecmp.c test-c-strncasecmp.c \
+	macros.h test-calloc-gnu.c test-canonicalize.c null-ptr.h \
+	macros.h test-chdir.c signature.h macros.h nap.h test-chown.h \
+	test-chown.c signature.h macros.h test-cloexec.c macros.h \
+	test-close.c signature.h macros.h test-closein.sh \
+	test-closein.c connect.c w32sock.h test-connect.c signature.h \
+	macros.h test-count-leading-zeros.c macros.h test-md5.c \
+	test-digest.h bench-md5.c bench-digest.h macros.h test-sha1.c \
+	test-digest.h bench-sha1.c bench-digest.h macros.h \
+	test-sha256.c test-digest.h bench-sha224.c bench-sha256.c \
+	bench-digest.h macros.h test-sha512.c test-digest.h \
+	bench-sha384.c bench-sha512.c bench-digest.h macros.h \
+	test-ctype.c test-di-set.c macros.h test-dirent-safer.c \
+	macros.h test-dirent.c test-dirname.c test-dup.c signature.h \
+	macros.h test-dup2.c signature.h macros.h test-environ.c \
+	test-errno.c test-exclude.c test-exclude1.sh test-exclude2.sh \
+	test-exclude3.sh test-exclude4.sh test-exclude5.sh \
+	test-exclude6.sh test-exclude7.sh test-exclude8.sh \
+	test-faccessat.c signature.h macros.h test-fadvise.c \
+	test-fchdir.c signature.h macros.h test-fchmodat.c signature.h \
+	macros.h nap.h test-chown.h test-lchown.h test-fchownat.c \
+	signature.h macros.h test-fclose.c test-fcntl-h.c test-open.h \
+	test-fcntl-safer.c macros.h test-fcntl.c signature.h macros.h \
+	test-fdatasync.c signature.h macros.h test-fdopen.c \
+	signature.h macros.h test-fdopendir.c signature.h macros.h \
+	nap.h test-futimens.h test-lutimens.h test-utimens.h \
+	test-utimens-common.h test-fdutimensat.c macros.h \
+	test-fflush.c test-fflush2.sh test-fflush2.c signature.h \
+	macros.h test-fgetc.c signature.h macros.h \
+	test-file-has-acl.sh test-file-has-acl-1.sh \
+	test-file-has-acl-2.sh test-file-has-acl.c macros.h \
+	test-filenamecat.c test-filevercmp.c macros.h test-float.c \
+	macros.h test-fnmatch-h.c test-fnmatch.c signature.h macros.h \
+	test-fopen.h test-fopen-safer.c macros.h test-fopen.h \
+	test-fopen.c signature.h macros.h test-fpending.c \
+	test-fpending.sh macros.h test-fpurge.c macros.h test-fputc.c \
+	signature.h macros.h test-fread.c signature.h macros.h \
+	test-freadahead.c test-freadahead.sh macros.h test-freading.c \
+	macros.h test-freadptr.c test-freadptr.sh test-freadptr2.c \
+	test-freadptr2.sh macros.h test-freadseek.c test-freadseek.sh \
+	macros.h test-freopen-safer.c macros.h test-freopen.c \
+	signature.h macros.h test-frexp.c test-frexp.h minus-zero.h \
+	infinity.h nan.h signature.h macros.h randomd.c test-frexpl.c \
+	test-frexp.h minus-zero.h infinity.h nan.h signature.h \
+	macros.h randoml.c test-fseek.c test-fseek.sh test-fseek2.sh \
+	signature.h macros.h test-fseeko.c test-fseeko.sh \
+	test-fseeko2.sh test-fseeko3.c test-fseeko3.sh test-fseeko4.c \
+	test-fseeko4.sh signature.h macros.h test-fseterr.c \
+	test-fstat.c signature.h macros.h test-fstatat.c test-lstat.h \
+	test-stat.h signature.h macros.h test-fsync.c signature.h \
+	macros.h test-ftell.c test-ftell.sh test-ftell2.sh \
+	test-ftell3.c signature.h macros.h test-ftello.c \
+	test-ftello.sh test-ftello2.sh test-ftello3.c test-ftello4.c \
+	test-ftello4.sh signature.h macros.h test-ftruncate.c \
+	test-ftruncate.sh signature.h macros.h nap.h test-futimens.h \
+	test-utimens-common.h test-futimens.c signature.h macros.h \
+	test-fwrite.c signature.h macros.h signature.h \
+	test-getaddrinfo.c test-getcwd-lgpl.c signature.h macros.h \
+	test-getcwd.c test-getcwd.sh test-getdelim.c signature.h \
+	macros.h test-getdtablesize.c signature.h macros.h \
+	test-getgroups.c signature.h macros.h signature.h \
+	test-gethostname.c test-getline.c signature.h macros.h \
+	test-getloadavg.c signature.h test-getlogin.c test-getlogin.h \
+	signature.h macros.h test-getndelim2.c macros.h macros.h \
+	signature.h test-getopt-gnu.c test-getopt-main.h test-getopt.h \
+	test-getopt_long.h macros.h signature.h test-getopt-posix.c \
+	test-getopt-main.h test-getopt.h test-getprogname.c \
+	getrusage.c test-getrusage.c signature.h macros.h signature.h \
+	test-gettimeofday.c test-hard-locale.c locale.c test-hash.c \
+	macros.h test-i-ring.c macros.h test-iconv-h.c test-iconv.c \
+	signature.h macros.h test-ignore-value.c test-inet_ntop.c \
+	signature.h macros.h inet_pton.c test-inet_pton.c signature.h \
+	macros.h test-ino-map.c macros.h test-intprops.c macros.h \
+	macros.h test-inttostr.c test-inttypes.c ioctl.c w32sock.h \
+	test-ioctl.c signature.h macros.h test-isatty.c signature.h \
+	macros.h test-isblank.c signature.h macros.h \
+	test-isnand-nolibm.c test-isnand.h minus-zero.h infinity.h \
+	nan.h macros.h test-isnanf-nolibm.c test-isnanf.h minus-zero.h \
+	infinity.h nan.h macros.h test-isnanl-nolibm.c test-isnanl.h \
+	minus-zero.h infinity.h nan.h macros.h test-iswblank.c \
+	macros.h test-iswdigit.sh test-iswdigit.c signature.h macros.h \
+	test-iswxdigit.sh test-iswxdigit.c signature.h macros.h \
+	test-langinfo.c test-lchmod.c signature.h macros.h nap.h \
+	test-lchown.h test-lchown.c signature.h macros.h \
+	test-limits-h.c test-link.h test-link.c signature.h macros.h \
+	test-link.h test-linkat.c signature.h macros.h listen.c \
+	w32sock.h test-listen.c signature.h macros.h \
+	test-localcharset.c test-locale.c test-localeconv.c \
+	signature.h macros.h localename-table.h localename.h \
+	test-localename.c macros.h test-rwlock1.c test-lock.c \
+	test-once.c test-lseek.c test-lseek.sh signature.h macros.h \
+	test-lstat.h test-lstat.c signature.h macros.h \
+	test-malloc-gnu.c test-malloca.c test-math.c macros.h \
+	test-mbrtowc1.sh test-mbrtowc2.sh test-mbrtowc3.sh \
+	test-mbrtowc4.sh test-mbrtowc5.sh test-mbrtowc.c \
+	test-mbrtowc-w32-1.sh test-mbrtowc-w32-2.sh \
+	test-mbrtowc-w32-3.sh test-mbrtowc-w32-4.sh \
+	test-mbrtowc-w32-5.sh test-mbrtowc-w32-6.sh \
+	test-mbrtowc-w32-7.sh test-mbrtowc-w32.c signature.h macros.h \
+	test-mbsalign.c macros.h test-mbscasecmp.sh test-mbscasecmp.c \
+	macros.h test-mbschr.sh test-mbschr.c macros.h test-mbsinit.sh \
+	test-mbsinit.c signature.h macros.h test-mbsrtowcs1.sh \
+	test-mbsrtowcs2.sh test-mbsrtowcs3.sh test-mbsrtowcs4.sh \
+	test-mbsrtowcs.c signature.h macros.h test-mbsstr1.c \
+	test-mbsstr2.sh test-mbsstr2.c test-mbsstr3.sh test-mbsstr3.c \
+	macros.h test-memcasecmp.c zerosize-ptr.h macros.h \
+	test-memchr.c zerosize-ptr.h signature.h macros.h \
+	test-memchr2.c zerosize-ptr.h macros.h test-memcoll.c macros.h \
+	test-memrchr.c zerosize-ptr.h signature.h macros.h \
+	test-mkdir.h test-mkdir.c signature.h macros.h test-mkfifo.h \
+	test-mkfifo.c signature.h macros.h test-mkfifo.h test-mknod.c \
+	signature.h macros.h test-nanosleep.c signature.h macros.h \
+	test-netdb.c test-netinet_in.c test-nl_langinfo.sh \
+	test-nl_langinfo.c test-nl_langinfo-mt.c signature.h macros.h \
+	test-nstrftime.c macros.h test-open.h test-open.c signature.h \
+	macros.h test-openat-safer.c macros.h test-openat.c \
+	test-open.h signature.h macros.h test-parse-datetime.c \
+	macros.h test-pathmax.c perror.c macros.h signature.h \
+	test-perror.c test-perror2.c test-perror.sh test-pipe.c \
+	signature.h macros.h test-pipe2.c signature.h macros.h \
+	test-posixtm.c macros.h test-printf-frexp.c macros.h \
+	test-printf-frexpl.c macros.h test-priv-set.c macros.h \
+	test-pthread-cond.c macros.h test-pthread.c \
+	test-pthread-mutex.c macros.h test-pthread-thread.c macros.h \
+	test-pthread_sigmask1.c test-pthread_sigmask2.c signature.h \
+	macros.h test-quotearg-simple.c test-quotearg.h macros.h \
+	zerosize-ptr.h test-raise.c signature.h macros.h \
+	test-rand-isaac.c macros.h test-read-file.c test-read.c \
+	signature.h macros.h test-readlink.h test-readlink.c \
+	signature.h macros.h test-readlink.h test-readlinkat.c \
+	signature.h macros.h macros.h test-readtokens.c \
+	test-readtokens.sh test-realloc-gnu.c test-regex.c macros.h \
+	test-remove.c signature.h macros.h test-rename.h test-rename.c \
+	signature.h macros.h test-rename.h test-renameat.c signature.h \
+	macros.h test-rename.h test-renameatu.c signature.h macros.h \
+	test-rmdir.h test-rmdir.c signature.h macros.h test-sched.c \
+	sched_yield.c secure_getenv.c macros.h signature.h \
+	test-select.c test-select.h test-select-fd.c test-select-in.sh \
+	test-select-out.sh test-select-stdin.c test-setenv.c \
+	signature.h macros.h setlocale.c test-setlocale_null.c \
+	test-setlocale_null-mt-one.c test-setlocale_null-mt-all.c \
+	test-setlocale1.sh test-setlocale1.c test-setlocale2.sh \
+	test-setlocale2.c signature.h macros.h setsockopt.c w32sock.h \
+	test-setsockopt.c signature.h macros.h test-sigaction.c \
+	signature.h macros.h test-signal-h.c test-signbit.c \
+	minus-zero.h infinity.h macros.h test-sigprocmask.c \
+	signature.h macros.h sleep.c test-sleep.c signature.h macros.h \
+	_Noreturn.h arg-nonnull.h c++defs.h unused-parameter.h \
+	warn-on-use.h test-snprintf.c signature.h macros.h socket.c \
+	w32sock.h test-sockets.c test-stat.h test-stat.c signature.h \
+	macros.h test-stat-time.c macros.h nap.h test-statat.c \
+	test-stdalign.c macros.h test-stdbool.c test-stddef.c \
+	test-stdint.c test-stdio.c test-stdlib.c test-sys_wait.h \
+	test-strerror.c signature.h macros.h strerror_r.c \
+	test-strerror_r.c signature.h macros.h test-striconv.c \
+	macros.h test-string.c test-strncat.c unistr/test-strncat.h \
+	zerosize-ptr.h signature.h macros.h test-strnlen.c \
+	zerosize-ptr.h signature.h macros.h test-strsignal.c \
+	signature.h macros.h test-strtod.c test-strtod1.sh \
+	test-strtod1.c signature.h minus-zero.h macros.h \
+	test-strtoimax.c signature.h macros.h test-strtold.c \
+	test-strtold1.sh test-strtold1.c signature.h minus-zero.h \
+	macros.h test-strtoll.c signature.h macros.h test-strtoull.c \
+	signature.h macros.h test-strtoumax.c signature.h macros.h \
+	test-symlink.h test-symlink.c signature.h macros.h \
+	test-symlink.h test-symlinkat.c signature.h macros.h \
+	test-sys_ioctl.c test-sys_resource.c test-sys_select.c \
+	signature.h test-sys_socket.c test-sys_stat.c test-sys_time.c \
+	test-sys_types.c test-sys_uio.c test-sys_utsname.c \
+	test-sys_wait.c test-sys_wait.h test-termios.c init.sh \
+	test-init.sh test-thread_self.c test-thread_create.c macros.h \
+	test-time.c test-timespec.c macros.h test-tls.c tmpfile.c \
+	test-u64.c test-uname.c signature.h macros.h test-dup-safer.c \
+	macros.h test-unistd.c unistr/test-u8-mbtoucr.c macros.h \
+	unistr/test-u8-uctomb.c macros.h uniwidth/test-uc_width.c \
+	uniwidth/test-uc_width2.c uniwidth/test-uc_width2.sh macros.h \
+	test-unlink.h test-unlink.c signature.h macros.h \
+	test-unlinkat.c test-rmdir.h test-unlink.h signature.h \
+	macros.h test-unsetenv.c signature.h macros.h \
+	test-update-copyright.sh test-userspec.c usleep.c \
+	test-usleep.c signature.h macros.h test-utime-h.c test-utime.c \
+	nap.h test-utimens-common.h macros.h nap.h test-futimens.h \
+	test-lutimens.h test-utimens.h test-utimens-common.h \
+	test-utimens.c macros.h nap.h test-lutimens.h test-utimens.h \
+	test-utimens-common.h test-utimensat.c signature.h macros.h \
+	test-vasnprintf.c macros.h test-vasprintf-posix.c minus-zero.h \
+	infinity.h nan.h macros.h test-vasprintf.c signature.h \
+	macros.h test-vc-list-files-git.sh test-vc-list-files-cvs.sh \
+	test-verify.c test-verify-try.c test-verify.sh \
+	test-version-etc.c test-version-etc.sh test-vfprintf-posix.sh \
+	test-vfprintf-posix.c test-fprintf-posix.h \
+	test-printf-posix.output infinity.h signature.h macros.h \
+	test-vprintf-posix.sh test-vprintf-posix.c test-printf-posix.h \
+	test-printf-posix.output infinity.h signature.h macros.h \
+	test-wchar.c test-wcrtomb.sh test-wcrtomb.c \
+	test-wcrtomb-w32-1.sh test-wcrtomb-w32-2.sh \
+	test-wcrtomb-w32-3.sh test-wcrtomb-w32-4.sh \
+	test-wcrtomb-w32-5.sh test-wcrtomb-w32-6.sh \
+	test-wcrtomb-w32-7.sh test-wcrtomb-w32.c signature.h macros.h \
+	wctob.c wctomb-impl.h wctomb.c test-wctype-h.c macros.h \
+	test-wcwidth.c signature.h macros.h test-write.c signature.h \
+	macros.h test-xalloc-die.c test-xalloc-die.sh \
+	test-xprintf-posix.sh test-xfprintf-posix.c \
+	test-xprintf-posix.c test-fprintf-posix.h test-printf-posix.h \
+	test-printf-posix.output infinity.h macros.h test-xstrtoimax.c \
+	test-xstrtoimax.sh test-xstrtol.c test-xstrtoul.c \
+	test-xstrtol.sh test-xstrtoumax.c test-xstrtoumax.sh \
+	test-xvasprintf.c macros.h test-yesno.c test-yesno.sh
+BUILT_SOURCES = 
+SUFFIXES = 
+
+# This test expects compilation of test-verify-try.c to fail, and
+# each time it fails, the makefile rule does not perform the usual
+#  "mv -f $name.Tpo $name.po, so tell make clean to remove that file.
+MOSTLYCLEANFILES = core *.stackdump test-fflush.txt test-fpending.t \
+	t-fpurge.tmp t-freading.tmp t-ftell3.tmp t-ftello3.tmp \
+	test-getdelim.txt test-getline.txt test-getndelim2.txt \
+	.deps/test-verify-try.Tpo
+MOSTLYCLEANDIRS = 
+CLEANFILES = 
+DISTCLEANFILES = 
+MAINTAINERCLEANFILES = 
+AM_CPPFLAGS = \
+  -D@gltests_WITNESS@=1 \
+  -I. -I$(srcdir) \
+  -I.. -I$(srcdir)/.. \
+  -I../lib -I$(srcdir)/../lib
+
+LDADD = libtests.a ../lib/libcoreutils.a libtests.a $(LIBTESTS_LIBDEPS)
+libtests_a_SOURCES = localename.c localename-table.c glthread/thread.h \
+	glthread/thread.c timespec-add.c timespec-sub.c tmpdir.h \
+	tmpdir.c glthread/yield.h
+libtests_a_LIBADD = $(gltests_LIBOBJS)
+libtests_a_DEPENDENCIES = $(gltests_LIBOBJS)
+EXTRA_libtests_a_SOURCES = accept.c bind.c connect.c getrusage.c \
+	inet_pton.c ioctl.c listen.c perror.c sched_yield.c \
+	secure_getenv.c setlocale.c setsockopt.c sleep.c socket.c \
+	strerror_r.c tmpfile.c usleep.c wctob.c wctomb.c
+AM_LIBTOOLFLAGS = --preserve-dup-deps
+test_accept_LDADD = $(LDADD) @LIBSOCKET@
+test_set_mode_acl_LDADD = $(LDADD) $(LIB_ACL) @LIBINTL@ $(LIB_MBRTOWC)
+test_copy_acl_LDADD = $(LDADD) $(LIB_ACL) @LIBINTL@ $(LIB_MBRTOWC)
+test_sameacls_LDADD = $(LDADD) $(LIB_ACL) @LIBINTL@ $(LIB_MBRTOWC)
+test_areadlinkat_LDADD = $(LDADD) @LIBINTL@
+test_argmatch_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC)
+test_bind_LDADD = $(LDADD) @LIBSOCKET@ $(INET_PTON_LIB)
+test_btowc_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_c_ctype_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_c_strcasecmp_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_c_strncasecmp_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_canonicalize_LDADD = $(LDADD) @LIBINTL@
+test_chown_LDADD = $(LDADD) $(LIB_NANOSLEEP)
+test_closein_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC)
+test_connect_LDADD = $(LDADD) @LIBSOCKET@ $(INET_PTON_LIB)
+test_md5_LDADD = $(LDADD) @LIB_CRYPTO@
+bench_md5_LDADD = $(LDADD) @LIB_CRYPTO@
+test_sha1_LDADD = $(LDADD) @LIB_CRYPTO@
+bench_sha1_LDADD = $(LDADD) @LIB_CRYPTO@
+test_sha256_LDADD = $(LDADD) @LIB_CRYPTO@
+bench_sha224_LDADD = $(LDADD) @LIB_CRYPTO@
+bench_sha256_LDADD = $(LDADD) @LIB_CRYPTO@
+test_sha512_LDADD = $(LDADD) @LIB_CRYPTO@
+bench_sha384_LDADD = $(LDADD) @LIB_CRYPTO@
+bench_sha512_LDADD = $(LDADD) @LIB_CRYPTO@
+# Link with libintl when needed. dirent-safer uses fdopendir if it is present,
+# and fdopendir indirectly depends on openat-die -> gettext-h.
+test_dirent_safer_LDADD = $(LDADD) $(LIBINTL)
+test_dirname_LDADD = $(LDADD) @LIBINTL@
+test_exclude_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC) $(LIBTHREAD)
+test_faccessat_LDADD = $(LDADD) $(LIB_EACCESS) @LIBINTL@
+test_fchdir_LDADD = $(LDADD) $(LIBINTL)
+test_fchmodat_LDADD = $(LDADD) @LIBINTL@
+test_fchownat_LDADD = $(LDADD) $(LIB_NANOSLEEP) @LIBINTL@
+test_fdatasync_LDADD = $(LDADD) $(LIB_FDATASYNC)
+test_fdopendir_LDADD = $(LDADD) @LIBINTL@
+test_fdutimensat_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) \
+  $(LIB_NANOSLEEP) @LIBINTL@
+
+test_file_has_acl_LDADD = $(LDADD) $(LIB_HAS_ACL)
+test_filenamecat_LDADD = $(LDADD) @LIBINTL@
+test_fnmatch_LDADD = $(LDADD) $(LIB_MBRTOWC)
+test_frexp_nolibm_SOURCES = test-frexp.c randomd.c
+test_frexpl_nolibm_SOURCES = test-frexpl.c randoml.c
+test_fstatat_LDADD = $(LDADD) @LIBINTL@
+test_futimens_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) $(LIB_NANOSLEEP) @LIBINTL@
+test_getaddrinfo_LDADD = $(LDADD) @GETADDRINFO_LIB@ @LIBINTL@
+test_getcwd_lgpl_LDADD = $(LDADD) $(LIBINTL)
+test_getcwd_LDADD = $(LDADD) @LIBINTL@
+test_gethostname_LDADD = $(LDADD) @GETHOSTNAME_LIB@
+test_getloadavg_LDADD = $(LDADD) @GETLOADAVG_LIBS@
+test_getlogin_LDADD = $(LDADD) $(LIB_GETLOGIN)
+test_getopt_gnu_LDADD = $(LDADD) $(LIBINTL)
+test_getopt_posix_LDADD = $(LDADD) $(LIBINTL)
+test_getprogname_LDADD = $(LDADD)
+GPERF = gperf
+V_GPERF = $(V_GPERF_@AM_V@)
+V_GPERF_ = $(V_GPERF_@AM_DEFAULT_V@)
+V_GPERF_0 = @echo "  GPERF   " $@;
+test_hard_locale_LDADD = $(LDADD) $(LIB_SETLOCALE) @LIB_HARD_LOCALE@
+current_locale_SOURCES = locale.c
+test_iconv_LDADD = $(LDADD) @LIBICONV@
+test_inet_ntop_LDADD = $(LDADD) @INET_NTOP_LIB@
+test_inet_pton_LDADD = $(LDADD) @INET_PTON_LIB@
+test_iswdigit_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_iswxdigit_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_lchmod_LDADD = $(LDADD) @LIBINTL@
+test_lchown_LDADD = $(LDADD) $(LIB_NANOSLEEP)
+test_link_LDADD = $(LDADD) @LIBINTL@
+test_linkat_LDADD = $(LDADD) @LIBINTL@
+test_listen_LDADD = $(LDADD) @LIBSOCKET@
+test_localcharset_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_localename_LDADD = $(LDADD) $(LIB_SETLOCALE) @INTL_MACOSX_LIBS@ $(LIBTHREAD)
+test_rwlock1_LDADD = $(LDADD) @LIBMULTITHREAD@ @YIELD_LIB@
+test_lock_LDADD = $(LDADD) @LIBMULTITHREAD@ @YIELD_LIB@ @LIB_SEMAPHORE@
+test_once1_SOURCES = test-once.c
+test_once1_LDADD = $(LDADD) @LIBTHREAD@
+test_once2_SOURCES = test-once.c
+test_once2_LDADD = $(LDADD) @LIBMULTITHREAD@
+test_mbrtowc_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_mbscasecmp_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_mbschr_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_mbsinit_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_mbsrtowcs_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_mbsstr1_LDADD = $(LDADD) $(LIB_MBRTOWC)
+test_mbsstr2_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_mbsstr3_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_nanosleep_LDADD = $(LDADD) $(LIB_NANOSLEEP)
+test_nl_langinfo_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_nl_langinfo_mt_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIBMULTITHREAD) $(LIB_NANOSLEEP)
+test_openat_safer_LDADD = $(LDADD) @LIBINTL@
+test_openat_LDADD = $(LDADD) @LIBINTL@
+test_parse_datetime_LDADD = $(LDADD) @LIBINTL@ $(LIB_CLOCK_GETTIME)
+test_pipe2_LDADD = $(LDADD) $(LIBSOCKET)
+test_pthread_cond_LDADD = $(LDADD) @LIBPMULTITHREAD@ @LIB_SCHED_YIELD@
+test_pthread_mutex_LDADD = $(LDADD) @LIBPMULTITHREAD@ @LIB_SCHED_YIELD@ @LIB_SEMAPHORE@
+test_pthread_thread_LDADD = $(LDADD) @LIBPMULTITHREAD@
+test_pthread_sigmask1_LDADD = $(LDADD) @LIB_PTHREAD_SIGMASK@
+test_pthread_sigmask2_LDADD = $(LDADD) @LIB_PTHREAD_SIGMASK@ @LIBMULTITHREAD@
+test_quotearg_simple_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC)
+test_readlinkat_LDADD = $(LDADD) @LIBINTL@
+test_readtokens_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC)
+test_regex_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC) @LIBINTL@ $(LIBTHREAD)
+test_rename_LDADD = $(LDADD) @LIBINTL@
+test_renameat_LDADD = $(LDADD) @LIBINTL@
+test_renameatu_LDADD = $(LDADD) @LIBINTL@
+test_select_LDADD = $(LDADD) @LIB_SELECT@ @LIBSOCKET@ $(INET_PTON_LIB)
+test_select_fd_LDADD = $(LDADD) @LIB_SELECT@
+test_select_stdin_LDADD = $(LDADD) @LIB_SELECT@
+test_setlocale_null_LDADD = $(LDADD) @LIB_SETLOCALE_NULL@
+test_setlocale_null_mt_one_LDADD = $(LDADD) @LIB_SETLOCALE_NULL@ $(LIBMULTITHREAD) $(LIB_NANOSLEEP)
+test_setlocale_null_mt_all_LDADD = $(LDADD) @LIB_SETLOCALE_NULL@ $(LIBMULTITHREAD) $(LIB_NANOSLEEP)
+test_setlocale1_LDADD = $(LDADD) @LIB_SETLOCALE@
+test_setlocale2_LDADD = $(LDADD) @LIB_SETLOCALE@
+test_setsockopt_LDADD = $(LDADD) @LIBSOCKET@
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+_NORETURN_H = $(srcdir)/_Noreturn.h
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+ARG_NONNULL_H = $(srcdir)/arg-nonnull.h
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+CXXDEFS_H = $(srcdir)/c++defs.h
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+UNUSED_PARAMETER_H = $(srcdir)/unused-parameter.h
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+WARN_ON_USE_H = $(srcdir)/warn-on-use.h
+test_sockets_LDADD = $(LDADD) @LIBSOCKET@
+test_stat_LDADD = $(LDADD) $(LIBINTL)
+test_stat_time_LDADD = $(LDADD) $(LIB_NANOSLEEP)
+test_statat_LDADD = $(LDADD) @LIBINTL@
+test_striconv_LDADD = $(LDADD) @LIBICONV@
+test_strsignal_LDADD = $(LDADD) @LIBINTL@ $(LIBTHREAD)
+test_strtod1_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_strtold1_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_symlinkat_LDADD = $(LDADD) @LIBINTL@
+test_thread_self_LDADD = $(LDADD) @LIBTHREAD@
+test_thread_create_LDADD = $(LDADD) @LIBMULTITHREAD@
+test_tls_LDADD = $(LDADD) @LIBMULTITHREAD@ @YIELD_LIB@
+test_uname_LDADD = $(LDADD) @GETHOSTNAME_LIB@
+test_u8_mbtoucr_SOURCES = unistr/test-u8-mbtoucr.c
+test_u8_mbtoucr_LDADD = $(LDADD) $(LIBUNISTRING)
+test_u8_uctomb_SOURCES = unistr/test-u8-uctomb.c
+test_u8_uctomb_LDADD = $(LDADD) $(LIBUNISTRING)
+test_uc_width_SOURCES = uniwidth/test-uc_width.c
+test_uc_width_LDADD = $(LDADD) $(LIBUNISTRING)
+test_uc_width2_SOURCES = uniwidth/test-uc_width2.c
+test_uc_width2_LDADD = $(LDADD) $(LIBUNISTRING)
+test_unlinkat_LDADD = $(LDADD) @LIBINTL@
+test_userspec_LDADD = $(LDADD) @LIBINTL@
+test_utime_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) $(LIB_NANOSLEEP) @LIBINTL@
+test_utimens_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) $(LIB_NANOSLEEP) @LIBINTL@
+test_utimensat_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) $(LIB_NANOSLEEP) @LIBINTL@
+test_version_etc_LDADD = $(LDADD) @LIBINTL@
+test_wcrtomb_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_wcwidth_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIBUNISTRING)
+test_xalloc_die_LDADD = $(LDADD) @LIBINTL@
+test_xfprintf_posix_LDADD = $(LDADD) @LIBINTL@
+test_xprintf_posix_LDADD = $(LDADD) @LIBINTL@
+test_xstrtoimax_LDADD = $(LDADD) @LIBINTL@
+test_xstrtol_LDADD = $(LDADD) @LIBINTL@
+test_xstrtoul_LDADD = $(LDADD) @LIBINTL@
+test_xstrtoumax_LDADD = $(LDADD) @LIBINTL@
+test_xvasprintf_LDADD = $(LDADD) @LIBINTL@
+test_yesno_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC)
+AM_CFLAGS = $(GNULIB_TEST_WARN_CFLAGS) $(WERROR_CFLAGS)
+
+# A few tests are inherently warning-evoking.
+# In the typical case where we use -Werror, exempt the few offenders.
+
+# test-xvasprintf.c: In function 'test_xasprintf':
+# test-xvasprintf.c:100: error: format not a string literal and no \
+#   format arguments [-Wformat-security]
+test_xvasprintf_CFLAGS = $(AM_CFLAGS) \
+  `test -n '$(WERROR_CFLAGS)' && echo ' -Wno-format-security'`
+
+
+# test-lock.c: In function 'lock_mutator_thread':
+# test-lock.c:148: error: cast from function call of type 'pthread_t' to \
+#   non-matching type 'void *' [-Wbad-function-cast]
+test_lock_CFLAGS = $(AM_CFLAGS) \
+  `test -n '$(WERROR_CFLAGS)' && echo ' -Wno-bad-function-cast'`
+
+test_tls_CFLAGS = $(AM_CFLAGS) \
+  `test -n '$(WERROR_CFLAGS)' && echo ' -Wno-bad-function-cast'`
+
+all: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) all-recursive
+
+.SUFFIXES:
+.SUFFIXES: .c .log .o .obj .test .test$(EXEEXT) .trs
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am $(srcdir)/gnulib.mk $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign gnulib-tests/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign gnulib-tests/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
+	esac;
+$(srcdir)/gnulib.mk $(am__empty):
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+install-binPROGRAMS: $(bin_PROGRAMS)
+	@$(NORMAL_INSTALL)
+	@list='$(bin_PROGRAMS)'; test -n "$(bindir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(bindir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(bindir)" || exit 1; \
+	fi; \
+	for p in $$list; do echo "$$p $$p"; done | \
+	sed 's/$(EXEEXT)$$//' | \
+	while read p p1; do if test -f $$p \
+	  ; then echo "$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n;h' \
+	    -e 's|.*|.|' \
+	    -e 'p;x;s,.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/' | \
+	sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1 } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) files[d] = files[d] " " $$1; \
+	    else { print "f", $$3 "/" $$4, $$1; } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	    if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	    test -z "$$files" || { \
+	      echo " $(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $$files '$(DESTDIR)$(bindir)$$dir'"; \
+	      $(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $$files "$(DESTDIR)$(bindir)$$dir" || exit $$?; \
+	    } \
+	; done
+
+uninstall-binPROGRAMS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(bin_PROGRAMS)'; test -n "$(bindir)" || list=; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	  sed -e 'h;s,^.*/,,;s/$(EXEEXT)$$//;$(transform)' \
+	      -e 's/$$/$(EXEEXT)/' \
+	`; \
+	test -n "$$list" || exit 0; \
+	echo " ( cd '$(DESTDIR)$(bindir)' && rm -f" $$files ")"; \
+	cd "$(DESTDIR)$(bindir)" && rm -f $$files
+
+clean-binPROGRAMS:
+	-test -z "$(bin_PROGRAMS)" || rm -f $(bin_PROGRAMS)
+
+clean-checkPROGRAMS:
+	-test -z "$(check_PROGRAMS)" || rm -f $(check_PROGRAMS)
+
+clean-noinstPROGRAMS:
+	-test -z "$(noinst_PROGRAMS)" || rm -f $(noinst_PROGRAMS)
+install-pkglibexecPROGRAMS: $(pkglibexec_PROGRAMS)
+	@$(NORMAL_INSTALL)
+	@list='$(pkglibexec_PROGRAMS)'; test -n "$(pkglibexecdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pkglibexecdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pkglibexecdir)" || exit 1; \
+	fi; \
+	for p in $$list; do echo "$$p $$p"; done | \
+	sed 's/$(EXEEXT)$$//' | \
+	while read p p1; do if test -f $$p \
+	  ; then echo "$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n;h' \
+	    -e 's|.*|.|' \
+	    -e 'p;x;s,.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/' | \
+	sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1 } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) files[d] = files[d] " " $$1; \
+	    else { print "f", $$3 "/" $$4, $$1; } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	    if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	    test -z "$$files" || { \
+	      echo " $(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $$files '$(DESTDIR)$(pkglibexecdir)$$dir'"; \
+	      $(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $$files "$(DESTDIR)$(pkglibexecdir)$$dir" || exit $$?; \
+	    } \
+	; done
+
+uninstall-pkglibexecPROGRAMS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(pkglibexec_PROGRAMS)'; test -n "$(pkglibexecdir)" || list=; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	  sed -e 'h;s,^.*/,,;s/$(EXEEXT)$$//;$(transform)' \
+	      -e 's/$$/$(EXEEXT)/' \
+	`; \
+	test -n "$$list" || exit 0; \
+	echo " ( cd '$(DESTDIR)$(pkglibexecdir)' && rm -f" $$files ")"; \
+	cd "$(DESTDIR)$(pkglibexecdir)" && rm -f $$files
+
+clean-pkglibexecPROGRAMS:
+	-test -z "$(pkglibexec_PROGRAMS)" || rm -f $(pkglibexec_PROGRAMS)
+
+clean-checkLIBRARIES:
+	-test -z "$(check_LIBRARIES)" || rm -f $(check_LIBRARIES)
+
+clean-noinstLIBRARIES:
+	-test -z "$(noinst_LIBRARIES)" || rm -f $(noinst_LIBRARIES)
+glthread/$(am__dirstamp):
+	@$(MKDIR_P) glthread
+	@: > glthread/$(am__dirstamp)
+glthread/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) glthread/$(DEPDIR)
+	@: > glthread/$(DEPDIR)/$(am__dirstamp)
+glthread/thread.$(OBJEXT): glthread/$(am__dirstamp) \
+	glthread/$(DEPDIR)/$(am__dirstamp)
+
+libtests.a: $(libtests_a_OBJECTS) $(libtests_a_DEPENDENCIES) $(EXTRA_libtests_a_DEPENDENCIES) 
+	$(AM_V_at)-rm -f libtests.a
+	$(AM_V_AR)$(libtests_a_AR) libtests.a $(libtests_a_OBJECTS) $(libtests_a_LIBADD)
+	$(AM_V_at)$(RANLIB) libtests.a
+
+bench-md5$(EXEEXT): $(bench_md5_OBJECTS) $(bench_md5_DEPENDENCIES) $(EXTRA_bench_md5_DEPENDENCIES) 
+	@rm -f bench-md5$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(bench_md5_OBJECTS) $(bench_md5_LDADD) $(LIBS)
+
+bench-sha1$(EXEEXT): $(bench_sha1_OBJECTS) $(bench_sha1_DEPENDENCIES) $(EXTRA_bench_sha1_DEPENDENCIES) 
+	@rm -f bench-sha1$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(bench_sha1_OBJECTS) $(bench_sha1_LDADD) $(LIBS)
+
+bench-sha224$(EXEEXT): $(bench_sha224_OBJECTS) $(bench_sha224_DEPENDENCIES) $(EXTRA_bench_sha224_DEPENDENCIES) 
+	@rm -f bench-sha224$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(bench_sha224_OBJECTS) $(bench_sha224_LDADD) $(LIBS)
+
+bench-sha256$(EXEEXT): $(bench_sha256_OBJECTS) $(bench_sha256_DEPENDENCIES) $(EXTRA_bench_sha256_DEPENDENCIES) 
+	@rm -f bench-sha256$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(bench_sha256_OBJECTS) $(bench_sha256_LDADD) $(LIBS)
+
+bench-sha384$(EXEEXT): $(bench_sha384_OBJECTS) $(bench_sha384_DEPENDENCIES) $(EXTRA_bench_sha384_DEPENDENCIES) 
+	@rm -f bench-sha384$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(bench_sha384_OBJECTS) $(bench_sha384_LDADD) $(LIBS)
+
+bench-sha512$(EXEEXT): $(bench_sha512_OBJECTS) $(bench_sha512_DEPENDENCIES) $(EXTRA_bench_sha512_DEPENDENCIES) 
+	@rm -f bench-sha512$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(bench_sha512_OBJECTS) $(bench_sha512_LDADD) $(LIBS)
+
+current-locale$(EXEEXT): $(current_locale_OBJECTS) $(current_locale_DEPENDENCIES) $(EXTRA_current_locale_DEPENDENCIES) 
+	@rm -f current-locale$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(current_locale_OBJECTS) $(current_locale_LDADD) $(LIBS)
+
+test-accept$(EXEEXT): $(test_accept_OBJECTS) $(test_accept_DEPENDENCIES) $(EXTRA_test_accept_DEPENDENCIES) 
+	@rm -f test-accept$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_accept_OBJECTS) $(test_accept_LDADD) $(LIBS)
+
+test-alignof$(EXEEXT): $(test_alignof_OBJECTS) $(test_alignof_DEPENDENCIES) $(EXTRA_test_alignof_DEPENDENCIES) 
+	@rm -f test-alignof$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_alignof_OBJECTS) $(test_alignof_LDADD) $(LIBS)
+
+test-alloca-opt$(EXEEXT): $(test_alloca_opt_OBJECTS) $(test_alloca_opt_DEPENDENCIES) $(EXTRA_test_alloca_opt_DEPENDENCIES) 
+	@rm -f test-alloca-opt$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_alloca_opt_OBJECTS) $(test_alloca_opt_LDADD) $(LIBS)
+
+test-areadlink$(EXEEXT): $(test_areadlink_OBJECTS) $(test_areadlink_DEPENDENCIES) $(EXTRA_test_areadlink_DEPENDENCIES) 
+	@rm -f test-areadlink$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_areadlink_OBJECTS) $(test_areadlink_LDADD) $(LIBS)
+
+test-areadlink-with-size$(EXEEXT): $(test_areadlink_with_size_OBJECTS) $(test_areadlink_with_size_DEPENDENCIES) $(EXTRA_test_areadlink_with_size_DEPENDENCIES) 
+	@rm -f test-areadlink-with-size$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_areadlink_with_size_OBJECTS) $(test_areadlink_with_size_LDADD) $(LIBS)
+
+test-areadlinkat$(EXEEXT): $(test_areadlinkat_OBJECTS) $(test_areadlinkat_DEPENDENCIES) $(EXTRA_test_areadlinkat_DEPENDENCIES) 
+	@rm -f test-areadlinkat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_areadlinkat_OBJECTS) $(test_areadlinkat_LDADD) $(LIBS)
+
+test-argmatch$(EXEEXT): $(test_argmatch_OBJECTS) $(test_argmatch_DEPENDENCIES) $(EXTRA_test_argmatch_DEPENDENCIES) 
+	@rm -f test-argmatch$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_argmatch_OBJECTS) $(test_argmatch_LDADD) $(LIBS)
+
+test-argv-iter$(EXEEXT): $(test_argv_iter_OBJECTS) $(test_argv_iter_DEPENDENCIES) $(EXTRA_test_argv_iter_DEPENDENCIES) 
+	@rm -f test-argv-iter$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_argv_iter_OBJECTS) $(test_argv_iter_LDADD) $(LIBS)
+
+test-arpa_inet$(EXEEXT): $(test_arpa_inet_OBJECTS) $(test_arpa_inet_DEPENDENCIES) $(EXTRA_test_arpa_inet_DEPENDENCIES) 
+	@rm -f test-arpa_inet$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_arpa_inet_OBJECTS) $(test_arpa_inet_LDADD) $(LIBS)
+
+test-base32$(EXEEXT): $(test_base32_OBJECTS) $(test_base32_DEPENDENCIES) $(EXTRA_test_base32_DEPENDENCIES) 
+	@rm -f test-base32$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_base32_OBJECTS) $(test_base32_LDADD) $(LIBS)
+
+test-base64$(EXEEXT): $(test_base64_OBJECTS) $(test_base64_DEPENDENCIES) $(EXTRA_test_base64_DEPENDENCIES) 
+	@rm -f test-base64$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_base64_OBJECTS) $(test_base64_LDADD) $(LIBS)
+
+test-binary-io$(EXEEXT): $(test_binary_io_OBJECTS) $(test_binary_io_DEPENDENCIES) $(EXTRA_test_binary_io_DEPENDENCIES) 
+	@rm -f test-binary-io$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_binary_io_OBJECTS) $(test_binary_io_LDADD) $(LIBS)
+
+test-bind$(EXEEXT): $(test_bind_OBJECTS) $(test_bind_DEPENDENCIES) $(EXTRA_test_bind_DEPENDENCIES) 
+	@rm -f test-bind$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_bind_OBJECTS) $(test_bind_LDADD) $(LIBS)
+
+test-bitrotate$(EXEEXT): $(test_bitrotate_OBJECTS) $(test_bitrotate_DEPENDENCIES) $(EXTRA_test_bitrotate_DEPENDENCIES) 
+	@rm -f test-bitrotate$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_bitrotate_OBJECTS) $(test_bitrotate_LDADD) $(LIBS)
+
+test-btowc$(EXEEXT): $(test_btowc_OBJECTS) $(test_btowc_DEPENDENCIES) $(EXTRA_test_btowc_DEPENDENCIES) 
+	@rm -f test-btowc$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_btowc_OBJECTS) $(test_btowc_LDADD) $(LIBS)
+
+test-byteswap$(EXEEXT): $(test_byteswap_OBJECTS) $(test_byteswap_DEPENDENCIES) $(EXTRA_test_byteswap_DEPENDENCIES) 
+	@rm -f test-byteswap$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_byteswap_OBJECTS) $(test_byteswap_LDADD) $(LIBS)
+
+test-c-ctype$(EXEEXT): $(test_c_ctype_OBJECTS) $(test_c_ctype_DEPENDENCIES) $(EXTRA_test_c_ctype_DEPENDENCIES) 
+	@rm -f test-c-ctype$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_c_ctype_OBJECTS) $(test_c_ctype_LDADD) $(LIBS)
+
+test-c-strcasecmp$(EXEEXT): $(test_c_strcasecmp_OBJECTS) $(test_c_strcasecmp_DEPENDENCIES) $(EXTRA_test_c_strcasecmp_DEPENDENCIES) 
+	@rm -f test-c-strcasecmp$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_c_strcasecmp_OBJECTS) $(test_c_strcasecmp_LDADD) $(LIBS)
+
+test-c-strncasecmp$(EXEEXT): $(test_c_strncasecmp_OBJECTS) $(test_c_strncasecmp_DEPENDENCIES) $(EXTRA_test_c_strncasecmp_DEPENDENCIES) 
+	@rm -f test-c-strncasecmp$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_c_strncasecmp_OBJECTS) $(test_c_strncasecmp_LDADD) $(LIBS)
+
+test-calloc-gnu$(EXEEXT): $(test_calloc_gnu_OBJECTS) $(test_calloc_gnu_DEPENDENCIES) $(EXTRA_test_calloc_gnu_DEPENDENCIES) 
+	@rm -f test-calloc-gnu$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_calloc_gnu_OBJECTS) $(test_calloc_gnu_LDADD) $(LIBS)
+
+test-canonicalize$(EXEEXT): $(test_canonicalize_OBJECTS) $(test_canonicalize_DEPENDENCIES) $(EXTRA_test_canonicalize_DEPENDENCIES) 
+	@rm -f test-canonicalize$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_canonicalize_OBJECTS) $(test_canonicalize_LDADD) $(LIBS)
+
+test-chdir$(EXEEXT): $(test_chdir_OBJECTS) $(test_chdir_DEPENDENCIES) $(EXTRA_test_chdir_DEPENDENCIES) 
+	@rm -f test-chdir$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_chdir_OBJECTS) $(test_chdir_LDADD) $(LIBS)
+
+test-chown$(EXEEXT): $(test_chown_OBJECTS) $(test_chown_DEPENDENCIES) $(EXTRA_test_chown_DEPENDENCIES) 
+	@rm -f test-chown$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_chown_OBJECTS) $(test_chown_LDADD) $(LIBS)
+
+test-cloexec$(EXEEXT): $(test_cloexec_OBJECTS) $(test_cloexec_DEPENDENCIES) $(EXTRA_test_cloexec_DEPENDENCIES) 
+	@rm -f test-cloexec$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_cloexec_OBJECTS) $(test_cloexec_LDADD) $(LIBS)
+
+test-close$(EXEEXT): $(test_close_OBJECTS) $(test_close_DEPENDENCIES) $(EXTRA_test_close_DEPENDENCIES) 
+	@rm -f test-close$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_close_OBJECTS) $(test_close_LDADD) $(LIBS)
+
+test-closein$(EXEEXT): $(test_closein_OBJECTS) $(test_closein_DEPENDENCIES) $(EXTRA_test_closein_DEPENDENCIES) 
+	@rm -f test-closein$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_closein_OBJECTS) $(test_closein_LDADD) $(LIBS)
+
+test-connect$(EXEEXT): $(test_connect_OBJECTS) $(test_connect_DEPENDENCIES) $(EXTRA_test_connect_DEPENDENCIES) 
+	@rm -f test-connect$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_connect_OBJECTS) $(test_connect_LDADD) $(LIBS)
+
+test-copy-acl$(EXEEXT): $(test_copy_acl_OBJECTS) $(test_copy_acl_DEPENDENCIES) $(EXTRA_test_copy_acl_DEPENDENCIES) 
+	@rm -f test-copy-acl$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_copy_acl_OBJECTS) $(test_copy_acl_LDADD) $(LIBS)
+
+test-count-leading-zeros$(EXEEXT): $(test_count_leading_zeros_OBJECTS) $(test_count_leading_zeros_DEPENDENCIES) $(EXTRA_test_count_leading_zeros_DEPENDENCIES) 
+	@rm -f test-count-leading-zeros$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_count_leading_zeros_OBJECTS) $(test_count_leading_zeros_LDADD) $(LIBS)
+
+test-ctype$(EXEEXT): $(test_ctype_OBJECTS) $(test_ctype_DEPENDENCIES) $(EXTRA_test_ctype_DEPENDENCIES) 
+	@rm -f test-ctype$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_ctype_OBJECTS) $(test_ctype_LDADD) $(LIBS)
+
+test-di-set$(EXEEXT): $(test_di_set_OBJECTS) $(test_di_set_DEPENDENCIES) $(EXTRA_test_di_set_DEPENDENCIES) 
+	@rm -f test-di-set$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_di_set_OBJECTS) $(test_di_set_LDADD) $(LIBS)
+
+test-dirent$(EXEEXT): $(test_dirent_OBJECTS) $(test_dirent_DEPENDENCIES) $(EXTRA_test_dirent_DEPENDENCIES) 
+	@rm -f test-dirent$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_dirent_OBJECTS) $(test_dirent_LDADD) $(LIBS)
+
+test-dirent-safer$(EXEEXT): $(test_dirent_safer_OBJECTS) $(test_dirent_safer_DEPENDENCIES) $(EXTRA_test_dirent_safer_DEPENDENCIES) 
+	@rm -f test-dirent-safer$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_dirent_safer_OBJECTS) $(test_dirent_safer_LDADD) $(LIBS)
+
+test-dirname$(EXEEXT): $(test_dirname_OBJECTS) $(test_dirname_DEPENDENCIES) $(EXTRA_test_dirname_DEPENDENCIES) 
+	@rm -f test-dirname$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_dirname_OBJECTS) $(test_dirname_LDADD) $(LIBS)
+
+test-dup$(EXEEXT): $(test_dup_OBJECTS) $(test_dup_DEPENDENCIES) $(EXTRA_test_dup_DEPENDENCIES) 
+	@rm -f test-dup$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_dup_OBJECTS) $(test_dup_LDADD) $(LIBS)
+
+test-dup-safer$(EXEEXT): $(test_dup_safer_OBJECTS) $(test_dup_safer_DEPENDENCIES) $(EXTRA_test_dup_safer_DEPENDENCIES) 
+	@rm -f test-dup-safer$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_dup_safer_OBJECTS) $(test_dup_safer_LDADD) $(LIBS)
+
+test-dup2$(EXEEXT): $(test_dup2_OBJECTS) $(test_dup2_DEPENDENCIES) $(EXTRA_test_dup2_DEPENDENCIES) 
+	@rm -f test-dup2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_dup2_OBJECTS) $(test_dup2_LDADD) $(LIBS)
+
+test-environ$(EXEEXT): $(test_environ_OBJECTS) $(test_environ_DEPENDENCIES) $(EXTRA_test_environ_DEPENDENCIES) 
+	@rm -f test-environ$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_environ_OBJECTS) $(test_environ_LDADD) $(LIBS)
+
+test-errno$(EXEEXT): $(test_errno_OBJECTS) $(test_errno_DEPENDENCIES) $(EXTRA_test_errno_DEPENDENCIES) 
+	@rm -f test-errno$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_errno_OBJECTS) $(test_errno_LDADD) $(LIBS)
+
+test-exclude$(EXEEXT): $(test_exclude_OBJECTS) $(test_exclude_DEPENDENCIES) $(EXTRA_test_exclude_DEPENDENCIES) 
+	@rm -f test-exclude$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_exclude_OBJECTS) $(test_exclude_LDADD) $(LIBS)
+
+test-faccessat$(EXEEXT): $(test_faccessat_OBJECTS) $(test_faccessat_DEPENDENCIES) $(EXTRA_test_faccessat_DEPENDENCIES) 
+	@rm -f test-faccessat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_faccessat_OBJECTS) $(test_faccessat_LDADD) $(LIBS)
+
+test-fadvise$(EXEEXT): $(test_fadvise_OBJECTS) $(test_fadvise_DEPENDENCIES) $(EXTRA_test_fadvise_DEPENDENCIES) 
+	@rm -f test-fadvise$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fadvise_OBJECTS) $(test_fadvise_LDADD) $(LIBS)
+
+test-fchdir$(EXEEXT): $(test_fchdir_OBJECTS) $(test_fchdir_DEPENDENCIES) $(EXTRA_test_fchdir_DEPENDENCIES) 
+	@rm -f test-fchdir$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fchdir_OBJECTS) $(test_fchdir_LDADD) $(LIBS)
+
+test-fchmodat$(EXEEXT): $(test_fchmodat_OBJECTS) $(test_fchmodat_DEPENDENCIES) $(EXTRA_test_fchmodat_DEPENDENCIES) 
+	@rm -f test-fchmodat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fchmodat_OBJECTS) $(test_fchmodat_LDADD) $(LIBS)
+
+test-fchownat$(EXEEXT): $(test_fchownat_OBJECTS) $(test_fchownat_DEPENDENCIES) $(EXTRA_test_fchownat_DEPENDENCIES) 
+	@rm -f test-fchownat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fchownat_OBJECTS) $(test_fchownat_LDADD) $(LIBS)
+
+test-fclose$(EXEEXT): $(test_fclose_OBJECTS) $(test_fclose_DEPENDENCIES) $(EXTRA_test_fclose_DEPENDENCIES) 
+	@rm -f test-fclose$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fclose_OBJECTS) $(test_fclose_LDADD) $(LIBS)
+
+test-fcntl$(EXEEXT): $(test_fcntl_OBJECTS) $(test_fcntl_DEPENDENCIES) $(EXTRA_test_fcntl_DEPENDENCIES) 
+	@rm -f test-fcntl$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fcntl_OBJECTS) $(test_fcntl_LDADD) $(LIBS)
+
+test-fcntl-h$(EXEEXT): $(test_fcntl_h_OBJECTS) $(test_fcntl_h_DEPENDENCIES) $(EXTRA_test_fcntl_h_DEPENDENCIES) 
+	@rm -f test-fcntl-h$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fcntl_h_OBJECTS) $(test_fcntl_h_LDADD) $(LIBS)
+
+test-fcntl-safer$(EXEEXT): $(test_fcntl_safer_OBJECTS) $(test_fcntl_safer_DEPENDENCIES) $(EXTRA_test_fcntl_safer_DEPENDENCIES) 
+	@rm -f test-fcntl-safer$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fcntl_safer_OBJECTS) $(test_fcntl_safer_LDADD) $(LIBS)
+
+test-fdatasync$(EXEEXT): $(test_fdatasync_OBJECTS) $(test_fdatasync_DEPENDENCIES) $(EXTRA_test_fdatasync_DEPENDENCIES) 
+	@rm -f test-fdatasync$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fdatasync_OBJECTS) $(test_fdatasync_LDADD) $(LIBS)
+
+test-fdopen$(EXEEXT): $(test_fdopen_OBJECTS) $(test_fdopen_DEPENDENCIES) $(EXTRA_test_fdopen_DEPENDENCIES) 
+	@rm -f test-fdopen$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fdopen_OBJECTS) $(test_fdopen_LDADD) $(LIBS)
+
+test-fdopendir$(EXEEXT): $(test_fdopendir_OBJECTS) $(test_fdopendir_DEPENDENCIES) $(EXTRA_test_fdopendir_DEPENDENCIES) 
+	@rm -f test-fdopendir$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fdopendir_OBJECTS) $(test_fdopendir_LDADD) $(LIBS)
+
+test-fdutimensat$(EXEEXT): $(test_fdutimensat_OBJECTS) $(test_fdutimensat_DEPENDENCIES) $(EXTRA_test_fdutimensat_DEPENDENCIES) 
+	@rm -f test-fdutimensat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fdutimensat_OBJECTS) $(test_fdutimensat_LDADD) $(LIBS)
+
+test-fflush$(EXEEXT): $(test_fflush_OBJECTS) $(test_fflush_DEPENDENCIES) $(EXTRA_test_fflush_DEPENDENCIES) 
+	@rm -f test-fflush$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fflush_OBJECTS) $(test_fflush_LDADD) $(LIBS)
+
+test-fflush2$(EXEEXT): $(test_fflush2_OBJECTS) $(test_fflush2_DEPENDENCIES) $(EXTRA_test_fflush2_DEPENDENCIES) 
+	@rm -f test-fflush2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fflush2_OBJECTS) $(test_fflush2_LDADD) $(LIBS)
+
+test-fgetc$(EXEEXT): $(test_fgetc_OBJECTS) $(test_fgetc_DEPENDENCIES) $(EXTRA_test_fgetc_DEPENDENCIES) 
+	@rm -f test-fgetc$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fgetc_OBJECTS) $(test_fgetc_LDADD) $(LIBS)
+
+test-file-has-acl$(EXEEXT): $(test_file_has_acl_OBJECTS) $(test_file_has_acl_DEPENDENCIES) $(EXTRA_test_file_has_acl_DEPENDENCIES) 
+	@rm -f test-file-has-acl$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_file_has_acl_OBJECTS) $(test_file_has_acl_LDADD) $(LIBS)
+
+test-filenamecat$(EXEEXT): $(test_filenamecat_OBJECTS) $(test_filenamecat_DEPENDENCIES) $(EXTRA_test_filenamecat_DEPENDENCIES) 
+	@rm -f test-filenamecat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_filenamecat_OBJECTS) $(test_filenamecat_LDADD) $(LIBS)
+
+test-filevercmp$(EXEEXT): $(test_filevercmp_OBJECTS) $(test_filevercmp_DEPENDENCIES) $(EXTRA_test_filevercmp_DEPENDENCIES) 
+	@rm -f test-filevercmp$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_filevercmp_OBJECTS) $(test_filevercmp_LDADD) $(LIBS)
+
+test-float$(EXEEXT): $(test_float_OBJECTS) $(test_float_DEPENDENCIES) $(EXTRA_test_float_DEPENDENCIES) 
+	@rm -f test-float$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_float_OBJECTS) $(test_float_LDADD) $(LIBS)
+
+test-fnmatch$(EXEEXT): $(test_fnmatch_OBJECTS) $(test_fnmatch_DEPENDENCIES) $(EXTRA_test_fnmatch_DEPENDENCIES) 
+	@rm -f test-fnmatch$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fnmatch_OBJECTS) $(test_fnmatch_LDADD) $(LIBS)
+
+test-fnmatch-h$(EXEEXT): $(test_fnmatch_h_OBJECTS) $(test_fnmatch_h_DEPENDENCIES) $(EXTRA_test_fnmatch_h_DEPENDENCIES) 
+	@rm -f test-fnmatch-h$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fnmatch_h_OBJECTS) $(test_fnmatch_h_LDADD) $(LIBS)
+
+test-fopen$(EXEEXT): $(test_fopen_OBJECTS) $(test_fopen_DEPENDENCIES) $(EXTRA_test_fopen_DEPENDENCIES) 
+	@rm -f test-fopen$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fopen_OBJECTS) $(test_fopen_LDADD) $(LIBS)
+
+test-fopen-safer$(EXEEXT): $(test_fopen_safer_OBJECTS) $(test_fopen_safer_DEPENDENCIES) $(EXTRA_test_fopen_safer_DEPENDENCIES) 
+	@rm -f test-fopen-safer$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fopen_safer_OBJECTS) $(test_fopen_safer_LDADD) $(LIBS)
+
+test-fpending$(EXEEXT): $(test_fpending_OBJECTS) $(test_fpending_DEPENDENCIES) $(EXTRA_test_fpending_DEPENDENCIES) 
+	@rm -f test-fpending$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fpending_OBJECTS) $(test_fpending_LDADD) $(LIBS)
+
+test-fpurge$(EXEEXT): $(test_fpurge_OBJECTS) $(test_fpurge_DEPENDENCIES) $(EXTRA_test_fpurge_DEPENDENCIES) 
+	@rm -f test-fpurge$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fpurge_OBJECTS) $(test_fpurge_LDADD) $(LIBS)
+
+test-fputc$(EXEEXT): $(test_fputc_OBJECTS) $(test_fputc_DEPENDENCIES) $(EXTRA_test_fputc_DEPENDENCIES) 
+	@rm -f test-fputc$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fputc_OBJECTS) $(test_fputc_LDADD) $(LIBS)
+
+test-fread$(EXEEXT): $(test_fread_OBJECTS) $(test_fread_DEPENDENCIES) $(EXTRA_test_fread_DEPENDENCIES) 
+	@rm -f test-fread$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fread_OBJECTS) $(test_fread_LDADD) $(LIBS)
+
+test-freadahead$(EXEEXT): $(test_freadahead_OBJECTS) $(test_freadahead_DEPENDENCIES) $(EXTRA_test_freadahead_DEPENDENCIES) 
+	@rm -f test-freadahead$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_freadahead_OBJECTS) $(test_freadahead_LDADD) $(LIBS)
+
+test-freading$(EXEEXT): $(test_freading_OBJECTS) $(test_freading_DEPENDENCIES) $(EXTRA_test_freading_DEPENDENCIES) 
+	@rm -f test-freading$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_freading_OBJECTS) $(test_freading_LDADD) $(LIBS)
+
+test-freadptr$(EXEEXT): $(test_freadptr_OBJECTS) $(test_freadptr_DEPENDENCIES) $(EXTRA_test_freadptr_DEPENDENCIES) 
+	@rm -f test-freadptr$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_freadptr_OBJECTS) $(test_freadptr_LDADD) $(LIBS)
+
+test-freadptr2$(EXEEXT): $(test_freadptr2_OBJECTS) $(test_freadptr2_DEPENDENCIES) $(EXTRA_test_freadptr2_DEPENDENCIES) 
+	@rm -f test-freadptr2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_freadptr2_OBJECTS) $(test_freadptr2_LDADD) $(LIBS)
+
+test-freadseek$(EXEEXT): $(test_freadseek_OBJECTS) $(test_freadseek_DEPENDENCIES) $(EXTRA_test_freadseek_DEPENDENCIES) 
+	@rm -f test-freadseek$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_freadseek_OBJECTS) $(test_freadseek_LDADD) $(LIBS)
+
+test-freopen$(EXEEXT): $(test_freopen_OBJECTS) $(test_freopen_DEPENDENCIES) $(EXTRA_test_freopen_DEPENDENCIES) 
+	@rm -f test-freopen$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_freopen_OBJECTS) $(test_freopen_LDADD) $(LIBS)
+
+test-freopen-safer$(EXEEXT): $(test_freopen_safer_OBJECTS) $(test_freopen_safer_DEPENDENCIES) $(EXTRA_test_freopen_safer_DEPENDENCIES) 
+	@rm -f test-freopen-safer$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_freopen_safer_OBJECTS) $(test_freopen_safer_LDADD) $(LIBS)
+
+test-frexp-nolibm$(EXEEXT): $(test_frexp_nolibm_OBJECTS) $(test_frexp_nolibm_DEPENDENCIES) $(EXTRA_test_frexp_nolibm_DEPENDENCIES) 
+	@rm -f test-frexp-nolibm$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_frexp_nolibm_OBJECTS) $(test_frexp_nolibm_LDADD) $(LIBS)
+
+test-frexpl-nolibm$(EXEEXT): $(test_frexpl_nolibm_OBJECTS) $(test_frexpl_nolibm_DEPENDENCIES) $(EXTRA_test_frexpl_nolibm_DEPENDENCIES) 
+	@rm -f test-frexpl-nolibm$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_frexpl_nolibm_OBJECTS) $(test_frexpl_nolibm_LDADD) $(LIBS)
+
+test-fseek$(EXEEXT): $(test_fseek_OBJECTS) $(test_fseek_DEPENDENCIES) $(EXTRA_test_fseek_DEPENDENCIES) 
+	@rm -f test-fseek$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fseek_OBJECTS) $(test_fseek_LDADD) $(LIBS)
+
+test-fseeko$(EXEEXT): $(test_fseeko_OBJECTS) $(test_fseeko_DEPENDENCIES) $(EXTRA_test_fseeko_DEPENDENCIES) 
+	@rm -f test-fseeko$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fseeko_OBJECTS) $(test_fseeko_LDADD) $(LIBS)
+
+test-fseeko3$(EXEEXT): $(test_fseeko3_OBJECTS) $(test_fseeko3_DEPENDENCIES) $(EXTRA_test_fseeko3_DEPENDENCIES) 
+	@rm -f test-fseeko3$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fseeko3_OBJECTS) $(test_fseeko3_LDADD) $(LIBS)
+
+test-fseeko4$(EXEEXT): $(test_fseeko4_OBJECTS) $(test_fseeko4_DEPENDENCIES) $(EXTRA_test_fseeko4_DEPENDENCIES) 
+	@rm -f test-fseeko4$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fseeko4_OBJECTS) $(test_fseeko4_LDADD) $(LIBS)
+
+test-fseterr$(EXEEXT): $(test_fseterr_OBJECTS) $(test_fseterr_DEPENDENCIES) $(EXTRA_test_fseterr_DEPENDENCIES) 
+	@rm -f test-fseterr$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fseterr_OBJECTS) $(test_fseterr_LDADD) $(LIBS)
+
+test-fstat$(EXEEXT): $(test_fstat_OBJECTS) $(test_fstat_DEPENDENCIES) $(EXTRA_test_fstat_DEPENDENCIES) 
+	@rm -f test-fstat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fstat_OBJECTS) $(test_fstat_LDADD) $(LIBS)
+
+test-fstatat$(EXEEXT): $(test_fstatat_OBJECTS) $(test_fstatat_DEPENDENCIES) $(EXTRA_test_fstatat_DEPENDENCIES) 
+	@rm -f test-fstatat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fstatat_OBJECTS) $(test_fstatat_LDADD) $(LIBS)
+
+test-fsync$(EXEEXT): $(test_fsync_OBJECTS) $(test_fsync_DEPENDENCIES) $(EXTRA_test_fsync_DEPENDENCIES) 
+	@rm -f test-fsync$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fsync_OBJECTS) $(test_fsync_LDADD) $(LIBS)
+
+test-ftell$(EXEEXT): $(test_ftell_OBJECTS) $(test_ftell_DEPENDENCIES) $(EXTRA_test_ftell_DEPENDENCIES) 
+	@rm -f test-ftell$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_ftell_OBJECTS) $(test_ftell_LDADD) $(LIBS)
+
+test-ftell3$(EXEEXT): $(test_ftell3_OBJECTS) $(test_ftell3_DEPENDENCIES) $(EXTRA_test_ftell3_DEPENDENCIES) 
+	@rm -f test-ftell3$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_ftell3_OBJECTS) $(test_ftell3_LDADD) $(LIBS)
+
+test-ftello$(EXEEXT): $(test_ftello_OBJECTS) $(test_ftello_DEPENDENCIES) $(EXTRA_test_ftello_DEPENDENCIES) 
+	@rm -f test-ftello$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_ftello_OBJECTS) $(test_ftello_LDADD) $(LIBS)
+
+test-ftello3$(EXEEXT): $(test_ftello3_OBJECTS) $(test_ftello3_DEPENDENCIES) $(EXTRA_test_ftello3_DEPENDENCIES) 
+	@rm -f test-ftello3$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_ftello3_OBJECTS) $(test_ftello3_LDADD) $(LIBS)
+
+test-ftello4$(EXEEXT): $(test_ftello4_OBJECTS) $(test_ftello4_DEPENDENCIES) $(EXTRA_test_ftello4_DEPENDENCIES) 
+	@rm -f test-ftello4$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_ftello4_OBJECTS) $(test_ftello4_LDADD) $(LIBS)
+
+test-ftruncate$(EXEEXT): $(test_ftruncate_OBJECTS) $(test_ftruncate_DEPENDENCIES) $(EXTRA_test_ftruncate_DEPENDENCIES) 
+	@rm -f test-ftruncate$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_ftruncate_OBJECTS) $(test_ftruncate_LDADD) $(LIBS)
+
+test-futimens$(EXEEXT): $(test_futimens_OBJECTS) $(test_futimens_DEPENDENCIES) $(EXTRA_test_futimens_DEPENDENCIES) 
+	@rm -f test-futimens$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_futimens_OBJECTS) $(test_futimens_LDADD) $(LIBS)
+
+test-fwrite$(EXEEXT): $(test_fwrite_OBJECTS) $(test_fwrite_DEPENDENCIES) $(EXTRA_test_fwrite_DEPENDENCIES) 
+	@rm -f test-fwrite$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fwrite_OBJECTS) $(test_fwrite_LDADD) $(LIBS)
+
+test-getaddrinfo$(EXEEXT): $(test_getaddrinfo_OBJECTS) $(test_getaddrinfo_DEPENDENCIES) $(EXTRA_test_getaddrinfo_DEPENDENCIES) 
+	@rm -f test-getaddrinfo$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getaddrinfo_OBJECTS) $(test_getaddrinfo_LDADD) $(LIBS)
+
+test-getcwd$(EXEEXT): $(test_getcwd_OBJECTS) $(test_getcwd_DEPENDENCIES) $(EXTRA_test_getcwd_DEPENDENCIES) 
+	@rm -f test-getcwd$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getcwd_OBJECTS) $(test_getcwd_LDADD) $(LIBS)
+
+test-getcwd-lgpl$(EXEEXT): $(test_getcwd_lgpl_OBJECTS) $(test_getcwd_lgpl_DEPENDENCIES) $(EXTRA_test_getcwd_lgpl_DEPENDENCIES) 
+	@rm -f test-getcwd-lgpl$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getcwd_lgpl_OBJECTS) $(test_getcwd_lgpl_LDADD) $(LIBS)
+
+test-getdelim$(EXEEXT): $(test_getdelim_OBJECTS) $(test_getdelim_DEPENDENCIES) $(EXTRA_test_getdelim_DEPENDENCIES) 
+	@rm -f test-getdelim$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getdelim_OBJECTS) $(test_getdelim_LDADD) $(LIBS)
+
+test-getdtablesize$(EXEEXT): $(test_getdtablesize_OBJECTS) $(test_getdtablesize_DEPENDENCIES) $(EXTRA_test_getdtablesize_DEPENDENCIES) 
+	@rm -f test-getdtablesize$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getdtablesize_OBJECTS) $(test_getdtablesize_LDADD) $(LIBS)
+
+test-getgroups$(EXEEXT): $(test_getgroups_OBJECTS) $(test_getgroups_DEPENDENCIES) $(EXTRA_test_getgroups_DEPENDENCIES) 
+	@rm -f test-getgroups$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getgroups_OBJECTS) $(test_getgroups_LDADD) $(LIBS)
+
+test-gethostname$(EXEEXT): $(test_gethostname_OBJECTS) $(test_gethostname_DEPENDENCIES) $(EXTRA_test_gethostname_DEPENDENCIES) 
+	@rm -f test-gethostname$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_gethostname_OBJECTS) $(test_gethostname_LDADD) $(LIBS)
+
+test-getline$(EXEEXT): $(test_getline_OBJECTS) $(test_getline_DEPENDENCIES) $(EXTRA_test_getline_DEPENDENCIES) 
+	@rm -f test-getline$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getline_OBJECTS) $(test_getline_LDADD) $(LIBS)
+
+test-getloadavg$(EXEEXT): $(test_getloadavg_OBJECTS) $(test_getloadavg_DEPENDENCIES) $(EXTRA_test_getloadavg_DEPENDENCIES) 
+	@rm -f test-getloadavg$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getloadavg_OBJECTS) $(test_getloadavg_LDADD) $(LIBS)
+
+test-getlogin$(EXEEXT): $(test_getlogin_OBJECTS) $(test_getlogin_DEPENDENCIES) $(EXTRA_test_getlogin_DEPENDENCIES) 
+	@rm -f test-getlogin$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getlogin_OBJECTS) $(test_getlogin_LDADD) $(LIBS)
+
+test-getndelim2$(EXEEXT): $(test_getndelim2_OBJECTS) $(test_getndelim2_DEPENDENCIES) $(EXTRA_test_getndelim2_DEPENDENCIES) 
+	@rm -f test-getndelim2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getndelim2_OBJECTS) $(test_getndelim2_LDADD) $(LIBS)
+
+test-getopt-gnu$(EXEEXT): $(test_getopt_gnu_OBJECTS) $(test_getopt_gnu_DEPENDENCIES) $(EXTRA_test_getopt_gnu_DEPENDENCIES) 
+	@rm -f test-getopt-gnu$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getopt_gnu_OBJECTS) $(test_getopt_gnu_LDADD) $(LIBS)
+
+test-getopt-posix$(EXEEXT): $(test_getopt_posix_OBJECTS) $(test_getopt_posix_DEPENDENCIES) $(EXTRA_test_getopt_posix_DEPENDENCIES) 
+	@rm -f test-getopt-posix$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getopt_posix_OBJECTS) $(test_getopt_posix_LDADD) $(LIBS)
+
+test-getprogname$(EXEEXT): $(test_getprogname_OBJECTS) $(test_getprogname_DEPENDENCIES) $(EXTRA_test_getprogname_DEPENDENCIES) 
+	@rm -f test-getprogname$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getprogname_OBJECTS) $(test_getprogname_LDADD) $(LIBS)
+
+test-getrusage$(EXEEXT): $(test_getrusage_OBJECTS) $(test_getrusage_DEPENDENCIES) $(EXTRA_test_getrusage_DEPENDENCIES) 
+	@rm -f test-getrusage$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getrusage_OBJECTS) $(test_getrusage_LDADD) $(LIBS)
+
+test-gettimeofday$(EXEEXT): $(test_gettimeofday_OBJECTS) $(test_gettimeofday_DEPENDENCIES) $(EXTRA_test_gettimeofday_DEPENDENCIES) 
+	@rm -f test-gettimeofday$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_gettimeofday_OBJECTS) $(test_gettimeofday_LDADD) $(LIBS)
+
+test-hard-locale$(EXEEXT): $(test_hard_locale_OBJECTS) $(test_hard_locale_DEPENDENCIES) $(EXTRA_test_hard_locale_DEPENDENCIES) 
+	@rm -f test-hard-locale$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_hard_locale_OBJECTS) $(test_hard_locale_LDADD) $(LIBS)
+
+test-hash$(EXEEXT): $(test_hash_OBJECTS) $(test_hash_DEPENDENCIES) $(EXTRA_test_hash_DEPENDENCIES) 
+	@rm -f test-hash$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_hash_OBJECTS) $(test_hash_LDADD) $(LIBS)
+
+test-i-ring$(EXEEXT): $(test_i_ring_OBJECTS) $(test_i_ring_DEPENDENCIES) $(EXTRA_test_i_ring_DEPENDENCIES) 
+	@rm -f test-i-ring$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_i_ring_OBJECTS) $(test_i_ring_LDADD) $(LIBS)
+
+test-iconv$(EXEEXT): $(test_iconv_OBJECTS) $(test_iconv_DEPENDENCIES) $(EXTRA_test_iconv_DEPENDENCIES) 
+	@rm -f test-iconv$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_iconv_OBJECTS) $(test_iconv_LDADD) $(LIBS)
+
+test-iconv-h$(EXEEXT): $(test_iconv_h_OBJECTS) $(test_iconv_h_DEPENDENCIES) $(EXTRA_test_iconv_h_DEPENDENCIES) 
+	@rm -f test-iconv-h$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_iconv_h_OBJECTS) $(test_iconv_h_LDADD) $(LIBS)
+
+test-ignore-value$(EXEEXT): $(test_ignore_value_OBJECTS) $(test_ignore_value_DEPENDENCIES) $(EXTRA_test_ignore_value_DEPENDENCIES) 
+	@rm -f test-ignore-value$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_ignore_value_OBJECTS) $(test_ignore_value_LDADD) $(LIBS)
+
+test-inet_ntop$(EXEEXT): $(test_inet_ntop_OBJECTS) $(test_inet_ntop_DEPENDENCIES) $(EXTRA_test_inet_ntop_DEPENDENCIES) 
+	@rm -f test-inet_ntop$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_inet_ntop_OBJECTS) $(test_inet_ntop_LDADD) $(LIBS)
+
+test-inet_pton$(EXEEXT): $(test_inet_pton_OBJECTS) $(test_inet_pton_DEPENDENCIES) $(EXTRA_test_inet_pton_DEPENDENCIES) 
+	@rm -f test-inet_pton$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_inet_pton_OBJECTS) $(test_inet_pton_LDADD) $(LIBS)
+
+test-ino-map$(EXEEXT): $(test_ino_map_OBJECTS) $(test_ino_map_DEPENDENCIES) $(EXTRA_test_ino_map_DEPENDENCIES) 
+	@rm -f test-ino-map$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_ino_map_OBJECTS) $(test_ino_map_LDADD) $(LIBS)
+
+test-intprops$(EXEEXT): $(test_intprops_OBJECTS) $(test_intprops_DEPENDENCIES) $(EXTRA_test_intprops_DEPENDENCIES) 
+	@rm -f test-intprops$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_intprops_OBJECTS) $(test_intprops_LDADD) $(LIBS)
+
+test-inttostr$(EXEEXT): $(test_inttostr_OBJECTS) $(test_inttostr_DEPENDENCIES) $(EXTRA_test_inttostr_DEPENDENCIES) 
+	@rm -f test-inttostr$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_inttostr_OBJECTS) $(test_inttostr_LDADD) $(LIBS)
+
+test-inttypes$(EXEEXT): $(test_inttypes_OBJECTS) $(test_inttypes_DEPENDENCIES) $(EXTRA_test_inttypes_DEPENDENCIES) 
+	@rm -f test-inttypes$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_inttypes_OBJECTS) $(test_inttypes_LDADD) $(LIBS)
+
+test-ioctl$(EXEEXT): $(test_ioctl_OBJECTS) $(test_ioctl_DEPENDENCIES) $(EXTRA_test_ioctl_DEPENDENCIES) 
+	@rm -f test-ioctl$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_ioctl_OBJECTS) $(test_ioctl_LDADD) $(LIBS)
+
+test-isatty$(EXEEXT): $(test_isatty_OBJECTS) $(test_isatty_DEPENDENCIES) $(EXTRA_test_isatty_DEPENDENCIES) 
+	@rm -f test-isatty$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_isatty_OBJECTS) $(test_isatty_LDADD) $(LIBS)
+
+test-isblank$(EXEEXT): $(test_isblank_OBJECTS) $(test_isblank_DEPENDENCIES) $(EXTRA_test_isblank_DEPENDENCIES) 
+	@rm -f test-isblank$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_isblank_OBJECTS) $(test_isblank_LDADD) $(LIBS)
+
+test-isnand-nolibm$(EXEEXT): $(test_isnand_nolibm_OBJECTS) $(test_isnand_nolibm_DEPENDENCIES) $(EXTRA_test_isnand_nolibm_DEPENDENCIES) 
+	@rm -f test-isnand-nolibm$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_isnand_nolibm_OBJECTS) $(test_isnand_nolibm_LDADD) $(LIBS)
+
+test-isnanf-nolibm$(EXEEXT): $(test_isnanf_nolibm_OBJECTS) $(test_isnanf_nolibm_DEPENDENCIES) $(EXTRA_test_isnanf_nolibm_DEPENDENCIES) 
+	@rm -f test-isnanf-nolibm$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_isnanf_nolibm_OBJECTS) $(test_isnanf_nolibm_LDADD) $(LIBS)
+
+test-isnanl-nolibm$(EXEEXT): $(test_isnanl_nolibm_OBJECTS) $(test_isnanl_nolibm_DEPENDENCIES) $(EXTRA_test_isnanl_nolibm_DEPENDENCIES) 
+	@rm -f test-isnanl-nolibm$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_isnanl_nolibm_OBJECTS) $(test_isnanl_nolibm_LDADD) $(LIBS)
+
+test-iswblank$(EXEEXT): $(test_iswblank_OBJECTS) $(test_iswblank_DEPENDENCIES) $(EXTRA_test_iswblank_DEPENDENCIES) 
+	@rm -f test-iswblank$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_iswblank_OBJECTS) $(test_iswblank_LDADD) $(LIBS)
+
+test-iswdigit$(EXEEXT): $(test_iswdigit_OBJECTS) $(test_iswdigit_DEPENDENCIES) $(EXTRA_test_iswdigit_DEPENDENCIES) 
+	@rm -f test-iswdigit$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_iswdigit_OBJECTS) $(test_iswdigit_LDADD) $(LIBS)
+
+test-iswxdigit$(EXEEXT): $(test_iswxdigit_OBJECTS) $(test_iswxdigit_DEPENDENCIES) $(EXTRA_test_iswxdigit_DEPENDENCIES) 
+	@rm -f test-iswxdigit$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_iswxdigit_OBJECTS) $(test_iswxdigit_LDADD) $(LIBS)
+
+test-langinfo$(EXEEXT): $(test_langinfo_OBJECTS) $(test_langinfo_DEPENDENCIES) $(EXTRA_test_langinfo_DEPENDENCIES) 
+	@rm -f test-langinfo$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_langinfo_OBJECTS) $(test_langinfo_LDADD) $(LIBS)
+
+test-lchmod$(EXEEXT): $(test_lchmod_OBJECTS) $(test_lchmod_DEPENDENCIES) $(EXTRA_test_lchmod_DEPENDENCIES) 
+	@rm -f test-lchmod$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_lchmod_OBJECTS) $(test_lchmod_LDADD) $(LIBS)
+
+test-lchown$(EXEEXT): $(test_lchown_OBJECTS) $(test_lchown_DEPENDENCIES) $(EXTRA_test_lchown_DEPENDENCIES) 
+	@rm -f test-lchown$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_lchown_OBJECTS) $(test_lchown_LDADD) $(LIBS)
+
+test-limits-h$(EXEEXT): $(test_limits_h_OBJECTS) $(test_limits_h_DEPENDENCIES) $(EXTRA_test_limits_h_DEPENDENCIES) 
+	@rm -f test-limits-h$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_limits_h_OBJECTS) $(test_limits_h_LDADD) $(LIBS)
+
+test-link$(EXEEXT): $(test_link_OBJECTS) $(test_link_DEPENDENCIES) $(EXTRA_test_link_DEPENDENCIES) 
+	@rm -f test-link$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_link_OBJECTS) $(test_link_LDADD) $(LIBS)
+
+test-linkat$(EXEEXT): $(test_linkat_OBJECTS) $(test_linkat_DEPENDENCIES) $(EXTRA_test_linkat_DEPENDENCIES) 
+	@rm -f test-linkat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_linkat_OBJECTS) $(test_linkat_LDADD) $(LIBS)
+
+test-listen$(EXEEXT): $(test_listen_OBJECTS) $(test_listen_DEPENDENCIES) $(EXTRA_test_listen_DEPENDENCIES) 
+	@rm -f test-listen$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_listen_OBJECTS) $(test_listen_LDADD) $(LIBS)
+
+test-localcharset$(EXEEXT): $(test_localcharset_OBJECTS) $(test_localcharset_DEPENDENCIES) $(EXTRA_test_localcharset_DEPENDENCIES) 
+	@rm -f test-localcharset$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_localcharset_OBJECTS) $(test_localcharset_LDADD) $(LIBS)
+
+test-locale$(EXEEXT): $(test_locale_OBJECTS) $(test_locale_DEPENDENCIES) $(EXTRA_test_locale_DEPENDENCIES) 
+	@rm -f test-locale$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_locale_OBJECTS) $(test_locale_LDADD) $(LIBS)
+
+test-localeconv$(EXEEXT): $(test_localeconv_OBJECTS) $(test_localeconv_DEPENDENCIES) $(EXTRA_test_localeconv_DEPENDENCIES) 
+	@rm -f test-localeconv$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_localeconv_OBJECTS) $(test_localeconv_LDADD) $(LIBS)
+
+test-localename$(EXEEXT): $(test_localename_OBJECTS) $(test_localename_DEPENDENCIES) $(EXTRA_test_localename_DEPENDENCIES) 
+	@rm -f test-localename$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_localename_OBJECTS) $(test_localename_LDADD) $(LIBS)
+
+test-lock$(EXEEXT): $(test_lock_OBJECTS) $(test_lock_DEPENDENCIES) $(EXTRA_test_lock_DEPENDENCIES) 
+	@rm -f test-lock$(EXEEXT)
+	$(AM_V_CCLD)$(test_lock_LINK) $(test_lock_OBJECTS) $(test_lock_LDADD) $(LIBS)
+
+test-lseek$(EXEEXT): $(test_lseek_OBJECTS) $(test_lseek_DEPENDENCIES) $(EXTRA_test_lseek_DEPENDENCIES) 
+	@rm -f test-lseek$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_lseek_OBJECTS) $(test_lseek_LDADD) $(LIBS)
+
+test-lstat$(EXEEXT): $(test_lstat_OBJECTS) $(test_lstat_DEPENDENCIES) $(EXTRA_test_lstat_DEPENDENCIES) 
+	@rm -f test-lstat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_lstat_OBJECTS) $(test_lstat_LDADD) $(LIBS)
+
+test-malloc-gnu$(EXEEXT): $(test_malloc_gnu_OBJECTS) $(test_malloc_gnu_DEPENDENCIES) $(EXTRA_test_malloc_gnu_DEPENDENCIES) 
+	@rm -f test-malloc-gnu$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_malloc_gnu_OBJECTS) $(test_malloc_gnu_LDADD) $(LIBS)
+
+test-malloca$(EXEEXT): $(test_malloca_OBJECTS) $(test_malloca_DEPENDENCIES) $(EXTRA_test_malloca_DEPENDENCIES) 
+	@rm -f test-malloca$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_malloca_OBJECTS) $(test_malloca_LDADD) $(LIBS)
+
+test-math$(EXEEXT): $(test_math_OBJECTS) $(test_math_DEPENDENCIES) $(EXTRA_test_math_DEPENDENCIES) 
+	@rm -f test-math$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_math_OBJECTS) $(test_math_LDADD) $(LIBS)
+
+test-mbrtowc$(EXEEXT): $(test_mbrtowc_OBJECTS) $(test_mbrtowc_DEPENDENCIES) $(EXTRA_test_mbrtowc_DEPENDENCIES) 
+	@rm -f test-mbrtowc$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbrtowc_OBJECTS) $(test_mbrtowc_LDADD) $(LIBS)
+
+test-mbrtowc-w32$(EXEEXT): $(test_mbrtowc_w32_OBJECTS) $(test_mbrtowc_w32_DEPENDENCIES) $(EXTRA_test_mbrtowc_w32_DEPENDENCIES) 
+	@rm -f test-mbrtowc-w32$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbrtowc_w32_OBJECTS) $(test_mbrtowc_w32_LDADD) $(LIBS)
+
+test-mbsalign$(EXEEXT): $(test_mbsalign_OBJECTS) $(test_mbsalign_DEPENDENCIES) $(EXTRA_test_mbsalign_DEPENDENCIES) 
+	@rm -f test-mbsalign$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbsalign_OBJECTS) $(test_mbsalign_LDADD) $(LIBS)
+
+test-mbscasecmp$(EXEEXT): $(test_mbscasecmp_OBJECTS) $(test_mbscasecmp_DEPENDENCIES) $(EXTRA_test_mbscasecmp_DEPENDENCIES) 
+	@rm -f test-mbscasecmp$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbscasecmp_OBJECTS) $(test_mbscasecmp_LDADD) $(LIBS)
+
+test-mbschr$(EXEEXT): $(test_mbschr_OBJECTS) $(test_mbschr_DEPENDENCIES) $(EXTRA_test_mbschr_DEPENDENCIES) 
+	@rm -f test-mbschr$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbschr_OBJECTS) $(test_mbschr_LDADD) $(LIBS)
+
+test-mbsinit$(EXEEXT): $(test_mbsinit_OBJECTS) $(test_mbsinit_DEPENDENCIES) $(EXTRA_test_mbsinit_DEPENDENCIES) 
+	@rm -f test-mbsinit$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbsinit_OBJECTS) $(test_mbsinit_LDADD) $(LIBS)
+
+test-mbsrtowcs$(EXEEXT): $(test_mbsrtowcs_OBJECTS) $(test_mbsrtowcs_DEPENDENCIES) $(EXTRA_test_mbsrtowcs_DEPENDENCIES) 
+	@rm -f test-mbsrtowcs$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbsrtowcs_OBJECTS) $(test_mbsrtowcs_LDADD) $(LIBS)
+
+test-mbsstr1$(EXEEXT): $(test_mbsstr1_OBJECTS) $(test_mbsstr1_DEPENDENCIES) $(EXTRA_test_mbsstr1_DEPENDENCIES) 
+	@rm -f test-mbsstr1$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbsstr1_OBJECTS) $(test_mbsstr1_LDADD) $(LIBS)
+
+test-mbsstr2$(EXEEXT): $(test_mbsstr2_OBJECTS) $(test_mbsstr2_DEPENDENCIES) $(EXTRA_test_mbsstr2_DEPENDENCIES) 
+	@rm -f test-mbsstr2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbsstr2_OBJECTS) $(test_mbsstr2_LDADD) $(LIBS)
+
+test-mbsstr3$(EXEEXT): $(test_mbsstr3_OBJECTS) $(test_mbsstr3_DEPENDENCIES) $(EXTRA_test_mbsstr3_DEPENDENCIES) 
+	@rm -f test-mbsstr3$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbsstr3_OBJECTS) $(test_mbsstr3_LDADD) $(LIBS)
+
+test-md5$(EXEEXT): $(test_md5_OBJECTS) $(test_md5_DEPENDENCIES) $(EXTRA_test_md5_DEPENDENCIES) 
+	@rm -f test-md5$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_md5_OBJECTS) $(test_md5_LDADD) $(LIBS)
+
+test-memcasecmp$(EXEEXT): $(test_memcasecmp_OBJECTS) $(test_memcasecmp_DEPENDENCIES) $(EXTRA_test_memcasecmp_DEPENDENCIES) 
+	@rm -f test-memcasecmp$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_memcasecmp_OBJECTS) $(test_memcasecmp_LDADD) $(LIBS)
+
+test-memchr$(EXEEXT): $(test_memchr_OBJECTS) $(test_memchr_DEPENDENCIES) $(EXTRA_test_memchr_DEPENDENCIES) 
+	@rm -f test-memchr$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_memchr_OBJECTS) $(test_memchr_LDADD) $(LIBS)
+
+test-memchr2$(EXEEXT): $(test_memchr2_OBJECTS) $(test_memchr2_DEPENDENCIES) $(EXTRA_test_memchr2_DEPENDENCIES) 
+	@rm -f test-memchr2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_memchr2_OBJECTS) $(test_memchr2_LDADD) $(LIBS)
+
+test-memcoll$(EXEEXT): $(test_memcoll_OBJECTS) $(test_memcoll_DEPENDENCIES) $(EXTRA_test_memcoll_DEPENDENCIES) 
+	@rm -f test-memcoll$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_memcoll_OBJECTS) $(test_memcoll_LDADD) $(LIBS)
+
+test-memrchr$(EXEEXT): $(test_memrchr_OBJECTS) $(test_memrchr_DEPENDENCIES) $(EXTRA_test_memrchr_DEPENDENCIES) 
+	@rm -f test-memrchr$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_memrchr_OBJECTS) $(test_memrchr_LDADD) $(LIBS)
+
+test-mkdir$(EXEEXT): $(test_mkdir_OBJECTS) $(test_mkdir_DEPENDENCIES) $(EXTRA_test_mkdir_DEPENDENCIES) 
+	@rm -f test-mkdir$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mkdir_OBJECTS) $(test_mkdir_LDADD) $(LIBS)
+
+test-mkfifo$(EXEEXT): $(test_mkfifo_OBJECTS) $(test_mkfifo_DEPENDENCIES) $(EXTRA_test_mkfifo_DEPENDENCIES) 
+	@rm -f test-mkfifo$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mkfifo_OBJECTS) $(test_mkfifo_LDADD) $(LIBS)
+
+test-mknod$(EXEEXT): $(test_mknod_OBJECTS) $(test_mknod_DEPENDENCIES) $(EXTRA_test_mknod_DEPENDENCIES) 
+	@rm -f test-mknod$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mknod_OBJECTS) $(test_mknod_LDADD) $(LIBS)
+
+test-nanosleep$(EXEEXT): $(test_nanosleep_OBJECTS) $(test_nanosleep_DEPENDENCIES) $(EXTRA_test_nanosleep_DEPENDENCIES) 
+	@rm -f test-nanosleep$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_nanosleep_OBJECTS) $(test_nanosleep_LDADD) $(LIBS)
+
+test-netdb$(EXEEXT): $(test_netdb_OBJECTS) $(test_netdb_DEPENDENCIES) $(EXTRA_test_netdb_DEPENDENCIES) 
+	@rm -f test-netdb$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_netdb_OBJECTS) $(test_netdb_LDADD) $(LIBS)
+
+test-netinet_in$(EXEEXT): $(test_netinet_in_OBJECTS) $(test_netinet_in_DEPENDENCIES) $(EXTRA_test_netinet_in_DEPENDENCIES) 
+	@rm -f test-netinet_in$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_netinet_in_OBJECTS) $(test_netinet_in_LDADD) $(LIBS)
+
+test-nl_langinfo$(EXEEXT): $(test_nl_langinfo_OBJECTS) $(test_nl_langinfo_DEPENDENCIES) $(EXTRA_test_nl_langinfo_DEPENDENCIES) 
+	@rm -f test-nl_langinfo$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_nl_langinfo_OBJECTS) $(test_nl_langinfo_LDADD) $(LIBS)
+
+test-nl_langinfo-mt$(EXEEXT): $(test_nl_langinfo_mt_OBJECTS) $(test_nl_langinfo_mt_DEPENDENCIES) $(EXTRA_test_nl_langinfo_mt_DEPENDENCIES) 
+	@rm -f test-nl_langinfo-mt$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_nl_langinfo_mt_OBJECTS) $(test_nl_langinfo_mt_LDADD) $(LIBS)
+
+test-nstrftime$(EXEEXT): $(test_nstrftime_OBJECTS) $(test_nstrftime_DEPENDENCIES) $(EXTRA_test_nstrftime_DEPENDENCIES) 
+	@rm -f test-nstrftime$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_nstrftime_OBJECTS) $(test_nstrftime_LDADD) $(LIBS)
+
+test-once1$(EXEEXT): $(test_once1_OBJECTS) $(test_once1_DEPENDENCIES) $(EXTRA_test_once1_DEPENDENCIES) 
+	@rm -f test-once1$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_once1_OBJECTS) $(test_once1_LDADD) $(LIBS)
+
+test-once2$(EXEEXT): $(test_once2_OBJECTS) $(test_once2_DEPENDENCIES) $(EXTRA_test_once2_DEPENDENCIES) 
+	@rm -f test-once2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_once2_OBJECTS) $(test_once2_LDADD) $(LIBS)
+
+test-open$(EXEEXT): $(test_open_OBJECTS) $(test_open_DEPENDENCIES) $(EXTRA_test_open_DEPENDENCIES) 
+	@rm -f test-open$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_open_OBJECTS) $(test_open_LDADD) $(LIBS)
+
+test-openat$(EXEEXT): $(test_openat_OBJECTS) $(test_openat_DEPENDENCIES) $(EXTRA_test_openat_DEPENDENCIES) 
+	@rm -f test-openat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_openat_OBJECTS) $(test_openat_LDADD) $(LIBS)
+
+test-openat-safer$(EXEEXT): $(test_openat_safer_OBJECTS) $(test_openat_safer_DEPENDENCIES) $(EXTRA_test_openat_safer_DEPENDENCIES) 
+	@rm -f test-openat-safer$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_openat_safer_OBJECTS) $(test_openat_safer_LDADD) $(LIBS)
+
+test-parse-datetime$(EXEEXT): $(test_parse_datetime_OBJECTS) $(test_parse_datetime_DEPENDENCIES) $(EXTRA_test_parse_datetime_DEPENDENCIES) 
+	@rm -f test-parse-datetime$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_parse_datetime_OBJECTS) $(test_parse_datetime_LDADD) $(LIBS)
+
+test-pathmax$(EXEEXT): $(test_pathmax_OBJECTS) $(test_pathmax_DEPENDENCIES) $(EXTRA_test_pathmax_DEPENDENCIES) 
+	@rm -f test-pathmax$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pathmax_OBJECTS) $(test_pathmax_LDADD) $(LIBS)
+
+test-perror$(EXEEXT): $(test_perror_OBJECTS) $(test_perror_DEPENDENCIES) $(EXTRA_test_perror_DEPENDENCIES) 
+	@rm -f test-perror$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_perror_OBJECTS) $(test_perror_LDADD) $(LIBS)
+
+test-perror2$(EXEEXT): $(test_perror2_OBJECTS) $(test_perror2_DEPENDENCIES) $(EXTRA_test_perror2_DEPENDENCIES) 
+	@rm -f test-perror2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_perror2_OBJECTS) $(test_perror2_LDADD) $(LIBS)
+
+test-pipe$(EXEEXT): $(test_pipe_OBJECTS) $(test_pipe_DEPENDENCIES) $(EXTRA_test_pipe_DEPENDENCIES) 
+	@rm -f test-pipe$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pipe_OBJECTS) $(test_pipe_LDADD) $(LIBS)
+
+test-pipe2$(EXEEXT): $(test_pipe2_OBJECTS) $(test_pipe2_DEPENDENCIES) $(EXTRA_test_pipe2_DEPENDENCIES) 
+	@rm -f test-pipe2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pipe2_OBJECTS) $(test_pipe2_LDADD) $(LIBS)
+
+test-posixtm$(EXEEXT): $(test_posixtm_OBJECTS) $(test_posixtm_DEPENDENCIES) $(EXTRA_test_posixtm_DEPENDENCIES) 
+	@rm -f test-posixtm$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_posixtm_OBJECTS) $(test_posixtm_LDADD) $(LIBS)
+
+test-printf-frexp$(EXEEXT): $(test_printf_frexp_OBJECTS) $(test_printf_frexp_DEPENDENCIES) $(EXTRA_test_printf_frexp_DEPENDENCIES) 
+	@rm -f test-printf-frexp$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_printf_frexp_OBJECTS) $(test_printf_frexp_LDADD) $(LIBS)
+
+test-printf-frexpl$(EXEEXT): $(test_printf_frexpl_OBJECTS) $(test_printf_frexpl_DEPENDENCIES) $(EXTRA_test_printf_frexpl_DEPENDENCIES) 
+	@rm -f test-printf-frexpl$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_printf_frexpl_OBJECTS) $(test_printf_frexpl_LDADD) $(LIBS)
+
+test-priv-set$(EXEEXT): $(test_priv_set_OBJECTS) $(test_priv_set_DEPENDENCIES) $(EXTRA_test_priv_set_DEPENDENCIES) 
+	@rm -f test-priv-set$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_priv_set_OBJECTS) $(test_priv_set_LDADD) $(LIBS)
+
+test-pthread$(EXEEXT): $(test_pthread_OBJECTS) $(test_pthread_DEPENDENCIES) $(EXTRA_test_pthread_DEPENDENCIES) 
+	@rm -f test-pthread$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pthread_OBJECTS) $(test_pthread_LDADD) $(LIBS)
+
+test-pthread-cond$(EXEEXT): $(test_pthread_cond_OBJECTS) $(test_pthread_cond_DEPENDENCIES) $(EXTRA_test_pthread_cond_DEPENDENCIES) 
+	@rm -f test-pthread-cond$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pthread_cond_OBJECTS) $(test_pthread_cond_LDADD) $(LIBS)
+
+test-pthread-mutex$(EXEEXT): $(test_pthread_mutex_OBJECTS) $(test_pthread_mutex_DEPENDENCIES) $(EXTRA_test_pthread_mutex_DEPENDENCIES) 
+	@rm -f test-pthread-mutex$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pthread_mutex_OBJECTS) $(test_pthread_mutex_LDADD) $(LIBS)
+
+test-pthread-thread$(EXEEXT): $(test_pthread_thread_OBJECTS) $(test_pthread_thread_DEPENDENCIES) $(EXTRA_test_pthread_thread_DEPENDENCIES) 
+	@rm -f test-pthread-thread$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pthread_thread_OBJECTS) $(test_pthread_thread_LDADD) $(LIBS)
+
+test-pthread_sigmask1$(EXEEXT): $(test_pthread_sigmask1_OBJECTS) $(test_pthread_sigmask1_DEPENDENCIES) $(EXTRA_test_pthread_sigmask1_DEPENDENCIES) 
+	@rm -f test-pthread_sigmask1$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pthread_sigmask1_OBJECTS) $(test_pthread_sigmask1_LDADD) $(LIBS)
+
+test-pthread_sigmask2$(EXEEXT): $(test_pthread_sigmask2_OBJECTS) $(test_pthread_sigmask2_DEPENDENCIES) $(EXTRA_test_pthread_sigmask2_DEPENDENCIES) 
+	@rm -f test-pthread_sigmask2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pthread_sigmask2_OBJECTS) $(test_pthread_sigmask2_LDADD) $(LIBS)
+
+test-quotearg-simple$(EXEEXT): $(test_quotearg_simple_OBJECTS) $(test_quotearg_simple_DEPENDENCIES) $(EXTRA_test_quotearg_simple_DEPENDENCIES) 
+	@rm -f test-quotearg-simple$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_quotearg_simple_OBJECTS) $(test_quotearg_simple_LDADD) $(LIBS)
+
+test-raise$(EXEEXT): $(test_raise_OBJECTS) $(test_raise_DEPENDENCIES) $(EXTRA_test_raise_DEPENDENCIES) 
+	@rm -f test-raise$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_raise_OBJECTS) $(test_raise_LDADD) $(LIBS)
+
+test-rand-isaac$(EXEEXT): $(test_rand_isaac_OBJECTS) $(test_rand_isaac_DEPENDENCIES) $(EXTRA_test_rand_isaac_DEPENDENCIES) 
+	@rm -f test-rand-isaac$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_rand_isaac_OBJECTS) $(test_rand_isaac_LDADD) $(LIBS)
+
+test-read$(EXEEXT): $(test_read_OBJECTS) $(test_read_DEPENDENCIES) $(EXTRA_test_read_DEPENDENCIES) 
+	@rm -f test-read$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_read_OBJECTS) $(test_read_LDADD) $(LIBS)
+
+test-read-file$(EXEEXT): $(test_read_file_OBJECTS) $(test_read_file_DEPENDENCIES) $(EXTRA_test_read_file_DEPENDENCIES) 
+	@rm -f test-read-file$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_read_file_OBJECTS) $(test_read_file_LDADD) $(LIBS)
+
+test-readlink$(EXEEXT): $(test_readlink_OBJECTS) $(test_readlink_DEPENDENCIES) $(EXTRA_test_readlink_DEPENDENCIES) 
+	@rm -f test-readlink$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_readlink_OBJECTS) $(test_readlink_LDADD) $(LIBS)
+
+test-readlinkat$(EXEEXT): $(test_readlinkat_OBJECTS) $(test_readlinkat_DEPENDENCIES) $(EXTRA_test_readlinkat_DEPENDENCIES) 
+	@rm -f test-readlinkat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_readlinkat_OBJECTS) $(test_readlinkat_LDADD) $(LIBS)
+
+test-readtokens$(EXEEXT): $(test_readtokens_OBJECTS) $(test_readtokens_DEPENDENCIES) $(EXTRA_test_readtokens_DEPENDENCIES) 
+	@rm -f test-readtokens$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_readtokens_OBJECTS) $(test_readtokens_LDADD) $(LIBS)
+
+test-realloc-gnu$(EXEEXT): $(test_realloc_gnu_OBJECTS) $(test_realloc_gnu_DEPENDENCIES) $(EXTRA_test_realloc_gnu_DEPENDENCIES) 
+	@rm -f test-realloc-gnu$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_realloc_gnu_OBJECTS) $(test_realloc_gnu_LDADD) $(LIBS)
+
+test-regex$(EXEEXT): $(test_regex_OBJECTS) $(test_regex_DEPENDENCIES) $(EXTRA_test_regex_DEPENDENCIES) 
+	@rm -f test-regex$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_regex_OBJECTS) $(test_regex_LDADD) $(LIBS)
+
+test-remove$(EXEEXT): $(test_remove_OBJECTS) $(test_remove_DEPENDENCIES) $(EXTRA_test_remove_DEPENDENCIES) 
+	@rm -f test-remove$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_remove_OBJECTS) $(test_remove_LDADD) $(LIBS)
+
+test-rename$(EXEEXT): $(test_rename_OBJECTS) $(test_rename_DEPENDENCIES) $(EXTRA_test_rename_DEPENDENCIES) 
+	@rm -f test-rename$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_rename_OBJECTS) $(test_rename_LDADD) $(LIBS)
+
+test-renameat$(EXEEXT): $(test_renameat_OBJECTS) $(test_renameat_DEPENDENCIES) $(EXTRA_test_renameat_DEPENDENCIES) 
+	@rm -f test-renameat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_renameat_OBJECTS) $(test_renameat_LDADD) $(LIBS)
+
+test-renameatu$(EXEEXT): $(test_renameatu_OBJECTS) $(test_renameatu_DEPENDENCIES) $(EXTRA_test_renameatu_DEPENDENCIES) 
+	@rm -f test-renameatu$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_renameatu_OBJECTS) $(test_renameatu_LDADD) $(LIBS)
+
+test-rmdir$(EXEEXT): $(test_rmdir_OBJECTS) $(test_rmdir_DEPENDENCIES) $(EXTRA_test_rmdir_DEPENDENCIES) 
+	@rm -f test-rmdir$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_rmdir_OBJECTS) $(test_rmdir_LDADD) $(LIBS)
+
+test-rwlock1$(EXEEXT): $(test_rwlock1_OBJECTS) $(test_rwlock1_DEPENDENCIES) $(EXTRA_test_rwlock1_DEPENDENCIES) 
+	@rm -f test-rwlock1$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_rwlock1_OBJECTS) $(test_rwlock1_LDADD) $(LIBS)
+
+test-sameacls$(EXEEXT): $(test_sameacls_OBJECTS) $(test_sameacls_DEPENDENCIES) $(EXTRA_test_sameacls_DEPENDENCIES) 
+	@rm -f test-sameacls$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sameacls_OBJECTS) $(test_sameacls_LDADD) $(LIBS)
+
+test-sched$(EXEEXT): $(test_sched_OBJECTS) $(test_sched_DEPENDENCIES) $(EXTRA_test_sched_DEPENDENCIES) 
+	@rm -f test-sched$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sched_OBJECTS) $(test_sched_LDADD) $(LIBS)
+
+test-select$(EXEEXT): $(test_select_OBJECTS) $(test_select_DEPENDENCIES) $(EXTRA_test_select_DEPENDENCIES) 
+	@rm -f test-select$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_select_OBJECTS) $(test_select_LDADD) $(LIBS)
+
+test-select-fd$(EXEEXT): $(test_select_fd_OBJECTS) $(test_select_fd_DEPENDENCIES) $(EXTRA_test_select_fd_DEPENDENCIES) 
+	@rm -f test-select-fd$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_select_fd_OBJECTS) $(test_select_fd_LDADD) $(LIBS)
+
+test-select-stdin$(EXEEXT): $(test_select_stdin_OBJECTS) $(test_select_stdin_DEPENDENCIES) $(EXTRA_test_select_stdin_DEPENDENCIES) 
+	@rm -f test-select-stdin$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_select_stdin_OBJECTS) $(test_select_stdin_LDADD) $(LIBS)
+
+test-set-mode-acl$(EXEEXT): $(test_set_mode_acl_OBJECTS) $(test_set_mode_acl_DEPENDENCIES) $(EXTRA_test_set_mode_acl_DEPENDENCIES) 
+	@rm -f test-set-mode-acl$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_set_mode_acl_OBJECTS) $(test_set_mode_acl_LDADD) $(LIBS)
+
+test-setenv$(EXEEXT): $(test_setenv_OBJECTS) $(test_setenv_DEPENDENCIES) $(EXTRA_test_setenv_DEPENDENCIES) 
+	@rm -f test-setenv$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_setenv_OBJECTS) $(test_setenv_LDADD) $(LIBS)
+
+test-setlocale1$(EXEEXT): $(test_setlocale1_OBJECTS) $(test_setlocale1_DEPENDENCIES) $(EXTRA_test_setlocale1_DEPENDENCIES) 
+	@rm -f test-setlocale1$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_setlocale1_OBJECTS) $(test_setlocale1_LDADD) $(LIBS)
+
+test-setlocale2$(EXEEXT): $(test_setlocale2_OBJECTS) $(test_setlocale2_DEPENDENCIES) $(EXTRA_test_setlocale2_DEPENDENCIES) 
+	@rm -f test-setlocale2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_setlocale2_OBJECTS) $(test_setlocale2_LDADD) $(LIBS)
+
+test-setlocale_null$(EXEEXT): $(test_setlocale_null_OBJECTS) $(test_setlocale_null_DEPENDENCIES) $(EXTRA_test_setlocale_null_DEPENDENCIES) 
+	@rm -f test-setlocale_null$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_setlocale_null_OBJECTS) $(test_setlocale_null_LDADD) $(LIBS)
+
+test-setlocale_null-mt-all$(EXEEXT): $(test_setlocale_null_mt_all_OBJECTS) $(test_setlocale_null_mt_all_DEPENDENCIES) $(EXTRA_test_setlocale_null_mt_all_DEPENDENCIES) 
+	@rm -f test-setlocale_null-mt-all$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_setlocale_null_mt_all_OBJECTS) $(test_setlocale_null_mt_all_LDADD) $(LIBS)
+
+test-setlocale_null-mt-one$(EXEEXT): $(test_setlocale_null_mt_one_OBJECTS) $(test_setlocale_null_mt_one_DEPENDENCIES) $(EXTRA_test_setlocale_null_mt_one_DEPENDENCIES) 
+	@rm -f test-setlocale_null-mt-one$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_setlocale_null_mt_one_OBJECTS) $(test_setlocale_null_mt_one_LDADD) $(LIBS)
+
+test-setsockopt$(EXEEXT): $(test_setsockopt_OBJECTS) $(test_setsockopt_DEPENDENCIES) $(EXTRA_test_setsockopt_DEPENDENCIES) 
+	@rm -f test-setsockopt$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_setsockopt_OBJECTS) $(test_setsockopt_LDADD) $(LIBS)
+
+test-sha1$(EXEEXT): $(test_sha1_OBJECTS) $(test_sha1_DEPENDENCIES) $(EXTRA_test_sha1_DEPENDENCIES) 
+	@rm -f test-sha1$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sha1_OBJECTS) $(test_sha1_LDADD) $(LIBS)
+
+test-sha256$(EXEEXT): $(test_sha256_OBJECTS) $(test_sha256_DEPENDENCIES) $(EXTRA_test_sha256_DEPENDENCIES) 
+	@rm -f test-sha256$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sha256_OBJECTS) $(test_sha256_LDADD) $(LIBS)
+
+test-sha512$(EXEEXT): $(test_sha512_OBJECTS) $(test_sha512_DEPENDENCIES) $(EXTRA_test_sha512_DEPENDENCIES) 
+	@rm -f test-sha512$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sha512_OBJECTS) $(test_sha512_LDADD) $(LIBS)
+
+test-sigaction$(EXEEXT): $(test_sigaction_OBJECTS) $(test_sigaction_DEPENDENCIES) $(EXTRA_test_sigaction_DEPENDENCIES) 
+	@rm -f test-sigaction$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sigaction_OBJECTS) $(test_sigaction_LDADD) $(LIBS)
+
+test-signal-h$(EXEEXT): $(test_signal_h_OBJECTS) $(test_signal_h_DEPENDENCIES) $(EXTRA_test_signal_h_DEPENDENCIES) 
+	@rm -f test-signal-h$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_signal_h_OBJECTS) $(test_signal_h_LDADD) $(LIBS)
+
+test-signbit$(EXEEXT): $(test_signbit_OBJECTS) $(test_signbit_DEPENDENCIES) $(EXTRA_test_signbit_DEPENDENCIES) 
+	@rm -f test-signbit$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_signbit_OBJECTS) $(test_signbit_LDADD) $(LIBS)
+
+test-sigprocmask$(EXEEXT): $(test_sigprocmask_OBJECTS) $(test_sigprocmask_DEPENDENCIES) $(EXTRA_test_sigprocmask_DEPENDENCIES) 
+	@rm -f test-sigprocmask$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sigprocmask_OBJECTS) $(test_sigprocmask_LDADD) $(LIBS)
+
+test-sleep$(EXEEXT): $(test_sleep_OBJECTS) $(test_sleep_DEPENDENCIES) $(EXTRA_test_sleep_DEPENDENCIES) 
+	@rm -f test-sleep$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sleep_OBJECTS) $(test_sleep_LDADD) $(LIBS)
+
+test-snprintf$(EXEEXT): $(test_snprintf_OBJECTS) $(test_snprintf_DEPENDENCIES) $(EXTRA_test_snprintf_DEPENDENCIES) 
+	@rm -f test-snprintf$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_snprintf_OBJECTS) $(test_snprintf_LDADD) $(LIBS)
+
+test-sockets$(EXEEXT): $(test_sockets_OBJECTS) $(test_sockets_DEPENDENCIES) $(EXTRA_test_sockets_DEPENDENCIES) 
+	@rm -f test-sockets$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sockets_OBJECTS) $(test_sockets_LDADD) $(LIBS)
+
+test-stat$(EXEEXT): $(test_stat_OBJECTS) $(test_stat_DEPENDENCIES) $(EXTRA_test_stat_DEPENDENCIES) 
+	@rm -f test-stat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_stat_OBJECTS) $(test_stat_LDADD) $(LIBS)
+
+test-stat-time$(EXEEXT): $(test_stat_time_OBJECTS) $(test_stat_time_DEPENDENCIES) $(EXTRA_test_stat_time_DEPENDENCIES) 
+	@rm -f test-stat-time$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_stat_time_OBJECTS) $(test_stat_time_LDADD) $(LIBS)
+
+test-statat$(EXEEXT): $(test_statat_OBJECTS) $(test_statat_DEPENDENCIES) $(EXTRA_test_statat_DEPENDENCIES) 
+	@rm -f test-statat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_statat_OBJECTS) $(test_statat_LDADD) $(LIBS)
+
+test-stdalign$(EXEEXT): $(test_stdalign_OBJECTS) $(test_stdalign_DEPENDENCIES) $(EXTRA_test_stdalign_DEPENDENCIES) 
+	@rm -f test-stdalign$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_stdalign_OBJECTS) $(test_stdalign_LDADD) $(LIBS)
+
+test-stdbool$(EXEEXT): $(test_stdbool_OBJECTS) $(test_stdbool_DEPENDENCIES) $(EXTRA_test_stdbool_DEPENDENCIES) 
+	@rm -f test-stdbool$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_stdbool_OBJECTS) $(test_stdbool_LDADD) $(LIBS)
+
+test-stddef$(EXEEXT): $(test_stddef_OBJECTS) $(test_stddef_DEPENDENCIES) $(EXTRA_test_stddef_DEPENDENCIES) 
+	@rm -f test-stddef$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_stddef_OBJECTS) $(test_stddef_LDADD) $(LIBS)
+
+test-stdint$(EXEEXT): $(test_stdint_OBJECTS) $(test_stdint_DEPENDENCIES) $(EXTRA_test_stdint_DEPENDENCIES) 
+	@rm -f test-stdint$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_stdint_OBJECTS) $(test_stdint_LDADD) $(LIBS)
+
+test-stdio$(EXEEXT): $(test_stdio_OBJECTS) $(test_stdio_DEPENDENCIES) $(EXTRA_test_stdio_DEPENDENCIES) 
+	@rm -f test-stdio$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_stdio_OBJECTS) $(test_stdio_LDADD) $(LIBS)
+
+test-stdlib$(EXEEXT): $(test_stdlib_OBJECTS) $(test_stdlib_DEPENDENCIES) $(EXTRA_test_stdlib_DEPENDENCIES) 
+	@rm -f test-stdlib$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_stdlib_OBJECTS) $(test_stdlib_LDADD) $(LIBS)
+
+test-strerror$(EXEEXT): $(test_strerror_OBJECTS) $(test_strerror_DEPENDENCIES) $(EXTRA_test_strerror_DEPENDENCIES) 
+	@rm -f test-strerror$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_strerror_OBJECTS) $(test_strerror_LDADD) $(LIBS)
+
+test-strerror_r$(EXEEXT): $(test_strerror_r_OBJECTS) $(test_strerror_r_DEPENDENCIES) $(EXTRA_test_strerror_r_DEPENDENCIES) 
+	@rm -f test-strerror_r$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_strerror_r_OBJECTS) $(test_strerror_r_LDADD) $(LIBS)
+
+test-striconv$(EXEEXT): $(test_striconv_OBJECTS) $(test_striconv_DEPENDENCIES) $(EXTRA_test_striconv_DEPENDENCIES) 
+	@rm -f test-striconv$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_striconv_OBJECTS) $(test_striconv_LDADD) $(LIBS)
+
+test-string$(EXEEXT): $(test_string_OBJECTS) $(test_string_DEPENDENCIES) $(EXTRA_test_string_DEPENDENCIES) 
+	@rm -f test-string$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_string_OBJECTS) $(test_string_LDADD) $(LIBS)
+
+test-strncat$(EXEEXT): $(test_strncat_OBJECTS) $(test_strncat_DEPENDENCIES) $(EXTRA_test_strncat_DEPENDENCIES) 
+	@rm -f test-strncat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_strncat_OBJECTS) $(test_strncat_LDADD) $(LIBS)
+
+test-strnlen$(EXEEXT): $(test_strnlen_OBJECTS) $(test_strnlen_DEPENDENCIES) $(EXTRA_test_strnlen_DEPENDENCIES) 
+	@rm -f test-strnlen$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_strnlen_OBJECTS) $(test_strnlen_LDADD) $(LIBS)
+
+test-strsignal$(EXEEXT): $(test_strsignal_OBJECTS) $(test_strsignal_DEPENDENCIES) $(EXTRA_test_strsignal_DEPENDENCIES) 
+	@rm -f test-strsignal$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_strsignal_OBJECTS) $(test_strsignal_LDADD) $(LIBS)
+
+test-strtod$(EXEEXT): $(test_strtod_OBJECTS) $(test_strtod_DEPENDENCIES) $(EXTRA_test_strtod_DEPENDENCIES) 
+	@rm -f test-strtod$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_strtod_OBJECTS) $(test_strtod_LDADD) $(LIBS)
+
+test-strtod1$(EXEEXT): $(test_strtod1_OBJECTS) $(test_strtod1_DEPENDENCIES) $(EXTRA_test_strtod1_DEPENDENCIES) 
+	@rm -f test-strtod1$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_strtod1_OBJECTS) $(test_strtod1_LDADD) $(LIBS)
+
+test-strtoimax$(EXEEXT): $(test_strtoimax_OBJECTS) $(test_strtoimax_DEPENDENCIES) $(EXTRA_test_strtoimax_DEPENDENCIES) 
+	@rm -f test-strtoimax$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_strtoimax_OBJECTS) $(test_strtoimax_LDADD) $(LIBS)
+
+test-strtold$(EXEEXT): $(test_strtold_OBJECTS) $(test_strtold_DEPENDENCIES) $(EXTRA_test_strtold_DEPENDENCIES) 
+	@rm -f test-strtold$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_strtold_OBJECTS) $(test_strtold_LDADD) $(LIBS)
+
+test-strtold1$(EXEEXT): $(test_strtold1_OBJECTS) $(test_strtold1_DEPENDENCIES) $(EXTRA_test_strtold1_DEPENDENCIES) 
+	@rm -f test-strtold1$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_strtold1_OBJECTS) $(test_strtold1_LDADD) $(LIBS)
+
+test-strtoll$(EXEEXT): $(test_strtoll_OBJECTS) $(test_strtoll_DEPENDENCIES) $(EXTRA_test_strtoll_DEPENDENCIES) 
+	@rm -f test-strtoll$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_strtoll_OBJECTS) $(test_strtoll_LDADD) $(LIBS)
+
+test-strtoull$(EXEEXT): $(test_strtoull_OBJECTS) $(test_strtoull_DEPENDENCIES) $(EXTRA_test_strtoull_DEPENDENCIES) 
+	@rm -f test-strtoull$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_strtoull_OBJECTS) $(test_strtoull_LDADD) $(LIBS)
+
+test-strtoumax$(EXEEXT): $(test_strtoumax_OBJECTS) $(test_strtoumax_DEPENDENCIES) $(EXTRA_test_strtoumax_DEPENDENCIES) 
+	@rm -f test-strtoumax$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_strtoumax_OBJECTS) $(test_strtoumax_LDADD) $(LIBS)
+
+test-symlink$(EXEEXT): $(test_symlink_OBJECTS) $(test_symlink_DEPENDENCIES) $(EXTRA_test_symlink_DEPENDENCIES) 
+	@rm -f test-symlink$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_symlink_OBJECTS) $(test_symlink_LDADD) $(LIBS)
+
+test-symlinkat$(EXEEXT): $(test_symlinkat_OBJECTS) $(test_symlinkat_DEPENDENCIES) $(EXTRA_test_symlinkat_DEPENDENCIES) 
+	@rm -f test-symlinkat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_symlinkat_OBJECTS) $(test_symlinkat_LDADD) $(LIBS)
+
+test-sys_ioctl$(EXEEXT): $(test_sys_ioctl_OBJECTS) $(test_sys_ioctl_DEPENDENCIES) $(EXTRA_test_sys_ioctl_DEPENDENCIES) 
+	@rm -f test-sys_ioctl$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sys_ioctl_OBJECTS) $(test_sys_ioctl_LDADD) $(LIBS)
+
+test-sys_resource$(EXEEXT): $(test_sys_resource_OBJECTS) $(test_sys_resource_DEPENDENCIES) $(EXTRA_test_sys_resource_DEPENDENCIES) 
+	@rm -f test-sys_resource$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sys_resource_OBJECTS) $(test_sys_resource_LDADD) $(LIBS)
+
+test-sys_select$(EXEEXT): $(test_sys_select_OBJECTS) $(test_sys_select_DEPENDENCIES) $(EXTRA_test_sys_select_DEPENDENCIES) 
+	@rm -f test-sys_select$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sys_select_OBJECTS) $(test_sys_select_LDADD) $(LIBS)
+
+test-sys_socket$(EXEEXT): $(test_sys_socket_OBJECTS) $(test_sys_socket_DEPENDENCIES) $(EXTRA_test_sys_socket_DEPENDENCIES) 
+	@rm -f test-sys_socket$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sys_socket_OBJECTS) $(test_sys_socket_LDADD) $(LIBS)
+
+test-sys_stat$(EXEEXT): $(test_sys_stat_OBJECTS) $(test_sys_stat_DEPENDENCIES) $(EXTRA_test_sys_stat_DEPENDENCIES) 
+	@rm -f test-sys_stat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sys_stat_OBJECTS) $(test_sys_stat_LDADD) $(LIBS)
+
+test-sys_time$(EXEEXT): $(test_sys_time_OBJECTS) $(test_sys_time_DEPENDENCIES) $(EXTRA_test_sys_time_DEPENDENCIES) 
+	@rm -f test-sys_time$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sys_time_OBJECTS) $(test_sys_time_LDADD) $(LIBS)
+
+test-sys_types$(EXEEXT): $(test_sys_types_OBJECTS) $(test_sys_types_DEPENDENCIES) $(EXTRA_test_sys_types_DEPENDENCIES) 
+	@rm -f test-sys_types$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sys_types_OBJECTS) $(test_sys_types_LDADD) $(LIBS)
+
+test-sys_uio$(EXEEXT): $(test_sys_uio_OBJECTS) $(test_sys_uio_DEPENDENCIES) $(EXTRA_test_sys_uio_DEPENDENCIES) 
+	@rm -f test-sys_uio$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sys_uio_OBJECTS) $(test_sys_uio_LDADD) $(LIBS)
+
+test-sys_utsname$(EXEEXT): $(test_sys_utsname_OBJECTS) $(test_sys_utsname_DEPENDENCIES) $(EXTRA_test_sys_utsname_DEPENDENCIES) 
+	@rm -f test-sys_utsname$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sys_utsname_OBJECTS) $(test_sys_utsname_LDADD) $(LIBS)
+
+test-sys_wait$(EXEEXT): $(test_sys_wait_OBJECTS) $(test_sys_wait_DEPENDENCIES) $(EXTRA_test_sys_wait_DEPENDENCIES) 
+	@rm -f test-sys_wait$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sys_wait_OBJECTS) $(test_sys_wait_LDADD) $(LIBS)
+
+test-termios$(EXEEXT): $(test_termios_OBJECTS) $(test_termios_DEPENDENCIES) $(EXTRA_test_termios_DEPENDENCIES) 
+	@rm -f test-termios$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_termios_OBJECTS) $(test_termios_LDADD) $(LIBS)
+
+test-thread_create$(EXEEXT): $(test_thread_create_OBJECTS) $(test_thread_create_DEPENDENCIES) $(EXTRA_test_thread_create_DEPENDENCIES) 
+	@rm -f test-thread_create$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_thread_create_OBJECTS) $(test_thread_create_LDADD) $(LIBS)
+
+test-thread_self$(EXEEXT): $(test_thread_self_OBJECTS) $(test_thread_self_DEPENDENCIES) $(EXTRA_test_thread_self_DEPENDENCIES) 
+	@rm -f test-thread_self$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_thread_self_OBJECTS) $(test_thread_self_LDADD) $(LIBS)
+
+test-time$(EXEEXT): $(test_time_OBJECTS) $(test_time_DEPENDENCIES) $(EXTRA_test_time_DEPENDENCIES) 
+	@rm -f test-time$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_time_OBJECTS) $(test_time_LDADD) $(LIBS)
+
+test-timespec$(EXEEXT): $(test_timespec_OBJECTS) $(test_timespec_DEPENDENCIES) $(EXTRA_test_timespec_DEPENDENCIES) 
+	@rm -f test-timespec$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_timespec_OBJECTS) $(test_timespec_LDADD) $(LIBS)
+
+test-tls$(EXEEXT): $(test_tls_OBJECTS) $(test_tls_DEPENDENCIES) $(EXTRA_test_tls_DEPENDENCIES) 
+	@rm -f test-tls$(EXEEXT)
+	$(AM_V_CCLD)$(test_tls_LINK) $(test_tls_OBJECTS) $(test_tls_LDADD) $(LIBS)
+
+test-u64$(EXEEXT): $(test_u64_OBJECTS) $(test_u64_DEPENDENCIES) $(EXTRA_test_u64_DEPENDENCIES) 
+	@rm -f test-u64$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_u64_OBJECTS) $(test_u64_LDADD) $(LIBS)
+unistr/$(am__dirstamp):
+	@$(MKDIR_P) unistr
+	@: > unistr/$(am__dirstamp)
+unistr/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) unistr/$(DEPDIR)
+	@: > unistr/$(DEPDIR)/$(am__dirstamp)
+unistr/test-u8-mbtoucr.$(OBJEXT): unistr/$(am__dirstamp) \
+	unistr/$(DEPDIR)/$(am__dirstamp)
+
+test-u8-mbtoucr$(EXEEXT): $(test_u8_mbtoucr_OBJECTS) $(test_u8_mbtoucr_DEPENDENCIES) $(EXTRA_test_u8_mbtoucr_DEPENDENCIES) 
+	@rm -f test-u8-mbtoucr$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_u8_mbtoucr_OBJECTS) $(test_u8_mbtoucr_LDADD) $(LIBS)
+unistr/test-u8-uctomb.$(OBJEXT): unistr/$(am__dirstamp) \
+	unistr/$(DEPDIR)/$(am__dirstamp)
+
+test-u8-uctomb$(EXEEXT): $(test_u8_uctomb_OBJECTS) $(test_u8_uctomb_DEPENDENCIES) $(EXTRA_test_u8_uctomb_DEPENDENCIES) 
+	@rm -f test-u8-uctomb$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_u8_uctomb_OBJECTS) $(test_u8_uctomb_LDADD) $(LIBS)
+uniwidth/$(am__dirstamp):
+	@$(MKDIR_P) uniwidth
+	@: > uniwidth/$(am__dirstamp)
+uniwidth/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) uniwidth/$(DEPDIR)
+	@: > uniwidth/$(DEPDIR)/$(am__dirstamp)
+uniwidth/test-uc_width.$(OBJEXT): uniwidth/$(am__dirstamp) \
+	uniwidth/$(DEPDIR)/$(am__dirstamp)
+
+test-uc_width$(EXEEXT): $(test_uc_width_OBJECTS) $(test_uc_width_DEPENDENCIES) $(EXTRA_test_uc_width_DEPENDENCIES) 
+	@rm -f test-uc_width$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_uc_width_OBJECTS) $(test_uc_width_LDADD) $(LIBS)
+uniwidth/test-uc_width2.$(OBJEXT): uniwidth/$(am__dirstamp) \
+	uniwidth/$(DEPDIR)/$(am__dirstamp)
+
+test-uc_width2$(EXEEXT): $(test_uc_width2_OBJECTS) $(test_uc_width2_DEPENDENCIES) $(EXTRA_test_uc_width2_DEPENDENCIES) 
+	@rm -f test-uc_width2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_uc_width2_OBJECTS) $(test_uc_width2_LDADD) $(LIBS)
+
+test-uname$(EXEEXT): $(test_uname_OBJECTS) $(test_uname_DEPENDENCIES) $(EXTRA_test_uname_DEPENDENCIES) 
+	@rm -f test-uname$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_uname_OBJECTS) $(test_uname_LDADD) $(LIBS)
+
+test-unistd$(EXEEXT): $(test_unistd_OBJECTS) $(test_unistd_DEPENDENCIES) $(EXTRA_test_unistd_DEPENDENCIES) 
+	@rm -f test-unistd$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_unistd_OBJECTS) $(test_unistd_LDADD) $(LIBS)
+
+test-unlink$(EXEEXT): $(test_unlink_OBJECTS) $(test_unlink_DEPENDENCIES) $(EXTRA_test_unlink_DEPENDENCIES) 
+	@rm -f test-unlink$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_unlink_OBJECTS) $(test_unlink_LDADD) $(LIBS)
+
+test-unlinkat$(EXEEXT): $(test_unlinkat_OBJECTS) $(test_unlinkat_DEPENDENCIES) $(EXTRA_test_unlinkat_DEPENDENCIES) 
+	@rm -f test-unlinkat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_unlinkat_OBJECTS) $(test_unlinkat_LDADD) $(LIBS)
+
+test-unsetenv$(EXEEXT): $(test_unsetenv_OBJECTS) $(test_unsetenv_DEPENDENCIES) $(EXTRA_test_unsetenv_DEPENDENCIES) 
+	@rm -f test-unsetenv$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_unsetenv_OBJECTS) $(test_unsetenv_LDADD) $(LIBS)
+
+test-userspec$(EXEEXT): $(test_userspec_OBJECTS) $(test_userspec_DEPENDENCIES) $(EXTRA_test_userspec_DEPENDENCIES) 
+	@rm -f test-userspec$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_userspec_OBJECTS) $(test_userspec_LDADD) $(LIBS)
+
+test-usleep$(EXEEXT): $(test_usleep_OBJECTS) $(test_usleep_DEPENDENCIES) $(EXTRA_test_usleep_DEPENDENCIES) 
+	@rm -f test-usleep$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_usleep_OBJECTS) $(test_usleep_LDADD) $(LIBS)
+
+test-utime$(EXEEXT): $(test_utime_OBJECTS) $(test_utime_DEPENDENCIES) $(EXTRA_test_utime_DEPENDENCIES) 
+	@rm -f test-utime$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_utime_OBJECTS) $(test_utime_LDADD) $(LIBS)
+
+test-utime-h$(EXEEXT): $(test_utime_h_OBJECTS) $(test_utime_h_DEPENDENCIES) $(EXTRA_test_utime_h_DEPENDENCIES) 
+	@rm -f test-utime-h$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_utime_h_OBJECTS) $(test_utime_h_LDADD) $(LIBS)
+
+test-utimens$(EXEEXT): $(test_utimens_OBJECTS) $(test_utimens_DEPENDENCIES) $(EXTRA_test_utimens_DEPENDENCIES) 
+	@rm -f test-utimens$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_utimens_OBJECTS) $(test_utimens_LDADD) $(LIBS)
+
+test-utimensat$(EXEEXT): $(test_utimensat_OBJECTS) $(test_utimensat_DEPENDENCIES) $(EXTRA_test_utimensat_DEPENDENCIES) 
+	@rm -f test-utimensat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_utimensat_OBJECTS) $(test_utimensat_LDADD) $(LIBS)
+
+test-vasnprintf$(EXEEXT): $(test_vasnprintf_OBJECTS) $(test_vasnprintf_DEPENDENCIES) $(EXTRA_test_vasnprintf_DEPENDENCIES) 
+	@rm -f test-vasnprintf$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_vasnprintf_OBJECTS) $(test_vasnprintf_LDADD) $(LIBS)
+
+test-vasprintf$(EXEEXT): $(test_vasprintf_OBJECTS) $(test_vasprintf_DEPENDENCIES) $(EXTRA_test_vasprintf_DEPENDENCIES) 
+	@rm -f test-vasprintf$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_vasprintf_OBJECTS) $(test_vasprintf_LDADD) $(LIBS)
+
+test-vasprintf-posix$(EXEEXT): $(test_vasprintf_posix_OBJECTS) $(test_vasprintf_posix_DEPENDENCIES) $(EXTRA_test_vasprintf_posix_DEPENDENCIES) 
+	@rm -f test-vasprintf-posix$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_vasprintf_posix_OBJECTS) $(test_vasprintf_posix_LDADD) $(LIBS)
+
+test-verify$(EXEEXT): $(test_verify_OBJECTS) $(test_verify_DEPENDENCIES) $(EXTRA_test_verify_DEPENDENCIES) 
+	@rm -f test-verify$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_verify_OBJECTS) $(test_verify_LDADD) $(LIBS)
+
+test-verify-try$(EXEEXT): $(test_verify_try_OBJECTS) $(test_verify_try_DEPENDENCIES) $(EXTRA_test_verify_try_DEPENDENCIES) 
+	@rm -f test-verify-try$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_verify_try_OBJECTS) $(test_verify_try_LDADD) $(LIBS)
+
+test-version-etc$(EXEEXT): $(test_version_etc_OBJECTS) $(test_version_etc_DEPENDENCIES) $(EXTRA_test_version_etc_DEPENDENCIES) 
+	@rm -f test-version-etc$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_version_etc_OBJECTS) $(test_version_etc_LDADD) $(LIBS)
+
+test-vfprintf-posix$(EXEEXT): $(test_vfprintf_posix_OBJECTS) $(test_vfprintf_posix_DEPENDENCIES) $(EXTRA_test_vfprintf_posix_DEPENDENCIES) 
+	@rm -f test-vfprintf-posix$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_vfprintf_posix_OBJECTS) $(test_vfprintf_posix_LDADD) $(LIBS)
+
+test-vprintf-posix$(EXEEXT): $(test_vprintf_posix_OBJECTS) $(test_vprintf_posix_DEPENDENCIES) $(EXTRA_test_vprintf_posix_DEPENDENCIES) 
+	@rm -f test-vprintf-posix$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_vprintf_posix_OBJECTS) $(test_vprintf_posix_LDADD) $(LIBS)
+
+test-wchar$(EXEEXT): $(test_wchar_OBJECTS) $(test_wchar_DEPENDENCIES) $(EXTRA_test_wchar_DEPENDENCIES) 
+	@rm -f test-wchar$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_wchar_OBJECTS) $(test_wchar_LDADD) $(LIBS)
+
+test-wcrtomb$(EXEEXT): $(test_wcrtomb_OBJECTS) $(test_wcrtomb_DEPENDENCIES) $(EXTRA_test_wcrtomb_DEPENDENCIES) 
+	@rm -f test-wcrtomb$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_wcrtomb_OBJECTS) $(test_wcrtomb_LDADD) $(LIBS)
+
+test-wcrtomb-w32$(EXEEXT): $(test_wcrtomb_w32_OBJECTS) $(test_wcrtomb_w32_DEPENDENCIES) $(EXTRA_test_wcrtomb_w32_DEPENDENCIES) 
+	@rm -f test-wcrtomb-w32$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_wcrtomb_w32_OBJECTS) $(test_wcrtomb_w32_LDADD) $(LIBS)
+
+test-wctype-h$(EXEEXT): $(test_wctype_h_OBJECTS) $(test_wctype_h_DEPENDENCIES) $(EXTRA_test_wctype_h_DEPENDENCIES) 
+	@rm -f test-wctype-h$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_wctype_h_OBJECTS) $(test_wctype_h_LDADD) $(LIBS)
+
+test-wcwidth$(EXEEXT): $(test_wcwidth_OBJECTS) $(test_wcwidth_DEPENDENCIES) $(EXTRA_test_wcwidth_DEPENDENCIES) 
+	@rm -f test-wcwidth$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_wcwidth_OBJECTS) $(test_wcwidth_LDADD) $(LIBS)
+
+test-write$(EXEEXT): $(test_write_OBJECTS) $(test_write_DEPENDENCIES) $(EXTRA_test_write_DEPENDENCIES) 
+	@rm -f test-write$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_write_OBJECTS) $(test_write_LDADD) $(LIBS)
+
+test-xalloc-die$(EXEEXT): $(test_xalloc_die_OBJECTS) $(test_xalloc_die_DEPENDENCIES) $(EXTRA_test_xalloc_die_DEPENDENCIES) 
+	@rm -f test-xalloc-die$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_xalloc_die_OBJECTS) $(test_xalloc_die_LDADD) $(LIBS)
+
+test-xfprintf-posix$(EXEEXT): $(test_xfprintf_posix_OBJECTS) $(test_xfprintf_posix_DEPENDENCIES) $(EXTRA_test_xfprintf_posix_DEPENDENCIES) 
+	@rm -f test-xfprintf-posix$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_xfprintf_posix_OBJECTS) $(test_xfprintf_posix_LDADD) $(LIBS)
+
+test-xprintf-posix$(EXEEXT): $(test_xprintf_posix_OBJECTS) $(test_xprintf_posix_DEPENDENCIES) $(EXTRA_test_xprintf_posix_DEPENDENCIES) 
+	@rm -f test-xprintf-posix$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_xprintf_posix_OBJECTS) $(test_xprintf_posix_LDADD) $(LIBS)
+
+test-xstrtoimax$(EXEEXT): $(test_xstrtoimax_OBJECTS) $(test_xstrtoimax_DEPENDENCIES) $(EXTRA_test_xstrtoimax_DEPENDENCIES) 
+	@rm -f test-xstrtoimax$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_xstrtoimax_OBJECTS) $(test_xstrtoimax_LDADD) $(LIBS)
+
+test-xstrtol$(EXEEXT): $(test_xstrtol_OBJECTS) $(test_xstrtol_DEPENDENCIES) $(EXTRA_test_xstrtol_DEPENDENCIES) 
+	@rm -f test-xstrtol$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_xstrtol_OBJECTS) $(test_xstrtol_LDADD) $(LIBS)
+
+test-xstrtoul$(EXEEXT): $(test_xstrtoul_OBJECTS) $(test_xstrtoul_DEPENDENCIES) $(EXTRA_test_xstrtoul_DEPENDENCIES) 
+	@rm -f test-xstrtoul$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_xstrtoul_OBJECTS) $(test_xstrtoul_LDADD) $(LIBS)
+
+test-xstrtoumax$(EXEEXT): $(test_xstrtoumax_OBJECTS) $(test_xstrtoumax_DEPENDENCIES) $(EXTRA_test_xstrtoumax_DEPENDENCIES) 
+	@rm -f test-xstrtoumax$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_xstrtoumax_OBJECTS) $(test_xstrtoumax_LDADD) $(LIBS)
+
+test-xvasprintf$(EXEEXT): $(test_xvasprintf_OBJECTS) $(test_xvasprintf_DEPENDENCIES) $(EXTRA_test_xvasprintf_DEPENDENCIES) 
+	@rm -f test-xvasprintf$(EXEEXT)
+	$(AM_V_CCLD)$(test_xvasprintf_LINK) $(test_xvasprintf_OBJECTS) $(test_xvasprintf_LDADD) $(LIBS)
+
+test-yesno$(EXEEXT): $(test_yesno_OBJECTS) $(test_yesno_DEPENDENCIES) $(EXTRA_test_yesno_DEPENDENCIES) 
+	@rm -f test-yesno$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_yesno_OBJECTS) $(test_yesno_LDADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+	-rm -f glthread/*.$(OBJEXT)
+	-rm -f unistr/*.$(OBJEXT)
+	-rm -f uniwidth/*.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/accept.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bench-md5.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bench-sha1.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bench-sha224.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bench-sha256.Po@am__quote@ # am--include-marker
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+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
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+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
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+	b='test-areadlink-with-size'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	b='test-areadlinkat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-argmatch.log: test-argmatch$(EXEEXT)
+	@p='test-argmatch$(EXEEXT)'; \
+	b='test-argmatch'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-argv-iter.log: test-argv-iter$(EXEEXT)
+	@p='test-argv-iter$(EXEEXT)'; \
+	b='test-argv-iter'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-arpa_inet.log: test-arpa_inet$(EXEEXT)
+	@p='test-arpa_inet$(EXEEXT)'; \
+	b='test-arpa_inet'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-base32.log: test-base32$(EXEEXT)
+	@p='test-base32$(EXEEXT)'; \
+	b='test-base32'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-base64.log: test-base64$(EXEEXT)
+	@p='test-base64$(EXEEXT)'; \
+	b='test-base64'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-binary-io.sh.log: test-binary-io.sh
+	@p='test-binary-io.sh'; \
+	b='test-binary-io.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-bind.log: test-bind$(EXEEXT)
+	@p='test-bind$(EXEEXT)'; \
+	b='test-bind'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-bitrotate.log: test-bitrotate$(EXEEXT)
+	@p='test-bitrotate$(EXEEXT)'; \
+	b='test-bitrotate'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-btowc1.sh.log: test-btowc1.sh
+	@p='test-btowc1.sh'; \
+	b='test-btowc1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-btowc2.sh.log: test-btowc2.sh
+	@p='test-btowc2.sh'; \
+	b='test-btowc2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-byteswap.log: test-byteswap$(EXEEXT)
+	@p='test-byteswap$(EXEEXT)'; \
+	b='test-byteswap'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-c-ctype.log: test-c-ctype$(EXEEXT)
+	@p='test-c-ctype$(EXEEXT)'; \
+	b='test-c-ctype'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-c-strcase.sh.log: test-c-strcase.sh
+	@p='test-c-strcase.sh'; \
+	b='test-c-strcase.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-calloc-gnu.log: test-calloc-gnu$(EXEEXT)
+	@p='test-calloc-gnu$(EXEEXT)'; \
+	b='test-calloc-gnu'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-canonicalize.log: test-canonicalize$(EXEEXT)
+	@p='test-canonicalize$(EXEEXT)'; \
+	b='test-canonicalize'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-chdir.log: test-chdir$(EXEEXT)
+	@p='test-chdir$(EXEEXT)'; \
+	b='test-chdir'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-chown.log: test-chown$(EXEEXT)
+	@p='test-chown$(EXEEXT)'; \
+	b='test-chown'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-cloexec.log: test-cloexec$(EXEEXT)
+	@p='test-cloexec$(EXEEXT)'; \
+	b='test-cloexec'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-close.log: test-close$(EXEEXT)
+	@p='test-close$(EXEEXT)'; \
+	b='test-close'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-closein.sh.log: test-closein.sh
+	@p='test-closein.sh'; \
+	b='test-closein.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-connect.log: test-connect$(EXEEXT)
+	@p='test-connect$(EXEEXT)'; \
+	b='test-connect'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-count-leading-zeros.log: test-count-leading-zeros$(EXEEXT)
+	@p='test-count-leading-zeros$(EXEEXT)'; \
+	b='test-count-leading-zeros'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-md5.log: test-md5$(EXEEXT)
+	@p='test-md5$(EXEEXT)'; \
+	b='test-md5'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sha1.log: test-sha1$(EXEEXT)
+	@p='test-sha1$(EXEEXT)'; \
+	b='test-sha1'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sha256.log: test-sha256$(EXEEXT)
+	@p='test-sha256$(EXEEXT)'; \
+	b='test-sha256'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sha512.log: test-sha512$(EXEEXT)
+	@p='test-sha512$(EXEEXT)'; \
+	b='test-sha512'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ctype.log: test-ctype$(EXEEXT)
+	@p='test-ctype$(EXEEXT)'; \
+	b='test-ctype'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-di-set.log: test-di-set$(EXEEXT)
+	@p='test-di-set$(EXEEXT)'; \
+	b='test-di-set'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-dirent-safer.log: test-dirent-safer$(EXEEXT)
+	@p='test-dirent-safer$(EXEEXT)'; \
+	b='test-dirent-safer'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-dirent.log: test-dirent$(EXEEXT)
+	@p='test-dirent$(EXEEXT)'; \
+	b='test-dirent'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-dirname.log: test-dirname$(EXEEXT)
+	@p='test-dirname$(EXEEXT)'; \
+	b='test-dirname'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-dup.log: test-dup$(EXEEXT)
+	@p='test-dup$(EXEEXT)'; \
+	b='test-dup'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-dup2.log: test-dup2$(EXEEXT)
+	@p='test-dup2$(EXEEXT)'; \
+	b='test-dup2'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-environ.log: test-environ$(EXEEXT)
+	@p='test-environ$(EXEEXT)'; \
+	b='test-environ'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-errno.log: test-errno$(EXEEXT)
+	@p='test-errno$(EXEEXT)'; \
+	b='test-errno'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude1.sh.log: test-exclude1.sh
+	@p='test-exclude1.sh'; \
+	b='test-exclude1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude2.sh.log: test-exclude2.sh
+	@p='test-exclude2.sh'; \
+	b='test-exclude2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude3.sh.log: test-exclude3.sh
+	@p='test-exclude3.sh'; \
+	b='test-exclude3.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude4.sh.log: test-exclude4.sh
+	@p='test-exclude4.sh'; \
+	b='test-exclude4.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude5.sh.log: test-exclude5.sh
+	@p='test-exclude5.sh'; \
+	b='test-exclude5.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude6.sh.log: test-exclude6.sh
+	@p='test-exclude6.sh'; \
+	b='test-exclude6.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude7.sh.log: test-exclude7.sh
+	@p='test-exclude7.sh'; \
+	b='test-exclude7.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude8.sh.log: test-exclude8.sh
+	@p='test-exclude8.sh'; \
+	b='test-exclude8.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-faccessat.log: test-faccessat$(EXEEXT)
+	@p='test-faccessat$(EXEEXT)'; \
+	b='test-faccessat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fadvise.log: test-fadvise$(EXEEXT)
+	@p='test-fadvise$(EXEEXT)'; \
+	b='test-fadvise'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fchdir.log: test-fchdir$(EXEEXT)
+	@p='test-fchdir$(EXEEXT)'; \
+	b='test-fchdir'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fchmodat.log: test-fchmodat$(EXEEXT)
+	@p='test-fchmodat$(EXEEXT)'; \
+	b='test-fchmodat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fchownat.log: test-fchownat$(EXEEXT)
+	@p='test-fchownat$(EXEEXT)'; \
+	b='test-fchownat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fclose.log: test-fclose$(EXEEXT)
+	@p='test-fclose$(EXEEXT)'; \
+	b='test-fclose'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fcntl-h.log: test-fcntl-h$(EXEEXT)
+	@p='test-fcntl-h$(EXEEXT)'; \
+	b='test-fcntl-h'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fcntl-safer.log: test-fcntl-safer$(EXEEXT)
+	@p='test-fcntl-safer$(EXEEXT)'; \
+	b='test-fcntl-safer'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fcntl.log: test-fcntl$(EXEEXT)
+	@p='test-fcntl$(EXEEXT)'; \
+	b='test-fcntl'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fdatasync.log: test-fdatasync$(EXEEXT)
+	@p='test-fdatasync$(EXEEXT)'; \
+	b='test-fdatasync'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fdopen.log: test-fdopen$(EXEEXT)
+	@p='test-fdopen$(EXEEXT)'; \
+	b='test-fdopen'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fdopendir.log: test-fdopendir$(EXEEXT)
+	@p='test-fdopendir$(EXEEXT)'; \
+	b='test-fdopendir'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fdutimensat.log: test-fdutimensat$(EXEEXT)
+	@p='test-fdutimensat$(EXEEXT)'; \
+	b='test-fdutimensat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fflush.log: test-fflush$(EXEEXT)
+	@p='test-fflush$(EXEEXT)'; \
+	b='test-fflush'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fflush2.sh.log: test-fflush2.sh
+	@p='test-fflush2.sh'; \
+	b='test-fflush2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fgetc.log: test-fgetc$(EXEEXT)
+	@p='test-fgetc$(EXEEXT)'; \
+	b='test-fgetc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-file-has-acl.sh.log: test-file-has-acl.sh
+	@p='test-file-has-acl.sh'; \
+	b='test-file-has-acl.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-file-has-acl-1.sh.log: test-file-has-acl-1.sh
+	@p='test-file-has-acl-1.sh'; \
+	b='test-file-has-acl-1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-file-has-acl-2.sh.log: test-file-has-acl-2.sh
+	@p='test-file-has-acl-2.sh'; \
+	b='test-file-has-acl-2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-filenamecat.log: test-filenamecat$(EXEEXT)
+	@p='test-filenamecat$(EXEEXT)'; \
+	b='test-filenamecat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-filevercmp.log: test-filevercmp$(EXEEXT)
+	@p='test-filevercmp$(EXEEXT)'; \
+	b='test-filevercmp'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-float.log: test-float$(EXEEXT)
+	@p='test-float$(EXEEXT)'; \
+	b='test-float'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fnmatch-h.log: test-fnmatch-h$(EXEEXT)
+	@p='test-fnmatch-h$(EXEEXT)'; \
+	b='test-fnmatch-h'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fnmatch.log: test-fnmatch$(EXEEXT)
+	@p='test-fnmatch$(EXEEXT)'; \
+	b='test-fnmatch'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fopen-safer.log: test-fopen-safer$(EXEEXT)
+	@p='test-fopen-safer$(EXEEXT)'; \
+	b='test-fopen-safer'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fopen.log: test-fopen$(EXEEXT)
+	@p='test-fopen$(EXEEXT)'; \
+	b='test-fopen'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fpending.sh.log: test-fpending.sh
+	@p='test-fpending.sh'; \
+	b='test-fpending.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fpurge.log: test-fpurge$(EXEEXT)
+	@p='test-fpurge$(EXEEXT)'; \
+	b='test-fpurge'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fputc.log: test-fputc$(EXEEXT)
+	@p='test-fputc$(EXEEXT)'; \
+	b='test-fputc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fread.log: test-fread$(EXEEXT)
+	@p='test-fread$(EXEEXT)'; \
+	b='test-fread'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-freadahead.sh.log: test-freadahead.sh
+	@p='test-freadahead.sh'; \
+	b='test-freadahead.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-freading.log: test-freading$(EXEEXT)
+	@p='test-freading$(EXEEXT)'; \
+	b='test-freading'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-freadptr.sh.log: test-freadptr.sh
+	@p='test-freadptr.sh'; \
+	b='test-freadptr.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-freadptr2.sh.log: test-freadptr2.sh
+	@p='test-freadptr2.sh'; \
+	b='test-freadptr2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-freadseek.sh.log: test-freadseek.sh
+	@p='test-freadseek.sh'; \
+	b='test-freadseek.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-freopen-safer.log: test-freopen-safer$(EXEEXT)
+	@p='test-freopen-safer$(EXEEXT)'; \
+	b='test-freopen-safer'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-freopen.log: test-freopen$(EXEEXT)
+	@p='test-freopen$(EXEEXT)'; \
+	b='test-freopen'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-frexp-nolibm.log: test-frexp-nolibm$(EXEEXT)
+	@p='test-frexp-nolibm$(EXEEXT)'; \
+	b='test-frexp-nolibm'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-frexpl-nolibm.log: test-frexpl-nolibm$(EXEEXT)
+	@p='test-frexpl-nolibm$(EXEEXT)'; \
+	b='test-frexpl-nolibm'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fseek.sh.log: test-fseek.sh
+	@p='test-fseek.sh'; \
+	b='test-fseek.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fseek2.sh.log: test-fseek2.sh
+	@p='test-fseek2.sh'; \
+	b='test-fseek2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fseeko.sh.log: test-fseeko.sh
+	@p='test-fseeko.sh'; \
+	b='test-fseeko.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fseeko2.sh.log: test-fseeko2.sh
+	@p='test-fseeko2.sh'; \
+	b='test-fseeko2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fseeko3.sh.log: test-fseeko3.sh
+	@p='test-fseeko3.sh'; \
+	b='test-fseeko3.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fseeko4.sh.log: test-fseeko4.sh
+	@p='test-fseeko4.sh'; \
+	b='test-fseeko4.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fseterr.log: test-fseterr$(EXEEXT)
+	@p='test-fseterr$(EXEEXT)'; \
+	b='test-fseterr'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fstat.log: test-fstat$(EXEEXT)
+	@p='test-fstat$(EXEEXT)'; \
+	b='test-fstat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fstatat.log: test-fstatat$(EXEEXT)
+	@p='test-fstatat$(EXEEXT)'; \
+	b='test-fstatat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fsync.log: test-fsync$(EXEEXT)
+	@p='test-fsync$(EXEEXT)'; \
+	b='test-fsync'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ftell.sh.log: test-ftell.sh
+	@p='test-ftell.sh'; \
+	b='test-ftell.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ftell2.sh.log: test-ftell2.sh
+	@p='test-ftell2.sh'; \
+	b='test-ftell2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ftell3.log: test-ftell3$(EXEEXT)
+	@p='test-ftell3$(EXEEXT)'; \
+	b='test-ftell3'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ftello.sh.log: test-ftello.sh
+	@p='test-ftello.sh'; \
+	b='test-ftello.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ftello2.sh.log: test-ftello2.sh
+	@p='test-ftello2.sh'; \
+	b='test-ftello2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ftello3.log: test-ftello3$(EXEEXT)
+	@p='test-ftello3$(EXEEXT)'; \
+	b='test-ftello3'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ftello4.sh.log: test-ftello4.sh
+	@p='test-ftello4.sh'; \
+	b='test-ftello4.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ftruncate.sh.log: test-ftruncate.sh
+	@p='test-ftruncate.sh'; \
+	b='test-ftruncate.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-futimens.log: test-futimens$(EXEEXT)
+	@p='test-futimens$(EXEEXT)'; \
+	b='test-futimens'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fwrite.log: test-fwrite$(EXEEXT)
+	@p='test-fwrite$(EXEEXT)'; \
+	b='test-fwrite'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getaddrinfo.log: test-getaddrinfo$(EXEEXT)
+	@p='test-getaddrinfo$(EXEEXT)'; \
+	b='test-getaddrinfo'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getcwd-lgpl.log: test-getcwd-lgpl$(EXEEXT)
+	@p='test-getcwd-lgpl$(EXEEXT)'; \
+	b='test-getcwd-lgpl'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getcwd.sh.log: test-getcwd.sh
+	@p='test-getcwd.sh'; \
+	b='test-getcwd.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getdelim.log: test-getdelim$(EXEEXT)
+	@p='test-getdelim$(EXEEXT)'; \
+	b='test-getdelim'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getdtablesize.log: test-getdtablesize$(EXEEXT)
+	@p='test-getdtablesize$(EXEEXT)'; \
+	b='test-getdtablesize'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getgroups.log: test-getgroups$(EXEEXT)
+	@p='test-getgroups$(EXEEXT)'; \
+	b='test-getgroups'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-gethostname.log: test-gethostname$(EXEEXT)
+	@p='test-gethostname$(EXEEXT)'; \
+	b='test-gethostname'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getline.log: test-getline$(EXEEXT)
+	@p='test-getline$(EXEEXT)'; \
+	b='test-getline'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getloadavg.log: test-getloadavg$(EXEEXT)
+	@p='test-getloadavg$(EXEEXT)'; \
+	b='test-getloadavg'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getlogin.log: test-getlogin$(EXEEXT)
+	@p='test-getlogin$(EXEEXT)'; \
+	b='test-getlogin'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getndelim2.log: test-getndelim2$(EXEEXT)
+	@p='test-getndelim2$(EXEEXT)'; \
+	b='test-getndelim2'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getopt-gnu.log: test-getopt-gnu$(EXEEXT)
+	@p='test-getopt-gnu$(EXEEXT)'; \
+	b='test-getopt-gnu'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getopt-posix.log: test-getopt-posix$(EXEEXT)
+	@p='test-getopt-posix$(EXEEXT)'; \
+	b='test-getopt-posix'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getprogname.log: test-getprogname$(EXEEXT)
+	@p='test-getprogname$(EXEEXT)'; \
+	b='test-getprogname'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getrusage.log: test-getrusage$(EXEEXT)
+	@p='test-getrusage$(EXEEXT)'; \
+	b='test-getrusage'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-gettimeofday.log: test-gettimeofday$(EXEEXT)
+	@p='test-gettimeofday$(EXEEXT)'; \
+	b='test-gettimeofday'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-hard-locale.log: test-hard-locale$(EXEEXT)
+	@p='test-hard-locale$(EXEEXT)'; \
+	b='test-hard-locale'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-hash.log: test-hash$(EXEEXT)
+	@p='test-hash$(EXEEXT)'; \
+	b='test-hash'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-i-ring.log: test-i-ring$(EXEEXT)
+	@p='test-i-ring$(EXEEXT)'; \
+	b='test-i-ring'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-iconv-h.log: test-iconv-h$(EXEEXT)
+	@p='test-iconv-h$(EXEEXT)'; \
+	b='test-iconv-h'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-iconv.log: test-iconv$(EXEEXT)
+	@p='test-iconv$(EXEEXT)'; \
+	b='test-iconv'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ignore-value.log: test-ignore-value$(EXEEXT)
+	@p='test-ignore-value$(EXEEXT)'; \
+	b='test-ignore-value'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-inet_ntop.log: test-inet_ntop$(EXEEXT)
+	@p='test-inet_ntop$(EXEEXT)'; \
+	b='test-inet_ntop'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-inet_pton.log: test-inet_pton$(EXEEXT)
+	@p='test-inet_pton$(EXEEXT)'; \
+	b='test-inet_pton'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ino-map.log: test-ino-map$(EXEEXT)
+	@p='test-ino-map$(EXEEXT)'; \
+	b='test-ino-map'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-intprops.log: test-intprops$(EXEEXT)
+	@p='test-intprops$(EXEEXT)'; \
+	b='test-intprops'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-inttostr.log: test-inttostr$(EXEEXT)
+	@p='test-inttostr$(EXEEXT)'; \
+	b='test-inttostr'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-inttypes.log: test-inttypes$(EXEEXT)
+	@p='test-inttypes$(EXEEXT)'; \
+	b='test-inttypes'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ioctl.log: test-ioctl$(EXEEXT)
+	@p='test-ioctl$(EXEEXT)'; \
+	b='test-ioctl'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-isatty.log: test-isatty$(EXEEXT)
+	@p='test-isatty$(EXEEXT)'; \
+	b='test-isatty'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-isblank.log: test-isblank$(EXEEXT)
+	@p='test-isblank$(EXEEXT)'; \
+	b='test-isblank'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-isnand-nolibm.log: test-isnand-nolibm$(EXEEXT)
+	@p='test-isnand-nolibm$(EXEEXT)'; \
+	b='test-isnand-nolibm'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-isnanf-nolibm.log: test-isnanf-nolibm$(EXEEXT)
+	@p='test-isnanf-nolibm$(EXEEXT)'; \
+	b='test-isnanf-nolibm'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-isnanl-nolibm.log: test-isnanl-nolibm$(EXEEXT)
+	@p='test-isnanl-nolibm$(EXEEXT)'; \
+	b='test-isnanl-nolibm'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-iswblank.log: test-iswblank$(EXEEXT)
+	@p='test-iswblank$(EXEEXT)'; \
+	b='test-iswblank'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-iswdigit.sh.log: test-iswdigit.sh
+	@p='test-iswdigit.sh'; \
+	b='test-iswdigit.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-iswxdigit.sh.log: test-iswxdigit.sh
+	@p='test-iswxdigit.sh'; \
+	b='test-iswxdigit.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-langinfo.log: test-langinfo$(EXEEXT)
+	@p='test-langinfo$(EXEEXT)'; \
+	b='test-langinfo'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-lchmod.log: test-lchmod$(EXEEXT)
+	@p='test-lchmod$(EXEEXT)'; \
+	b='test-lchmod'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-lchown.log: test-lchown$(EXEEXT)
+	@p='test-lchown$(EXEEXT)'; \
+	b='test-lchown'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-limits-h.log: test-limits-h$(EXEEXT)
+	@p='test-limits-h$(EXEEXT)'; \
+	b='test-limits-h'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-link.log: test-link$(EXEEXT)
+	@p='test-link$(EXEEXT)'; \
+	b='test-link'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-linkat.log: test-linkat$(EXEEXT)
+	@p='test-linkat$(EXEEXT)'; \
+	b='test-linkat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-listen.log: test-listen$(EXEEXT)
+	@p='test-listen$(EXEEXT)'; \
+	b='test-listen'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-locale.log: test-locale$(EXEEXT)
+	@p='test-locale$(EXEEXT)'; \
+	b='test-locale'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-localeconv.log: test-localeconv$(EXEEXT)
+	@p='test-localeconv$(EXEEXT)'; \
+	b='test-localeconv'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-localename.log: test-localename$(EXEEXT)
+	@p='test-localename$(EXEEXT)'; \
+	b='test-localename'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-rwlock1.log: test-rwlock1$(EXEEXT)
+	@p='test-rwlock1$(EXEEXT)'; \
+	b='test-rwlock1'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-lock.log: test-lock$(EXEEXT)
+	@p='test-lock$(EXEEXT)'; \
+	b='test-lock'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-once1.log: test-once1$(EXEEXT)
+	@p='test-once1$(EXEEXT)'; \
+	b='test-once1'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-once2.log: test-once2$(EXEEXT)
+	@p='test-once2$(EXEEXT)'; \
+	b='test-once2'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-lseek.sh.log: test-lseek.sh
+	@p='test-lseek.sh'; \
+	b='test-lseek.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-lstat.log: test-lstat$(EXEEXT)
+	@p='test-lstat$(EXEEXT)'; \
+	b='test-lstat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-malloc-gnu.log: test-malloc-gnu$(EXEEXT)
+	@p='test-malloc-gnu$(EXEEXT)'; \
+	b='test-malloc-gnu'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-malloca.log: test-malloca$(EXEEXT)
+	@p='test-malloca$(EXEEXT)'; \
+	b='test-malloca'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-math.log: test-math$(EXEEXT)
+	@p='test-math$(EXEEXT)'; \
+	b='test-math'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbrtowc1.sh.log: test-mbrtowc1.sh
+	@p='test-mbrtowc1.sh'; \
+	b='test-mbrtowc1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbrtowc2.sh.log: test-mbrtowc2.sh
+	@p='test-mbrtowc2.sh'; \
+	b='test-mbrtowc2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbrtowc3.sh.log: test-mbrtowc3.sh
+	@p='test-mbrtowc3.sh'; \
+	b='test-mbrtowc3.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbrtowc4.sh.log: test-mbrtowc4.sh
+	@p='test-mbrtowc4.sh'; \
+	b='test-mbrtowc4.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbrtowc5.sh.log: test-mbrtowc5.sh
+	@p='test-mbrtowc5.sh'; \
+	b='test-mbrtowc5.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbrtowc-w32-1.sh.log: test-mbrtowc-w32-1.sh
+	@p='test-mbrtowc-w32-1.sh'; \
+	b='test-mbrtowc-w32-1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbrtowc-w32-2.sh.log: test-mbrtowc-w32-2.sh
+	@p='test-mbrtowc-w32-2.sh'; \
+	b='test-mbrtowc-w32-2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbrtowc-w32-3.sh.log: test-mbrtowc-w32-3.sh
+	@p='test-mbrtowc-w32-3.sh'; \
+	b='test-mbrtowc-w32-3.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbrtowc-w32-4.sh.log: test-mbrtowc-w32-4.sh
+	@p='test-mbrtowc-w32-4.sh'; \
+	b='test-mbrtowc-w32-4.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbrtowc-w32-5.sh.log: test-mbrtowc-w32-5.sh
+	@p='test-mbrtowc-w32-5.sh'; \
+	b='test-mbrtowc-w32-5.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbrtowc-w32-6.sh.log: test-mbrtowc-w32-6.sh
+	@p='test-mbrtowc-w32-6.sh'; \
+	b='test-mbrtowc-w32-6.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbrtowc-w32-7.sh.log: test-mbrtowc-w32-7.sh
+	@p='test-mbrtowc-w32-7.sh'; \
+	b='test-mbrtowc-w32-7.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsalign.log: test-mbsalign$(EXEEXT)
+	@p='test-mbsalign$(EXEEXT)'; \
+	b='test-mbsalign'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbscasecmp.sh.log: test-mbscasecmp.sh
+	@p='test-mbscasecmp.sh'; \
+	b='test-mbscasecmp.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbschr.sh.log: test-mbschr.sh
+	@p='test-mbschr.sh'; \
+	b='test-mbschr.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsinit.sh.log: test-mbsinit.sh
+	@p='test-mbsinit.sh'; \
+	b='test-mbsinit.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsrtowcs1.sh.log: test-mbsrtowcs1.sh
+	@p='test-mbsrtowcs1.sh'; \
+	b='test-mbsrtowcs1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsrtowcs2.sh.log: test-mbsrtowcs2.sh
+	@p='test-mbsrtowcs2.sh'; \
+	b='test-mbsrtowcs2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsrtowcs3.sh.log: test-mbsrtowcs3.sh
+	@p='test-mbsrtowcs3.sh'; \
+	b='test-mbsrtowcs3.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsrtowcs4.sh.log: test-mbsrtowcs4.sh
+	@p='test-mbsrtowcs4.sh'; \
+	b='test-mbsrtowcs4.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsstr1.log: test-mbsstr1$(EXEEXT)
+	@p='test-mbsstr1$(EXEEXT)'; \
+	b='test-mbsstr1'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsstr2.sh.log: test-mbsstr2.sh
+	@p='test-mbsstr2.sh'; \
+	b='test-mbsstr2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsstr3.sh.log: test-mbsstr3.sh
+	@p='test-mbsstr3.sh'; \
+	b='test-mbsstr3.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-memcasecmp.log: test-memcasecmp$(EXEEXT)
+	@p='test-memcasecmp$(EXEEXT)'; \
+	b='test-memcasecmp'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-memchr.log: test-memchr$(EXEEXT)
+	@p='test-memchr$(EXEEXT)'; \
+	b='test-memchr'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-memchr2.log: test-memchr2$(EXEEXT)
+	@p='test-memchr2$(EXEEXT)'; \
+	b='test-memchr2'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-memcoll.log: test-memcoll$(EXEEXT)
+	@p='test-memcoll$(EXEEXT)'; \
+	b='test-memcoll'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-memrchr.log: test-memrchr$(EXEEXT)
+	@p='test-memrchr$(EXEEXT)'; \
+	b='test-memrchr'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mkdir.log: test-mkdir$(EXEEXT)
+	@p='test-mkdir$(EXEEXT)'; \
+	b='test-mkdir'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mkfifo.log: test-mkfifo$(EXEEXT)
+	@p='test-mkfifo$(EXEEXT)'; \
+	b='test-mkfifo'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mknod.log: test-mknod$(EXEEXT)
+	@p='test-mknod$(EXEEXT)'; \
+	b='test-mknod'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-nanosleep.log: test-nanosleep$(EXEEXT)
+	@p='test-nanosleep$(EXEEXT)'; \
+	b='test-nanosleep'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-netdb.log: test-netdb$(EXEEXT)
+	@p='test-netdb$(EXEEXT)'; \
+	b='test-netdb'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-netinet_in.log: test-netinet_in$(EXEEXT)
+	@p='test-netinet_in$(EXEEXT)'; \
+	b='test-netinet_in'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-nl_langinfo.sh.log: test-nl_langinfo.sh
+	@p='test-nl_langinfo.sh'; \
+	b='test-nl_langinfo.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-nl_langinfo-mt.log: test-nl_langinfo-mt$(EXEEXT)
+	@p='test-nl_langinfo-mt$(EXEEXT)'; \
+	b='test-nl_langinfo-mt'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-nstrftime.log: test-nstrftime$(EXEEXT)
+	@p='test-nstrftime$(EXEEXT)'; \
+	b='test-nstrftime'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-open.log: test-open$(EXEEXT)
+	@p='test-open$(EXEEXT)'; \
+	b='test-open'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-openat-safer.log: test-openat-safer$(EXEEXT)
+	@p='test-openat-safer$(EXEEXT)'; \
+	b='test-openat-safer'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-openat.log: test-openat$(EXEEXT)
+	@p='test-openat$(EXEEXT)'; \
+	b='test-openat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-parse-datetime.log: test-parse-datetime$(EXEEXT)
+	@p='test-parse-datetime$(EXEEXT)'; \
+	b='test-parse-datetime'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pathmax.log: test-pathmax$(EXEEXT)
+	@p='test-pathmax$(EXEEXT)'; \
+	b='test-pathmax'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-perror.sh.log: test-perror.sh
+	@p='test-perror.sh'; \
+	b='test-perror.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-perror2.log: test-perror2$(EXEEXT)
+	@p='test-perror2$(EXEEXT)'; \
+	b='test-perror2'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pipe.log: test-pipe$(EXEEXT)
+	@p='test-pipe$(EXEEXT)'; \
+	b='test-pipe'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pipe2.log: test-pipe2$(EXEEXT)
+	@p='test-pipe2$(EXEEXT)'; \
+	b='test-pipe2'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-posixtm.log: test-posixtm$(EXEEXT)
+	@p='test-posixtm$(EXEEXT)'; \
+	b='test-posixtm'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-printf-frexp.log: test-printf-frexp$(EXEEXT)
+	@p='test-printf-frexp$(EXEEXT)'; \
+	b='test-printf-frexp'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-printf-frexpl.log: test-printf-frexpl$(EXEEXT)
+	@p='test-printf-frexpl$(EXEEXT)'; \
+	b='test-printf-frexpl'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-priv-set.log: test-priv-set$(EXEEXT)
+	@p='test-priv-set$(EXEEXT)'; \
+	b='test-priv-set'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pthread-cond.log: test-pthread-cond$(EXEEXT)
+	@p='test-pthread-cond$(EXEEXT)'; \
+	b='test-pthread-cond'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pthread.log: test-pthread$(EXEEXT)
+	@p='test-pthread$(EXEEXT)'; \
+	b='test-pthread'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pthread-mutex.log: test-pthread-mutex$(EXEEXT)
+	@p='test-pthread-mutex$(EXEEXT)'; \
+	b='test-pthread-mutex'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pthread-thread.log: test-pthread-thread$(EXEEXT)
+	@p='test-pthread-thread$(EXEEXT)'; \
+	b='test-pthread-thread'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pthread_sigmask1.log: test-pthread_sigmask1$(EXEEXT)
+	@p='test-pthread_sigmask1$(EXEEXT)'; \
+	b='test-pthread_sigmask1'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pthread_sigmask2.log: test-pthread_sigmask2$(EXEEXT)
+	@p='test-pthread_sigmask2$(EXEEXT)'; \
+	b='test-pthread_sigmask2'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-quotearg-simple.log: test-quotearg-simple$(EXEEXT)
+	@p='test-quotearg-simple$(EXEEXT)'; \
+	b='test-quotearg-simple'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-raise.log: test-raise$(EXEEXT)
+	@p='test-raise$(EXEEXT)'; \
+	b='test-raise'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-rand-isaac.log: test-rand-isaac$(EXEEXT)
+	@p='test-rand-isaac$(EXEEXT)'; \
+	b='test-rand-isaac'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-read-file.log: test-read-file$(EXEEXT)
+	@p='test-read-file$(EXEEXT)'; \
+	b='test-read-file'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-read.log: test-read$(EXEEXT)
+	@p='test-read$(EXEEXT)'; \
+	b='test-read'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-readlink.log: test-readlink$(EXEEXT)
+	@p='test-readlink$(EXEEXT)'; \
+	b='test-readlink'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-readlinkat.log: test-readlinkat$(EXEEXT)
+	@p='test-readlinkat$(EXEEXT)'; \
+	b='test-readlinkat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-readtokens.sh.log: test-readtokens.sh
+	@p='test-readtokens.sh'; \
+	b='test-readtokens.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-realloc-gnu.log: test-realloc-gnu$(EXEEXT)
+	@p='test-realloc-gnu$(EXEEXT)'; \
+	b='test-realloc-gnu'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-regex.log: test-regex$(EXEEXT)
+	@p='test-regex$(EXEEXT)'; \
+	b='test-regex'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-remove.log: test-remove$(EXEEXT)
+	@p='test-remove$(EXEEXT)'; \
+	b='test-remove'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-rename.log: test-rename$(EXEEXT)
+	@p='test-rename$(EXEEXT)'; \
+	b='test-rename'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-renameat.log: test-renameat$(EXEEXT)
+	@p='test-renameat$(EXEEXT)'; \
+	b='test-renameat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-renameatu.log: test-renameatu$(EXEEXT)
+	@p='test-renameatu$(EXEEXT)'; \
+	b='test-renameatu'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-rmdir.log: test-rmdir$(EXEEXT)
+	@p='test-rmdir$(EXEEXT)'; \
+	b='test-rmdir'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sched.log: test-sched$(EXEEXT)
+	@p='test-sched$(EXEEXT)'; \
+	b='test-sched'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-select.log: test-select$(EXEEXT)
+	@p='test-select$(EXEEXT)'; \
+	b='test-select'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-select-in.sh.log: test-select-in.sh
+	@p='test-select-in.sh'; \
+	b='test-select-in.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-select-out.sh.log: test-select-out.sh
+	@p='test-select-out.sh'; \
+	b='test-select-out.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-setenv.log: test-setenv$(EXEEXT)
+	@p='test-setenv$(EXEEXT)'; \
+	b='test-setenv'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-setlocale_null.log: test-setlocale_null$(EXEEXT)
+	@p='test-setlocale_null$(EXEEXT)'; \
+	b='test-setlocale_null'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-setlocale_null-mt-one.log: test-setlocale_null-mt-one$(EXEEXT)
+	@p='test-setlocale_null-mt-one$(EXEEXT)'; \
+	b='test-setlocale_null-mt-one'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-setlocale_null-mt-all.log: test-setlocale_null-mt-all$(EXEEXT)
+	@p='test-setlocale_null-mt-all$(EXEEXT)'; \
+	b='test-setlocale_null-mt-all'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-setlocale1.sh.log: test-setlocale1.sh
+	@p='test-setlocale1.sh'; \
+	b='test-setlocale1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-setlocale2.sh.log: test-setlocale2.sh
+	@p='test-setlocale2.sh'; \
+	b='test-setlocale2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-setsockopt.log: test-setsockopt$(EXEEXT)
+	@p='test-setsockopt$(EXEEXT)'; \
+	b='test-setsockopt'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sigaction.log: test-sigaction$(EXEEXT)
+	@p='test-sigaction$(EXEEXT)'; \
+	b='test-sigaction'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-signal-h.log: test-signal-h$(EXEEXT)
+	@p='test-signal-h$(EXEEXT)'; \
+	b='test-signal-h'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-signbit.log: test-signbit$(EXEEXT)
+	@p='test-signbit$(EXEEXT)'; \
+	b='test-signbit'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sigprocmask.log: test-sigprocmask$(EXEEXT)
+	@p='test-sigprocmask$(EXEEXT)'; \
+	b='test-sigprocmask'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sleep.log: test-sleep$(EXEEXT)
+	@p='test-sleep$(EXEEXT)'; \
+	b='test-sleep'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-snprintf.log: test-snprintf$(EXEEXT)
+	@p='test-snprintf$(EXEEXT)'; \
+	b='test-snprintf'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sockets.log: test-sockets$(EXEEXT)
+	@p='test-sockets$(EXEEXT)'; \
+	b='test-sockets'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stat.log: test-stat$(EXEEXT)
+	@p='test-stat$(EXEEXT)'; \
+	b='test-stat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stat-time.log: test-stat-time$(EXEEXT)
+	@p='test-stat-time$(EXEEXT)'; \
+	b='test-stat-time'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-statat.log: test-statat$(EXEEXT)
+	@p='test-statat$(EXEEXT)'; \
+	b='test-statat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stdalign.log: test-stdalign$(EXEEXT)
+	@p='test-stdalign$(EXEEXT)'; \
+	b='test-stdalign'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stdbool.log: test-stdbool$(EXEEXT)
+	@p='test-stdbool$(EXEEXT)'; \
+	b='test-stdbool'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stddef.log: test-stddef$(EXEEXT)
+	@p='test-stddef$(EXEEXT)'; \
+	b='test-stddef'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stdint.log: test-stdint$(EXEEXT)
+	@p='test-stdint$(EXEEXT)'; \
+	b='test-stdint'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stdio.log: test-stdio$(EXEEXT)
+	@p='test-stdio$(EXEEXT)'; \
+	b='test-stdio'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stdlib.log: test-stdlib$(EXEEXT)
+	@p='test-stdlib$(EXEEXT)'; \
+	b='test-stdlib'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strerror.log: test-strerror$(EXEEXT)
+	@p='test-strerror$(EXEEXT)'; \
+	b='test-strerror'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strerror_r.log: test-strerror_r$(EXEEXT)
+	@p='test-strerror_r$(EXEEXT)'; \
+	b='test-strerror_r'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-striconv.log: test-striconv$(EXEEXT)
+	@p='test-striconv$(EXEEXT)'; \
+	b='test-striconv'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-string.log: test-string$(EXEEXT)
+	@p='test-string$(EXEEXT)'; \
+	b='test-string'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strncat.log: test-strncat$(EXEEXT)
+	@p='test-strncat$(EXEEXT)'; \
+	b='test-strncat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strnlen.log: test-strnlen$(EXEEXT)
+	@p='test-strnlen$(EXEEXT)'; \
+	b='test-strnlen'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strsignal.log: test-strsignal$(EXEEXT)
+	@p='test-strsignal$(EXEEXT)'; \
+	b='test-strsignal'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strtod.log: test-strtod$(EXEEXT)
+	@p='test-strtod$(EXEEXT)'; \
+	b='test-strtod'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strtod1.sh.log: test-strtod1.sh
+	@p='test-strtod1.sh'; \
+	b='test-strtod1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strtoimax.log: test-strtoimax$(EXEEXT)
+	@p='test-strtoimax$(EXEEXT)'; \
+	b='test-strtoimax'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strtold.log: test-strtold$(EXEEXT)
+	@p='test-strtold$(EXEEXT)'; \
+	b='test-strtold'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strtold1.sh.log: test-strtold1.sh
+	@p='test-strtold1.sh'; \
+	b='test-strtold1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strtoll.log: test-strtoll$(EXEEXT)
+	@p='test-strtoll$(EXEEXT)'; \
+	b='test-strtoll'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strtoull.log: test-strtoull$(EXEEXT)
+	@p='test-strtoull$(EXEEXT)'; \
+	b='test-strtoull'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strtoumax.log: test-strtoumax$(EXEEXT)
+	@p='test-strtoumax$(EXEEXT)'; \
+	b='test-strtoumax'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-symlink.log: test-symlink$(EXEEXT)
+	@p='test-symlink$(EXEEXT)'; \
+	b='test-symlink'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-symlinkat.log: test-symlinkat$(EXEEXT)
+	@p='test-symlinkat$(EXEEXT)'; \
+	b='test-symlinkat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_ioctl.log: test-sys_ioctl$(EXEEXT)
+	@p='test-sys_ioctl$(EXEEXT)'; \
+	b='test-sys_ioctl'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_resource.log: test-sys_resource$(EXEEXT)
+	@p='test-sys_resource$(EXEEXT)'; \
+	b='test-sys_resource'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_select.log: test-sys_select$(EXEEXT)
+	@p='test-sys_select$(EXEEXT)'; \
+	b='test-sys_select'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_socket.log: test-sys_socket$(EXEEXT)
+	@p='test-sys_socket$(EXEEXT)'; \
+	b='test-sys_socket'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_stat.log: test-sys_stat$(EXEEXT)
+	@p='test-sys_stat$(EXEEXT)'; \
+	b='test-sys_stat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_time.log: test-sys_time$(EXEEXT)
+	@p='test-sys_time$(EXEEXT)'; \
+	b='test-sys_time'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_types.log: test-sys_types$(EXEEXT)
+	@p='test-sys_types$(EXEEXT)'; \
+	b='test-sys_types'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_uio.log: test-sys_uio$(EXEEXT)
+	@p='test-sys_uio$(EXEEXT)'; \
+	b='test-sys_uio'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_utsname.log: test-sys_utsname$(EXEEXT)
+	@p='test-sys_utsname$(EXEEXT)'; \
+	b='test-sys_utsname'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_wait.log: test-sys_wait$(EXEEXT)
+	@p='test-sys_wait$(EXEEXT)'; \
+	b='test-sys_wait'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-termios.log: test-termios$(EXEEXT)
+	@p='test-termios$(EXEEXT)'; \
+	b='test-termios'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-init.sh.log: test-init.sh
+	@p='test-init.sh'; \
+	b='test-init.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-thread_self.log: test-thread_self$(EXEEXT)
+	@p='test-thread_self$(EXEEXT)'; \
+	b='test-thread_self'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-thread_create.log: test-thread_create$(EXEEXT)
+	@p='test-thread_create$(EXEEXT)'; \
+	b='test-thread_create'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-time.log: test-time$(EXEEXT)
+	@p='test-time$(EXEEXT)'; \
+	b='test-time'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-timespec.log: test-timespec$(EXEEXT)
+	@p='test-timespec$(EXEEXT)'; \
+	b='test-timespec'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-tls.log: test-tls$(EXEEXT)
+	@p='test-tls$(EXEEXT)'; \
+	b='test-tls'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-u64.log: test-u64$(EXEEXT)
+	@p='test-u64$(EXEEXT)'; \
+	b='test-u64'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-uname.log: test-uname$(EXEEXT)
+	@p='test-uname$(EXEEXT)'; \
+	b='test-uname'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-dup-safer.log: test-dup-safer$(EXEEXT)
+	@p='test-dup-safer$(EXEEXT)'; \
+	b='test-dup-safer'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-unistd.log: test-unistd$(EXEEXT)
+	@p='test-unistd$(EXEEXT)'; \
+	b='test-unistd'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-u8-mbtoucr.log: test-u8-mbtoucr$(EXEEXT)
+	@p='test-u8-mbtoucr$(EXEEXT)'; \
+	b='test-u8-mbtoucr'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-u8-uctomb.log: test-u8-uctomb$(EXEEXT)
+	@p='test-u8-uctomb$(EXEEXT)'; \
+	b='test-u8-uctomb'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-uc_width.log: test-uc_width$(EXEEXT)
+	@p='test-uc_width$(EXEEXT)'; \
+	b='test-uc_width'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+uniwidth/test-uc_width2.sh.log: uniwidth/test-uc_width2.sh
+	@p='uniwidth/test-uc_width2.sh'; \
+	b='uniwidth/test-uc_width2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-unlink.log: test-unlink$(EXEEXT)
+	@p='test-unlink$(EXEEXT)'; \
+	b='test-unlink'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-unlinkat.log: test-unlinkat$(EXEEXT)
+	@p='test-unlinkat$(EXEEXT)'; \
+	b='test-unlinkat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-unsetenv.log: test-unsetenv$(EXEEXT)
+	@p='test-unsetenv$(EXEEXT)'; \
+	b='test-unsetenv'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-update-copyright.sh.log: test-update-copyright.sh
+	@p='test-update-copyright.sh'; \
+	b='test-update-copyright.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-userspec.log: test-userspec$(EXEEXT)
+	@p='test-userspec$(EXEEXT)'; \
+	b='test-userspec'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-usleep.log: test-usleep$(EXEEXT)
+	@p='test-usleep$(EXEEXT)'; \
+	b='test-usleep'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-utime-h.log: test-utime-h$(EXEEXT)
+	@p='test-utime-h$(EXEEXT)'; \
+	b='test-utime-h'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-utime.log: test-utime$(EXEEXT)
+	@p='test-utime$(EXEEXT)'; \
+	b='test-utime'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-utimens.log: test-utimens$(EXEEXT)
+	@p='test-utimens$(EXEEXT)'; \
+	b='test-utimens'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-utimensat.log: test-utimensat$(EXEEXT)
+	@p='test-utimensat$(EXEEXT)'; \
+	b='test-utimensat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-vasnprintf.log: test-vasnprintf$(EXEEXT)
+	@p='test-vasnprintf$(EXEEXT)'; \
+	b='test-vasnprintf'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-vasprintf-posix.log: test-vasprintf-posix$(EXEEXT)
+	@p='test-vasprintf-posix$(EXEEXT)'; \
+	b='test-vasprintf-posix'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-vasprintf.log: test-vasprintf$(EXEEXT)
+	@p='test-vasprintf$(EXEEXT)'; \
+	b='test-vasprintf'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-vc-list-files-git.sh.log: test-vc-list-files-git.sh
+	@p='test-vc-list-files-git.sh'; \
+	b='test-vc-list-files-git.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-vc-list-files-cvs.sh.log: test-vc-list-files-cvs.sh
+	@p='test-vc-list-files-cvs.sh'; \
+	b='test-vc-list-files-cvs.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-verify.log: test-verify$(EXEEXT)
+	@p='test-verify$(EXEEXT)'; \
+	b='test-verify'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-verify.sh.log: test-verify.sh
+	@p='test-verify.sh'; \
+	b='test-verify.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-version-etc.sh.log: test-version-etc.sh
+	@p='test-version-etc.sh'; \
+	b='test-version-etc.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-vfprintf-posix.sh.log: test-vfprintf-posix.sh
+	@p='test-vfprintf-posix.sh'; \
+	b='test-vfprintf-posix.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-vprintf-posix.sh.log: test-vprintf-posix.sh
+	@p='test-vprintf-posix.sh'; \
+	b='test-vprintf-posix.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wchar.log: test-wchar$(EXEEXT)
+	@p='test-wchar$(EXEEXT)'; \
+	b='test-wchar'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb.sh.log: test-wcrtomb.sh
+	@p='test-wcrtomb.sh'; \
+	b='test-wcrtomb.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb-w32-1.sh.log: test-wcrtomb-w32-1.sh
+	@p='test-wcrtomb-w32-1.sh'; \
+	b='test-wcrtomb-w32-1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb-w32-2.sh.log: test-wcrtomb-w32-2.sh
+	@p='test-wcrtomb-w32-2.sh'; \
+	b='test-wcrtomb-w32-2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb-w32-3.sh.log: test-wcrtomb-w32-3.sh
+	@p='test-wcrtomb-w32-3.sh'; \
+	b='test-wcrtomb-w32-3.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb-w32-4.sh.log: test-wcrtomb-w32-4.sh
+	@p='test-wcrtomb-w32-4.sh'; \
+	b='test-wcrtomb-w32-4.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb-w32-5.sh.log: test-wcrtomb-w32-5.sh
+	@p='test-wcrtomb-w32-5.sh'; \
+	b='test-wcrtomb-w32-5.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb-w32-6.sh.log: test-wcrtomb-w32-6.sh
+	@p='test-wcrtomb-w32-6.sh'; \
+	b='test-wcrtomb-w32-6.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb-w32-7.sh.log: test-wcrtomb-w32-7.sh
+	@p='test-wcrtomb-w32-7.sh'; \
+	b='test-wcrtomb-w32-7.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wctype-h.log: test-wctype-h$(EXEEXT)
+	@p='test-wctype-h$(EXEEXT)'; \
+	b='test-wctype-h'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcwidth.log: test-wcwidth$(EXEEXT)
+	@p='test-wcwidth$(EXEEXT)'; \
+	b='test-wcwidth'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-write.log: test-write$(EXEEXT)
+	@p='test-write$(EXEEXT)'; \
+	b='test-write'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-xalloc-die.sh.log: test-xalloc-die.sh
+	@p='test-xalloc-die.sh'; \
+	b='test-xalloc-die.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-xprintf-posix.sh.log: test-xprintf-posix.sh
+	@p='test-xprintf-posix.sh'; \
+	b='test-xprintf-posix.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='test-xstrtoimax.sh'; \
+	b='test-xstrtoimax.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='test-xstrtol.sh'; \
+	b='test-xstrtol.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	b='test-xstrtoumax.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	b='test-xvasprintf'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='test-yesno.sh'; \
+	b='test-yesno.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-recursive
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+	-test -z "$(MOSTLYCLEANFILES)" || rm -f $(MOSTLYCLEANFILES)
+	-test -z "$(TEST_LOGS)" || rm -f $(TEST_LOGS)
+	-test -z "$(TEST_LOGS:.log=.trs)" || rm -f $(TEST_LOGS:.log=.trs)
+	-test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+	-rm -f glthread/$(DEPDIR)/$(am__dirstamp)
+	-rm -f glthread/$(am__dirstamp)
+	-rm -f unistr/$(DEPDIR)/$(am__dirstamp)
+	-rm -f unistr/$(am__dirstamp)
+	-rm -f uniwidth/$(DEPDIR)/$(am__dirstamp)
+	-rm -f uniwidth/$(am__dirstamp)
+	-test -z "$(DISTCLEANFILES)" || rm -f $(DISTCLEANFILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(BUILT_SOURCES)" || rm -f $(BUILT_SOURCES)
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-recursive
+
+clean-am: clean-binPROGRAMS clean-checkLIBRARIES clean-checkPROGRAMS \
+	clean-generic clean-local clean-noinstLIBRARIES \
+	clean-noinstPROGRAMS clean-pkglibexecPROGRAMS mostlyclean-am
+
+distclean: distclean-recursive
+		-rm -f ./$(DEPDIR)/accept.Po
+	-rm -f ./$(DEPDIR)/bench-md5.Po
+	-rm -f ./$(DEPDIR)/bench-sha1.Po
+	-rm -f ./$(DEPDIR)/bench-sha224.Po
+	-rm -f ./$(DEPDIR)/bench-sha256.Po
+	-rm -f ./$(DEPDIR)/bench-sha384.Po
+	-rm -f ./$(DEPDIR)/bench-sha512.Po
+	-rm -f ./$(DEPDIR)/bind.Po
+	-rm -f ./$(DEPDIR)/connect.Po
+	-rm -f ./$(DEPDIR)/getrusage.Po
+	-rm -f ./$(DEPDIR)/inet_pton.Po
+	-rm -f ./$(DEPDIR)/ioctl.Po
+	-rm -f ./$(DEPDIR)/listen.Po
+	-rm -f ./$(DEPDIR)/locale.Po
+	-rm -f ./$(DEPDIR)/localename-table.Po
+	-rm -f ./$(DEPDIR)/localename.Po
+	-rm -f ./$(DEPDIR)/perror.Po
+	-rm -f ./$(DEPDIR)/randomd.Po
+	-rm -f ./$(DEPDIR)/randoml.Po
+	-rm -f ./$(DEPDIR)/sched_yield.Po
+	-rm -f ./$(DEPDIR)/secure_getenv.Po
+	-rm -f ./$(DEPDIR)/setlocale.Po
+	-rm -f ./$(DEPDIR)/setsockopt.Po
+	-rm -f ./$(DEPDIR)/sleep.Po
+	-rm -f ./$(DEPDIR)/socket.Po
+	-rm -f ./$(DEPDIR)/strerror_r.Po
+	-rm -f ./$(DEPDIR)/test-accept.Po
+	-rm -f ./$(DEPDIR)/test-alignof.Po
+	-rm -f ./$(DEPDIR)/test-alloca-opt.Po
+	-rm -f ./$(DEPDIR)/test-areadlink-with-size.Po
+	-rm -f ./$(DEPDIR)/test-areadlink.Po
+	-rm -f ./$(DEPDIR)/test-areadlinkat.Po
+	-rm -f ./$(DEPDIR)/test-argmatch.Po
+	-rm -f ./$(DEPDIR)/test-argv-iter.Po
+	-rm -f ./$(DEPDIR)/test-arpa_inet.Po
+	-rm -f ./$(DEPDIR)/test-base32.Po
+	-rm -f ./$(DEPDIR)/test-base64.Po
+	-rm -f ./$(DEPDIR)/test-binary-io.Po
+	-rm -f ./$(DEPDIR)/test-bind.Po
+	-rm -f ./$(DEPDIR)/test-bitrotate.Po
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+	-rm -f ./$(DEPDIR)/test-c-strncasecmp.Po
+	-rm -f ./$(DEPDIR)/test-calloc-gnu.Po
+	-rm -f ./$(DEPDIR)/test-canonicalize.Po
+	-rm -f ./$(DEPDIR)/test-chdir.Po
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+	-rm -f ./$(DEPDIR)/test-close.Po
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+	-rm -f ./$(DEPDIR)/test-file-has-acl.Po
+	-rm -f ./$(DEPDIR)/test-filenamecat.Po
+	-rm -f ./$(DEPDIR)/test-filevercmp.Po
+	-rm -f ./$(DEPDIR)/test-float.Po
+	-rm -f ./$(DEPDIR)/test-fnmatch-h.Po
+	-rm -f ./$(DEPDIR)/test-fnmatch.Po
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+	-rm -f ./$(DEPDIR)/test-fopen.Po
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+	-rm -f ./$(DEPDIR)/test-fpurge.Po
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+	-rm -f ./$(DEPDIR)/test-freadseek.Po
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+	-rm -f ./$(DEPDIR)/test-freopen.Po
+	-rm -f ./$(DEPDIR)/test-frexp.Po
+	-rm -f ./$(DEPDIR)/test-frexpl.Po
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+	-rm -f ./$(DEPDIR)/test-fseeko3.Po
+	-rm -f ./$(DEPDIR)/test-fseeko4.Po
+	-rm -f ./$(DEPDIR)/test-fseterr.Po
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+	-rm -f ./$(DEPDIR)/test-fstatat.Po
+	-rm -f ./$(DEPDIR)/test-fsync.Po
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+	-rm -f ./$(DEPDIR)/test-ftell3.Po
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+	-rm -f ./$(DEPDIR)/test-getaddrinfo.Po
+	-rm -f ./$(DEPDIR)/test-getcwd-lgpl.Po
+	-rm -f ./$(DEPDIR)/test-getcwd.Po
+	-rm -f ./$(DEPDIR)/test-getdelim.Po
+	-rm -f ./$(DEPDIR)/test-getdtablesize.Po
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+	-rm -f ./$(DEPDIR)/test-gethostname.Po
+	-rm -f ./$(DEPDIR)/test-getline.Po
+	-rm -f ./$(DEPDIR)/test-getloadavg.Po
+	-rm -f ./$(DEPDIR)/test-getlogin.Po
+	-rm -f ./$(DEPDIR)/test-getndelim2.Po
+	-rm -f ./$(DEPDIR)/test-getopt-gnu.Po
+	-rm -f ./$(DEPDIR)/test-getopt-posix.Po
+	-rm -f ./$(DEPDIR)/test-getprogname.Po
+	-rm -f ./$(DEPDIR)/test-getrusage.Po
+	-rm -f ./$(DEPDIR)/test-gettimeofday.Po
+	-rm -f ./$(DEPDIR)/test-hard-locale.Po
+	-rm -f ./$(DEPDIR)/test-hash.Po
+	-rm -f ./$(DEPDIR)/test-i-ring.Po
+	-rm -f ./$(DEPDIR)/test-iconv-h.Po
+	-rm -f ./$(DEPDIR)/test-iconv.Po
+	-rm -f ./$(DEPDIR)/test-ignore-value.Po
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+	-rm -f ./$(DEPDIR)/test-inet_pton.Po
+	-rm -f ./$(DEPDIR)/test-ino-map.Po
+	-rm -f ./$(DEPDIR)/test-intprops.Po
+	-rm -f ./$(DEPDIR)/test-inttostr.Po
+	-rm -f ./$(DEPDIR)/test-inttypes.Po
+	-rm -f ./$(DEPDIR)/test-ioctl.Po
+	-rm -f ./$(DEPDIR)/test-isatty.Po
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+	-rm -f ./$(DEPDIR)/test-isnand-nolibm.Po
+	-rm -f ./$(DEPDIR)/test-isnanf-nolibm.Po
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+	-rm -f ./$(DEPDIR)/test-limits-h.Po
+	-rm -f ./$(DEPDIR)/test-link.Po
+	-rm -f ./$(DEPDIR)/test-linkat.Po
+	-rm -f ./$(DEPDIR)/test-listen.Po
+	-rm -f ./$(DEPDIR)/test-localcharset.Po
+	-rm -f ./$(DEPDIR)/test-locale.Po
+	-rm -f ./$(DEPDIR)/test-localeconv.Po
+	-rm -f ./$(DEPDIR)/test-localename.Po
+	-rm -f ./$(DEPDIR)/test-lseek.Po
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+	-rm -f ./$(DEPDIR)/test-malloc-gnu.Po
+	-rm -f ./$(DEPDIR)/test-malloca.Po
+	-rm -f ./$(DEPDIR)/test-math.Po
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+	-rm -f ./$(DEPDIR)/test-mbsalign.Po
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+	-rm -f ./$(DEPDIR)/test-memcasecmp.Po
+	-rm -f ./$(DEPDIR)/test-memchr.Po
+	-rm -f ./$(DEPDIR)/test-memchr2.Po
+	-rm -f ./$(DEPDIR)/test-memcoll.Po
+	-rm -f ./$(DEPDIR)/test-memrchr.Po
+	-rm -f ./$(DEPDIR)/test-mkdir.Po
+	-rm -f ./$(DEPDIR)/test-mkfifo.Po
+	-rm -f ./$(DEPDIR)/test-mknod.Po
+	-rm -f ./$(DEPDIR)/test-nanosleep.Po
+	-rm -f ./$(DEPDIR)/test-netdb.Po
+	-rm -f ./$(DEPDIR)/test-netinet_in.Po
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+	-rm -f ./$(DEPDIR)/test-nl_langinfo.Po
+	-rm -f ./$(DEPDIR)/test-nstrftime.Po
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+	-rm -f ./$(DEPDIR)/test-pathmax.Po
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+	-rm -f ./$(DEPDIR)/test-pthread-thread.Po
+	-rm -f ./$(DEPDIR)/test-pthread.Po
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+	-rm -f ./$(DEPDIR)/test-read-file.Po
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+	-rm -f ./$(DEPDIR)/test-vasprintf-posix.Po
+	-rm -f ./$(DEPDIR)/test-vasprintf.Po
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+	-rm -f ./$(DEPDIR)/test-version-etc.Po
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+	-rm -f ./$(DEPDIR)/test-vprintf-posix.Po
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+	-rm -f uniwidth/$(DEPDIR)/test-uc_width.Po
+	-rm -f uniwidth/$(DEPDIR)/test-uc_width2.Po
+	-rm -f Makefile
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+	distclean-tags
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+dvi-am:
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+html: html-recursive
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+
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+
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+
+install-info-am:
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+
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+
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+		-rm -f ./$(DEPDIR)/accept.Po
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+	-rm -f ./$(DEPDIR)/ioctl.Po
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+	-rm -f ./$(DEPDIR)/locale.Po
+	-rm -f ./$(DEPDIR)/localename-table.Po
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+	-rm -f ./$(DEPDIR)/test-gettimeofday.Po
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+	-rm -f ./$(DEPDIR)/test-hash.Po
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+	-rm -f ./$(DEPDIR)/test-ignore-value.Po
+	-rm -f ./$(DEPDIR)/test-inet_ntop.Po
+	-rm -f ./$(DEPDIR)/test-inet_pton.Po
+	-rm -f ./$(DEPDIR)/test-ino-map.Po
+	-rm -f ./$(DEPDIR)/test-intprops.Po
+	-rm -f ./$(DEPDIR)/test-inttostr.Po
+	-rm -f ./$(DEPDIR)/test-inttypes.Po
+	-rm -f ./$(DEPDIR)/test-ioctl.Po
+	-rm -f ./$(DEPDIR)/test-isatty.Po
+	-rm -f ./$(DEPDIR)/test-isblank.Po
+	-rm -f ./$(DEPDIR)/test-isnand-nolibm.Po
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+	-rm -f ./$(DEPDIR)/test-langinfo.Po
+	-rm -f ./$(DEPDIR)/test-lchmod.Po
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+	-rm -f ./$(DEPDIR)/test-limits-h.Po
+	-rm -f ./$(DEPDIR)/test-link.Po
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+	-rm -f ./$(DEPDIR)/test-listen.Po
+	-rm -f ./$(DEPDIR)/test-localcharset.Po
+	-rm -f ./$(DEPDIR)/test-locale.Po
+	-rm -f ./$(DEPDIR)/test-localeconv.Po
+	-rm -f ./$(DEPDIR)/test-localename.Po
+	-rm -f ./$(DEPDIR)/test-lseek.Po
+	-rm -f ./$(DEPDIR)/test-lstat.Po
+	-rm -f ./$(DEPDIR)/test-malloc-gnu.Po
+	-rm -f ./$(DEPDIR)/test-malloca.Po
+	-rm -f ./$(DEPDIR)/test-math.Po
+	-rm -f ./$(DEPDIR)/test-mbrtowc-w32.Po
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+	-rm -f ./$(DEPDIR)/test-mbsalign.Po
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+	-rm -f ./$(DEPDIR)/test-mbschr.Po
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+	-rm -f ./$(DEPDIR)/test-mbsrtowcs.Po
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+	-rm -f ./$(DEPDIR)/test-mbsstr2.Po
+	-rm -f ./$(DEPDIR)/test-mbsstr3.Po
+	-rm -f ./$(DEPDIR)/test-md5.Po
+	-rm -f ./$(DEPDIR)/test-memcasecmp.Po
+	-rm -f ./$(DEPDIR)/test-memchr.Po
+	-rm -f ./$(DEPDIR)/test-memchr2.Po
+	-rm -f ./$(DEPDIR)/test-memcoll.Po
+	-rm -f ./$(DEPDIR)/test-memrchr.Po
+	-rm -f ./$(DEPDIR)/test-mkdir.Po
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+	-rm -f ./$(DEPDIR)/test-nanosleep.Po
+	-rm -f ./$(DEPDIR)/test-netdb.Po
+	-rm -f ./$(DEPDIR)/test-netinet_in.Po
+	-rm -f ./$(DEPDIR)/test-nl_langinfo-mt.Po
+	-rm -f ./$(DEPDIR)/test-nl_langinfo.Po
+	-rm -f ./$(DEPDIR)/test-nstrftime.Po
+	-rm -f ./$(DEPDIR)/test-once.Po
+	-rm -f ./$(DEPDIR)/test-open.Po
+	-rm -f ./$(DEPDIR)/test-openat-safer.Po
+	-rm -f ./$(DEPDIR)/test-openat.Po
+	-rm -f ./$(DEPDIR)/test-parse-datetime.Po
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+	-rm -f ./$(DEPDIR)/test-posixtm.Po
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+	-rm -f ./$(DEPDIR)/test-pthread_sigmask2.Po
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+	-rm -f ./$(DEPDIR)/test-raise.Po
+	-rm -f ./$(DEPDIR)/test-rand-isaac.Po
+	-rm -f ./$(DEPDIR)/test-read-file.Po
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+	-rm -f ./$(DEPDIR)/test_lock-test-lock.Po
+	-rm -f ./$(DEPDIR)/test_tls-test-tls.Po
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+	-rm -f ./$(DEPDIR)/timespec-add.Po
+	-rm -f ./$(DEPDIR)/timespec-sub.Po
+	-rm -f ./$(DEPDIR)/tmpdir.Po
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+	-rm -f ./$(DEPDIR)/usleep.Po
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+	-rm -f glthread/$(DEPDIR)/thread.Po
+	-rm -f unistr/$(DEPDIR)/test-u8-mbtoucr.Po
+	-rm -f unistr/$(DEPDIR)/test-u8-uctomb.Po
+	-rm -f uniwidth/$(DEPDIR)/test-uc_width.Po
+	-rm -f uniwidth/$(DEPDIR)/test-uc_width2.Po
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-local
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am: uninstall-binPROGRAMS uninstall-man \
+	uninstall-pkglibexecPROGRAMS
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+uninstall-man: uninstall-man1
+
+.MAKE: $(am__recursive_targets) all check check-am install install-am \
+	install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am \
+	am--depfiles check check-TESTS check-am clean \
+	clean-binPROGRAMS clean-checkLIBRARIES clean-checkPROGRAMS \
+	clean-generic clean-local clean-noinstLIBRARIES \
+	clean-noinstPROGRAMS clean-pkglibexecPROGRAMS cscopelist-am \
+	ctags ctags-am distclean distclean-compile distclean-generic \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-binPROGRAMS install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-man1 install-pdf \
+	install-pdf-am install-pkglibexecPROGRAMS install-ps \
+	install-ps-am install-strip installcheck installcheck-am \
+	installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic mostlyclean-local pdf pdf-am ps ps-am \
+	recheck tags tags-am uninstall uninstall-am \
+	uninstall-binPROGRAMS uninstall-man uninstall-man1 \
+	uninstall-pkglibexecPROGRAMS
+
+.PRECIOUS: Makefile
+
+
+# Clean up after Solaris cc.
+clean-local:
+	rm -rf SunWS_cache
+
+mostlyclean-local: mostlyclean-generic
+	@for dir in '' $(MOSTLYCLEANDIRS); do \
+	  if test -n "$$dir" && test -d $$dir; then \
+	    echo "rmdir $$dir"; rmdir $$dir; \
+	  fi; \
+	done; \
+	:
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/gnulib-tests/_Noreturn.h b/gnulib-tests/_Noreturn.h
new file mode 100644
index 0000000..394ca3c
--- /dev/null
+++ b/gnulib-tests/_Noreturn.h
@@ -0,0 +1,43 @@
+/* A C macro for declaring that a function does not return.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _Noreturn
+# if (defined __cplusplus \
+      && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
+          || (defined _MSC_VER && 1900 <= _MSC_VER)) \
+      && 0)
+    /* [[noreturn]] is not practically usable, because with it the syntax
+         extern _Noreturn void func (...);
+       would not be valid; such a declaration would only be valid with 'extern'
+       and '_Noreturn' swapped, or without the 'extern' keyword.  However, some
+       AIX system header files and several gnulib header files use precisely
+       this syntax with 'extern'.  */
+#  define _Noreturn [[noreturn]]
+# elif ((!defined __cplusplus || defined __clang__)                     \
+        && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0)  \
+            || 4 < __GNUC__ + (7 <= __GNUC_MINOR__) \
+            || (defined __apple_build_version__ \
+                ? 6000000 <= __apple_build_version__ \
+                : 3 < __clang_major__ + (5 <= __clang_minor__))))
+   /* _Noreturn works as-is.  */
+# elif 2 < __GNUC__ + (8 <= __GNUC_MINOR__) || 0x5110 <= __SUNPRO_C
+#  define _Noreturn __attribute__ ((__noreturn__))
+# elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
+#  define _Noreturn __declspec (noreturn)
+# else
+#  define _Noreturn
+# endif
+#endif
diff --git a/gnulib-tests/accept.c b/gnulib-tests/accept.c
new file mode 100644
index 0000000..9be0211
--- /dev/null
+++ b/gnulib-tests/accept.c
@@ -0,0 +1,52 @@
+/* accept.c --- wrappers for Windows accept function
+
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef accept
+
+int
+rpl_accept (int fd, struct sockaddr *addr, socklen_t *addrlen)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      SOCKET fh = accept (sock, addr, addrlen);
+      if (fh == INVALID_SOCKET)
+        {
+          set_winsock_errno ();
+          return -1;
+        }
+      else
+        return SOCKET_TO_FD (fh);
+    }
+}
diff --git a/gnulib-tests/arg-nonnull.h b/gnulib-tests/arg-nonnull.h
new file mode 100644
index 0000000..ac26ca8
--- /dev/null
+++ b/gnulib-tests/arg-nonnull.h
@@ -0,0 +1,26 @@
+/* A C macro for declaring that specific arguments must not be NULL.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools
+   that the values passed as arguments n, ..., m must be non-NULL pointers.
+   n = 1 stands for the first argument, n = 2 for the second argument etc.  */
+#ifndef _GL_ARG_NONNULL
+# if (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || __GNUC__ > 3
+#  define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params))
+# else
+#  define _GL_ARG_NONNULL(params)
+# endif
+#endif
diff --git a/gnulib-tests/bench-digest.h b/gnulib-tests/bench-digest.h
new file mode 100644
index 0000000..c0a1cd9
--- /dev/null
+++ b/gnulib-tests/bench-digest.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2018-2020 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/resource.h>
+#include <sys/time.h>
+
+struct timings_state
+{
+  /* Filled when the timings start.  */
+  struct timeval real_start;
+  struct timeval user_start;
+  struct timeval sys_start;
+  /* Filled when the timings end.  */
+  long real_usec;
+  long user_usec;
+  long sys_usec;
+};
+
+static void
+timing_start (struct timings_state *ts)
+{
+  struct rusage usage;
+
+  getrusage (RUSAGE_SELF, &usage);
+  ts->user_start = usage.ru_utime;
+  ts->sys_start = usage.ru_stime;
+
+  gettimeofday (&ts->real_start, NULL);
+}
+
+static void
+timing_end (struct timings_state *ts)
+{
+  struct timeval real_end;
+  struct rusage usage;
+
+  gettimeofday (&real_end, NULL);
+
+  getrusage (RUSAGE_SELF, &usage);
+
+  ts->real_usec = (real_end.tv_sec - ts->real_start.tv_sec) * 1000000
+                  + real_end.tv_usec - ts->real_start.tv_usec;
+  ts->user_usec = (usage.ru_utime.tv_sec - ts->user_start.tv_sec) * 1000000
+                  + usage.ru_utime.tv_usec - ts->user_start.tv_usec;
+  ts->sys_usec = (usage.ru_stime.tv_sec - ts->sys_start.tv_sec) * 1000000
+                 + usage.ru_stime.tv_usec - ts->sys_start.tv_usec;
+}
+
+static void
+timing_output (const struct timings_state *ts)
+{
+  printf ("real %10.6f\n", (double)ts->real_usec / 1000000.0);
+  printf ("user %7.3f\n", (double)ts->user_usec / 1000000.0);
+  printf ("sys  %7.3f\n", (double)ts->sys_usec / 1000000.0);
+}
+
+int
+main (int argc, char *argv[])
+{
+  if (argc != 3)
+    {
+      fprintf (stderr, "Usage: %s SIZE REPETITIONS\n", argv[0]);
+      exit (1);
+    }
+
+  size_t size = atol (argv[1]);
+  int repeat = atoi (argv[2]);
+
+  char *memblock = (char *) malloc (size);
+
+  /* Fill the memory block.  */
+  {
+    size_t i;
+    for (i = 0; i < size; i++)
+      memblock[i] =
+        (unsigned char) (((i * (i-1) * (i-5)) >> 6) + (i % 499) + (i % 101));
+  }
+
+  struct timings_state ts;
+  timing_start (&ts);
+
+  int count;
+  for (count = 0; count < repeat; count++)
+    {
+      char digest[64];
+      FUNC (memblock, size, digest);
+    }
+
+  timing_end (&ts);
+  timing_output (&ts);
+
+  return 0;
+}
diff --git a/gnulib-tests/bench-md5.c b/gnulib-tests/bench-md5.c
new file mode 100644
index 0000000..5e40f75
--- /dev/null
+++ b/gnulib-tests/bench-md5.c
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2018-2020 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Benchmark program for the md5_buffer function.  */
+
+#include <config.h>
+
+#include "md5.h"
+
+#define FUNC md5_buffer
+#include "bench-digest.h"
diff --git a/gnulib-tests/bench-sha1.c b/gnulib-tests/bench-sha1.c
new file mode 100644
index 0000000..842ce05
--- /dev/null
+++ b/gnulib-tests/bench-sha1.c
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2018-2020 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Benchmark program for the sha1_buffer function.  */
+
+#include <config.h>
+
+#include "sha1.h"
+
+#define FUNC sha1_buffer
+#include "bench-digest.h"
diff --git a/gnulib-tests/bench-sha224.c b/gnulib-tests/bench-sha224.c
new file mode 100644
index 0000000..d2519ec
--- /dev/null
+++ b/gnulib-tests/bench-sha224.c
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2018-2020 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Benchmark program for the sha224_buffer function.  */
+
+#include <config.h>
+
+#include "sha256.h"
+
+#define FUNC sha224_buffer
+#include "bench-digest.h"
diff --git a/gnulib-tests/bench-sha256.c b/gnulib-tests/bench-sha256.c
new file mode 100644
index 0000000..c2bf648
--- /dev/null
+++ b/gnulib-tests/bench-sha256.c
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2018-2020 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Benchmark program for the sha256_buffer function.  */
+
+#include <config.h>
+
+#include "sha256.h"
+
+#define FUNC sha256_buffer
+#include "bench-digest.h"
diff --git a/gnulib-tests/bench-sha384.c b/gnulib-tests/bench-sha384.c
new file mode 100644
index 0000000..4397e0d
--- /dev/null
+++ b/gnulib-tests/bench-sha384.c
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2018-2020 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Benchmark program for the sha384_buffer function.  */
+
+#include <config.h>
+
+#include "sha512.h"
+
+#define FUNC sha384_buffer
+#include "bench-digest.h"
diff --git a/gnulib-tests/bench-sha512.c b/gnulib-tests/bench-sha512.c
new file mode 100644
index 0000000..513c69a
--- /dev/null
+++ b/gnulib-tests/bench-sha512.c
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2018-2020 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Benchmark program for the sha512_buffer function.  */
+
+#include <config.h>
+
+#include "sha512.h"
+
+#define FUNC sha512_buffer
+#include "bench-digest.h"
diff --git a/gnulib-tests/bind.c b/gnulib-tests/bind.c
new file mode 100644
index 0000000..3c60a76
--- /dev/null
+++ b/gnulib-tests/bind.c
@@ -0,0 +1,49 @@
+/* bind.c --- wrappers for Windows bind function
+
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef bind
+
+int
+rpl_bind (int fd, const struct sockaddr *sockaddr, socklen_t len)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      int r = bind (sock, sockaddr, len);
+      if (r < 0)
+        set_winsock_errno ();
+
+      return r;
+    }
+}
diff --git a/gnulib-tests/c++defs.h b/gnulib-tests/c++defs.h
new file mode 100644
index 0000000..3e6aaab
--- /dev/null
+++ b/gnulib-tests/c++defs.h
@@ -0,0 +1,313 @@
+/* C++ compatible function declaration macros.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_CXXDEFS_H
+#define _GL_CXXDEFS_H
+
+/* Begin/end the GNULIB_NAMESPACE namespace.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_BEGIN_NAMESPACE namespace GNULIB_NAMESPACE {
+# define _GL_END_NAMESPACE }
+#else
+# define _GL_BEGIN_NAMESPACE
+# define _GL_END_NAMESPACE
+#endif
+
+/* The three most frequent use cases of these macros are:
+
+   * For providing a substitute for a function that is missing on some
+     platforms, but is declared and works fine on the platforms on which
+     it exists:
+
+       #if @GNULIB_FOO@
+       # if !@HAVE_FOO@
+       _GL_FUNCDECL_SYS (foo, ...);
+       # endif
+       _GL_CXXALIAS_SYS (foo, ...);
+       _GL_CXXALIASWARN (foo);
+       #elif defined GNULIB_POSIXCHECK
+       ...
+       #endif
+
+   * For providing a replacement for a function that exists on all platforms,
+     but is broken/insufficient and needs to be replaced on some platforms:
+
+       #if @GNULIB_FOO@
+       # if @REPLACE_FOO@
+       #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+       #   undef foo
+       #   define foo rpl_foo
+       #  endif
+       _GL_FUNCDECL_RPL (foo, ...);
+       _GL_CXXALIAS_RPL (foo, ...);
+       # else
+       _GL_CXXALIAS_SYS (foo, ...);
+       # endif
+       _GL_CXXALIASWARN (foo);
+       #elif defined GNULIB_POSIXCHECK
+       ...
+       #endif
+
+   * For providing a replacement for a function that exists on some platforms
+     but is broken/insufficient and needs to be replaced on some of them and
+     is additionally either missing or undeclared on some other platforms:
+
+       #if @GNULIB_FOO@
+       # if @REPLACE_FOO@
+       #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+       #   undef foo
+       #   define foo rpl_foo
+       #  endif
+       _GL_FUNCDECL_RPL (foo, ...);
+       _GL_CXXALIAS_RPL (foo, ...);
+       # else
+       #  if !@HAVE_FOO@   or   if !@HAVE_DECL_FOO@
+       _GL_FUNCDECL_SYS (foo, ...);
+       #  endif
+       _GL_CXXALIAS_SYS (foo, ...);
+       # endif
+       _GL_CXXALIASWARN (foo);
+       #elif defined GNULIB_POSIXCHECK
+       ...
+       #endif
+*/
+
+/* _GL_EXTERN_C declaration;
+   performs the declaration with C linkage.  */
+#if defined __cplusplus
+# define _GL_EXTERN_C extern "C"
+#else
+# define _GL_EXTERN_C extern
+#endif
+
+/* _GL_FUNCDECL_RPL (func, rettype, parameters_and_attributes);
+   declares a replacement function, named rpl_func, with the given prototype,
+   consisting of return type, parameters, and attributes.
+   Example:
+     _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
+                                  _GL_ARG_NONNULL ((1)));
+ */
+#define _GL_FUNCDECL_RPL(func,rettype,parameters_and_attributes) \
+  _GL_FUNCDECL_RPL_1 (rpl_##func, rettype, parameters_and_attributes)
+#define _GL_FUNCDECL_RPL_1(rpl_func,rettype,parameters_and_attributes) \
+  _GL_EXTERN_C rettype rpl_func parameters_and_attributes
+
+/* _GL_FUNCDECL_SYS (func, rettype, parameters_and_attributes);
+   declares the system function, named func, with the given prototype,
+   consisting of return type, parameters, and attributes.
+   Example:
+     _GL_FUNCDECL_SYS (open, int, (const char *filename, int flags, ...)
+                                  _GL_ARG_NONNULL ((1)));
+ */
+#define _GL_FUNCDECL_SYS(func,rettype,parameters_and_attributes) \
+  _GL_EXTERN_C rettype func parameters_and_attributes
+
+/* _GL_CXXALIAS_RPL (func, rettype, parameters);
+   declares a C++ alias called GNULIB_NAMESPACE::func
+   that redirects to rpl_func, if GNULIB_NAMESPACE is defined.
+   Example:
+     _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
+
+   Wrapping rpl_func in an object with an inline conversion operator
+   avoids a reference to rpl_func unless GNULIB_NAMESPACE::func is
+   actually used in the program.  */
+#define _GL_CXXALIAS_RPL(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_1 (func, rpl_##func, rettype, parameters)
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
+    namespace GNULIB_NAMESPACE                                \
+    {                                                         \
+      static const struct _gl_ ## func ## _wrapper            \
+      {                                                       \
+        typedef rettype (*type) parameters;                   \
+                                                              \
+        inline operator type () const                         \
+        {                                                     \
+          return ::rpl_func;                                  \
+        }                                                     \
+      } func = {};                                            \
+    }                                                         \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_RPL_CAST_1 (func, rpl_func, rettype, parameters);
+   is like  _GL_CXXALIAS_RPL_1 (func, rpl_func, rettype, parameters);
+   except that the C function rpl_func may have a slightly different
+   declaration.  A cast is used to silence the "invalid conversion" error
+   that would otherwise occur.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
+    namespace GNULIB_NAMESPACE                                     \
+    {                                                              \
+      static const struct _gl_ ## func ## _wrapper                 \
+      {                                                            \
+        typedef rettype (*type) parameters;                        \
+                                                                   \
+        inline operator type () const                              \
+        {                                                          \
+          return reinterpret_cast<type>(::rpl_func);               \
+        }                                                          \
+      } func = {};                                                 \
+    }                                                              \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_SYS (func, rettype, parameters);
+   declares a C++ alias called GNULIB_NAMESPACE::func
+   that redirects to the system provided function func, if GNULIB_NAMESPACE
+   is defined.
+   Example:
+     _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
+
+   Wrapping func in an object with an inline conversion operator
+   avoids a reference to func unless GNULIB_NAMESPACE::func is
+   actually used in the program.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_SYS(func,rettype,parameters)            \
+    namespace GNULIB_NAMESPACE                                \
+    {                                                         \
+      static const struct _gl_ ## func ## _wrapper            \
+      {                                                       \
+        typedef rettype (*type) parameters;                   \
+                                                              \
+        inline operator type () const                         \
+        {                                                     \
+          return ::func;                                      \
+        }                                                     \
+      } func = {};                                            \
+    }                                                         \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS(func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_SYS_CAST (func, rettype, parameters);
+   is like  _GL_CXXALIAS_SYS (func, rettype, parameters);
+   except that the C function func may have a slightly different declaration.
+   A cast is used to silence the "invalid conversion" error that would
+   otherwise occur.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
+    namespace GNULIB_NAMESPACE                          \
+    {                                                   \
+      static const struct _gl_ ## func ## _wrapper      \
+      {                                                 \
+        typedef rettype (*type) parameters;             \
+                                                        \
+        inline operator type () const                   \
+        {                                               \
+          return reinterpret_cast<type>(::func);        \
+        }                                               \
+      } func = {};                                      \
+    }                                                   \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_SYS_CAST2 (func, rettype, parameters, rettype2, parameters2);
+   is like  _GL_CXXALIAS_SYS (func, rettype, parameters);
+   except that the C function is picked among a set of overloaded functions,
+   namely the one with rettype2 and parameters2.  Two consecutive casts
+   are used to silence the "cannot find a match" and "invalid conversion"
+   errors that would otherwise occur.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+  /* The outer cast must be a reinterpret_cast.
+     The inner cast: When the function is defined as a set of overloaded
+     functions, it works as a static_cast<>, choosing the designated variant.
+     When the function is defined as a single variant, it works as a
+     reinterpret_cast<>. The parenthesized cast syntax works both ways.  */
+# define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
+    namespace GNULIB_NAMESPACE                                                \
+    {                                                                         \
+      static const struct _gl_ ## func ## _wrapper                            \
+      {                                                                       \
+        typedef rettype (*type) parameters;                                   \
+                                                                              \
+        inline operator type () const                                         \
+        {                                                                     \
+          return reinterpret_cast<type>((rettype2 (*) parameters2)(::func));  \
+        }                                                                     \
+      } func = {};                                                            \
+    }                                                                         \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIASWARN (func);
+   causes a warning to be emitted when ::func is used but not when
+   GNULIB_NAMESPACE::func is used.  func must be defined without overloaded
+   variants.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIASWARN(func) \
+   _GL_CXXALIASWARN_1 (func, GNULIB_NAMESPACE)
+# define _GL_CXXALIASWARN_1(func,namespace) \
+   _GL_CXXALIASWARN_2 (func, namespace)
+/* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
+   we enable the warning only when not optimizing.  */
+# if !__OPTIMIZE__
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+    _GL_WARN_ON_USE (func, \
+                     "The symbol ::" #func " refers to the system function. " \
+                     "Use " #namespace "::" #func " instead.")
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+     extern __typeof__ (func) func
+# else
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+     _GL_EXTERN_C int _gl_cxxalias_dummy
+# endif
+#else
+# define _GL_CXXALIASWARN(func) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIASWARN1 (func, rettype, parameters_and_attributes);
+   causes a warning to be emitted when the given overloaded variant of ::func
+   is used but not when GNULIB_NAMESPACE::func is used.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
+   _GL_CXXALIASWARN1_1 (func, rettype, parameters_and_attributes, \
+                        GNULIB_NAMESPACE)
+# define _GL_CXXALIASWARN1_1(func,rettype,parameters_and_attributes,namespace) \
+   _GL_CXXALIASWARN1_2 (func, rettype, parameters_and_attributes, namespace)
+/* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
+   we enable the warning only when not optimizing.  */
+# if !__OPTIMIZE__
+#  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
+    _GL_WARN_ON_USE_CXX (func, rettype, parameters_and_attributes, \
+                         "The symbol ::" #func " refers to the system function. " \
+                         "Use " #namespace "::" #func " instead.")
+# else
+#  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
+     _GL_EXTERN_C int _gl_cxxalias_dummy
+# endif
+#else
+# define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+#endif /* _GL_CXXDEFS_H */
diff --git a/gnulib-tests/connect.c b/gnulib-tests/connect.c
new file mode 100644
index 0000000..aaf36c8
--- /dev/null
+++ b/gnulib-tests/connect.c
@@ -0,0 +1,56 @@
+/* connect.c --- wrappers for Windows connect function
+
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef connect
+
+int
+rpl_connect (int fd, const struct sockaddr *sockaddr, socklen_t len)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      int r = connect (sock, sockaddr, len);
+      if (r < 0)
+        {
+          /* EINPROGRESS is not returned by WinSock 2.0; for backwards
+             compatibility, connect(2) uses EWOULDBLOCK.  */
+          if (WSAGetLastError () == WSAEWOULDBLOCK)
+            WSASetLastError (WSAEINPROGRESS);
+
+          set_winsock_errno ();
+        }
+
+      return r;
+    }
+}
diff --git a/gnulib-tests/getrusage.c b/gnulib-tests/getrusage.c
new file mode 100644
index 0000000..5d302d5
--- /dev/null
+++ b/gnulib-tests/getrusage.c
@@ -0,0 +1,131 @@
+/* getrusage replacement for systems which lack it.
+
+   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible, 2012.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <sys/resource.h>
+
+#include <errno.h>
+#include <string.h>
+
+/* Get uint64_t.  */
+#include <stdint.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+
+#else
+
+# include <sys/times.h>
+# include <unistd.h>
+#endif
+
+int
+getrusage (int who, struct rusage *usage_p)
+{
+  if (who == RUSAGE_SELF || who == RUSAGE_CHILDREN)
+    {
+      /* Clear all unsupported members of 'struct rusage'.  */
+      memset (usage_p, '\0', sizeof (struct rusage));
+
+#if defined _WIN32 && ! defined __CYGWIN__
+      if (who == RUSAGE_SELF)
+        {
+          /* Fill in the ru_utime and ru_stime members.  */
+          FILETIME creation_time;
+          FILETIME exit_time;
+          FILETIME kernel_time;
+          FILETIME user_time;
+
+          if (GetProcessTimes (GetCurrentProcess (),
+                               &creation_time, &exit_time,
+                               &kernel_time, &user_time))
+            {
+              /* Convert to microseconds, rounding.  */
+              uint64_t kernel_usec =
+                ((((uint64_t) kernel_time.dwHighDateTime << 32)
+                  | (uint64_t) kernel_time.dwLowDateTime)
+                 + 5) / 10;
+              uint64_t user_usec =
+                ((((uint64_t) user_time.dwHighDateTime << 32)
+                  | (uint64_t) user_time.dwLowDateTime)
+                 + 5) / 10;
+
+              usage_p->ru_utime.tv_sec = user_usec / 1000000U;
+              usage_p->ru_utime.tv_usec = user_usec % 1000000U;
+              usage_p->ru_stime.tv_sec = kernel_usec / 1000000U;
+              usage_p->ru_stime.tv_usec = kernel_usec % 1000000U;
+            }
+        }
+#else
+      /* Fill in the ru_utime and ru_stime members.  */
+      {
+        struct tms time;
+
+        if (times (&time) != (clock_t) -1)
+          {
+            /* Number of clock ticks per second.  */
+            unsigned int clocks_per_second = sysconf (_SC_CLK_TCK);
+
+            if (clocks_per_second > 0)
+              {
+                clock_t user_ticks;
+                clock_t system_ticks;
+
+                uint64_t user_usec;
+                uint64_t system_usec;
+
+                if (who == RUSAGE_CHILDREN)
+                  {
+                    user_ticks   = time.tms_cutime;
+                    system_ticks = time.tms_cstime;
+                  }
+                else
+                  {
+                    user_ticks   = time.tms_utime;
+                    system_ticks = time.tms_stime;
+                  }
+
+                user_usec =
+                  (((uint64_t) user_ticks * (uint64_t) 1000000U)
+                   + clocks_per_second / 2) / clocks_per_second;
+                system_usec =
+                  (((uint64_t) system_ticks * (uint64_t) 1000000U)
+                   + clocks_per_second / 2) / clocks_per_second;
+
+                usage_p->ru_utime.tv_sec = user_usec / 1000000U;
+                usage_p->ru_utime.tv_usec = user_usec % 1000000U;
+                usage_p->ru_stime.tv_sec = system_usec / 1000000U;
+                usage_p->ru_stime.tv_usec = system_usec % 1000000U;
+              }
+          }
+      }
+#endif
+
+      return 0;
+    }
+  else
+    {
+      errno = EINVAL;
+      return -1;
+    }
+}
diff --git a/gnulib-tests/glthread/thread.c b/gnulib-tests/glthread/thread.c
new file mode 100644
index 0000000..08ef339
--- /dev/null
+++ b/gnulib-tests/glthread/thread.c
@@ -0,0 +1,205 @@
+/* Creating and controlling threads.
+   Copyright (C) 2005-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-win32.h.  */
+
+#include <config.h>
+
+/* Specification.  */
+# define _GLTHREAD_THREAD_INLINE _GL_EXTERN_INLINE
+#include "glthread/thread.h"
+
+#include <stdlib.h>
+#include "glthread/lock.h"
+
+/* ========================================================================= */
+
+#if USE_ISOC_THREADS
+
+struct thrd_with_exitvalue
+{
+  thrd_t volatile tid;
+  void * volatile exitvalue;
+};
+
+/* The Thread-Specific Storage (TSS) key that allows to access each thread's
+   'struct thrd_with_exitvalue *' pointer.  */
+static tss_t thrd_with_exitvalue_key;
+
+/* Initializes thrd_with_exitvalue_key.
+   This function must only be called once.  */
+static void
+do_init_thrd_with_exitvalue_key (void)
+{
+  if (tss_create (&thrd_with_exitvalue_key, NULL) != thrd_success)
+    abort ();
+}
+
+/* Initializes thrd_with_exitvalue_key.  */
+static void
+init_thrd_with_exitvalue_key (void)
+{
+  static once_flag once = ONCE_FLAG_INIT;
+  call_once (&once, do_init_thrd_with_exitvalue_key);
+}
+
+typedef union
+        {
+          struct thrd_with_exitvalue t;
+          struct
+          {
+            thrd_t tid; /* reserve memory for t.tid */
+            void *(*mainfunc) (void *);
+            void *arg;
+          } a;
+        }
+        main_arg_t;
+
+static int
+thrd_main_func (void *pmarg)
+{
+  /* Unpack the object that combines mainfunc and arg.  */
+  main_arg_t *main_arg = (main_arg_t *) pmarg;
+  void *(*mainfunc) (void *) = main_arg->a.mainfunc;
+  void *arg = main_arg->a.arg;
+
+  if (tss_set (thrd_with_exitvalue_key, &main_arg->t) != thrd_success)
+    abort ();
+
+  /* Execute mainfunc, with arg as argument.  */
+  {
+    void *exitvalue = mainfunc (arg);
+    /* Store the exitvalue, for use by glthread_join().  */
+    main_arg->t.exitvalue = exitvalue;
+    return 0;
+  }
+}
+
+int
+glthread_create (gl_thread_t *threadp, void *(*mainfunc) (void *), void *arg)
+{
+  init_thrd_with_exitvalue_key ();
+  {
+    /* Combine mainfunc and arg in a single object.
+       A stack-allocated object does not work, because it would be out of
+       existence when thrd_create returns before thrd_main_func is
+       entered.  So, allocate it in the heap.  */
+    main_arg_t *main_arg = (main_arg_t *) malloc (sizeof (main_arg_t));
+    if (main_arg == NULL)
+      return ENOMEM;
+    main_arg->a.mainfunc = mainfunc;
+    main_arg->a.arg = arg;
+    switch (thrd_create ((thrd_t *) &main_arg->t.tid, thrd_main_func, main_arg))
+      {
+      case thrd_success:
+        break;
+      case thrd_nomem:
+        free (main_arg);
+        return ENOMEM;
+      default:
+        free (main_arg);
+        return EAGAIN;
+      }
+    *threadp = &main_arg->t;
+    return 0;
+  }
+}
+
+gl_thread_t
+gl_thread_self (void)
+{
+  init_thrd_with_exitvalue_key ();
+  {
+    gl_thread_t thread =
+      (struct thrd_with_exitvalue *) tss_get (thrd_with_exitvalue_key);
+    if (thread == NULL)
+      {
+        /* This happens only in threads that have not been created through
+           glthread_create(), such as the main thread.  */
+        for (;;)
+          {
+            thread =
+              (struct thrd_with_exitvalue *)
+              malloc (sizeof (struct thrd_with_exitvalue));
+            if (thread != NULL)
+              break;
+            /* Memory allocation failed.  There is not much we can do.  Have to
+               busy-loop, waiting for the availability of memory.  */
+            {
+              struct timespec ts;
+              ts.tv_sec = 1;
+              ts.tv_nsec = 0;
+              thrd_sleep (&ts, NULL);
+            }
+          }
+        thread->tid = thrd_current ();
+        thread->exitvalue = NULL; /* just to be deterministic */
+        if (tss_set (thrd_with_exitvalue_key, thread) != thrd_success)
+          abort ();
+      }
+    return thread;
+  }
+}
+
+int
+glthread_join (gl_thread_t thread, void **return_value_ptr)
+{
+  /* On Solaris 11.4, thrd_join crashes when the second argument we pass is
+     NULL.  */
+  int dummy;
+
+  if (thread == gl_thread_self ())
+    return EINVAL;
+  if (thrd_join (thread->tid, &dummy) != thrd_success)
+    return EINVAL;
+  if (return_value_ptr != NULL)
+    *return_value_ptr = thread->exitvalue;
+  free (thread);
+  return 0;
+}
+
+_Noreturn void
+gl_thread_exit (void *return_value)
+{
+  gl_thread_t thread = gl_thread_self ();
+  thread->exitvalue = return_value;
+  thrd_exit (0);
+}
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS
+
+#include <pthread.h>
+
+#if defined PTW32_VERSION || defined __MVS__
+
+const gl_thread_t gl_null_thread /* = { .p = NULL } */;
+
+#endif
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_WINDOWS_THREADS
+
+#endif
+
+/* ========================================================================= */
diff --git a/gnulib-tests/glthread/thread.h b/gnulib-tests/glthread/thread.h
new file mode 100644
index 0000000..a980e65
--- /dev/null
+++ b/gnulib-tests/glthread/thread.h
@@ -0,0 +1,356 @@
+/* Creating and controlling threads.
+   Copyright (C) 2005-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-win32.h.  */
+
+/* This file contains primitives for creating and controlling threads.
+
+   Thread data type: gl_thread_t.
+
+   Creating a thread:
+       thread = gl_thread_create (func, arg);
+   Or with control of error handling:
+       err = glthread_create (&thread, func, arg);
+       extern int glthread_create (gl_thread_t *result,
+                                   void *(*func) (void *), void *arg);
+
+   Querying and changing the signal mask of a thread (not supported on all
+   platforms):
+       gl_thread_sigmask (how, newmask, oldmask);
+   Or with control of error handling:
+       err = glthread_sigmask (how, newmask, oldmask);
+       extern int glthread_sigmask (int how, const sigset_t *newmask, sigset_t *oldmask);
+
+   Waiting for termination of another thread:
+       gl_thread_join (thread, &return_value);
+   Or with control of error handling:
+       err = glthread_join (thread, &return_value);
+       extern int glthread_join (gl_thread_t thread, void **return_value_ptr);
+
+   Getting a reference to the current thread:
+       current = gl_thread_self ();
+       extern gl_thread_t gl_thread_self (void);
+
+   Getting a reference to the current thread as a pointer, for debugging:
+       ptr = gl_thread_self_pointer ();
+       extern void * gl_thread_self_pointer (void);
+
+   Terminating the current thread:
+       gl_thread_exit (return_value);
+       extern _Noreturn void gl_thread_exit (void *return_value);
+
+   Requesting custom code to be executed at fork() time (not supported on all
+   platforms):
+       gl_thread_atfork (prepare_func, parent_func, child_func);
+   Or with control of error handling:
+       err = glthread_atfork (prepare_func, parent_func, child_func);
+       extern int glthread_atfork (void (*prepare_func) (void),
+                                   void (*parent_func) (void),
+                                   void (*child_func) (void));
+   Note that even on platforms where this is supported, use of fork() and
+   threads together is problematic, see
+     <https://lists.gnu.org/r/bug-gnulib/2008-08/msg00062.html>
+ */
+
+
+#ifndef _GLTHREAD_THREAD_H
+#define _GLTHREAD_THREAD_H
+
+#include <errno.h>
+#include <stdlib.h>
+
+#if !defined c11_threads_in_use
+# if HAVE_THREADS_H && USE_POSIX_THREADS_WEAK
+#  include <threads.h>
+#  pragma weak thrd_exit
+#  define c11_threads_in_use() (thrd_exit != NULL)
+# else
+#  define c11_threads_in_use() 0
+# endif
+#endif
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef _GLTHREAD_THREAD_INLINE
+# define _GLTHREAD_THREAD_INLINE _GL_INLINE
+#endif
+
+/* ========================================================================= */
+
+#if USE_ISOC_THREADS
+
+/* Use the ISO C threads library.  */
+
+# include <threads.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+/* -------------------------- gl_thread_t datatype -------------------------- */
+
+typedef struct thrd_with_exitvalue *gl_thread_t;
+extern int glthread_create (gl_thread_t *threadp,
+                            void *(*func) (void *), void *arg);
+# define glthread_sigmask(HOW, SET, OSET) \
+    pthread_sigmask (HOW, SET, OSET)
+extern int glthread_join (gl_thread_t thread, void **return_value_ptr);
+extern gl_thread_t gl_thread_self (void);
+# define gl_thread_self_pointer() \
+    (void *) gl_thread_self ()
+extern _Noreturn void gl_thread_exit (void *return_value);
+# define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) 0
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS
+
+/* Use the POSIX threads library.  */
+
+# include <pthread.h>
+
+/* On IRIX, pthread_atfork is declared in <unistd.h>, not in <pthread.h>.  */
+# if defined __sgi
+#  include <unistd.h>
+# endif
+
+# if USE_POSIX_THREADS_WEAK
+/* Compilers other than GCC need to see the declaration of pthread_sigmask
+   before the "#pragma weak pthread_sigmask" below.  */
+#  include <signal.h>
+# endif
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+# if PTHREAD_IN_USE_DETECTION_HARD
+
+/* The pthread_in_use() detection needs to be done at runtime.  */
+#  define pthread_in_use() \
+     glthread_in_use ()
+extern int glthread_in_use (void);
+
+# endif
+
+# if USE_POSIX_THREADS_WEAK
+
+/* Use weak references to the POSIX threads library.  */
+
+/* Weak references avoid dragging in external libraries if the other parts
+   of the program don't use them.  Here we use them, because we don't want
+   every program that uses libintl to depend on libpthread.  This assumes
+   that libpthread would not be loaded after libintl; i.e. if libintl is
+   loaded first, by an executable that does not depend on libpthread, and
+   then a module is dynamically loaded that depends on libpthread, libintl
+   will not be multithread-safe.  */
+
+/* The way to test at runtime whether libpthread is present is to test
+   whether a function pointer's value, such as &pthread_mutex_init, is
+   non-NULL.  However, some versions of GCC have a bug through which, in
+   PIC mode, &foo != NULL always evaluates to true if there is a direct
+   call to foo(...) in the same function.  To avoid this, we test the
+   address of a function in libpthread that we don't use.  */
+
+#  ifndef pthread_sigmask /* Do not declare rpl_pthread_sigmask weak.  */
+#   pragma weak pthread_sigmask
+#  endif
+
+#  pragma weak pthread_join
+#  ifndef pthread_self
+#   pragma weak pthread_self
+#  endif
+#  pragma weak pthread_exit
+#  if HAVE_PTHREAD_ATFORK
+#   pragma weak pthread_atfork
+#  endif
+
+#  if !PTHREAD_IN_USE_DETECTION_HARD
+#   pragma weak pthread_mutexattr_gettype
+#   define pthread_in_use() \
+      (pthread_mutexattr_gettype != NULL || c11_threads_in_use ())
+#  endif
+
+# else
+
+#  if !PTHREAD_IN_USE_DETECTION_HARD
+#   define pthread_in_use() 1
+#  endif
+
+# endif
+
+/* -------------------------- gl_thread_t datatype -------------------------- */
+
+/* This choice of gl_thread_t assumes that
+     pthread_equal (a, b)  is equivalent to  ((a) == (b)).
+   This is the case on all platforms in use in 2008.  */
+typedef pthread_t gl_thread_t;
+# define glthread_create(THREADP, FUNC, ARG) \
+    (pthread_in_use () ? pthread_create (THREADP, NULL, FUNC, ARG) : ENOSYS)
+# define glthread_sigmask(HOW, SET, OSET) \
+    (pthread_in_use () ? pthread_sigmask (HOW, SET, OSET) : 0)
+# define glthread_join(THREAD, RETVALP) \
+    (pthread_in_use () ? pthread_join (THREAD, RETVALP) : 0)
+# ifdef PTW32_VERSION
+   /* In pthreads-win32, pthread_t is a struct with a pointer field 'p' and
+      other fields.  */
+#  define gl_thread_self() \
+     (pthread_in_use () ? pthread_self () : gl_null_thread)
+#  define gl_thread_self_pointer() \
+     (pthread_in_use () ? pthread_self ().p : NULL)
+extern const gl_thread_t gl_null_thread;
+# elif defined __MVS__
+   /* On IBM z/OS, pthread_t is a struct with an 8-byte '__' field.
+      The first three bytes of this field appear to uniquely identify a
+      pthread_t, though not necessarily representing a pointer.  */
+#  define gl_thread_self() \
+     (pthread_in_use () ? pthread_self () : gl_null_thread)
+#  define gl_thread_self_pointer() \
+     (pthread_in_use () ? *((void **) pthread_self ().__) : NULL)
+extern const gl_thread_t gl_null_thread;
+# else
+#  define gl_thread_self() \
+     (pthread_in_use () ? pthread_self () : (pthread_t) NULL)
+#  define gl_thread_self_pointer() \
+     (pthread_in_use () ? (void *) pthread_self () : NULL)
+# endif
+# define gl_thread_exit(RETVAL) \
+    (pthread_in_use () ? pthread_exit (RETVAL) : 0)
+
+# if HAVE_PTHREAD_ATFORK
+#  define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) \
+     (pthread_in_use () ? pthread_atfork (PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) : 0)
+# else
+#  define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) 0
+# endif
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_WINDOWS_THREADS
+
+# define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+# include <windows.h>
+
+# include "windows-thread.h"
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+/* -------------------------- gl_thread_t datatype -------------------------- */
+
+typedef glwthread_thread_t gl_thread_t;
+# define glthread_create(THREADP, FUNC, ARG) \
+    glwthread_thread_create (THREADP, 0, FUNC, ARG)
+# define glthread_sigmask(HOW, SET, OSET) \
+    /* unsupported */ 0
+# define glthread_join(THREAD, RETVALP) \
+    glwthread_thread_join (THREAD, RETVALP)
+# define gl_thread_self() \
+    glwthread_thread_self ()
+# define gl_thread_self_pointer() \
+    gl_thread_self ()
+# define gl_thread_exit(RETVAL) \
+    glwthread_thread_exit (RETVAL)
+# define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) 0
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+#if !(USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS)
+
+/* Provide dummy implementation if threads are not supported.  */
+
+typedef int gl_thread_t;
+# define glthread_create(THREADP, FUNC, ARG) ENOSYS
+# define glthread_sigmask(HOW, SET, OSET) 0
+# define glthread_join(THREAD, RETVALP) 0
+# define gl_thread_self() 0
+# define gl_thread_self_pointer() \
+    ((void *) gl_thread_self ())
+# define gl_thread_exit(RETVAL) 0
+# define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) 0
+
+#endif
+
+/* ========================================================================= */
+
+/* Macros with built-in error handling.  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+_GLTHREAD_THREAD_INLINE gl_thread_t
+gl_thread_create (void *(*func) (void *arg), void *arg)
+{
+  gl_thread_t thread;
+  int ret;
+
+  ret = glthread_create (&thread, func, arg);
+  if (ret != 0)
+    abort ();
+  return thread;
+}
+#define gl_thread_sigmask(HOW, SET, OSET)     \
+   do                                         \
+     {                                        \
+       if (glthread_sigmask (HOW, SET, OSET)) \
+         abort ();                            \
+     }                                        \
+   while (0)
+#define gl_thread_join(THREAD, RETVAL)     \
+   do                                      \
+     {                                     \
+       if (glthread_join (THREAD, RETVAL)) \
+         abort ();                         \
+     }                                     \
+   while (0)
+#define gl_thread_atfork(PREPARE, PARENT, CHILD)     \
+   do                                                \
+     {                                               \
+       if (glthread_atfork (PREPARE, PARENT, CHILD)) \
+         abort ();                                   \
+     }                                               \
+   while (0)
+
+#ifdef __cplusplus
+}
+#endif
+
+_GL_INLINE_HEADER_END
+
+#endif /* _GLTHREAD_THREAD_H */
diff --git a/gnulib-tests/glthread/yield.h b/gnulib-tests/glthread/yield.h
new file mode 100644
index 0000000..dd1f50c
--- /dev/null
+++ b/gnulib-tests/glthread/yield.h
@@ -0,0 +1,100 @@
+/* Yielding the processor to other threads and processes.
+   Copyright (C) 2005-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* This file contains a primitive for yielding the processor to other threads.
+     extern void gl_thread_yield (void);
+ */
+
+#ifndef _GLTHREAD_YIELD_H
+#define _GLTHREAD_YIELD_H
+
+#include <errno.h>
+
+/* ========================================================================= */
+
+#if USE_ISOC_THREADS || USE_ISOC_AND_POSIX_THREADS
+
+/* Use the ISO C threads library.  */
+
+# include <threads.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+# define gl_thread_yield() \
+    thrd_yield ()
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_POSIX_THREADS
+
+/* Use the POSIX threads library.  */
+
+# include <sched.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+# define gl_thread_yield() \
+    sched_yield ()
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_WINDOWS_THREADS
+
+# define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+# include <windows.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+# define gl_thread_yield() \
+    Sleep (0)
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+#if !(USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS)
+
+/* Provide dummy implementation if threads are not supported.  */
+
+# define gl_thread_yield() 0
+
+#endif
+
+/* ========================================================================= */
+
+#endif /* _GLTHREAD_YIELD_H */
diff --git a/gnulib-tests/gnulib.mk b/gnulib-tests/gnulib.mk
new file mode 100644
index 0000000..13551cf
--- /dev/null
+++ b/gnulib-tests/gnulib.mk
@@ -0,0 +1,2899 @@
+## DO NOT EDIT! GENERATED AUTOMATICALLY!
+## Process this file with automake to produce Makefile.in.
+# Copyright (C) 2002-2020 Free Software Foundation, Inc.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this file.  If not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License,
+# this file may be distributed as part of a program that
+# contains a configuration script generated by Autoconf, under
+# the same distribution terms as the rest of that program.
+#
+# Generated by gnulib-tool.
+
+AUTOMAKE_OPTIONS = 1.11 foreign subdir-objects
+
+SUBDIRS = .
+TESTS =
+XFAIL_TESTS =
+TESTS_ENVIRONMENT =
+noinst_PROGRAMS =
+check_PROGRAMS =
+EXTRA_PROGRAMS =
+noinst_HEADERS =
+noinst_LIBRARIES =
+check_LIBRARIES = libtests.a
+EXTRA_DIST =
+BUILT_SOURCES =
+SUFFIXES =
+MOSTLYCLEANFILES = core *.stackdump
+MOSTLYCLEANDIRS =
+CLEANFILES =
+DISTCLEANFILES =
+MAINTAINERCLEANFILES =
+
+AM_CPPFLAGS = \
+  -D@gltests_WITNESS@=1 \
+  -I. -I$(srcdir) \
+  -I.. -I$(srcdir)/.. \
+  -I../lib -I$(srcdir)/../lib
+
+LDADD = libtests.a ../lib/libcoreutils.a libtests.a $(LIBTESTS_LIBDEPS)
+
+libtests_a_SOURCES =
+libtests_a_LIBADD = $(gltests_LIBOBJS)
+libtests_a_DEPENDENCIES = $(gltests_LIBOBJS)
+EXTRA_libtests_a_SOURCES =
+AM_LIBTOOLFLAGS = --preserve-dup-deps
+
+TESTS_ENVIRONMENT += EXEEXT='@EXEEXT@' srcdir='$(srcdir)'
+
+## begin gnulib module accept
+
+
+EXTRA_DIST += accept.c w32sock.h
+
+EXTRA_libtests_a_SOURCES += accept.c
+
+## end   gnulib module accept
+
+## begin gnulib module accept-tests
+
+TESTS += test-accept
+check_PROGRAMS += test-accept
+test_accept_LDADD = $(LDADD) @LIBSOCKET@
+EXTRA_DIST += test-accept.c signature.h macros.h
+
+## end   gnulib module accept-tests
+
+## begin gnulib module acl-tests
+
+TESTS += \
+  test-set-mode-acl.sh test-set-mode-acl-1.sh test-set-mode-acl-2.sh \
+  test-copy-acl.sh test-copy-acl-1.sh test-copy-acl-2.sh
+TESTS_ENVIRONMENT += USE_ACL=$(USE_ACL)
+check_PROGRAMS += test-set-mode-acl test-copy-acl test-sameacls
+test_set_mode_acl_LDADD = $(LDADD) $(LIB_ACL) @LIBINTL@ $(LIB_MBRTOWC)
+test_copy_acl_LDADD = $(LDADD) $(LIB_ACL) @LIBINTL@ $(LIB_MBRTOWC)
+test_sameacls_LDADD = $(LDADD) $(LIB_ACL) @LIBINTL@ $(LIB_MBRTOWC)
+EXTRA_DIST += test-set-mode-acl.sh test-set-mode-acl-1.sh test-set-mode-acl-2.sh test-copy-acl.sh test-copy-acl-1.sh test-copy-acl-2.sh test-set-mode-acl.c test-copy-acl.c test-sameacls.c macros.h
+
+## end   gnulib module acl-tests
+
+## begin gnulib module alignof-tests
+
+TESTS += test-alignof
+check_PROGRAMS += test-alignof
+
+EXTRA_DIST += test-alignof.c
+
+## end   gnulib module alignof-tests
+
+## begin gnulib module alloca-opt-tests
+
+TESTS += test-alloca-opt
+check_PROGRAMS += test-alloca-opt
+
+EXTRA_DIST += test-alloca-opt.c
+
+## end   gnulib module alloca-opt-tests
+
+## begin gnulib module areadlink-tests
+
+TESTS += test-areadlink
+check_PROGRAMS += test-areadlink
+EXTRA_DIST += test-areadlink.h test-areadlink.c macros.h
+
+## end   gnulib module areadlink-tests
+
+## begin gnulib module areadlink-with-size-tests
+
+TESTS += test-areadlink-with-size
+check_PROGRAMS += test-areadlink-with-size
+EXTRA_DIST += test-areadlink.h test-areadlink-with-size.c macros.h
+
+## end   gnulib module areadlink-with-size-tests
+
+## begin gnulib module areadlinkat-tests
+
+TESTS += test-areadlinkat
+check_PROGRAMS += test-areadlinkat
+test_areadlinkat_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-areadlink.h test-areadlinkat.c macros.h
+
+## end   gnulib module areadlinkat-tests
+
+## begin gnulib module argmatch-tests
+
+TESTS += test-argmatch
+check_PROGRAMS += test-argmatch
+test_argmatch_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC)
+
+EXTRA_DIST += test-argmatch.c macros.h
+
+## end   gnulib module argmatch-tests
+
+## begin gnulib module argv-iter-tests
+
+TESTS += test-argv-iter
+check_PROGRAMS += test-argv-iter
+EXTRA_DIST += test-argv-iter.c macros.h
+
+## end   gnulib module argv-iter-tests
+
+## begin gnulib module arpa_inet-tests
+
+TESTS += test-arpa_inet
+check_PROGRAMS += test-arpa_inet
+EXTRA_DIST += test-arpa_inet.c
+
+## end   gnulib module arpa_inet-tests
+
+## begin gnulib module base32-tests
+
+TESTS += test-base32
+check_PROGRAMS += test-base32
+EXTRA_DIST += test-base32.c macros.h
+
+## end   gnulib module base32-tests
+
+## begin gnulib module base64-tests
+
+TESTS += test-base64
+check_PROGRAMS += test-base64
+EXTRA_DIST += test-base64.c macros.h
+
+## end   gnulib module base64-tests
+
+## begin gnulib module binary-io-tests
+
+TESTS += test-binary-io.sh
+check_PROGRAMS += test-binary-io
+
+EXTRA_DIST += test-binary-io.sh test-binary-io.c macros.h
+
+## end   gnulib module binary-io-tests
+
+## begin gnulib module bind
+
+
+EXTRA_DIST += bind.c w32sock.h
+
+EXTRA_libtests_a_SOURCES += bind.c
+
+## end   gnulib module bind
+
+## begin gnulib module bind-tests
+
+TESTS += test-bind
+check_PROGRAMS += test-bind
+test_bind_LDADD = $(LDADD) @LIBSOCKET@ $(INET_PTON_LIB)
+EXTRA_DIST += test-bind.c signature.h macros.h
+
+## end   gnulib module bind-tests
+
+## begin gnulib module bitrotate-tests
+
+TESTS += test-bitrotate
+check_PROGRAMS += test-bitrotate
+EXTRA_DIST += test-bitrotate.c macros.h
+
+## end   gnulib module bitrotate-tests
+
+## begin gnulib module btowc-tests
+
+TESTS += test-btowc1.sh test-btowc2.sh
+TESTS_ENVIRONMENT += LOCALE_FR='@LOCALE_FR@' LOCALE_FR_UTF8='@LOCALE_FR_UTF8@'
+check_PROGRAMS += test-btowc
+test_btowc_LDADD = $(LDADD) $(LIB_SETLOCALE)
+EXTRA_DIST += test-btowc1.sh test-btowc2.sh test-btowc.c signature.h macros.h
+
+## end   gnulib module btowc-tests
+
+## begin gnulib module byteswap-tests
+
+TESTS += test-byteswap
+check_PROGRAMS += test-byteswap
+EXTRA_DIST += test-byteswap.c macros.h
+
+## end   gnulib module byteswap-tests
+
+## begin gnulib module c-ctype-tests
+
+TESTS += test-c-ctype
+check_PROGRAMS += test-c-ctype
+test_c_ctype_LDADD = $(LDADD) $(LIB_SETLOCALE)
+EXTRA_DIST += test-c-ctype.c macros.h
+
+## end   gnulib module c-ctype-tests
+
+## begin gnulib module c-strcase-tests
+
+TESTS += test-c-strcase.sh
+TESTS_ENVIRONMENT += LOCALE_FR='@LOCALE_FR@' LOCALE_TR_UTF8='@LOCALE_TR_UTF8@'
+check_PROGRAMS += test-c-strcasecmp test-c-strncasecmp
+test_c_strcasecmp_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_c_strncasecmp_LDADD = $(LDADD) $(LIB_SETLOCALE)
+EXTRA_DIST += test-c-strcase.sh test-c-strcasecmp.c test-c-strncasecmp.c macros.h
+
+## end   gnulib module c-strcase-tests
+
+## begin gnulib module calloc-gnu-tests
+
+TESTS += test-calloc-gnu
+check_PROGRAMS += test-calloc-gnu
+EXTRA_DIST += test-calloc-gnu.c
+
+## end   gnulib module calloc-gnu-tests
+
+## begin gnulib module canonicalize-tests
+
+TESTS += test-canonicalize
+check_PROGRAMS += test-canonicalize
+test_canonicalize_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-canonicalize.c null-ptr.h macros.h
+
+## end   gnulib module canonicalize-tests
+
+## begin gnulib module chdir-tests
+
+TESTS += test-chdir
+check_PROGRAMS += test-chdir
+EXTRA_DIST += test-chdir.c signature.h macros.h
+
+## end   gnulib module chdir-tests
+
+## begin gnulib module chown-tests
+
+TESTS += test-chown
+check_PROGRAMS += test-chown
+test_chown_LDADD = $(LDADD) $(LIB_NANOSLEEP)
+EXTRA_DIST += nap.h test-chown.h test-chown.c signature.h macros.h
+
+## end   gnulib module chown-tests
+
+## begin gnulib module cloexec-tests
+
+TESTS += test-cloexec
+check_PROGRAMS += test-cloexec
+EXTRA_DIST += test-cloexec.c macros.h
+
+## end   gnulib module cloexec-tests
+
+## begin gnulib module close-tests
+
+TESTS += test-close
+check_PROGRAMS += test-close
+EXTRA_DIST += test-close.c signature.h macros.h
+
+## end   gnulib module close-tests
+
+## begin gnulib module closein-tests
+
+TESTS += test-closein.sh
+check_PROGRAMS += test-closein
+test_closein_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC)
+EXTRA_DIST += test-closein.sh test-closein.c
+
+## end   gnulib module closein-tests
+
+## begin gnulib module connect
+
+
+EXTRA_DIST += connect.c w32sock.h
+
+EXTRA_libtests_a_SOURCES += connect.c
+
+## end   gnulib module connect
+
+## begin gnulib module connect-tests
+
+TESTS += test-connect
+check_PROGRAMS += test-connect
+test_connect_LDADD = $(LDADD) @LIBSOCKET@ $(INET_PTON_LIB)
+EXTRA_DIST += test-connect.c signature.h macros.h
+
+## end   gnulib module connect-tests
+
+## begin gnulib module count-leading-zeros-tests
+
+TESTS += test-count-leading-zeros
+check_PROGRAMS += test-count-leading-zeros
+EXTRA_DIST += test-count-leading-zeros.c macros.h
+
+## end   gnulib module count-leading-zeros-tests
+
+## begin gnulib module crypto/md5-tests
+
+TESTS += test-md5
+check_PROGRAMS += test-md5
+noinst_PROGRAMS += bench-md5
+test_md5_LDADD = $(LDADD) @LIB_CRYPTO@
+bench_md5_LDADD = $(LDADD) @LIB_CRYPTO@
+EXTRA_DIST += test-md5.c test-digest.h bench-md5.c bench-digest.h macros.h
+
+## end   gnulib module crypto/md5-tests
+
+## begin gnulib module crypto/sha1-tests
+
+TESTS += test-sha1
+check_PROGRAMS += test-sha1
+noinst_PROGRAMS += bench-sha1
+test_sha1_LDADD = $(LDADD) @LIB_CRYPTO@
+bench_sha1_LDADD = $(LDADD) @LIB_CRYPTO@
+EXTRA_DIST += test-sha1.c test-digest.h bench-sha1.c bench-digest.h macros.h
+
+## end   gnulib module crypto/sha1-tests
+
+## begin gnulib module crypto/sha256-tests
+
+TESTS += test-sha256
+check_PROGRAMS += test-sha256
+noinst_PROGRAMS += bench-sha224 bench-sha256
+test_sha256_LDADD = $(LDADD) @LIB_CRYPTO@
+bench_sha224_LDADD = $(LDADD) @LIB_CRYPTO@
+bench_sha256_LDADD = $(LDADD) @LIB_CRYPTO@
+EXTRA_DIST += test-sha256.c test-digest.h bench-sha224.c bench-sha256.c bench-digest.h macros.h
+
+## end   gnulib module crypto/sha256-tests
+
+## begin gnulib module crypto/sha512-tests
+
+TESTS += test-sha512
+check_PROGRAMS += test-sha512
+noinst_PROGRAMS += bench-sha384 bench-sha512
+test_sha512_LDADD = $(LDADD) @LIB_CRYPTO@
+bench_sha384_LDADD = $(LDADD) @LIB_CRYPTO@
+bench_sha512_LDADD = $(LDADD) @LIB_CRYPTO@
+EXTRA_DIST += test-sha512.c test-digest.h bench-sha384.c bench-sha512.c bench-digest.h macros.h
+
+## end   gnulib module crypto/sha512-tests
+
+## begin gnulib module ctype-tests
+
+TESTS += test-ctype
+check_PROGRAMS += test-ctype
+EXTRA_DIST += test-ctype.c
+
+## end   gnulib module ctype-tests
+
+## begin gnulib module di-set-tests
+
+TESTS += test-di-set
+check_PROGRAMS += test-di-set
+EXTRA_DIST += test-di-set.c macros.h
+
+## end   gnulib module di-set-tests
+
+## begin gnulib module dirent-safer-tests
+
+TESTS += test-dirent-safer
+check_PROGRAMS += test-dirent-safer
+# Link with libintl when needed. dirent-safer uses fdopendir if it is present,
+# and fdopendir indirectly depends on openat-die -> gettext-h.
+test_dirent_safer_LDADD = $(LDADD) $(LIBINTL)
+EXTRA_DIST += test-dirent-safer.c macros.h
+
+## end   gnulib module dirent-safer-tests
+
+## begin gnulib module dirent-tests
+
+TESTS += test-dirent
+check_PROGRAMS += test-dirent
+EXTRA_DIST += test-dirent.c
+
+## end   gnulib module dirent-tests
+
+## begin gnulib module dirname-tests
+
+TESTS += test-dirname
+check_PROGRAMS += test-dirname
+test_dirname_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-dirname.c
+
+## end   gnulib module dirname-tests
+
+## begin gnulib module dup-tests
+
+TESTS += test-dup
+check_PROGRAMS += test-dup
+EXTRA_DIST += test-dup.c signature.h macros.h
+
+## end   gnulib module dup-tests
+
+## begin gnulib module dup2-tests
+
+TESTS += test-dup2
+check_PROGRAMS += test-dup2
+EXTRA_DIST += test-dup2.c signature.h macros.h
+
+## end   gnulib module dup2-tests
+
+## begin gnulib module environ-tests
+
+TESTS += test-environ
+check_PROGRAMS += test-environ
+
+EXTRA_DIST += test-environ.c
+
+## end   gnulib module environ-tests
+
+## begin gnulib module errno-tests
+
+TESTS += test-errno
+check_PROGRAMS += test-errno
+
+EXTRA_DIST += test-errno.c
+
+## end   gnulib module errno-tests
+
+## begin gnulib module exclude-tests
+
+TESTS += \
+ test-exclude1.sh\
+ test-exclude2.sh\
+ test-exclude3.sh\
+ test-exclude4.sh\
+ test-exclude5.sh\
+ test-exclude6.sh\
+ test-exclude7.sh\
+ test-exclude8.sh
+
+check_PROGRAMS += test-exclude
+test_exclude_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC) $(LIBTHREAD)
+EXTRA_DIST += test-exclude.c test-exclude1.sh test-exclude2.sh test-exclude3.sh test-exclude4.sh test-exclude5.sh test-exclude6.sh test-exclude7.sh test-exclude8.sh
+
+## end   gnulib module exclude-tests
+
+## begin gnulib module faccessat-tests
+
+TESTS += test-faccessat
+check_PROGRAMS += test-faccessat
+test_faccessat_LDADD = $(LDADD) $(LIB_EACCESS) @LIBINTL@
+EXTRA_DIST += test-faccessat.c signature.h macros.h
+
+## end   gnulib module faccessat-tests
+
+## begin gnulib module fadvise-tests
+
+TESTS += test-fadvise
+check_PROGRAMS += test-fadvise
+EXTRA_DIST += test-fadvise.c
+
+## end   gnulib module fadvise-tests
+
+## begin gnulib module fchdir-tests
+
+TESTS += test-fchdir
+check_PROGRAMS += test-fchdir
+test_fchdir_LDADD = $(LDADD) $(LIBINTL)
+EXTRA_DIST += test-fchdir.c signature.h macros.h
+
+## end   gnulib module fchdir-tests
+
+## begin gnulib module fchmodat-tests
+
+TESTS += test-fchmodat
+check_PROGRAMS += test-fchmodat
+test_fchmodat_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-fchmodat.c signature.h macros.h
+
+## end   gnulib module fchmodat-tests
+
+## begin gnulib module fchownat-tests
+
+TESTS += test-fchownat
+check_PROGRAMS += test-fchownat
+test_fchownat_LDADD = $(LDADD) $(LIB_NANOSLEEP) @LIBINTL@
+EXTRA_DIST += nap.h test-chown.h test-lchown.h test-fchownat.c signature.h macros.h
+
+## end   gnulib module fchownat-tests
+
+## begin gnulib module fclose-tests
+
+TESTS += test-fclose
+check_PROGRAMS += test-fclose
+EXTRA_DIST += test-fclose.c
+
+## end   gnulib module fclose-tests
+
+## begin gnulib module fcntl-h-tests
+
+TESTS += test-fcntl-h
+check_PROGRAMS += test-fcntl-h
+EXTRA_DIST += test-fcntl-h.c
+
+## end   gnulib module fcntl-h-tests
+
+## begin gnulib module fcntl-safer-tests
+
+TESTS += test-fcntl-safer
+check_PROGRAMS += test-fcntl-safer
+EXTRA_DIST += test-open.h test-fcntl-safer.c macros.h
+
+## end   gnulib module fcntl-safer-tests
+
+## begin gnulib module fcntl-tests
+
+TESTS += test-fcntl
+check_PROGRAMS += test-fcntl
+EXTRA_DIST += test-fcntl.c signature.h macros.h
+
+## end   gnulib module fcntl-tests
+
+## begin gnulib module fdatasync-tests
+
+TESTS += test-fdatasync
+check_PROGRAMS += test-fdatasync
+test_fdatasync_LDADD = $(LDADD) $(LIB_FDATASYNC)
+EXTRA_DIST += test-fdatasync.c signature.h macros.h
+
+## end   gnulib module fdatasync-tests
+
+## begin gnulib module fdopen-tests
+
+TESTS += test-fdopen
+check_PROGRAMS += test-fdopen
+EXTRA_DIST += test-fdopen.c signature.h macros.h
+
+## end   gnulib module fdopen-tests
+
+## begin gnulib module fdopendir-tests
+
+TESTS += test-fdopendir
+check_PROGRAMS += test-fdopendir
+test_fdopendir_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-fdopendir.c signature.h macros.h
+
+## end   gnulib module fdopendir-tests
+
+## begin gnulib module fdutimensat-tests
+
+TESTS += test-fdutimensat
+check_PROGRAMS += test-fdutimensat
+test_fdutimensat_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) \
+  $(LIB_NANOSLEEP) @LIBINTL@
+EXTRA_DIST += nap.h test-futimens.h test-lutimens.h test-utimens.h test-utimens-common.h test-fdutimensat.c macros.h
+
+## end   gnulib module fdutimensat-tests
+
+## begin gnulib module fflush-tests
+
+TESTS += test-fflush test-fflush2.sh
+check_PROGRAMS += test-fflush test-fflush2
+MOSTLYCLEANFILES += test-fflush.txt
+EXTRA_DIST += test-fflush.c test-fflush2.sh test-fflush2.c signature.h macros.h
+
+## end   gnulib module fflush-tests
+
+## begin gnulib module fgetc-tests
+
+TESTS += test-fgetc
+check_PROGRAMS += test-fgetc
+EXTRA_DIST += test-fgetc.c signature.h macros.h
+
+## end   gnulib module fgetc-tests
+
+## begin gnulib module file-has-acl-tests
+
+TESTS += \
+  test-file-has-acl.sh test-file-has-acl-1.sh test-file-has-acl-2.sh
+TESTS_ENVIRONMENT += USE_ACL=$(USE_ACL)
+check_PROGRAMS += test-file-has-acl
+test_file_has_acl_LDADD = $(LDADD) $(LIB_HAS_ACL)
+EXTRA_DIST += test-file-has-acl.sh test-file-has-acl-1.sh test-file-has-acl-2.sh test-file-has-acl.c macros.h
+
+## end   gnulib module file-has-acl-tests
+
+## begin gnulib module filenamecat-tests
+
+TESTS += test-filenamecat
+check_PROGRAMS += test-filenamecat
+test_filenamecat_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-filenamecat.c
+
+## end   gnulib module filenamecat-tests
+
+## begin gnulib module filevercmp-tests
+
+TESTS += test-filevercmp
+check_PROGRAMS += test-filevercmp
+EXTRA_DIST += test-filevercmp.c macros.h
+
+## end   gnulib module filevercmp-tests
+
+## begin gnulib module float-tests
+
+TESTS += test-float
+check_PROGRAMS += test-float
+EXTRA_DIST += test-float.c macros.h
+
+## end   gnulib module float-tests
+
+## begin gnulib module fnmatch-h-tests
+
+TESTS += test-fnmatch-h
+check_PROGRAMS += test-fnmatch-h
+EXTRA_DIST += test-fnmatch-h.c
+
+## end   gnulib module fnmatch-h-tests
+
+## begin gnulib module fnmatch-tests
+
+TESTS += test-fnmatch
+check_PROGRAMS += test-fnmatch
+test_fnmatch_LDADD = $(LDADD) $(LIB_MBRTOWC)
+EXTRA_DIST += test-fnmatch.c signature.h macros.h
+
+## end   gnulib module fnmatch-tests
+
+## begin gnulib module fopen-safer-tests
+
+TESTS += test-fopen-safer
+check_PROGRAMS += test-fopen-safer
+EXTRA_DIST += test-fopen.h test-fopen-safer.c macros.h
+
+## end   gnulib module fopen-safer-tests
+
+## begin gnulib module fopen-tests
+
+TESTS += test-fopen
+check_PROGRAMS += test-fopen
+
+EXTRA_DIST += test-fopen.h test-fopen.c signature.h macros.h
+
+## end   gnulib module fopen-tests
+
+## begin gnulib module fpending-tests
+
+TESTS += test-fpending.sh
+check_PROGRAMS += test-fpending
+MOSTLYCLEANFILES += test-fpending.t
+EXTRA_DIST += test-fpending.c test-fpending.sh macros.h
+
+## end   gnulib module fpending-tests
+
+## begin gnulib module fpurge-tests
+
+TESTS += test-fpurge
+check_PROGRAMS += test-fpurge
+MOSTLYCLEANFILES += t-fpurge.tmp
+EXTRA_DIST += test-fpurge.c macros.h
+
+## end   gnulib module fpurge-tests
+
+## begin gnulib module fputc-tests
+
+TESTS += test-fputc
+check_PROGRAMS += test-fputc
+EXTRA_DIST += test-fputc.c signature.h macros.h
+
+## end   gnulib module fputc-tests
+
+## begin gnulib module fread-tests
+
+TESTS += test-fread
+check_PROGRAMS += test-fread
+EXTRA_DIST += test-fread.c signature.h macros.h
+
+## end   gnulib module fread-tests
+
+## begin gnulib module freadahead-tests
+
+TESTS += test-freadahead.sh
+check_PROGRAMS += test-freadahead
+EXTRA_DIST += test-freadahead.c test-freadahead.sh macros.h
+
+## end   gnulib module freadahead-tests
+
+## begin gnulib module freading-tests
+
+TESTS += test-freading
+check_PROGRAMS += test-freading
+MOSTLYCLEANFILES += t-freading.tmp
+EXTRA_DIST += test-freading.c macros.h
+
+## end   gnulib module freading-tests
+
+## begin gnulib module freadptr-tests
+
+TESTS += test-freadptr.sh test-freadptr2.sh
+check_PROGRAMS += test-freadptr test-freadptr2
+EXTRA_DIST += test-freadptr.c test-freadptr.sh test-freadptr2.c test-freadptr2.sh macros.h
+
+## end   gnulib module freadptr-tests
+
+## begin gnulib module freadseek-tests
+
+TESTS += test-freadseek.sh
+check_PROGRAMS += test-freadseek
+EXTRA_DIST += test-freadseek.c test-freadseek.sh macros.h
+
+## end   gnulib module freadseek-tests
+
+## begin gnulib module freopen-safer-tests
+
+TESTS += test-freopen-safer
+check_PROGRAMS += test-freopen-safer
+EXTRA_DIST += test-freopen-safer.c macros.h
+
+## end   gnulib module freopen-safer-tests
+
+## begin gnulib module freopen-tests
+
+TESTS += test-freopen
+check_PROGRAMS += test-freopen
+
+EXTRA_DIST += test-freopen.c signature.h macros.h
+
+## end   gnulib module freopen-tests
+
+## begin gnulib module frexp-nolibm-tests
+
+TESTS += test-frexp-nolibm
+check_PROGRAMS += test-frexp-nolibm
+test_frexp_nolibm_SOURCES = test-frexp.c randomd.c
+EXTRA_DIST += test-frexp.c test-frexp.h minus-zero.h infinity.h nan.h signature.h macros.h randomd.c
+
+## end   gnulib module frexp-nolibm-tests
+
+## begin gnulib module frexpl-nolibm-tests
+
+TESTS += test-frexpl-nolibm
+check_PROGRAMS += test-frexpl-nolibm
+test_frexpl_nolibm_SOURCES = test-frexpl.c randoml.c
+EXTRA_DIST += test-frexpl.c test-frexp.h minus-zero.h infinity.h nan.h signature.h macros.h randoml.c
+
+## end   gnulib module frexpl-nolibm-tests
+
+## begin gnulib module fseek-tests
+
+TESTS += test-fseek.sh test-fseek2.sh
+check_PROGRAMS += test-fseek
+EXTRA_DIST += test-fseek.c test-fseek.sh test-fseek2.sh signature.h macros.h
+
+## end   gnulib module fseek-tests
+
+## begin gnulib module fseeko-tests
+
+TESTS += test-fseeko.sh test-fseeko2.sh test-fseeko3.sh test-fseeko4.sh
+check_PROGRAMS += test-fseeko test-fseeko3 test-fseeko4
+EXTRA_DIST += test-fseeko.c test-fseeko.sh test-fseeko2.sh test-fseeko3.c test-fseeko3.sh test-fseeko4.c test-fseeko4.sh signature.h macros.h
+
+## end   gnulib module fseeko-tests
+
+## begin gnulib module fseterr-tests
+
+TESTS += test-fseterr
+check_PROGRAMS += test-fseterr
+
+EXTRA_DIST += test-fseterr.c
+
+## end   gnulib module fseterr-tests
+
+## begin gnulib module fstat-tests
+
+TESTS += test-fstat
+check_PROGRAMS += test-fstat
+EXTRA_DIST += test-fstat.c signature.h macros.h
+
+## end   gnulib module fstat-tests
+
+## begin gnulib module fstatat-tests
+
+TESTS += test-fstatat
+check_PROGRAMS += test-fstatat
+test_fstatat_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-fstatat.c test-lstat.h test-stat.h signature.h macros.h
+
+## end   gnulib module fstatat-tests
+
+## begin gnulib module fsync-tests
+
+TESTS += test-fsync
+check_PROGRAMS += test-fsync
+EXTRA_DIST += test-fsync.c signature.h macros.h
+
+## end   gnulib module fsync-tests
+
+## begin gnulib module ftell-tests
+
+TESTS += test-ftell.sh test-ftell2.sh test-ftell3
+check_PROGRAMS += test-ftell test-ftell3
+MOSTLYCLEANFILES += t-ftell3.tmp
+EXTRA_DIST += test-ftell.c test-ftell.sh test-ftell2.sh test-ftell3.c signature.h macros.h
+
+## end   gnulib module ftell-tests
+
+## begin gnulib module ftello-tests
+
+TESTS += test-ftello.sh test-ftello2.sh test-ftello3 test-ftello4.sh
+check_PROGRAMS += test-ftello test-ftello3 test-ftello4
+MOSTLYCLEANFILES += t-ftello3.tmp
+EXTRA_DIST += test-ftello.c test-ftello.sh test-ftello2.sh test-ftello3.c test-ftello4.c test-ftello4.sh signature.h macros.h
+
+## end   gnulib module ftello-tests
+
+## begin gnulib module ftruncate-tests
+
+TESTS += test-ftruncate.sh
+check_PROGRAMS += test-ftruncate
+EXTRA_DIST += test-ftruncate.c test-ftruncate.sh signature.h macros.h
+
+## end   gnulib module ftruncate-tests
+
+## begin gnulib module futimens-tests
+
+TESTS += test-futimens
+check_PROGRAMS += test-futimens
+test_futimens_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) $(LIB_NANOSLEEP) @LIBINTL@
+EXTRA_DIST += nap.h test-futimens.h test-utimens-common.h test-futimens.c signature.h macros.h
+
+## end   gnulib module futimens-tests
+
+## begin gnulib module fwrite-tests
+
+TESTS += test-fwrite
+check_PROGRAMS += test-fwrite
+EXTRA_DIST += test-fwrite.c signature.h macros.h
+
+## end   gnulib module fwrite-tests
+
+## begin gnulib module getaddrinfo-tests
+
+TESTS += test-getaddrinfo
+check_PROGRAMS += test-getaddrinfo
+test_getaddrinfo_LDADD = $(LDADD) @GETADDRINFO_LIB@ @LIBINTL@
+EXTRA_DIST += signature.h test-getaddrinfo.c
+
+## end   gnulib module getaddrinfo-tests
+
+## begin gnulib module getcwd-lgpl-tests
+
+TESTS += test-getcwd-lgpl
+check_PROGRAMS += test-getcwd-lgpl
+test_getcwd_lgpl_LDADD = $(LDADD) $(LIBINTL)
+EXTRA_DIST += test-getcwd-lgpl.c signature.h macros.h
+
+## end   gnulib module getcwd-lgpl-tests
+
+## begin gnulib module getcwd-tests
+
+TESTS += test-getcwd.sh
+check_PROGRAMS += test-getcwd
+test_getcwd_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-getcwd.c test-getcwd.sh
+
+## end   gnulib module getcwd-tests
+
+## begin gnulib module getdelim-tests
+
+TESTS += test-getdelim
+check_PROGRAMS += test-getdelim
+MOSTLYCLEANFILES += test-getdelim.txt
+EXTRA_DIST += test-getdelim.c signature.h macros.h
+
+## end   gnulib module getdelim-tests
+
+## begin gnulib module getdtablesize-tests
+
+TESTS += test-getdtablesize
+check_PROGRAMS += test-getdtablesize
+EXTRA_DIST += test-getdtablesize.c signature.h macros.h
+
+## end   gnulib module getdtablesize-tests
+
+## begin gnulib module getgroups-tests
+
+TESTS += test-getgroups
+check_PROGRAMS += test-getgroups
+EXTRA_DIST += test-getgroups.c signature.h macros.h
+
+## end   gnulib module getgroups-tests
+
+## begin gnulib module gethostname-tests
+
+TESTS += test-gethostname
+check_PROGRAMS += test-gethostname
+test_gethostname_LDADD = $(LDADD) @GETHOSTNAME_LIB@
+EXTRA_DIST += signature.h test-gethostname.c
+
+## end   gnulib module gethostname-tests
+
+## begin gnulib module getline-tests
+
+TESTS += test-getline
+check_PROGRAMS += test-getline
+MOSTLYCLEANFILES += test-getline.txt
+EXTRA_DIST += test-getline.c signature.h macros.h
+
+## end   gnulib module getline-tests
+
+## begin gnulib module getloadavg-tests
+
+TESTS += test-getloadavg
+check_PROGRAMS += test-getloadavg
+test_getloadavg_LDADD = $(LDADD) @GETLOADAVG_LIBS@
+EXTRA_DIST += test-getloadavg.c signature.h
+
+## end   gnulib module getloadavg-tests
+
+## begin gnulib module getlogin-tests
+
+TESTS += test-getlogin
+check_PROGRAMS += test-getlogin
+test_getlogin_LDADD = $(LDADD) $(LIB_GETLOGIN)
+EXTRA_DIST += test-getlogin.c test-getlogin.h signature.h macros.h
+
+## end   gnulib module getlogin-tests
+
+## begin gnulib module getndelim2-tests
+
+TESTS += test-getndelim2
+check_PROGRAMS += test-getndelim2
+MOSTLYCLEANFILES += test-getndelim2.txt
+EXTRA_DIST += test-getndelim2.c macros.h
+
+## end   gnulib module getndelim2-tests
+
+## begin gnulib module getopt-gnu-tests
+
+TESTS += test-getopt-gnu
+check_PROGRAMS += test-getopt-gnu
+test_getopt_gnu_LDADD = $(LDADD) $(LIBINTL)
+EXTRA_DIST += macros.h signature.h test-getopt-gnu.c test-getopt-main.h test-getopt.h test-getopt_long.h
+
+## end   gnulib module getopt-gnu-tests
+
+## begin gnulib module getopt-posix-tests
+
+TESTS += test-getopt-posix
+check_PROGRAMS += test-getopt-posix
+test_getopt_posix_LDADD = $(LDADD) $(LIBINTL)
+EXTRA_DIST += macros.h signature.h test-getopt-posix.c test-getopt-main.h test-getopt.h
+
+## end   gnulib module getopt-posix-tests
+
+## begin gnulib module getprogname-tests
+
+DEFS += -DEXEEXT=\"@EXEEXT@\"
+TESTS += test-getprogname
+check_PROGRAMS += test-getprogname
+test_getprogname_LDADD = $(LDADD)
+EXTRA_DIST += test-getprogname.c
+
+## end   gnulib module getprogname-tests
+
+## begin gnulib module getrusage
+
+
+EXTRA_DIST += getrusage.c
+
+EXTRA_libtests_a_SOURCES += getrusage.c
+
+## end   gnulib module getrusage
+
+## begin gnulib module getrusage-tests
+
+TESTS += test-getrusage
+check_PROGRAMS += test-getrusage
+EXTRA_DIST += test-getrusage.c signature.h macros.h
+
+## end   gnulib module getrusage-tests
+
+## begin gnulib module gettimeofday-tests
+
+TESTS += test-gettimeofday
+check_PROGRAMS += test-gettimeofday
+
+EXTRA_DIST += signature.h test-gettimeofday.c
+
+## end   gnulib module gettimeofday-tests
+
+## begin gnulib module gperf
+
+GPERF = gperf
+V_GPERF = $(V_GPERF_@AM_V@)
+V_GPERF_ = $(V_GPERF_@AM_DEFAULT_V@)
+V_GPERF_0 = @echo "  GPERF   " $@;
+
+## end   gnulib module gperf
+
+## begin gnulib module hard-locale-tests
+
+TESTS += test-hard-locale
+check_PROGRAMS += test-hard-locale
+test_hard_locale_LDADD = $(LDADD) $(LIB_SETLOCALE) @LIB_HARD_LOCALE@
+# We cannot call this program 'locale', because the C++ compiler on Mac OS X
+# would then barf upon '#include <locale>'. So, call it 'current-locale'.
+noinst_PROGRAMS += current-locale
+current_locale_SOURCES = locale.c
+EXTRA_DIST += test-hard-locale.c locale.c
+
+## end   gnulib module hard-locale-tests
+
+## begin gnulib module hash-tests
+
+TESTS += test-hash
+check_PROGRAMS += test-hash
+EXTRA_DIST += test-hash.c macros.h
+
+## end   gnulib module hash-tests
+
+## begin gnulib module i-ring-tests
+
+TESTS += test-i-ring
+check_PROGRAMS += test-i-ring
+EXTRA_DIST += test-i-ring.c macros.h
+
+## end   gnulib module i-ring-tests
+
+## begin gnulib module iconv-h-tests
+
+TESTS += test-iconv-h
+check_PROGRAMS += test-iconv-h
+EXTRA_DIST += test-iconv-h.c
+
+## end   gnulib module iconv-h-tests
+
+## begin gnulib module iconv-tests
+
+TESTS += test-iconv
+check_PROGRAMS += test-iconv
+test_iconv_LDADD = $(LDADD) @LIBICONV@
+
+EXTRA_DIST += test-iconv.c signature.h macros.h
+
+## end   gnulib module iconv-tests
+
+## begin gnulib module ignore-value-tests
+
+TESTS += test-ignore-value
+check_PROGRAMS += test-ignore-value
+EXTRA_DIST += test-ignore-value.c
+
+## end   gnulib module ignore-value-tests
+
+## begin gnulib module inet_ntop-tests
+
+TESTS += test-inet_ntop
+check_PROGRAMS += test-inet_ntop
+test_inet_ntop_LDADD = $(LDADD) @INET_NTOP_LIB@
+EXTRA_DIST += test-inet_ntop.c signature.h macros.h
+
+## end   gnulib module inet_ntop-tests
+
+## begin gnulib module inet_pton
+
+
+EXTRA_DIST += inet_pton.c
+
+EXTRA_libtests_a_SOURCES += inet_pton.c
+
+## end   gnulib module inet_pton
+
+## begin gnulib module inet_pton-tests
+
+TESTS += test-inet_pton
+check_PROGRAMS += test-inet_pton
+test_inet_pton_LDADD = $(LDADD) @INET_PTON_LIB@
+EXTRA_DIST += test-inet_pton.c signature.h macros.h
+
+## end   gnulib module inet_pton-tests
+
+## begin gnulib module ino-map-tests
+
+TESTS += test-ino-map
+check_PROGRAMS += test-ino-map
+EXTRA_DIST += test-ino-map.c macros.h
+
+## end   gnulib module ino-map-tests
+
+## begin gnulib module intprops-tests
+
+TESTS += test-intprops
+check_PROGRAMS += test-intprops
+EXTRA_DIST += test-intprops.c macros.h
+
+## end   gnulib module intprops-tests
+
+## begin gnulib module inttostr-tests
+
+TESTS += test-inttostr
+check_PROGRAMS += test-inttostr
+EXTRA_DIST += macros.h test-inttostr.c
+
+## end   gnulib module inttostr-tests
+
+## begin gnulib module inttypes-tests
+
+TESTS += test-inttypes
+check_PROGRAMS += test-inttypes
+EXTRA_DIST += test-inttypes.c
+
+## end   gnulib module inttypes-tests
+
+## begin gnulib module ioctl
+
+
+EXTRA_DIST += ioctl.c w32sock.h
+
+EXTRA_libtests_a_SOURCES += ioctl.c
+
+## end   gnulib module ioctl
+
+## begin gnulib module ioctl-tests
+
+TESTS += test-ioctl
+check_PROGRAMS += test-ioctl
+EXTRA_DIST += test-ioctl.c signature.h macros.h
+
+## end   gnulib module ioctl-tests
+
+## begin gnulib module isatty-tests
+
+TESTS += test-isatty
+check_PROGRAMS += test-isatty
+EXTRA_DIST += test-isatty.c signature.h macros.h
+
+## end   gnulib module isatty-tests
+
+## begin gnulib module isblank-tests
+
+TESTS += test-isblank
+check_PROGRAMS += test-isblank
+EXTRA_DIST += test-isblank.c signature.h macros.h
+
+## end   gnulib module isblank-tests
+
+## begin gnulib module isnand-nolibm-tests
+
+TESTS += test-isnand-nolibm
+check_PROGRAMS += test-isnand-nolibm
+
+EXTRA_DIST += test-isnand-nolibm.c test-isnand.h minus-zero.h infinity.h nan.h macros.h
+
+## end   gnulib module isnand-nolibm-tests
+
+## begin gnulib module isnanf-nolibm-tests
+
+TESTS += test-isnanf-nolibm
+check_PROGRAMS += test-isnanf-nolibm
+
+EXTRA_DIST += test-isnanf-nolibm.c test-isnanf.h minus-zero.h infinity.h nan.h macros.h
+
+## end   gnulib module isnanf-nolibm-tests
+
+## begin gnulib module isnanl-nolibm-tests
+
+TESTS += test-isnanl-nolibm
+check_PROGRAMS += test-isnanl-nolibm
+
+EXTRA_DIST += test-isnanl-nolibm.c test-isnanl.h minus-zero.h infinity.h nan.h macros.h
+
+## end   gnulib module isnanl-nolibm-tests
+
+## begin gnulib module iswblank-tests
+
+TESTS += test-iswblank
+check_PROGRAMS += test-iswblank
+EXTRA_DIST += test-iswblank.c macros.h
+
+## end   gnulib module iswblank-tests
+
+## begin gnulib module iswdigit-tests
+
+TESTS += test-iswdigit.sh
+TESTS_ENVIRONMENT += \
+  LOCALE_FR='@LOCALE_FR@' \
+  LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+  LOCALE_JA='@LOCALE_JA@' \
+  LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+check_PROGRAMS += test-iswdigit
+test_iswdigit_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+EXTRA_DIST += test-iswdigit.sh test-iswdigit.c signature.h macros.h
+
+## end   gnulib module iswdigit-tests
+
+## begin gnulib module iswxdigit-tests
+
+TESTS += test-iswxdigit.sh
+TESTS_ENVIRONMENT += \
+  LOCALE_FR='@LOCALE_FR@' \
+  LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+  LOCALE_JA='@LOCALE_JA@' \
+  LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+check_PROGRAMS += test-iswxdigit
+test_iswxdigit_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+EXTRA_DIST += test-iswxdigit.sh test-iswxdigit.c signature.h macros.h
+
+## end   gnulib module iswxdigit-tests
+
+## begin gnulib module langinfo-tests
+
+TESTS += test-langinfo
+check_PROGRAMS += test-langinfo
+EXTRA_DIST += test-langinfo.c
+
+## end   gnulib module langinfo-tests
+
+## begin gnulib module lchmod-tests
+
+TESTS += test-lchmod
+check_PROGRAMS += test-lchmod
+test_lchmod_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-lchmod.c signature.h macros.h
+
+## end   gnulib module lchmod-tests
+
+## begin gnulib module lchown-tests
+
+TESTS += test-lchown
+check_PROGRAMS += test-lchown
+test_lchown_LDADD = $(LDADD) $(LIB_NANOSLEEP)
+EXTRA_DIST += nap.h test-lchown.h test-lchown.c signature.h macros.h
+
+## end   gnulib module lchown-tests
+
+## begin gnulib module limits-h-tests
+
+TESTS += test-limits-h
+check_PROGRAMS += test-limits-h
+EXTRA_DIST += test-limits-h.c
+
+## end   gnulib module limits-h-tests
+
+## begin gnulib module link-tests
+
+TESTS += test-link
+check_PROGRAMS += test-link
+test_link_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-link.h test-link.c signature.h macros.h
+
+## end   gnulib module link-tests
+
+## begin gnulib module linkat-tests
+
+TESTS += test-linkat
+check_PROGRAMS += test-linkat
+test_linkat_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-link.h test-linkat.c signature.h macros.h
+
+## end   gnulib module linkat-tests
+
+## begin gnulib module listen
+
+
+EXTRA_DIST += listen.c w32sock.h
+
+EXTRA_libtests_a_SOURCES += listen.c
+
+## end   gnulib module listen
+
+## begin gnulib module listen-tests
+
+TESTS += test-listen
+check_PROGRAMS += test-listen
+test_listen_LDADD = $(LDADD) @LIBSOCKET@
+EXTRA_DIST += test-listen.c signature.h macros.h
+
+## end   gnulib module listen-tests
+
+## begin gnulib module localcharset-tests
+
+noinst_PROGRAMS += test-localcharset
+test_localcharset_LDADD = $(LDADD) $(LIB_SETLOCALE)
+EXTRA_DIST += test-localcharset.c
+
+## end   gnulib module localcharset-tests
+
+## begin gnulib module locale-tests
+
+TESTS += test-locale
+check_PROGRAMS += test-locale
+EXTRA_DIST += test-locale.c
+
+## end   gnulib module locale-tests
+
+## begin gnulib module localeconv-tests
+
+TESTS += test-localeconv
+check_PROGRAMS += test-localeconv
+EXTRA_DIST += test-localeconv.c signature.h macros.h
+
+## end   gnulib module localeconv-tests
+
+## begin gnulib module localename
+
+libtests_a_SOURCES += localename.c localename-table.c
+
+EXTRA_DIST += localename-table.h localename.h
+
+## end   gnulib module localename
+
+## begin gnulib module localename-tests
+
+TESTS += test-localename
+check_PROGRAMS += test-localename
+test_localename_LDADD = $(LDADD) $(LIB_SETLOCALE) @INTL_MACOSX_LIBS@ $(LIBTHREAD)
+
+EXTRA_DIST += test-localename.c macros.h
+
+## end   gnulib module localename-tests
+
+## begin gnulib module lock-tests
+
+TESTS += test-rwlock1 test-lock test-once1 test-once2
+check_PROGRAMS += test-rwlock1 test-lock test-once1 test-once2
+test_rwlock1_LDADD = $(LDADD) @LIBMULTITHREAD@ @YIELD_LIB@
+test_lock_LDADD = $(LDADD) @LIBMULTITHREAD@ @YIELD_LIB@ @LIB_SEMAPHORE@
+test_once1_SOURCES = test-once.c
+test_once1_LDADD = $(LDADD) @LIBTHREAD@
+test_once2_SOURCES = test-once.c
+test_once2_LDADD = $(LDADD) @LIBMULTITHREAD@
+EXTRA_DIST += test-rwlock1.c test-lock.c test-once.c
+
+## end   gnulib module lock-tests
+
+## begin gnulib module lseek-tests
+
+TESTS += test-lseek.sh
+check_PROGRAMS += test-lseek
+EXTRA_DIST += test-lseek.c test-lseek.sh signature.h macros.h
+
+## end   gnulib module lseek-tests
+
+## begin gnulib module lstat-tests
+
+TESTS += test-lstat
+check_PROGRAMS += test-lstat
+EXTRA_DIST += test-lstat.h test-lstat.c signature.h macros.h
+
+## end   gnulib module lstat-tests
+
+## begin gnulib module malloc-gnu-tests
+
+TESTS += test-malloc-gnu
+check_PROGRAMS += test-malloc-gnu
+EXTRA_DIST += test-malloc-gnu.c
+
+## end   gnulib module malloc-gnu-tests
+
+## begin gnulib module malloca-tests
+
+TESTS += test-malloca
+check_PROGRAMS += test-malloca
+
+EXTRA_DIST += test-malloca.c
+
+## end   gnulib module malloca-tests
+
+## begin gnulib module math-tests
+
+TESTS += test-math
+check_PROGRAMS += test-math
+EXTRA_DIST += test-math.c macros.h
+
+## end   gnulib module math-tests
+
+## begin gnulib module mbrtowc-tests
+
+TESTS += \
+  test-mbrtowc1.sh test-mbrtowc2.sh test-mbrtowc3.sh test-mbrtowc4.sh \
+  test-mbrtowc5.sh \
+  test-mbrtowc-w32-1.sh test-mbrtowc-w32-2.sh test-mbrtowc-w32-3.sh \
+  test-mbrtowc-w32-4.sh test-mbrtowc-w32-5.sh test-mbrtowc-w32-6.sh \
+  test-mbrtowc-w32-7.sh
+TESTS_ENVIRONMENT += \
+  LOCALE_FR='@LOCALE_FR@' \
+  LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+  LOCALE_JA='@LOCALE_JA@' \
+  LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+check_PROGRAMS += test-mbrtowc test-mbrtowc-w32
+test_mbrtowc_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+EXTRA_DIST += test-mbrtowc1.sh test-mbrtowc2.sh test-mbrtowc3.sh test-mbrtowc4.sh test-mbrtowc5.sh test-mbrtowc.c test-mbrtowc-w32-1.sh test-mbrtowc-w32-2.sh test-mbrtowc-w32-3.sh test-mbrtowc-w32-4.sh test-mbrtowc-w32-5.sh test-mbrtowc-w32-6.sh test-mbrtowc-w32-7.sh test-mbrtowc-w32.c signature.h macros.h
+
+## end   gnulib module mbrtowc-tests
+
+## begin gnulib module mbsalign-tests
+
+TESTS += test-mbsalign
+check_PROGRAMS += test-mbsalign
+EXTRA_DIST += test-mbsalign.c macros.h
+
+## end   gnulib module mbsalign-tests
+
+## begin gnulib module mbscasecmp-tests
+
+TESTS += test-mbscasecmp.sh
+TESTS_ENVIRONMENT += LOCALE_TR_UTF8='@LOCALE_TR_UTF8@'
+check_PROGRAMS += test-mbscasecmp
+test_mbscasecmp_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+EXTRA_DIST += test-mbscasecmp.sh test-mbscasecmp.c macros.h
+
+## end   gnulib module mbscasecmp-tests
+
+## begin gnulib module mbschr-tests
+
+TESTS += test-mbschr.sh
+TESTS_ENVIRONMENT += LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+check_PROGRAMS += test-mbschr
+test_mbschr_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+EXTRA_DIST += test-mbschr.sh test-mbschr.c macros.h
+
+## end   gnulib module mbschr-tests
+
+## begin gnulib module mbsinit-tests
+
+TESTS += test-mbsinit.sh
+TESTS_ENVIRONMENT += LOCALE_FR_UTF8='@LOCALE_FR_UTF8@'
+check_PROGRAMS += test-mbsinit
+test_mbsinit_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+EXTRA_DIST += test-mbsinit.sh test-mbsinit.c signature.h macros.h
+
+## end   gnulib module mbsinit-tests
+
+## begin gnulib module mbsrtowcs-tests
+
+TESTS += test-mbsrtowcs1.sh test-mbsrtowcs2.sh test-mbsrtowcs3.sh test-mbsrtowcs4.sh
+TESTS_ENVIRONMENT += \
+  LOCALE_FR='@LOCALE_FR@' \
+  LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+  LOCALE_JA='@LOCALE_JA@' \
+  LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+check_PROGRAMS += test-mbsrtowcs
+test_mbsrtowcs_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+EXTRA_DIST += test-mbsrtowcs1.sh test-mbsrtowcs2.sh test-mbsrtowcs3.sh test-mbsrtowcs4.sh test-mbsrtowcs.c signature.h macros.h
+
+## end   gnulib module mbsrtowcs-tests
+
+## begin gnulib module mbsstr-tests
+
+TESTS += test-mbsstr1 test-mbsstr2.sh test-mbsstr3.sh
+TESTS_ENVIRONMENT += LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+check_PROGRAMS += test-mbsstr1 test-mbsstr2 test-mbsstr3
+test_mbsstr1_LDADD = $(LDADD) $(LIB_MBRTOWC)
+test_mbsstr2_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_mbsstr3_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+EXTRA_DIST += test-mbsstr1.c test-mbsstr2.sh test-mbsstr2.c test-mbsstr3.sh test-mbsstr3.c macros.h
+
+## end   gnulib module mbsstr-tests
+
+## begin gnulib module memcasecmp-tests
+
+TESTS += test-memcasecmp
+check_PROGRAMS += test-memcasecmp
+EXTRA_DIST += test-memcasecmp.c zerosize-ptr.h macros.h
+
+## end   gnulib module memcasecmp-tests
+
+## begin gnulib module memchr-tests
+
+TESTS += test-memchr
+check_PROGRAMS += test-memchr
+EXTRA_DIST += test-memchr.c zerosize-ptr.h signature.h macros.h
+
+## end   gnulib module memchr-tests
+
+## begin gnulib module memchr2-tests
+
+TESTS += test-memchr2
+check_PROGRAMS += test-memchr2
+EXTRA_DIST += test-memchr2.c zerosize-ptr.h macros.h
+
+## end   gnulib module memchr2-tests
+
+## begin gnulib module memcoll-tests
+
+TESTS += test-memcoll
+check_PROGRAMS += test-memcoll
+EXTRA_DIST += test-memcoll.c macros.h
+
+## end   gnulib module memcoll-tests
+
+## begin gnulib module memrchr-tests
+
+TESTS += test-memrchr
+check_PROGRAMS += test-memrchr
+EXTRA_DIST += test-memrchr.c zerosize-ptr.h signature.h macros.h
+
+## end   gnulib module memrchr-tests
+
+## begin gnulib module mkdir-tests
+
+TESTS += test-mkdir
+check_PROGRAMS += test-mkdir
+EXTRA_DIST += test-mkdir.h test-mkdir.c signature.h macros.h
+
+## end   gnulib module mkdir-tests
+
+## begin gnulib module mkfifo-tests
+
+TESTS += test-mkfifo
+check_PROGRAMS += test-mkfifo
+EXTRA_DIST += test-mkfifo.h test-mkfifo.c signature.h macros.h
+
+## end   gnulib module mkfifo-tests
+
+## begin gnulib module mknod-tests
+
+TESTS += test-mknod
+check_PROGRAMS += test-mknod
+EXTRA_DIST += test-mkfifo.h test-mknod.c signature.h macros.h
+
+## end   gnulib module mknod-tests
+
+## begin gnulib module nanosleep-tests
+
+TESTS += test-nanosleep
+check_PROGRAMS += test-nanosleep
+test_nanosleep_LDADD = $(LDADD) $(LIB_NANOSLEEP)
+EXTRA_DIST += test-nanosleep.c signature.h macros.h
+
+## end   gnulib module nanosleep-tests
+
+## begin gnulib module netdb-tests
+
+TESTS += test-netdb
+check_PROGRAMS += test-netdb
+EXTRA_DIST += test-netdb.c
+
+## end   gnulib module netdb-tests
+
+## begin gnulib module netinet_in-tests
+
+TESTS += test-netinet_in
+check_PROGRAMS += test-netinet_in
+EXTRA_DIST += test-netinet_in.c
+
+## end   gnulib module netinet_in-tests
+
+## begin gnulib module nl_langinfo-tests
+
+TESTS += test-nl_langinfo.sh test-nl_langinfo-mt
+TESTS_ENVIRONMENT += LOCALE_FR='@LOCALE_FR@' LOCALE_FR_UTF8='@LOCALE_FR_UTF8@'
+check_PROGRAMS += test-nl_langinfo test-nl_langinfo-mt
+test_nl_langinfo_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_nl_langinfo_mt_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIBMULTITHREAD) $(LIB_NANOSLEEP)
+EXTRA_DIST += test-nl_langinfo.sh test-nl_langinfo.c test-nl_langinfo-mt.c signature.h macros.h
+
+## end   gnulib module nl_langinfo-tests
+
+## begin gnulib module nstrftime-tests
+
+TESTS += test-nstrftime
+check_PROGRAMS += test-nstrftime
+EXTRA_DIST += test-nstrftime.c macros.h
+
+## end   gnulib module nstrftime-tests
+
+## begin gnulib module open-tests
+
+TESTS += test-open
+check_PROGRAMS += test-open
+EXTRA_DIST += test-open.h test-open.c signature.h macros.h
+
+## end   gnulib module open-tests
+
+## begin gnulib module openat-safer-tests
+
+TESTS += test-openat-safer
+check_PROGRAMS += test-openat-safer
+test_openat_safer_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-openat-safer.c macros.h
+
+## end   gnulib module openat-safer-tests
+
+## begin gnulib module openat-tests
+
+TESTS += test-openat
+check_PROGRAMS += test-openat
+test_openat_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-openat.c test-open.h signature.h macros.h
+
+## end   gnulib module openat-tests
+
+## begin gnulib module parse-datetime-tests
+
+TESTS += test-parse-datetime
+check_PROGRAMS += test-parse-datetime
+test_parse_datetime_LDADD = $(LDADD) @LIBINTL@ $(LIB_CLOCK_GETTIME)
+EXTRA_DIST += test-parse-datetime.c macros.h
+
+## end   gnulib module parse-datetime-tests
+
+## begin gnulib module pathmax-tests
+
+TESTS += test-pathmax
+check_PROGRAMS += test-pathmax
+EXTRA_DIST += test-pathmax.c
+
+## end   gnulib module pathmax-tests
+
+## begin gnulib module perror
+
+
+EXTRA_DIST += perror.c
+
+EXTRA_libtests_a_SOURCES += perror.c
+
+## end   gnulib module perror
+
+## begin gnulib module perror-tests
+
+TESTS += test-perror.sh test-perror2
+check_PROGRAMS += test-perror test-perror2
+EXTRA_DIST += macros.h signature.h test-perror.c test-perror2.c test-perror.sh
+
+## end   gnulib module perror-tests
+
+## begin gnulib module pipe-posix-tests
+
+TESTS += test-pipe
+check_PROGRAMS += test-pipe
+EXTRA_DIST += test-pipe.c signature.h macros.h
+
+## end   gnulib module pipe-posix-tests
+
+## begin gnulib module pipe2-tests
+
+TESTS += test-pipe2
+check_PROGRAMS += test-pipe2
+test_pipe2_LDADD = $(LDADD) $(LIBSOCKET)
+EXTRA_DIST += test-pipe2.c signature.h macros.h
+
+## end   gnulib module pipe2-tests
+
+## begin gnulib module posixtm-tests
+
+TESTS += test-posixtm
+check_PROGRAMS += test-posixtm
+EXTRA_DIST += test-posixtm.c macros.h
+
+## end   gnulib module posixtm-tests
+
+## begin gnulib module printf-frexp-tests
+
+TESTS += test-printf-frexp
+check_PROGRAMS += test-printf-frexp
+EXTRA_DIST += test-printf-frexp.c macros.h
+
+## end   gnulib module printf-frexp-tests
+
+## begin gnulib module printf-frexpl-tests
+
+TESTS += test-printf-frexpl
+check_PROGRAMS += test-printf-frexpl
+EXTRA_DIST += test-printf-frexpl.c macros.h
+
+## end   gnulib module printf-frexpl-tests
+
+## begin gnulib module priv-set-tests
+
+TESTS += test-priv-set
+check_PROGRAMS += test-priv-set
+EXTRA_DIST += test-priv-set.c macros.h
+
+## end   gnulib module priv-set-tests
+
+## begin gnulib module pthread-cond-tests
+
+TESTS += test-pthread-cond
+check_PROGRAMS += test-pthread-cond
+test_pthread_cond_LDADD = $(LDADD) @LIBPMULTITHREAD@ @LIB_SCHED_YIELD@
+EXTRA_DIST += test-pthread-cond.c macros.h
+
+## end   gnulib module pthread-cond-tests
+
+## begin gnulib module pthread-h-tests
+
+TESTS += test-pthread
+check_PROGRAMS += test-pthread
+EXTRA_DIST += test-pthread.c
+
+## end   gnulib module pthread-h-tests
+
+## begin gnulib module pthread-mutex-tests
+
+TESTS += test-pthread-mutex
+check_PROGRAMS += test-pthread-mutex
+test_pthread_mutex_LDADD = $(LDADD) @LIBPMULTITHREAD@ @LIB_SCHED_YIELD@ @LIB_SEMAPHORE@
+EXTRA_DIST += test-pthread-mutex.c macros.h
+
+## end   gnulib module pthread-mutex-tests
+
+## begin gnulib module pthread-thread-tests
+
+TESTS += test-pthread-thread
+check_PROGRAMS += test-pthread-thread
+test_pthread_thread_LDADD = $(LDADD) @LIBPMULTITHREAD@
+EXTRA_DIST += test-pthread-thread.c macros.h
+
+## end   gnulib module pthread-thread-tests
+
+## begin gnulib module pthread_sigmask-tests
+
+TESTS += test-pthread_sigmask1 test-pthread_sigmask2
+check_PROGRAMS += test-pthread_sigmask1 test-pthread_sigmask2
+test_pthread_sigmask1_LDADD = $(LDADD) @LIB_PTHREAD_SIGMASK@
+test_pthread_sigmask2_LDADD = $(LDADD) @LIB_PTHREAD_SIGMASK@ @LIBMULTITHREAD@
+EXTRA_DIST += test-pthread_sigmask1.c test-pthread_sigmask2.c signature.h macros.h
+
+## end   gnulib module pthread_sigmask-tests
+
+## begin gnulib module quotearg-simple-tests
+
+TESTS += test-quotearg-simple
+check_PROGRAMS += test-quotearg-simple
+test_quotearg_simple_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC)
+EXTRA_DIST += test-quotearg-simple.c test-quotearg.h macros.h zerosize-ptr.h
+
+## end   gnulib module quotearg-simple-tests
+
+## begin gnulib module raise-tests
+
+TESTS += test-raise
+check_PROGRAMS += test-raise
+EXTRA_DIST += test-raise.c signature.h macros.h
+
+## end   gnulib module raise-tests
+
+## begin gnulib module randread-tests
+
+TESTS += test-rand-isaac
+check_PROGRAMS += test-rand-isaac
+EXTRA_DIST += test-rand-isaac.c macros.h
+
+## end   gnulib module randread-tests
+
+## begin gnulib module read-file-tests
+
+TESTS += test-read-file
+check_PROGRAMS += test-read-file
+EXTRA_DIST += test-read-file.c
+
+## end   gnulib module read-file-tests
+
+## begin gnulib module read-tests
+
+TESTS += test-read
+check_PROGRAMS += test-read
+EXTRA_DIST += test-read.c signature.h macros.h
+
+## end   gnulib module read-tests
+
+## begin gnulib module readlink-tests
+
+TESTS += test-readlink
+check_PROGRAMS += test-readlink
+EXTRA_DIST += test-readlink.h test-readlink.c signature.h macros.h
+
+## end   gnulib module readlink-tests
+
+## begin gnulib module readlinkat-tests
+
+TESTS += test-readlinkat
+check_PROGRAMS += test-readlinkat
+test_readlinkat_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-readlink.h test-readlinkat.c signature.h macros.h
+
+## end   gnulib module readlinkat-tests
+
+## begin gnulib module readtokens-tests
+
+TESTS += test-readtokens.sh
+check_PROGRAMS += test-readtokens
+test_readtokens_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC)
+EXTRA_DIST += macros.h test-readtokens.c test-readtokens.sh
+
+## end   gnulib module readtokens-tests
+
+## begin gnulib module realloc-gnu-tests
+
+TESTS += test-realloc-gnu
+check_PROGRAMS += test-realloc-gnu
+EXTRA_DIST += test-realloc-gnu.c
+
+## end   gnulib module realloc-gnu-tests
+
+## begin gnulib module regex-tests
+
+TESTS += test-regex
+check_PROGRAMS += test-regex
+test_regex_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC) @LIBINTL@ $(LIBTHREAD)
+EXTRA_DIST += test-regex.c macros.h
+
+## end   gnulib module regex-tests
+
+## begin gnulib module remove-tests
+
+TESTS += test-remove
+check_PROGRAMS += test-remove
+EXTRA_DIST += test-remove.c signature.h macros.h
+
+## end   gnulib module remove-tests
+
+## begin gnulib module rename-tests
+
+TESTS += test-rename
+check_PROGRAMS += test-rename
+test_rename_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-rename.h test-rename.c signature.h macros.h
+
+## end   gnulib module rename-tests
+
+## begin gnulib module renameat-tests
+
+TESTS += test-renameat
+check_PROGRAMS += test-renameat
+test_renameat_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-rename.h test-renameat.c signature.h macros.h
+
+## end   gnulib module renameat-tests
+
+## begin gnulib module renameatu-tests
+
+TESTS += test-renameatu
+check_PROGRAMS += test-renameatu
+test_renameatu_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-rename.h test-renameatu.c signature.h macros.h
+
+## end   gnulib module renameatu-tests
+
+## begin gnulib module rmdir-tests
+
+TESTS += test-rmdir
+check_PROGRAMS += test-rmdir
+EXTRA_DIST += test-rmdir.h test-rmdir.c signature.h macros.h
+
+## end   gnulib module rmdir-tests
+
+## begin gnulib module sched-tests
+
+TESTS += test-sched
+check_PROGRAMS += test-sched
+EXTRA_DIST += test-sched.c
+
+## end   gnulib module sched-tests
+
+## begin gnulib module sched_yield
+
+
+EXTRA_DIST += sched_yield.c
+
+EXTRA_libtests_a_SOURCES += sched_yield.c
+
+## end   gnulib module sched_yield
+
+## begin gnulib module secure_getenv
+
+
+EXTRA_DIST += secure_getenv.c
+
+EXTRA_libtests_a_SOURCES += secure_getenv.c
+
+## end   gnulib module secure_getenv
+
+## begin gnulib module select-tests
+
+TESTS += test-select test-select-in.sh test-select-out.sh
+# test-select-stdin has to be run by hand.
+check_PROGRAMS += test-select test-select-fd test-select-stdin
+test_select_LDADD = $(LDADD) @LIB_SELECT@ @LIBSOCKET@ $(INET_PTON_LIB)
+test_select_fd_LDADD = $(LDADD) @LIB_SELECT@
+test_select_stdin_LDADD = $(LDADD) @LIB_SELECT@
+EXTRA_DIST += macros.h signature.h test-select.c test-select.h test-select-fd.c test-select-in.sh test-select-out.sh test-select-stdin.c
+
+## end   gnulib module select-tests
+
+## begin gnulib module setenv-tests
+
+TESTS += test-setenv
+check_PROGRAMS += test-setenv
+EXTRA_DIST += test-setenv.c signature.h macros.h
+
+## end   gnulib module setenv-tests
+
+## begin gnulib module setlocale
+
+
+EXTRA_DIST += setlocale.c
+
+EXTRA_libtests_a_SOURCES += setlocale.c
+
+## end   gnulib module setlocale
+
+## begin gnulib module setlocale-null-tests
+
+TESTS += \
+  test-setlocale_null \
+  test-setlocale_null-mt-one \
+  test-setlocale_null-mt-all
+check_PROGRAMS += \
+  test-setlocale_null \
+  test-setlocale_null-mt-one \
+  test-setlocale_null-mt-all
+test_setlocale_null_LDADD = $(LDADD) @LIB_SETLOCALE_NULL@
+test_setlocale_null_mt_one_LDADD = $(LDADD) @LIB_SETLOCALE_NULL@ $(LIBMULTITHREAD) $(LIB_NANOSLEEP)
+test_setlocale_null_mt_all_LDADD = $(LDADD) @LIB_SETLOCALE_NULL@ $(LIBMULTITHREAD) $(LIB_NANOSLEEP)
+EXTRA_DIST += test-setlocale_null.c test-setlocale_null-mt-one.c test-setlocale_null-mt-all.c
+
+## end   gnulib module setlocale-null-tests
+
+## begin gnulib module setlocale-tests
+
+TESTS += test-setlocale1.sh test-setlocale2.sh
+TESTS_ENVIRONMENT += \
+  LOCALE_FR='@LOCALE_FR@' \
+  LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+  LOCALE_JA='@LOCALE_JA@' \
+  LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+check_PROGRAMS += test-setlocale1 test-setlocale2
+test_setlocale1_LDADD = $(LDADD) @LIB_SETLOCALE@
+test_setlocale2_LDADD = $(LDADD) @LIB_SETLOCALE@
+EXTRA_DIST += test-setlocale1.sh test-setlocale1.c test-setlocale2.sh test-setlocale2.c signature.h macros.h
+
+## end   gnulib module setlocale-tests
+
+## begin gnulib module setsockopt
+
+
+EXTRA_DIST += setsockopt.c w32sock.h
+
+EXTRA_libtests_a_SOURCES += setsockopt.c
+
+## end   gnulib module setsockopt
+
+## begin gnulib module setsockopt-tests
+
+TESTS += test-setsockopt
+check_PROGRAMS += test-setsockopt
+test_setsockopt_LDADD = $(LDADD) @LIBSOCKET@
+EXTRA_DIST += test-setsockopt.c signature.h macros.h
+
+## end   gnulib module setsockopt-tests
+
+## begin gnulib module sigaction-tests
+
+TESTS += test-sigaction
+check_PROGRAMS += test-sigaction
+EXTRA_DIST += test-sigaction.c signature.h macros.h
+
+## end   gnulib module sigaction-tests
+
+## begin gnulib module signal-h-tests
+
+TESTS += test-signal-h
+check_PROGRAMS += test-signal-h
+EXTRA_DIST += test-signal-h.c
+
+## end   gnulib module signal-h-tests
+
+## begin gnulib module signbit-tests
+
+TESTS += test-signbit
+check_PROGRAMS += test-signbit
+
+EXTRA_DIST += test-signbit.c minus-zero.h infinity.h macros.h
+
+## end   gnulib module signbit-tests
+
+## begin gnulib module sigprocmask-tests
+
+TESTS += test-sigprocmask
+check_PROGRAMS += test-sigprocmask
+EXTRA_DIST += test-sigprocmask.c signature.h macros.h
+
+## end   gnulib module sigprocmask-tests
+
+## begin gnulib module sleep
+
+
+EXTRA_DIST += sleep.c
+
+EXTRA_libtests_a_SOURCES += sleep.c
+
+## end   gnulib module sleep
+
+## begin gnulib module sleep-tests
+
+TESTS += test-sleep
+check_PROGRAMS += test-sleep
+EXTRA_DIST += test-sleep.c signature.h macros.h
+
+## end   gnulib module sleep-tests
+
+## begin gnulib module snippet/_Noreturn
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+_NORETURN_H=$(srcdir)/_Noreturn.h
+
+EXTRA_DIST += _Noreturn.h
+
+## end   gnulib module snippet/_Noreturn
+
+## begin gnulib module snippet/arg-nonnull
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+ARG_NONNULL_H=$(srcdir)/arg-nonnull.h
+
+EXTRA_DIST += arg-nonnull.h
+
+## end   gnulib module snippet/arg-nonnull
+
+## begin gnulib module snippet/c++defs
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+CXXDEFS_H=$(srcdir)/c++defs.h
+
+EXTRA_DIST += c++defs.h
+
+## end   gnulib module snippet/c++defs
+
+## begin gnulib module snippet/unused-parameter
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+UNUSED_PARAMETER_H=$(srcdir)/unused-parameter.h
+
+EXTRA_DIST += unused-parameter.h
+
+## end   gnulib module snippet/unused-parameter
+
+## begin gnulib module snippet/warn-on-use
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+WARN_ON_USE_H=$(srcdir)/warn-on-use.h
+
+EXTRA_DIST += warn-on-use.h
+
+## end   gnulib module snippet/warn-on-use
+
+## begin gnulib module snprintf-tests
+
+TESTS += test-snprintf
+check_PROGRAMS += test-snprintf
+
+EXTRA_DIST += test-snprintf.c signature.h macros.h
+
+## end   gnulib module snprintf-tests
+
+## begin gnulib module socket
+
+
+EXTRA_DIST += socket.c w32sock.h
+
+EXTRA_libtests_a_SOURCES += socket.c
+
+## end   gnulib module socket
+
+## begin gnulib module sockets-tests
+
+TESTS += test-sockets
+check_PROGRAMS += test-sockets
+test_sockets_LDADD = $(LDADD) @LIBSOCKET@
+EXTRA_DIST += test-sockets.c
+
+## end   gnulib module sockets-tests
+
+## begin gnulib module stat-tests
+
+TESTS += test-stat
+check_PROGRAMS += test-stat
+test_stat_LDADD = $(LDADD) $(LIBINTL)
+EXTRA_DIST += test-stat.h test-stat.c signature.h macros.h
+
+## end   gnulib module stat-tests
+
+## begin gnulib module stat-time-tests
+
+TESTS += test-stat-time
+check_PROGRAMS += test-stat-time
+test_stat_time_LDADD = $(LDADD) $(LIB_NANOSLEEP)
+EXTRA_DIST += test-stat-time.c macros.h nap.h
+
+## end   gnulib module stat-time-tests
+
+## begin gnulib module statat-tests
+
+TESTS += test-statat
+check_PROGRAMS += test-statat
+test_statat_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-statat.c
+
+## end   gnulib module statat-tests
+
+## begin gnulib module stdalign-tests
+
+TESTS += test-stdalign
+check_PROGRAMS += test-stdalign
+EXTRA_DIST += test-stdalign.c macros.h
+
+## end   gnulib module stdalign-tests
+
+## begin gnulib module stdbool-tests
+
+TESTS += test-stdbool
+check_PROGRAMS += test-stdbool
+EXTRA_DIST += test-stdbool.c
+
+## end   gnulib module stdbool-tests
+
+## begin gnulib module stddef-tests
+
+TESTS += test-stddef
+check_PROGRAMS += test-stddef
+EXTRA_DIST += test-stddef.c
+
+## end   gnulib module stddef-tests
+
+## begin gnulib module stdint-tests
+
+TESTS += test-stdint
+check_PROGRAMS += test-stdint
+EXTRA_DIST += test-stdint.c
+
+## end   gnulib module stdint-tests
+
+## begin gnulib module stdio-tests
+
+TESTS += test-stdio
+check_PROGRAMS += test-stdio
+EXTRA_DIST += test-stdio.c
+
+## end   gnulib module stdio-tests
+
+## begin gnulib module stdlib-tests
+
+TESTS += test-stdlib
+check_PROGRAMS += test-stdlib
+EXTRA_DIST += test-stdlib.c test-sys_wait.h
+
+## end   gnulib module stdlib-tests
+
+## begin gnulib module strerror-tests
+
+TESTS += test-strerror
+check_PROGRAMS += test-strerror
+EXTRA_DIST += test-strerror.c signature.h macros.h
+
+## end   gnulib module strerror-tests
+
+## begin gnulib module strerror_r-posix
+
+
+EXTRA_DIST += strerror_r.c
+
+EXTRA_libtests_a_SOURCES += strerror_r.c
+
+## end   gnulib module strerror_r-posix
+
+## begin gnulib module strerror_r-posix-tests
+
+TESTS += test-strerror_r
+check_PROGRAMS += test-strerror_r
+EXTRA_DIST += test-strerror_r.c signature.h macros.h
+
+## end   gnulib module strerror_r-posix-tests
+
+## begin gnulib module striconv-tests
+
+TESTS += test-striconv
+check_PROGRAMS += test-striconv
+test_striconv_LDADD = $(LDADD) @LIBICONV@
+
+EXTRA_DIST += test-striconv.c macros.h
+
+## end   gnulib module striconv-tests
+
+## begin gnulib module string-tests
+
+TESTS += test-string
+check_PROGRAMS += test-string
+EXTRA_DIST += test-string.c
+
+## end   gnulib module string-tests
+
+## begin gnulib module strncat-tests
+
+TESTS += test-strncat
+check_PROGRAMS += test-strncat
+EXTRA_DIST += test-strncat.c unistr/test-strncat.h zerosize-ptr.h signature.h macros.h
+
+## end   gnulib module strncat-tests
+
+## begin gnulib module strnlen-tests
+
+TESTS += test-strnlen
+check_PROGRAMS += test-strnlen
+EXTRA_DIST += test-strnlen.c zerosize-ptr.h signature.h macros.h
+
+## end   gnulib module strnlen-tests
+
+## begin gnulib module strsignal-tests
+
+TESTS += test-strsignal
+check_PROGRAMS += test-strsignal
+test_strsignal_LDADD = $(LDADD) @LIBINTL@ $(LIBTHREAD)
+EXTRA_DIST += test-strsignal.c signature.h macros.h
+
+## end   gnulib module strsignal-tests
+
+## begin gnulib module strtod-tests
+
+TESTS += test-strtod
+check_PROGRAMS += test-strtod
+
+TESTS += test-strtod1.sh
+TESTS_ENVIRONMENT += \
+  LOCALE_FR='@LOCALE_FR@' \
+  LOCALE_FR_UTF8='@LOCALE_FR_UTF8@'
+check_PROGRAMS += test-strtod1
+test_strtod1_LDADD = $(LDADD) $(LIB_SETLOCALE)
+EXTRA_DIST += test-strtod.c test-strtod1.sh test-strtod1.c signature.h minus-zero.h macros.h
+
+## end   gnulib module strtod-tests
+
+## begin gnulib module strtoimax-tests
+
+TESTS += test-strtoimax
+check_PROGRAMS += test-strtoimax
+EXTRA_DIST += test-strtoimax.c signature.h macros.h
+
+## end   gnulib module strtoimax-tests
+
+## begin gnulib module strtold-tests
+
+TESTS += test-strtold
+check_PROGRAMS += test-strtold
+
+TESTS += test-strtold1.sh
+TESTS_ENVIRONMENT += \
+  LOCALE_FR='@LOCALE_FR@' \
+  LOCALE_FR_UTF8='@LOCALE_FR_UTF8@'
+check_PROGRAMS += test-strtold1
+test_strtold1_LDADD = $(LDADD) $(LIB_SETLOCALE)
+EXTRA_DIST += test-strtold.c test-strtold1.sh test-strtold1.c signature.h minus-zero.h macros.h
+
+## end   gnulib module strtold-tests
+
+## begin gnulib module strtoll-tests
+
+TESTS += test-strtoll
+check_PROGRAMS += test-strtoll
+EXTRA_DIST += test-strtoll.c signature.h macros.h
+
+## end   gnulib module strtoll-tests
+
+## begin gnulib module strtoull-tests
+
+TESTS += test-strtoull
+check_PROGRAMS += test-strtoull
+EXTRA_DIST += test-strtoull.c signature.h macros.h
+
+## end   gnulib module strtoull-tests
+
+## begin gnulib module strtoumax-tests
+
+TESTS += test-strtoumax
+check_PROGRAMS += test-strtoumax
+EXTRA_DIST += test-strtoumax.c signature.h macros.h
+
+## end   gnulib module strtoumax-tests
+
+## begin gnulib module symlink-tests
+
+TESTS += test-symlink
+check_PROGRAMS += test-symlink
+EXTRA_DIST += test-symlink.h test-symlink.c signature.h macros.h
+
+## end   gnulib module symlink-tests
+
+## begin gnulib module symlinkat-tests
+
+TESTS += test-symlinkat
+check_PROGRAMS += test-symlinkat
+test_symlinkat_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-symlink.h test-symlinkat.c signature.h macros.h
+
+## end   gnulib module symlinkat-tests
+
+## begin gnulib module sys_ioctl-tests
+
+TESTS += test-sys_ioctl
+check_PROGRAMS += test-sys_ioctl
+EXTRA_DIST += test-sys_ioctl.c
+
+## end   gnulib module sys_ioctl-tests
+
+## begin gnulib module sys_resource-tests
+
+TESTS += test-sys_resource
+check_PROGRAMS += test-sys_resource
+EXTRA_DIST += test-sys_resource.c
+
+## end   gnulib module sys_resource-tests
+
+## begin gnulib module sys_select-tests
+
+TESTS += test-sys_select
+check_PROGRAMS += test-sys_select
+EXTRA_DIST += test-sys_select.c signature.h
+
+## end   gnulib module sys_select-tests
+
+## begin gnulib module sys_socket-tests
+
+TESTS += test-sys_socket
+check_PROGRAMS += test-sys_socket
+EXTRA_DIST += test-sys_socket.c
+
+## end   gnulib module sys_socket-tests
+
+## begin gnulib module sys_stat-tests
+
+TESTS += test-sys_stat
+check_PROGRAMS += test-sys_stat
+EXTRA_DIST += test-sys_stat.c
+
+## end   gnulib module sys_stat-tests
+
+## begin gnulib module sys_time-tests
+
+TESTS += test-sys_time
+check_PROGRAMS += test-sys_time
+EXTRA_DIST += test-sys_time.c
+
+## end   gnulib module sys_time-tests
+
+## begin gnulib module sys_types-tests
+
+TESTS += test-sys_types
+check_PROGRAMS += test-sys_types
+EXTRA_DIST += test-sys_types.c
+
+## end   gnulib module sys_types-tests
+
+## begin gnulib module sys_uio-tests
+
+TESTS += test-sys_uio
+check_PROGRAMS += test-sys_uio
+EXTRA_DIST += test-sys_uio.c
+
+## end   gnulib module sys_uio-tests
+
+## begin gnulib module sys_utsname-tests
+
+TESTS += test-sys_utsname
+check_PROGRAMS += test-sys_utsname
+EXTRA_DIST += test-sys_utsname.c
+
+## end   gnulib module sys_utsname-tests
+
+## begin gnulib module sys_wait-tests
+
+TESTS += test-sys_wait
+check_PROGRAMS += test-sys_wait
+EXTRA_DIST += test-sys_wait.c test-sys_wait.h
+
+## end   gnulib module sys_wait-tests
+
+## begin gnulib module termios-tests
+
+TESTS += test-termios
+check_PROGRAMS += test-termios
+EXTRA_DIST += test-termios.c
+
+## end   gnulib module termios-tests
+
+## begin gnulib module test-framework-sh-tests
+
+TESTS += test-init.sh
+EXTRA_DIST += init.sh
+EXTRA_DIST += test-init.sh
+
+## end   gnulib module test-framework-sh-tests
+
+## begin gnulib module thread
+
+libtests_a_SOURCES += glthread/thread.h glthread/thread.c
+
+## end   gnulib module thread
+
+## begin gnulib module thread-tests
+
+TESTS += test-thread_self test-thread_create
+check_PROGRAMS += test-thread_self test-thread_create
+test_thread_self_LDADD = $(LDADD) @LIBTHREAD@
+test_thread_create_LDADD = $(LDADD) @LIBMULTITHREAD@
+EXTRA_DIST += test-thread_self.c test-thread_create.c macros.h
+
+## end   gnulib module thread-tests
+
+## begin gnulib module time-tests
+
+TESTS += test-time
+check_PROGRAMS += test-time
+EXTRA_DIST += test-time.c
+
+## end   gnulib module time-tests
+
+## begin gnulib module timespec-add
+
+libtests_a_SOURCES += timespec-add.c
+
+## end   gnulib module timespec-add
+
+## begin gnulib module timespec-sub
+
+libtests_a_SOURCES += timespec-sub.c
+
+## end   gnulib module timespec-sub
+
+## begin gnulib module timespec-tests
+
+TESTS += test-timespec
+check_PROGRAMS += test-timespec
+EXTRA_DIST += test-timespec.c macros.h
+
+## end   gnulib module timespec-tests
+
+## begin gnulib module tls-tests
+
+TESTS += test-tls
+check_PROGRAMS += test-tls
+test_tls_LDADD = $(LDADD) @LIBMULTITHREAD@ @YIELD_LIB@
+
+EXTRA_DIST += test-tls.c
+
+## end   gnulib module tls-tests
+
+## begin gnulib module tmpdir
+
+libtests_a_SOURCES += tmpdir.h tmpdir.c
+
+## end   gnulib module tmpdir
+
+## begin gnulib module tmpfile
+
+
+EXTRA_DIST += tmpfile.c
+
+EXTRA_libtests_a_SOURCES += tmpfile.c
+
+## end   gnulib module tmpfile
+
+## begin gnulib module u64-tests
+
+TESTS += test-u64
+check_PROGRAMS += test-u64
+EXTRA_DIST += test-u64.c
+
+## end   gnulib module u64-tests
+
+## begin gnulib module uname-tests
+
+TESTS += test-uname
+check_PROGRAMS += test-uname
+test_uname_LDADD = $(LDADD) @GETHOSTNAME_LIB@
+EXTRA_DIST += test-uname.c signature.h macros.h
+
+## end   gnulib module uname-tests
+
+## begin gnulib module unistd-safer-tests
+
+TESTS += test-dup-safer
+check_PROGRAMS += test-dup-safer
+EXTRA_DIST += test-dup-safer.c macros.h
+
+## end   gnulib module unistd-safer-tests
+
+## begin gnulib module unistd-tests
+
+TESTS += test-unistd
+check_PROGRAMS += test-unistd
+EXTRA_DIST += test-unistd.c
+
+## end   gnulib module unistd-tests
+
+## begin gnulib module unistr/u8-mbtoucr-tests
+
+TESTS += test-u8-mbtoucr
+check_PROGRAMS += test-u8-mbtoucr
+test_u8_mbtoucr_SOURCES = unistr/test-u8-mbtoucr.c
+test_u8_mbtoucr_LDADD = $(LDADD) $(LIBUNISTRING)
+EXTRA_DIST += unistr/test-u8-mbtoucr.c macros.h
+
+## end   gnulib module unistr/u8-mbtoucr-tests
+
+## begin gnulib module unistr/u8-uctomb-tests
+
+TESTS += test-u8-uctomb
+check_PROGRAMS += test-u8-uctomb
+test_u8_uctomb_SOURCES = unistr/test-u8-uctomb.c
+test_u8_uctomb_LDADD = $(LDADD) $(LIBUNISTRING)
+EXTRA_DIST += unistr/test-u8-uctomb.c macros.h
+
+## end   gnulib module unistr/u8-uctomb-tests
+
+## begin gnulib module uniwidth/width-tests
+
+TESTS += test-uc_width uniwidth/test-uc_width2.sh
+check_PROGRAMS += test-uc_width test-uc_width2
+test_uc_width_SOURCES = uniwidth/test-uc_width.c
+test_uc_width_LDADD = $(LDADD) $(LIBUNISTRING)
+test_uc_width2_SOURCES = uniwidth/test-uc_width2.c
+test_uc_width2_LDADD = $(LDADD) $(LIBUNISTRING)
+EXTRA_DIST += uniwidth/test-uc_width.c uniwidth/test-uc_width2.c uniwidth/test-uc_width2.sh macros.h
+
+## end   gnulib module uniwidth/width-tests
+
+## begin gnulib module unlink-tests
+
+TESTS += test-unlink
+check_PROGRAMS += test-unlink
+EXTRA_DIST += test-unlink.h test-unlink.c signature.h macros.h
+
+## end   gnulib module unlink-tests
+
+## begin gnulib module unlinkat-tests
+
+TESTS += test-unlinkat
+check_PROGRAMS += test-unlinkat
+test_unlinkat_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-unlinkat.c test-rmdir.h test-unlink.h signature.h macros.h
+
+## end   gnulib module unlinkat-tests
+
+## begin gnulib module unsetenv-tests
+
+TESTS += test-unsetenv
+check_PROGRAMS += test-unsetenv
+EXTRA_DIST += test-unsetenv.c signature.h macros.h
+
+## end   gnulib module unsetenv-tests
+
+## begin gnulib module update-copyright-tests
+
+TESTS += test-update-copyright.sh
+TESTS_ENVIRONMENT += abs_aux_dir='$(abs_aux_dir)'
+EXTRA_DIST += test-update-copyright.sh
+
+## end   gnulib module update-copyright-tests
+
+## begin gnulib module userspec-tests
+
+TESTS += test-userspec
+check_PROGRAMS += test-userspec
+test_userspec_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-userspec.c
+
+## end   gnulib module userspec-tests
+
+## begin gnulib module usleep
+
+
+EXTRA_DIST += usleep.c
+
+EXTRA_libtests_a_SOURCES += usleep.c
+
+## end   gnulib module usleep
+
+## begin gnulib module usleep-tests
+
+TESTS += test-usleep
+check_PROGRAMS += test-usleep
+EXTRA_DIST += test-usleep.c signature.h macros.h
+
+## end   gnulib module usleep-tests
+
+## begin gnulib module utime-h-tests
+
+TESTS += test-utime-h
+check_PROGRAMS += test-utime-h
+EXTRA_DIST += test-utime-h.c
+
+## end   gnulib module utime-h-tests
+
+## begin gnulib module utime-tests
+
+TESTS += test-utime
+check_PROGRAMS += test-utime
+test_utime_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) $(LIB_NANOSLEEP) @LIBINTL@
+EXTRA_DIST += test-utime.c nap.h test-utimens-common.h macros.h
+
+## end   gnulib module utime-tests
+
+## begin gnulib module utimens-tests
+
+TESTS += test-utimens
+check_PROGRAMS += test-utimens
+test_utimens_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) $(LIB_NANOSLEEP) @LIBINTL@
+EXTRA_DIST += nap.h test-futimens.h test-lutimens.h test-utimens.h test-utimens-common.h test-utimens.c macros.h
+
+## end   gnulib module utimens-tests
+
+## begin gnulib module utimensat-tests
+
+TESTS += test-utimensat
+check_PROGRAMS += test-utimensat
+test_utimensat_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) $(LIB_NANOSLEEP) @LIBINTL@
+EXTRA_DIST += nap.h test-lutimens.h test-utimens.h test-utimens-common.h test-utimensat.c signature.h macros.h
+
+## end   gnulib module utimensat-tests
+
+## begin gnulib module vasnprintf-tests
+
+TESTS += test-vasnprintf
+check_PROGRAMS += test-vasnprintf
+
+EXTRA_DIST += test-vasnprintf.c macros.h
+
+## end   gnulib module vasnprintf-tests
+
+## begin gnulib module vasprintf-posix-tests
+
+TESTS += test-vasprintf-posix
+check_PROGRAMS += test-vasprintf-posix
+
+EXTRA_DIST += test-vasprintf-posix.c minus-zero.h infinity.h nan.h macros.h
+
+## end   gnulib module vasprintf-posix-tests
+
+## begin gnulib module vasprintf-tests
+
+TESTS += test-vasprintf
+check_PROGRAMS += test-vasprintf
+
+EXTRA_DIST += test-vasprintf.c signature.h macros.h
+
+## end   gnulib module vasprintf-tests
+
+## begin gnulib module vc-list-files-tests
+
+TESTS += test-vc-list-files-git.sh
+TESTS += test-vc-list-files-cvs.sh
+TESTS_ENVIRONMENT += abs_aux_dir='$(abs_aux_dir)'
+EXTRA_DIST += test-vc-list-files-git.sh test-vc-list-files-cvs.sh
+
+## end   gnulib module vc-list-files-tests
+
+## begin gnulib module verify-tests
+
+TESTS_ENVIRONMENT += MAKE='$(MAKE)'
+TESTS += test-verify test-verify.sh
+check_PROGRAMS += test-verify
+# test-verify-try is never built, but test-verify.sh needs a rule to
+# build test-verify-try.o.
+EXTRA_PROGRAMS += test-verify-try
+
+# This test expects compilation of test-verify-try.c to fail, and
+# each time it fails, the makefile rule does not perform the usual
+#  "mv -f $name.Tpo $name.po, so tell make clean to remove that file.
+MOSTLYCLEANFILES += .deps/test-verify-try.Tpo
+EXTRA_DIST += test-verify.c test-verify-try.c test-verify.sh
+
+## end   gnulib module verify-tests
+
+## begin gnulib module version-etc-tests
+
+TESTS += test-version-etc.sh
+check_PROGRAMS += test-version-etc
+test_version_etc_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-version-etc.c test-version-etc.sh
+
+## end   gnulib module version-etc-tests
+
+## begin gnulib module vfprintf-posix-tests
+
+TESTS += test-vfprintf-posix.sh
+check_PROGRAMS += test-vfprintf-posix
+EXTRA_DIST += test-vfprintf-posix.sh test-vfprintf-posix.c test-fprintf-posix.h test-printf-posix.output infinity.h signature.h macros.h
+
+## end   gnulib module vfprintf-posix-tests
+
+## begin gnulib module vprintf-posix-tests
+
+TESTS += test-vprintf-posix.sh
+check_PROGRAMS += test-vprintf-posix
+EXTRA_DIST += test-vprintf-posix.sh test-vprintf-posix.c test-printf-posix.h test-printf-posix.output infinity.h signature.h macros.h
+
+## end   gnulib module vprintf-posix-tests
+
+## begin gnulib module wchar-tests
+
+TESTS += test-wchar
+check_PROGRAMS += test-wchar
+EXTRA_DIST += test-wchar.c
+
+## end   gnulib module wchar-tests
+
+## begin gnulib module wcrtomb-tests
+
+TESTS += \
+  test-wcrtomb.sh \
+  test-wcrtomb-w32-1.sh test-wcrtomb-w32-2.sh test-wcrtomb-w32-3.sh \
+  test-wcrtomb-w32-4.sh test-wcrtomb-w32-5.sh test-wcrtomb-w32-6.sh \
+  test-wcrtomb-w32-7.sh
+TESTS_ENVIRONMENT += \
+  LOCALE_FR='@LOCALE_FR@' \
+  LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+  LOCALE_JA='@LOCALE_JA@' \
+  LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+check_PROGRAMS += test-wcrtomb test-wcrtomb-w32
+test_wcrtomb_LDADD = $(LDADD) $(LIB_SETLOCALE)
+EXTRA_DIST += test-wcrtomb.sh test-wcrtomb.c test-wcrtomb-w32-1.sh test-wcrtomb-w32-2.sh test-wcrtomb-w32-3.sh test-wcrtomb-w32-4.sh test-wcrtomb-w32-5.sh test-wcrtomb-w32-6.sh test-wcrtomb-w32-7.sh test-wcrtomb-w32.c signature.h macros.h
+
+## end   gnulib module wcrtomb-tests
+
+## begin gnulib module wctob
+
+
+EXTRA_DIST += wctob.c
+
+EXTRA_libtests_a_SOURCES += wctob.c
+
+## end   gnulib module wctob
+
+## begin gnulib module wctomb
+
+
+EXTRA_DIST += wctomb-impl.h wctomb.c
+
+EXTRA_libtests_a_SOURCES += wctomb.c
+
+## end   gnulib module wctomb
+
+## begin gnulib module wctype-h-tests
+
+TESTS += test-wctype-h
+check_PROGRAMS += test-wctype-h
+EXTRA_DIST += test-wctype-h.c macros.h
+
+## end   gnulib module wctype-h-tests
+
+## begin gnulib module wcwidth-tests
+
+TESTS += test-wcwidth
+check_PROGRAMS += test-wcwidth
+test_wcwidth_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIBUNISTRING)
+EXTRA_DIST += test-wcwidth.c signature.h macros.h
+
+## end   gnulib module wcwidth-tests
+
+## begin gnulib module write-tests
+
+TESTS += test-write
+check_PROGRAMS += test-write
+EXTRA_DIST += test-write.c signature.h macros.h
+
+## end   gnulib module write-tests
+
+## begin gnulib module xalloc-die-tests
+
+TESTS += test-xalloc-die.sh
+check_PROGRAMS += test-xalloc-die
+test_xalloc_die_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-xalloc-die.c test-xalloc-die.sh
+
+## end   gnulib module xalloc-die-tests
+
+## begin gnulib module xprintf-posix-tests
+
+TESTS += test-xprintf-posix.sh
+check_PROGRAMS += test-xfprintf-posix test-xprintf-posix
+test_xfprintf_posix_LDADD = $(LDADD) @LIBINTL@
+test_xprintf_posix_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-xprintf-posix.sh test-xfprintf-posix.c test-xprintf-posix.c test-fprintf-posix.h test-printf-posix.h test-printf-posix.output infinity.h macros.h
+
+## end   gnulib module xprintf-posix-tests
+
+## begin gnulib module xstrtoimax-tests
+
+TESTS += test-xstrtoimax.sh
+check_PROGRAMS += test-xstrtoimax
+test_xstrtoimax_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-xstrtoimax.c test-xstrtoimax.sh
+
+## end   gnulib module xstrtoimax-tests
+
+## begin gnulib module xstrtol-tests
+
+TESTS += test-xstrtol.sh
+check_PROGRAMS += test-xstrtol test-xstrtoul
+test_xstrtol_LDADD = $(LDADD) @LIBINTL@
+test_xstrtoul_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-xstrtol.c test-xstrtoul.c test-xstrtol.sh
+
+## end   gnulib module xstrtol-tests
+
+## begin gnulib module xstrtoumax-tests
+
+TESTS += test-xstrtoumax.sh
+check_PROGRAMS += test-xstrtoumax
+test_xstrtoumax_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-xstrtoumax.c test-xstrtoumax.sh
+
+## end   gnulib module xstrtoumax-tests
+
+## begin gnulib module xvasprintf-tests
+
+TESTS += test-xvasprintf
+check_PROGRAMS += test-xvasprintf
+test_xvasprintf_LDADD = $(LDADD) @LIBINTL@
+
+EXTRA_DIST += test-xvasprintf.c macros.h
+
+## end   gnulib module xvasprintf-tests
+
+## begin gnulib module yesno-tests
+
+TESTS += test-yesno.sh
+check_PROGRAMS += test-yesno
+test_yesno_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC)
+EXTRA_DIST += test-yesno.c test-yesno.sh
+
+## end   gnulib module yesno-tests
+
+## begin gnulib module yield
+
+libtests_a_SOURCES += glthread/yield.h
+
+## end   gnulib module yield
+
+# Clean up after Solaris cc.
+clean-local:
+	rm -rf SunWS_cache
+
+mostlyclean-local: mostlyclean-generic
+	@for dir in '' $(MOSTLYCLEANDIRS); do \
+	  if test -n "$$dir" && test -d $$dir; then \
+	    echo "rmdir $$dir"; rmdir $$dir; \
+	  fi; \
+	done; \
+	:
diff --git a/gnulib-tests/inet_pton.c b/gnulib-tests/inet_pton.c
new file mode 100644
index 0000000..3e392fc
--- /dev/null
+++ b/gnulib-tests/inet_pton.c
@@ -0,0 +1,268 @@
+/* inet_pton.c -- convert IPv4 and IPv6 addresses from text to binary form
+
+   Copyright (C) 2006, 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/*
+ * Copyright (c) 1996,1999 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#include <config.h>
+
+/* Specification.  */
+#include <arpa/inet.h>
+
+#if HAVE_DECL_INET_PTON
+
+# undef inet_pton
+
+int
+rpl_inet_pton (int af, const char *restrict src, void *restrict dst)
+{
+  return inet_pton (af, src, dst);
+}
+
+#else
+
+# include <c-ctype.h>
+# include <string.h>
+# include <errno.h>
+
+# define NS_INADDRSZ 4
+# define NS_IN6ADDRSZ 16
+# define NS_INT16SZ 2
+
+/*
+ * WARNING: Don't even consider trying to compile this on a system where
+ * sizeof(int) < 4.  sizeof(int) > 4 is fine; all the world's not a VAX.
+ */
+
+static int inet_pton4 (const char *src, unsigned char *dst);
+# if HAVE_IPV6
+static int inet_pton6 (const char *src, unsigned char *dst);
+# endif
+
+/* int
+ * inet_pton(af, src, dst)
+ *      convert from presentation format (which usually means ASCII printable)
+ *      to network format (which is usually some kind of binary format).
+ * return:
+ *      1 if the address was valid for the specified address family
+ *      0 if the address wasn't valid ('dst' is untouched in this case)
+ *      -1 if some other error occurred ('dst' is untouched in this case, too)
+ * author:
+ *      Paul Vixie, 1996.
+ */
+int
+inet_pton (int af, const char *restrict src, void *restrict dst)
+{
+  switch (af)
+    {
+    case AF_INET:
+      return (inet_pton4 (src, dst));
+
+# if HAVE_IPV6
+    case AF_INET6:
+      return (inet_pton6 (src, dst));
+# endif
+
+    default:
+      errno = EAFNOSUPPORT;
+      return (-1);
+    }
+  /* NOTREACHED */
+}
+
+/* int
+ * inet_pton4(src, dst)
+ *      like inet_aton() but without all the hexadecimal, octal (with the
+ *      exception of 0) and shorthand.
+ * return:
+ *      1 if 'src' is a valid dotted quad, else 0.
+ * notice:
+ *      does not touch 'dst' unless it's returning 1.
+ * author:
+ *      Paul Vixie, 1996.
+ */
+static int
+inet_pton4 (const char *restrict src, unsigned char *restrict dst)
+{
+  int saw_digit, octets, ch;
+  unsigned char tmp[NS_INADDRSZ], *tp;
+
+  saw_digit = 0;
+  octets = 0;
+  *(tp = tmp) = 0;
+  while ((ch = *src++) != '\0')
+    {
+
+      if (ch >= '0' && ch <= '9')
+        {
+          unsigned new = *tp * 10 + (ch - '0');
+
+          if (saw_digit && *tp == 0)
+            return (0);
+          if (new > 255)
+            return (0);
+          *tp = new;
+          if (!saw_digit)
+            {
+              if (++octets > 4)
+                return (0);
+              saw_digit = 1;
+            }
+        }
+      else if (ch == '.' && saw_digit)
+        {
+          if (octets == 4)
+            return (0);
+          *++tp = 0;
+          saw_digit = 0;
+        }
+      else
+        return (0);
+    }
+  if (octets < 4)
+    return (0);
+  memcpy (dst, tmp, NS_INADDRSZ);
+  return (1);
+}
+
+# if HAVE_IPV6
+
+/* int
+ * inet_pton6(src, dst)
+ *      convert presentation level address to network order binary form.
+ * return:
+ *      1 if 'src' is a valid [RFC1884 2.2] address, else 0.
+ * notice:
+ *      (1) does not touch 'dst' unless it's returning 1.
+ *      (2) :: in a full address is silently ignored.
+ * credit:
+ *      inspired by Mark Andrews.
+ * author:
+ *      Paul Vixie, 1996.
+ */
+static int
+inet_pton6 (const char *restrict src, unsigned char *restrict dst)
+{
+  static const char xdigits[] = "0123456789abcdef";
+  unsigned char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp;
+  const char *curtok;
+  int ch, saw_xdigit;
+  unsigned val;
+
+  tp = memset (tmp, '\0', NS_IN6ADDRSZ);
+  endp = tp + NS_IN6ADDRSZ;
+  colonp = NULL;
+  /* Leading :: requires some special handling. */
+  if (*src == ':')
+    if (*++src != ':')
+      return (0);
+  curtok = src;
+  saw_xdigit = 0;
+  val = 0;
+  while ((ch = c_tolower (*src++)) != '\0')
+    {
+      const char *pch;
+
+      pch = strchr (xdigits, ch);
+      if (pch != NULL)
+        {
+          val <<= 4;
+          val |= (pch - xdigits);
+          if (val > 0xffff)
+            return (0);
+          saw_xdigit = 1;
+          continue;
+        }
+      if (ch == ':')
+        {
+          curtok = src;
+          if (!saw_xdigit)
+            {
+              if (colonp)
+                return (0);
+              colonp = tp;
+              continue;
+            }
+          else if (*src == '\0')
+            {
+              return (0);
+            }
+          if (tp + NS_INT16SZ > endp)
+            return (0);
+          *tp++ = (u_char) (val >> 8) & 0xff;
+          *tp++ = (u_char) val & 0xff;
+          saw_xdigit = 0;
+          val = 0;
+          continue;
+        }
+      if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
+          inet_pton4 (curtok, tp) > 0)
+        {
+          tp += NS_INADDRSZ;
+          saw_xdigit = 0;
+          break;                /* '\0' was seen by inet_pton4(). */
+        }
+      return (0);
+    }
+  if (saw_xdigit)
+    {
+      if (tp + NS_INT16SZ > endp)
+        return (0);
+      *tp++ = (u_char) (val >> 8) & 0xff;
+      *tp++ = (u_char) val & 0xff;
+    }
+  if (colonp != NULL)
+    {
+      /*
+       * Since some memmove()'s erroneously fail to handle
+       * overlapping regions, we'll do the shift by hand.
+       */
+      const int n = tp - colonp;
+      int i;
+
+      if (tp == endp)
+        return (0);
+      for (i = 1; i <= n; i++)
+        {
+          endp[-i] = colonp[n - i];
+          colonp[n - i] = 0;
+        }
+      tp = endp;
+    }
+  if (tp != endp)
+    return (0);
+  memcpy (dst, tmp, NS_IN6ADDRSZ);
+  return (1);
+}
+
+# endif
+
+#endif
diff --git a/gnulib-tests/infinity.h b/gnulib-tests/infinity.h
new file mode 100644
index 0000000..d8bf1a8
--- /dev/null
+++ b/gnulib-tests/infinity.h
@@ -0,0 +1,66 @@
+/* Macros for infinity.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+
+/* Infinityf () returns a 'float' +Infinity.  */
+
+/* The Microsoft MSVC 9 compiler chokes on the expression 1.0f / 0.0f.
+   The IBM XL C compiler on z/OS complains.
+   PGI 16.10 complains.  */
+#if defined _MSC_VER || (defined __MVS__ && defined __IBMC__) || defined __PGI
+static float
+Infinityf ()
+{
+  static float zero = 0.0f;
+  return 1.0f / zero;
+}
+#else
+# define Infinityf() (1.0f / 0.0f)
+#endif
+
+
+/* Infinityd () returns a 'double' +Infinity.  */
+
+/* The Microsoft MSVC 9 compiler chokes on the expression 1.0 / 0.0.
+   The IBM XL C compiler on z/OS complains.
+   PGI 16.10 complains.  */
+#if defined _MSC_VER || (defined __MVS__ && defined __IBMC__) || defined __PGI
+static double
+Infinityd ()
+{
+  static double zero = 0.0;
+  return 1.0 / zero;
+}
+#else
+# define Infinityd() (1.0 / 0.0)
+#endif
+
+
+/* Infinityl () returns a 'long double' +Infinity.  */
+
+/* The Microsoft MSVC 9 compiler chokes on the expression 1.0L / 0.0L.
+   The IBM XL C compiler on z/OS complains.
+   PGI 16.10 complains.  */
+#if defined _MSC_VER || (defined __MVS__ && defined __IBMC__) || defined __PGI
+static long double
+Infinityl ()
+{
+  static long double zero = 0.0L;
+  return 1.0L / zero;
+}
+#else
+# define Infinityl() (1.0L / 0.0L)
+#endif
diff --git a/gnulib-tests/init.sh b/gnulib-tests/init.sh
new file mode 100644
index 0000000..b4a5944
--- /dev/null
+++ b/gnulib-tests/init.sh
@@ -0,0 +1,683 @@
+# source this file; set up for tests
+
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Using this file in a test
+# =========================
+#
+# The typical skeleton of a test looks like this:
+#
+#   #!/bin/sh
+#   . "${srcdir=.}/init.sh"; path_prepend_ .
+#   Execute some commands.
+#   Note that these commands are executed in a subdirectory, therefore you
+#   need to prepend "../" to relative filenames in the build directory.
+#   Note that the "path_prepend_ ." is useful only if the body of your
+#   test invokes programs residing in the initial directory.
+#   For example, if the programs you want to test are in src/, and this test
+#   script is named tests/test-1, then you would use "path_prepend_ ../src",
+#   or perhaps export PATH='$(abs_top_builddir)/src$(PATH_SEPARATOR)'"$$PATH"
+#   to all tests via automake's TESTS_ENVIRONMENT.
+#   Set the exit code 0 for success, 77 for skipped, or 1 or other for failure.
+#   Use the skip_ and fail_ functions to print a diagnostic and then exit
+#   with the corresponding exit code.
+#   Exit $?
+
+# Executing a test that uses this file
+# ====================================
+#
+# Running a single test:
+#   $ make check TESTS=test-foo.sh
+#
+# Running a single test, with verbose output:
+#   $ make check TESTS=test-foo.sh VERBOSE=yes
+#
+# Running a single test, keeping the temporary directory:
+#   $ make check TESTS=test-foo.sh KEEP=yes
+#
+# Running a single test, with single-stepping:
+#   1. Go into a sub-shell:
+#   $ bash
+#   2. Set relevant environment variables from TESTS_ENVIRONMENT in the
+#      Makefile:
+#   $ export srcdir=../../tests # this is an example
+#   3. Execute the commands from the test, copy&pasting them one by one:
+#   $ . "$srcdir/init.sh"; path_prepend_ .
+#   ...
+#   4. Finally
+#   $ exit
+
+# =============================================================================
+# Elementary diagnostics
+
+ME_=`expr "./$0" : '.*/\(.*\)$'`
+
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
+  # contains only /bin. Note that ksh looks also at the FPATH variable,
+  # so we have to set that as well for the test.
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+    && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+           || PATH_SEPARATOR=';'
+       }
+fi
+
+# We use a trap below for cleanup.  This requires us to go through
+# hoops to get the right exit status transported through the handler.
+# So use 'Exit STATUS' instead of 'exit STATUS' inside of the tests.
+# Turn off errexit here so that we don't trip the bug with OSF1/Tru64
+# sh inside this function.
+Exit () { set +e; (exit $1); exit $1; }
+
+# Print warnings (e.g., about skipped and failed tests) to this file number.
+# Override by defining to say, 9, in init.cfg, and putting say,
+#   export ...ENVVAR_SETTINGS...; $(SHELL) 9>&2
+# in the definition of TESTS_ENVIRONMENT in your tests/Makefile.am file.
+# This is useful when using automake's parallel tests mode, to print
+# the reason for skip/failure to console, rather than to the .log files.
+: ${stderr_fileno_=2}
+
+# Note that correct expansion of "$*" depends on IFS starting with ' '.
+# Always write the full diagnostic to stderr.
+# When stderr_fileno_ is not 2, also emit the first line of the
+# diagnostic to that file descriptor.
+warn_ ()
+{
+  # If IFS does not start with ' ', set it and emit the warning in a subshell.
+  case $IFS in
+    ' '*) printf '%s\n' "$*" >&2
+          test $stderr_fileno_ = 2 \
+            || { printf '%s\n' "$*" | sed 1q >&$stderr_fileno_ ; } ;;
+    *) (IFS=' '; warn_ "$@");;
+  esac
+}
+fail_ () { warn_ "$ME_: failed test: $@"; Exit 1; }
+skip_ () { warn_ "$ME_: skipped test: $@"; Exit 77; }
+fatal_ () { warn_ "$ME_: hard error: $@"; Exit 99; }
+framework_failure_ () { warn_ "$ME_: set-up failure: $@"; Exit 99; }
+
+# =============================================================================
+# Ensure the shell supports modern syntax.
+
+# Sanitize this shell to POSIX mode, if possible.
+DUALCASE=1; export DUALCASE
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in
+    *posix*) set -o posix ;;
+  esac
+fi
+
+# We require $(...) support unconditionally.
+# We require that the printf built-in work correctly regarding octal escapes;
+# this eliminates /bin/sh on AIX 7.2.
+# We require non-surprising "local" semantics (this eliminates dash).
+# This takes the admittedly draconian step of eliminating dash, because the
+# assignment tab=$(printf '\t') works fine, yet preceding it with "local "
+# transforms it into an assignment that sets the variable to the empty string.
+# That is too counter-intuitive, and can lead to subtle run-time malfunction.
+# The example below is less subtle in that with dash, it evokes the run-time
+# exception "dash: 1: local: 1: bad variable name".
+# We require a few additional shell features only when $EXEEXT is nonempty,
+# in order to support automatic $EXEEXT emulation:
+# - hyphen-containing alias names
+# - we prefer to use ${var#...} substitution, rather than having
+#   to work around lack of support for that feature.
+# The following code attempts to find a shell with support for these features.
+# If the current shell passes the test, we're done.  Otherwise, test other
+# shells until we find one that passes.  If one is found, re-exec it.
+# If no acceptable shell is found, skip the current test.
+#
+# The "...set -x; P=1 true 2>err..." test is to disqualify any shell that
+# emits "P=1" into err, as /bin/sh from SunOS 5.11 and OpenBSD 4.7 do.
+#
+# Use "9" to indicate success (rather than 0), in case some shell acts
+# like Solaris 10's /bin/sh but exits successfully instead of with status 2.
+
+# Eval this code in a subshell to determine a shell's suitability.
+# 10 - passes all tests; ok to use
+#  9 - ok, but enabling "set -x" corrupts app stderr; prefer higher score
+#  ? - not ok
+gl_shell_test_script_='
+test $(echo y) = y || exit 1
+LC_ALL=en_US.UTF-8 printf "\\351" 2>/dev/null \
+  | LC_ALL=C tr "\\351" x | LC_ALL=C grep "^x$" > /dev/null \
+  || exit 1
+printf "\\351" 2>/dev/null \
+  | LC_ALL=C tr "\\351" x | LC_ALL=C grep "^x$" > /dev/null \
+  || exit 1
+f_local_() { local v=1; }; f_local_ || exit 1
+f_dash_local_fail_() { local t=$(printf " 1"); }; f_dash_local_fail_
+score_=10
+if test "$VERBOSE" = yes; then
+  test -n "$( (exec 3>&1; set -x; P=1 true 2>&3) 2> /dev/null)" && score_=9
+fi
+test -z "$EXEEXT" && exit $score_
+shopt -s expand_aliases
+alias a-b="echo zoo"
+v=abx
+     test ${v%x} = ab \
+  && test ${v#a} = bx \
+  && test $(a-b) = zoo \
+  && exit $score_
+'
+
+if test "x$1" = "x--no-reexec"; then
+  shift
+else
+  # Assume a working shell.  Export to subshells (setup_ needs this).
+  gl_set_x_corrupts_stderr_=false
+  export gl_set_x_corrupts_stderr_
+
+  # Record the first marginally acceptable shell.
+  marginal_=
+
+  # Search for a shell that meets our requirements.
+  for re_shell_ in __current__ "${CONFIG_SHELL:-no_shell}" \
+      /bin/sh bash dash zsh pdksh fail
+  do
+    test "$re_shell_" = no_shell && continue
+
+    # If we've made it all the way to the sentinel, "fail" without
+    # finding even a marginal shell, skip this test.
+    if test "$re_shell_" = fail; then
+      test -z "$marginal_" && skip_ failed to find an adequate shell
+      re_shell_=$marginal_
+      break
+    fi
+
+    # When testing the current shell, simply "eval" the test code.
+    # Otherwise, run it via $re_shell_ -c ...
+    if test "$re_shell_" = __current__; then
+      # 'eval'ing this code makes Solaris 10's /bin/sh exit with
+      # $? set to 2.  It does not evaluate any of the code after the
+      # "unexpected" first '('.  Thus, we must run it in a subshell.
+      ( eval "$gl_shell_test_script_" ) > /dev/null 2>&1
+    else
+      "$re_shell_" -c "$gl_shell_test_script_" 2>/dev/null
+    fi
+
+    st_=$?
+
+    # $re_shell_ works just fine.  Use it.
+    if test $st_ = 10; then
+      gl_set_x_corrupts_stderr_=false
+      break
+    fi
+
+    # If this is our first marginally acceptable shell, remember it.
+    if test "$st_:$marginal_" = 9: ; then
+      marginal_="$re_shell_"
+      gl_set_x_corrupts_stderr_=true
+    fi
+  done
+
+  if test "$re_shell_" != __current__; then
+    # Found a usable shell.  Preserve -v and -x.
+    case $- in
+      *v*x* | *x*v*) opts_=-vx ;;
+      *v*) opts_=-v ;;
+      *x*) opts_=-x ;;
+      *) opts_= ;;
+    esac
+    re_shell=$re_shell_
+    export re_shell
+    exec "$re_shell_" $opts_ "$0" --no-reexec "$@"
+    echo "$ME_: exec failed" 1>&2
+    exit 127
+  fi
+fi
+
+# =============================================================================
+# Ensure the shell behaves reasonably.
+
+# If this is bash, turn off all aliases.
+test -n "$BASH_VERSION" && unalias -a
+
+# Note that when supporting $EXEEXT (transparently mapping from PROG_NAME to
+# PROG_NAME.exe), we want to support hyphen-containing names like test-acos.
+# That is part of the shell-selection test above.  Why use aliases rather
+# than functions?  Because support for hyphen-containing aliases is more
+# widespread than that for hyphen-containing function names.
+test -n "$EXEEXT" && test -n "$BASH_VERSION" && shopt -s expand_aliases
+
+# =============================================================================
+# Creating a temporary directory (needed by the core test framework)
+
+# Create a temporary directory, much like mktemp -d does.
+# Written by Jim Meyering.
+#
+# Usage: mktempd_ /tmp phoey.XXXXXXXXXX
+#
+# First, try to use the mktemp program.
+# Failing that, we'll roll our own mktemp-like function:
+#  - try to get random bytes from /dev/urandom
+#  - failing that, generate output from a combination of quickly-varying
+#      sources and gzip.  Ignore non-varying gzip header, and extract
+#      "random" bits from there.
+#  - given those bits, map to file-name bytes using tr, and try to create
+#      the desired directory.
+#  - make only $MAX_TRIES_ attempts
+
+# Helper function.  Print $N pseudo-random bytes from a-zA-Z0-9.
+rand_bytes_ ()
+{
+  n_=$1
+
+  # Maybe try openssl rand -base64 $n_prime_|tr '+/=\012' abcd first?
+  # But if they have openssl, they probably have mktemp, too.
+
+  chars_=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
+  dev_rand_=/dev/urandom
+  if test -r "$dev_rand_"; then
+    # Note: 256-length($chars_) == 194; 3 copies of $chars_ is 186 + 8 = 194.
+    dd ibs=$n_ count=1 if=$dev_rand_ 2>/dev/null \
+      | LC_ALL=C tr -c $chars_ 01234567$chars_$chars_$chars_
+    return
+  fi
+
+  n_plus_50_=`expr $n_ + 50`
+  cmds_='date; date +%N; free; who -a; w; ps auxww; ps -ef'
+  data_=` (eval "$cmds_") 2>&1 | gzip `
+
+  # Ensure that $data_ has length at least 50+$n_
+  while :; do
+    len_=`echo "$data_"|wc -c`
+    test $n_plus_50_ -le $len_ && break;
+    data_=` (echo "$data_"; eval "$cmds_") 2>&1 | gzip `
+  done
+
+  echo "$data_" \
+    | dd bs=1 skip=50 count=$n_ 2>/dev/null \
+    | LC_ALL=C tr -c $chars_ 01234567$chars_$chars_$chars_
+}
+
+mktempd_ ()
+{
+  case $# in
+  2);;
+  *) fail_ "Usage: mktempd_ DIR TEMPLATE";;
+  esac
+
+  destdir_=$1
+  template_=$2
+
+  MAX_TRIES_=4
+
+  # Disallow any trailing slash on specified destdir:
+  # it would subvert the post-mktemp "case"-based destdir test.
+  case $destdir_ in
+  / | //) destdir_slash_=$destdir;;
+  */) fail_ "invalid destination dir: remove trailing slash(es)";;
+  *) destdir_slash_=$destdir_/;;
+  esac
+
+  case $template_ in
+  *XXXX) ;;
+  *) fail_ \
+       "invalid template: $template_ (must have a suffix of at least 4 X's)";;
+  esac
+
+  # First, try to use mktemp.
+  d=`unset TMPDIR; { mktemp -d -t -p "$destdir_" "$template_"; } 2>/dev/null` &&
+
+  # The resulting name must be in the specified directory.
+  case $d in "$destdir_slash_"*) :;; *) false;; esac &&
+
+  # It must have created the directory.
+  test -d "$d" &&
+
+  # It must have 0700 permissions.  Handle sticky "S" bits.
+  perms=`ls -dgo "$d" 2>/dev/null` &&
+  case $perms in drwx--[-S]---*) :;; *) false;; esac && {
+    echo "$d"
+    return
+  }
+
+  # If we reach this point, we'll have to create a directory manually.
+
+  # Get a copy of the template without its suffix of X's.
+  base_template_=`echo "$template_"|sed 's/XX*$//'`
+
+  # Calculate how many X's we've just removed.
+  template_length_=`echo "$template_" | wc -c`
+  nx_=`echo "$base_template_" | wc -c`
+  nx_=`expr $template_length_ - $nx_`
+
+  err_=
+  i_=1
+  while :; do
+    X_=`rand_bytes_ $nx_`
+    candidate_dir_="$destdir_slash_$base_template_$X_"
+    err_=`mkdir -m 0700 "$candidate_dir_" 2>&1` \
+      && { echo "$candidate_dir_"; return; }
+    test $MAX_TRIES_ -le $i_ && break;
+    i_=`expr $i_ + 1`
+  done
+  fail_ "$err_"
+}
+
+# =============================================================================
+# Core test framework
+
+# An arbitrary prefix to help distinguish test directories.
+testdir_prefix_ () { printf gt; }
+
+# Set up the environment for the test to run in.
+setup_ ()
+{
+  if test "$VERBOSE" = yes; then
+    # Test whether set -x may cause the selected shell to corrupt an
+    # application's stderr.  Many do, including zsh-4.3.10 and the /bin/sh
+    # from SunOS 5.11, OpenBSD 4.7 and Irix 5.x and 6.5.
+    # If enabling verbose output this way would cause trouble, simply
+    # issue a warning and refrain.
+    if $gl_set_x_corrupts_stderr_; then
+      warn_ "using SHELL=$SHELL with 'set -x' corrupts stderr"
+    else
+      set -x
+    fi
+  fi
+
+  initial_cwd_=$PWD
+
+  # Create and enter the temporary directory.
+  pfx_=`testdir_prefix_`
+  test_dir_=`mktempd_ "$initial_cwd_" "$pfx_-$ME_.XXXX"` \
+    || fail_ "failed to create temporary directory in $initial_cwd_"
+  cd "$test_dir_" || fail_ "failed to cd to temporary directory"
+  # Set variables srcdir, builddir, for the convenience of the test.
+  case $srcdir in
+    /* | ?:*) ;;
+    *) srcdir="../$srcdir" ;;
+  esac
+  builddir=".."
+  export srcdir builddir
+
+  # As autoconf-generated configure scripts do, ensure that IFS
+  # is defined initially, so that saving and restoring $IFS works.
+  gl_init_sh_nl_='
+'
+  IFS=" ""	$gl_init_sh_nl_"
+
+  # This trap statement, along with a trap on 0 below, ensure that the
+  # temporary directory, $test_dir_, is removed upon exit as well as
+  # upon receipt of any of the listed signals.
+  for sig_ in 1 2 3 13 15; do
+    eval "trap 'Exit $(expr $sig_ + 128)' $sig_"
+  done
+}
+
+# This is a stub function that is run upon trap (upon regular exit and
+# interrupt).  Override it with a per-test function, e.g., to unmount
+# a partition, or to undo any other global state changes.
+cleanup_ () { :; }
+
+# Run the user-overridable cleanup_ function, remove the temporary
+# directory and exit with the incoming value of $?.
+remove_tmp_ ()
+{
+  __st=$?
+  cleanup_
+  if test "$KEEP" = yes; then
+    echo "Not removing temporary directory $test_dir_"
+  else
+    # cd out of the directory we're about to remove
+    cd "$initial_cwd_" || cd / || cd /tmp
+    chmod -R u+rwx "$test_dir_"
+    # If removal fails and exit status was to be 0, then change it to 1.
+    rm -rf "$test_dir_" || { test $__st = 0 && __st=1; }
+  fi
+  exit $__st
+}
+
+# =============================================================================
+# Prepending directories to PATH
+
+# Given a directory name, DIR, if every entry in it that matches *.exe
+# contains only the specified bytes (see the case stmt below), then print
+# a space-separated list of those names and return 0.  Otherwise, don't
+# print anything and return 1.  Naming constraints apply also to DIR.
+find_exe_basenames_ ()
+{
+  feb_dir_=$1
+  feb_fail_=0
+  feb_result_=
+  feb_sp_=
+  for feb_file_ in $feb_dir_/*.exe; do
+    # If there was no *.exe file, or there existed a file named "*.exe" that
+    # was deleted between the above glob expansion and the existence test
+    # below, just skip it.
+    test "x$feb_file_" = "x$feb_dir_/*.exe" && test ! -f "$feb_file_" \
+      && continue
+    # Exempt [.exe, since we can't create a function by that name, yet
+    # we can't invoke [ by PATH search anyways due to shell builtins.
+    test "x$feb_file_" = "x$feb_dir_/[.exe" && continue
+    case $feb_file_ in
+      *[!-a-zA-Z/0-9_.+]*) feb_fail_=1; break;;
+      *) # Remove leading file name components as well as the .exe suffix.
+         feb_file_=${feb_file_##*/}
+         feb_file_=${feb_file_%.exe}
+         feb_result_="$feb_result_$feb_sp_$feb_file_";;
+    esac
+    feb_sp_=' '
+  done
+  test $feb_fail_ = 0 && printf %s "$feb_result_"
+  return $feb_fail_
+}
+
+# Consider the files in directory, $1.
+# For each file name of the form PROG.exe, create an alias named
+# PROG that simply invokes PROG.exe, then return 0.  If any selected
+# file name or the directory name, $1, contains an unexpected character,
+# define no alias and return 1.
+create_exe_shims_ ()
+{
+  case $EXEEXT in
+    '') return 0 ;;
+    .exe) ;;
+    *) echo "$0: unexpected \$EXEEXT value: $EXEEXT" 1>&2; return 1 ;;
+  esac
+
+  base_names_=`find_exe_basenames_ $1` \
+    || { echo "$0 (exe_shim): skipping directory: $1" 1>&2; return 0; }
+
+  if test -n "$base_names_"; then
+    for base_ in $base_names_; do
+      alias "$base_"="$base_$EXEEXT"
+    done
+  fi
+
+  return 0
+}
+
+# Use this function to prepend to PATH an absolute name for each
+# specified, possibly-$initial_cwd_-relative, directory.
+path_prepend_ ()
+{
+  while test $# != 0; do
+    path_dir_=$1
+    case $path_dir_ in
+      '') fail_ "invalid path dir: '$1'";;
+      /* | ?:*) abs_path_dir_=$path_dir_;;
+      *) abs_path_dir_=$initial_cwd_/$path_dir_;;
+    esac
+    case $abs_path_dir_ in
+      *$PATH_SEPARATOR*) fail_ "invalid path dir: '$abs_path_dir_'";;
+    esac
+    PATH="$abs_path_dir_$PATH_SEPARATOR$PATH"
+
+    # Create an alias, FOO, for each FOO.exe in this directory.
+    create_exe_shims_ "$abs_path_dir_" \
+      || fail_ "something failed (above): $abs_path_dir_"
+    shift
+  done
+  export PATH
+}
+
+# =============================================================================
+# Convenience environment variables for the tests
+
+# -----------------------------------------------------------------------------
+
+# Enable glibc's malloc-perturbing option.
+# This is useful for exposing code that depends on the fact that
+# malloc-related functions often return memory that is mostly zeroed.
+# If you have the time and cycles, use valgrind to do an even better job.
+: ${MALLOC_PERTURB_=87}
+export MALLOC_PERTURB_
+
+# -----------------------------------------------------------------------------
+
+# The interpreter for Bourne-shell scripts.
+# No special standards compatibility requirements.
+# Some environments, such as Android, don't have /bin/sh.
+if test -f /bin/sh$EXEEXT; then
+  BOURNE_SHELL=/bin/sh
+else
+  BOURNE_SHELL=sh
+fi
+
+# =============================================================================
+# Convenience functions for the tests
+
+# -----------------------------------------------------------------------------
+# Return value checking
+
+# This is used to simplify checking of the return value
+# which is useful when ensuring a command fails as desired.
+# I.e., just doing `command ... &&fail=1` will not catch
+# a segfault in command for example.  With this helper you
+# instead check an explicit exit code like
+#   returns_ 1 command ... || fail
+returns_ () {
+  # Disable tracing so it doesn't interfere with stderr of the wrapped command
+  { set +x; } 2>/dev/null
+
+  local exp_exit="$1"
+  shift
+  "$@"
+  test $? -eq $exp_exit && ret_=0 || ret_=1
+
+  if test "$VERBOSE" = yes && test "$gl_set_x_corrupts_stderr_" = false; then
+    set -x
+  fi
+  { return $ret_; } 2>/dev/null
+}
+
+# -----------------------------------------------------------------------------
+# Text file comparison
+
+# Emit a header similar to that from diff -u;  Print the simulated "diff"
+# command so that the order of arguments is clear.  Don't bother with @@ lines.
+emit_diff_u_header_ ()
+{
+  printf '%s\n' "diff -u $*" \
+    "--- $1	1970-01-01" \
+    "+++ $2	1970-01-01"
+}
+
+# Arrange not to let diff or cmp operate on /dev/null,
+# since on some systems (at least OSF/1 5.1), that doesn't work.
+# When there are not two arguments, or no argument is /dev/null, return 2.
+# When one argument is /dev/null and the other is not empty,
+# cat the nonempty file to stderr and return 1.
+# Otherwise, return 0.
+compare_dev_null_ ()
+{
+  test $# = 2 || return 2
+
+  if test "x$1" = x/dev/null; then
+    test -s "$2" || return 0
+    emit_diff_u_header_ "$@"; sed 's/^/+/' "$2"
+    return 1
+  fi
+
+  if test "x$2" = x/dev/null; then
+    test -s "$1" || return 0
+    emit_diff_u_header_ "$@"; sed 's/^/-/' "$1"
+    return 1
+  fi
+
+  return 2
+}
+
+for diff_opt_ in -u -U3 -c '' no; do
+  test "$diff_opt_" != no &&
+    diff_out_=`exec 2>/dev/null; diff $diff_opt_ "$0" "$0" < /dev/null` &&
+    break
+done
+if test "$diff_opt_" != no; then
+  if test -z "$diff_out_"; then
+    compare_ () { diff $diff_opt_ "$@"; }
+  else
+    compare_ ()
+    {
+      # If no differences were found, AIX and HP-UX 'diff' produce output
+      # like "No differences encountered".  Hide this output.
+      diff $diff_opt_ "$@" > diff.out
+      diff_status_=$?
+      test $diff_status_ -eq 0 || cat diff.out || diff_status_=2
+      rm -f diff.out || diff_status_=2
+      return $diff_status_
+    }
+  fi
+elif cmp -s /dev/null /dev/null 2>/dev/null; then
+  compare_ () { cmp -s "$@"; }
+else
+  compare_ () { cmp "$@"; }
+fi
+
+# Usage: compare EXPECTED ACTUAL
+#
+# Given compare_dev_null_'s preprocessing, defer to compare_ if 2 or more.
+# Otherwise, propagate $? to caller: any diffs have already been printed.
+compare ()
+{
+  # This looks like it can be factored to use a simple "case $?"
+  # after unchecked compare_dev_null_ invocation, but that would
+  # fail in a "set -e" environment.
+  if compare_dev_null_ "$@"; then
+    return 0
+  else
+    case $? in
+      1) return 1;;
+      *) compare_ "$@";;
+    esac
+  fi
+}
+
+# -----------------------------------------------------------------------------
+
+# If you want to override the testdir_prefix_ function,
+# or to add more utility functions, use this file.
+test -f "$srcdir/init.cfg" \
+  && . "$srcdir/init.cfg"
+
+# =============================================================================
+# Set up the environment for the test to run in.
+
+setup_ "$@"
+# This trap is here, rather than in the setup_ function, because some
+# shells run the exit trap at shell function exit, rather than script exit.
+trap remove_tmp_ 0
diff --git a/gnulib-tests/ioctl.c b/gnulib-tests/ioctl.c
new file mode 100644
index 0000000..eb2e825
--- /dev/null
+++ b/gnulib-tests/ioctl.c
@@ -0,0 +1,92 @@
+/* ioctl.c --- wrappers for Windows ioctl function
+
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#include <sys/ioctl.h>
+
+#include <stdarg.h>
+
+#if HAVE_IOCTL
+
+/* Provide a wrapper with the POSIX prototype.  */
+# undef ioctl
+int
+rpl_ioctl (int fd, int request, ... /* {void *,char *} arg */)
+{
+  void *buf;
+  va_list args;
+
+  va_start (args, request);
+  buf = va_arg (args, void *);
+  va_end (args);
+
+  /* Cast 'request' so that when the system's ioctl function takes a 64-bit
+     request argument, the value gets zero-extended, not sign-extended.  */
+  return ioctl (fd, (unsigned int) request, buf);
+}
+
+#else /* mingw */
+
+# include <errno.h>
+
+/* Get HANDLE.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+
+# include "fd-hook.h"
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+
+static int
+primary_ioctl (int fd, int request, void *arg)
+{
+  /* We don't support FIONBIO on pipes here.  If you want to make pipe
+     fds non-blocking, use the gnulib 'nonblocking' module, until
+     gnulib implements fcntl F_GETFL / F_SETFL with O_NONBLOCK.  */
+
+  if ((HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE)
+    errno = ENOSYS;
+  else
+    errno = EBADF;
+  return -1;
+}
+
+int
+ioctl (int fd, int request, ... /* {void *,char *} arg */)
+{
+  void *arg;
+  va_list args;
+
+  va_start (args, request);
+  arg = va_arg (args, void *);
+  va_end (args);
+
+# if WINDOWS_SOCKETS
+  return execute_all_ioctl_hooks (primary_ioctl, fd, request, arg);
+# else
+  return primary_ioctl (fd, request, arg);
+# endif
+}
+
+#endif
diff --git a/gnulib-tests/listen.c b/gnulib-tests/listen.c
new file mode 100644
index 0000000..c1db145
--- /dev/null
+++ b/gnulib-tests/listen.c
@@ -0,0 +1,49 @@
+/* listen.c --- wrappers for Windows listen function
+
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef listen
+
+int
+rpl_listen (int fd, int backlog)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      int r = listen (sock, backlog);
+      if (r < 0)
+        set_winsock_errno ();
+
+      return r;
+    }
+}
diff --git a/gnulib-tests/locale.c b/gnulib-tests/locale.c
new file mode 100644
index 0000000..323040c
--- /dev/null
+++ b/gnulib-tests/locale.c
@@ -0,0 +1,85 @@
+/* Program that prints the names of the categories of the current locale.
+   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+/* We want to use the system's setlocale() function here, not the gnulib
+   override.  */
+#undef setlocale
+
+/* Specification:
+   <https://pubs.opengroup.org/onlinepubs/9699919799/utilities/locale.html>
+   Here we implement only the invocation without any command-line options.  */
+
+static const char *
+defaulted_getenv (const char *variable)
+{
+  const char *value = getenv (variable);
+  return (value != NULL ? value : "");
+}
+
+static void
+print_category (int category, const char *variable)
+{
+  const char *value = defaulted_getenv (variable);
+  if (value[0] != '\0' && defaulted_getenv ("LC_ALL")[0] == '\0')
+    /* The variable is set in the environment and not overridden by LC_ALL.  */
+    printf ("%s=%s\n", variable, value);
+  else
+    printf ("%s=\"%s\"\n", variable, setlocale (category, NULL));
+}
+
+int
+main ()
+{
+  setlocale (LC_ALL, "");
+
+  printf ("LANG=%s\n", defaulted_getenv ("LANG"));
+  print_category (LC_CTYPE, "LC_CTYPE");
+  print_category (LC_NUMERIC, "LC_NUMERIC");
+  print_category (LC_TIME, "LC_TIME");
+  print_category (LC_COLLATE, "LC_COLLATE");
+  print_category (LC_MONETARY, "LC_MONETARY");
+  print_category (LC_MESSAGES, "LC_MESSAGES");
+#ifdef LC_PAPER
+  print_category (LC_PAPER, "LC_PAPER");
+#endif
+#ifdef LC_NAME
+  print_category (LC_NAME, "LC_NAME");
+#endif
+#ifdef LC_ADDRESS
+  print_category (LC_ADDRESS, "LC_ADDRESS");
+#endif
+#ifdef LC_TELEPHONE
+  print_category (LC_TELEPHONE, "LC_TELEPHONE");
+#endif
+#ifdef LC_MEASUREMENT
+  print_category (LC_MEASUREMENT, "LC_MEASUREMENT");
+#endif
+#ifdef LC_IDENTIFICATION
+  print_category (LC_IDENTIFICATION, "LC_IDENTIFICATION");
+#endif
+
+  printf ("LC_ALL=%s\n", defaulted_getenv ("LC_ALL"));
+
+  return 0;
+}
diff --git a/gnulib-tests/localename-table.c b/gnulib-tests/localename-table.c
new file mode 100644
index 0000000..89db245
--- /dev/null
+++ b/gnulib-tests/localename-table.c
@@ -0,0 +1,48 @@
+/* Table that maps a locale object to the names of the locale categories.
+   Copyright (C) 2018-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2018.  */
+
+#include <config.h>
+
+#if HAVE_WORKING_USELOCALE && HAVE_NAMELESS_LOCALES
+
+/* Specification.  */
+#include "localename-table.h"
+
+#include <stdint.h>
+
+/* A hash function for pointers.  */
+size_t _GL_ATTRIBUTE_CONST
+locale_hash_function (locale_t x)
+{
+  uintptr_t p = (uintptr_t) x;
+  size_t h = ((p % 4177) << 12) + ((p % 79) << 6) + (p % 61);
+  return h;
+}
+
+struct locale_hash_node * locale_hash_table[LOCALE_HASH_TABLE_SIZE]
+  /* = { NULL, ..., NULL } */;
+
+gl_rwlock_define_initialized(, locale_lock)
+
+#else
+
+/* This declaration is solely to ensure that after preprocessing
+   this file is never empty.  */
+typedef int dummy;
+
+#endif
diff --git a/gnulib-tests/localename-table.h b/gnulib-tests/localename-table.h
new file mode 100644
index 0000000..d9b8128
--- /dev/null
+++ b/gnulib-tests/localename-table.h
@@ -0,0 +1,73 @@
+/* Table that maps a locale object to the names of the locale categories.
+   Copyright (C) 2018-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2018.  */
+
+#if HAVE_WORKING_USELOCALE && HAVE_NAMELESS_LOCALES
+
+# include <stddef.h>
+# include <locale.h>
+
+# ifdef IN_LIBINTL
+#  include "lock.h"
+# else
+#  include "glthread/lock.h"
+# endif
+
+struct locale_categories_names
+  {
+    /* Locale category -> name (allocated with indefinite extent).  */
+    const char *category_name[6];
+  };
+
+/* A hash table of fixed size.  Multiple threads can access it read-only
+   simultaneously, but only one thread can insert into it or remove from it
+   at the same time.
+   This hash table has global scope, so that when an application uses both
+   GNU libintl and gnulib, the application sees only one hash table.  (When
+   linking statically with libintl, the fact that localename-table.c is a
+   separate compilation unit resolves the duplicate symbol conflict.  When
+   linking with libintl as a shared library, we rely on ELF and the symbol
+   conflict resolution implemented in the ELF dynamic loader here.)
+   Both the libintl overrides and the gnulib overrides of the functions
+   newlocale, duplocale, freelocale see the same hash table (and the same lock).
+   For this reason, the internal layout of the hash table and the hash function
+   MUST NEVER CHANGE.  If you need to change the internal layout or the hash
+   function, introduce versioning by appending a version suffix to the symbols
+   at the linker level.  */
+# define locale_hash_function libintl_locale_hash_function
+# define locale_hash_table libintl_locale_hash_table
+# define locale_lock libintl_locale_lock
+
+extern size_t _GL_ATTRIBUTE_CONST locale_hash_function (locale_t x);
+
+/* A node in a hash bucket collision list.  */
+struct locale_hash_node
+  {
+    struct locale_hash_node *next;
+    locale_t locale;
+    struct locale_categories_names names;
+  };
+
+# define LOCALE_HASH_TABLE_SIZE 101
+extern struct locale_hash_node * locale_hash_table[LOCALE_HASH_TABLE_SIZE];
+
+/* This lock protects the locale_hash_table against multiple simultaneous
+   accesses (except that multiple simultaneous read accesses are allowed).  */
+
+gl_rwlock_define(extern, locale_lock)
+
+#endif
diff --git a/gnulib-tests/localename.c b/gnulib-tests/localename.c
new file mode 100644
index 0000000..20be646
--- /dev/null
+++ b/gnulib-tests/localename.c
@@ -0,0 +1,3460 @@
+/* Determine name of the currently selected locale.
+   Copyright (C) 1995-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Ulrich Drepper <drepper@gnu.org>, 1995.  */
+/* Native Windows code written by Tor Lillqvist <tml@iki.fi>.  */
+/* Mac OS X code written by Bruno Haible <bruno@clisp.org>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#ifdef IN_LIBINTL
+# include "gettextP.h"
+#else
+# include "localename.h"
+#endif
+
+#include <limits.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <locale.h>
+#include <string.h>
+
+#include "flexmember.h"
+#include "setlocale_null.h"
+
+/* We cannot support uselocale() on platforms where the locale_t type is fake.
+   See intl-thread-locale.m4 for details.  */
+#if HAVE_WORKING_USELOCALE && !HAVE_FAKE_LOCALES
+# define HAVE_GOOD_USELOCALE 1
+#endif
+
+#if HAVE_GOOD_USELOCALE
+/* Mac OS X 10.5 defines the locale_t type in <xlocale.h>.  */
+# if defined __APPLE__ && defined __MACH__
+#  include <xlocale.h>
+# endif
+# if (__GLIBC__ >= 2 && !defined __UCLIBC__) || (defined __linux__ && HAVE_LANGINFO_H) || defined __CYGWIN__
+#  include <langinfo.h>
+# endif
+# if !defined IN_LIBINTL
+#  include "glthread/lock.h"
+# endif
+# if defined __sun
+#  if HAVE_GETLOCALENAME_L
+/* Solaris >= 12.  */
+extern char * getlocalename_l(int, locale_t);
+#  elif HAVE_SOLARIS114_LOCALES
+#   include <sys/localedef.h>
+#  endif
+# endif
+# if HAVE_NAMELESS_LOCALES
+#  include <errno.h>
+#  include "localename-table.h"
+# endif
+#endif
+
+#if HAVE_CFPREFERENCESCOPYAPPVALUE
+# include <CoreFoundation/CFString.h>
+# include <CoreFoundation/CFPreferences.h>
+#endif
+
+#if defined _WIN32 && !defined __CYGWIN__
+# define WINDOWS_NATIVE
+# if !defined IN_LIBINTL
+#  include "glthread/lock.h"
+# endif
+#endif
+
+#if defined WINDOWS_NATIVE || defined __CYGWIN__ /* Native Windows or Cygwin */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+# include <winnls.h>
+/* List of language codes, sorted by value:
+   0x01 LANG_ARABIC
+   0x02 LANG_BULGARIAN
+   0x03 LANG_CATALAN
+   0x04 LANG_CHINESE
+   0x05 LANG_CZECH
+   0x06 LANG_DANISH
+   0x07 LANG_GERMAN
+   0x08 LANG_GREEK
+   0x09 LANG_ENGLISH
+   0x0a LANG_SPANISH
+   0x0b LANG_FINNISH
+   0x0c LANG_FRENCH
+   0x0d LANG_HEBREW
+   0x0e LANG_HUNGARIAN
+   0x0f LANG_ICELANDIC
+   0x10 LANG_ITALIAN
+   0x11 LANG_JAPANESE
+   0x12 LANG_KOREAN
+   0x13 LANG_DUTCH
+   0x14 LANG_NORWEGIAN
+   0x15 LANG_POLISH
+   0x16 LANG_PORTUGUESE
+   0x17 LANG_ROMANSH
+   0x18 LANG_ROMANIAN
+   0x19 LANG_RUSSIAN
+   0x1a LANG_CROATIAN == LANG_SERBIAN
+   0x1b LANG_SLOVAK
+   0x1c LANG_ALBANIAN
+   0x1d LANG_SWEDISH
+   0x1e LANG_THAI
+   0x1f LANG_TURKISH
+   0x20 LANG_URDU
+   0x21 LANG_INDONESIAN
+   0x22 LANG_UKRAINIAN
+   0x23 LANG_BELARUSIAN
+   0x24 LANG_SLOVENIAN
+   0x25 LANG_ESTONIAN
+   0x26 LANG_LATVIAN
+   0x27 LANG_LITHUANIAN
+   0x28 LANG_TAJIK
+   0x29 LANG_FARSI
+   0x2a LANG_VIETNAMESE
+   0x2b LANG_ARMENIAN
+   0x2c LANG_AZERI
+   0x2d LANG_BASQUE
+   0x2e LANG_SORBIAN
+   0x2f LANG_MACEDONIAN
+   0x30 LANG_SUTU
+   0x31 LANG_TSONGA
+   0x32 LANG_TSWANA
+   0x33 LANG_VENDA
+   0x34 LANG_XHOSA
+   0x35 LANG_ZULU
+   0x36 LANG_AFRIKAANS
+   0x37 LANG_GEORGIAN
+   0x38 LANG_FAEROESE
+   0x39 LANG_HINDI
+   0x3a LANG_MALTESE
+   0x3b LANG_SAMI
+   0x3c LANG_GAELIC
+   0x3d LANG_YIDDISH
+   0x3e LANG_MALAY
+   0x3f LANG_KAZAK
+   0x40 LANG_KYRGYZ
+   0x41 LANG_SWAHILI
+   0x42 LANG_TURKMEN
+   0x43 LANG_UZBEK
+   0x44 LANG_TATAR
+   0x45 LANG_BENGALI
+   0x46 LANG_PUNJABI
+   0x47 LANG_GUJARATI
+   0x48 LANG_ORIYA
+   0x49 LANG_TAMIL
+   0x4a LANG_TELUGU
+   0x4b LANG_KANNADA
+   0x4c LANG_MALAYALAM
+   0x4d LANG_ASSAMESE
+   0x4e LANG_MARATHI
+   0x4f LANG_SANSKRIT
+   0x50 LANG_MONGOLIAN
+   0x51 LANG_TIBETAN
+   0x52 LANG_WELSH
+   0x53 LANG_CAMBODIAN
+   0x54 LANG_LAO
+   0x55 LANG_BURMESE
+   0x56 LANG_GALICIAN
+   0x57 LANG_KONKANI
+   0x58 LANG_MANIPURI
+   0x59 LANG_SINDHI
+   0x5a LANG_SYRIAC
+   0x5b LANG_SINHALESE
+   0x5c LANG_CHEROKEE
+   0x5d LANG_INUKTITUT
+   0x5e LANG_AMHARIC
+   0x5f LANG_TAMAZIGHT
+   0x60 LANG_KASHMIRI
+   0x61 LANG_NEPALI
+   0x62 LANG_FRISIAN
+   0x63 LANG_PASHTO
+   0x64 LANG_TAGALOG
+   0x65 LANG_DIVEHI
+   0x66 LANG_EDO
+   0x67 LANG_FULFULDE
+   0x68 LANG_HAUSA
+   0x69 LANG_IBIBIO
+   0x6a LANG_YORUBA
+   0x6d LANG_BASHKIR
+   0x6e LANG_LUXEMBOURGISH
+   0x6f LANG_GREENLANDIC
+   0x70 LANG_IGBO
+   0x71 LANG_KANURI
+   0x72 LANG_OROMO
+   0x73 LANG_TIGRINYA
+   0x74 LANG_GUARANI
+   0x75 LANG_HAWAIIAN
+   0x76 LANG_LATIN
+   0x77 LANG_SOMALI
+   0x78 LANG_YI
+   0x79 LANG_PAPIAMENTU
+   0x7a LANG_MAPUDUNGUN
+   0x7c LANG_MOHAWK
+   0x7e LANG_BRETON
+   0x82 LANG_OCCITAN
+   0x83 LANG_CORSICAN
+   0x84 LANG_ALSATIAN
+   0x85 LANG_YAKUT
+   0x86 LANG_KICHE
+   0x87 LANG_KINYARWANDA
+   0x88 LANG_WOLOF
+   0x8c LANG_DARI
+   0x91 LANG_SCOTTISH_GAELIC
+*/
+/* Mingw headers don't have latest language and sublanguage codes.  */
+# ifndef LANG_AFRIKAANS
+# define LANG_AFRIKAANS 0x36
+# endif
+# ifndef LANG_ALBANIAN
+# define LANG_ALBANIAN 0x1c
+# endif
+# ifndef LANG_ALSATIAN
+# define LANG_ALSATIAN 0x84
+# endif
+# ifndef LANG_AMHARIC
+# define LANG_AMHARIC 0x5e
+# endif
+# ifndef LANG_ARABIC
+# define LANG_ARABIC 0x01
+# endif
+# ifndef LANG_ARMENIAN
+# define LANG_ARMENIAN 0x2b
+# endif
+# ifndef LANG_ASSAMESE
+# define LANG_ASSAMESE 0x4d
+# endif
+# ifndef LANG_AZERI
+# define LANG_AZERI 0x2c
+# endif
+# ifndef LANG_BASHKIR
+# define LANG_BASHKIR 0x6d
+# endif
+# ifndef LANG_BASQUE
+# define LANG_BASQUE 0x2d
+# endif
+# ifndef LANG_BELARUSIAN
+# define LANG_BELARUSIAN 0x23
+# endif
+# ifndef LANG_BENGALI
+# define LANG_BENGALI 0x45
+# endif
+# ifndef LANG_BRETON
+# define LANG_BRETON 0x7e
+# endif
+# ifndef LANG_BURMESE
+# define LANG_BURMESE 0x55
+# endif
+# ifndef LANG_CAMBODIAN
+# define LANG_CAMBODIAN 0x53
+# endif
+# ifndef LANG_CATALAN
+# define LANG_CATALAN 0x03
+# endif
+# ifndef LANG_CHEROKEE
+# define LANG_CHEROKEE 0x5c
+# endif
+# ifndef LANG_CORSICAN
+# define LANG_CORSICAN 0x83
+# endif
+# ifndef LANG_DARI
+# define LANG_DARI 0x8c
+# endif
+# ifndef LANG_DIVEHI
+# define LANG_DIVEHI 0x65
+# endif
+# ifndef LANG_EDO
+# define LANG_EDO 0x66
+# endif
+# ifndef LANG_ESTONIAN
+# define LANG_ESTONIAN 0x25
+# endif
+# ifndef LANG_FAEROESE
+# define LANG_FAEROESE 0x38
+# endif
+# ifndef LANG_FARSI
+# define LANG_FARSI 0x29
+# endif
+# ifndef LANG_FRISIAN
+# define LANG_FRISIAN 0x62
+# endif
+# ifndef LANG_FULFULDE
+# define LANG_FULFULDE 0x67
+# endif
+# ifndef LANG_GAELIC
+# define LANG_GAELIC 0x3c
+# endif
+# ifndef LANG_GALICIAN
+# define LANG_GALICIAN 0x56
+# endif
+# ifndef LANG_GEORGIAN
+# define LANG_GEORGIAN 0x37
+# endif
+# ifndef LANG_GREENLANDIC
+# define LANG_GREENLANDIC 0x6f
+# endif
+# ifndef LANG_GUARANI
+# define LANG_GUARANI 0x74
+# endif
+# ifndef LANG_GUJARATI
+# define LANG_GUJARATI 0x47
+# endif
+# ifndef LANG_HAUSA
+# define LANG_HAUSA 0x68
+# endif
+# ifndef LANG_HAWAIIAN
+# define LANG_HAWAIIAN 0x75
+# endif
+# ifndef LANG_HEBREW
+# define LANG_HEBREW 0x0d
+# endif
+# ifndef LANG_HINDI
+# define LANG_HINDI 0x39
+# endif
+# ifndef LANG_IBIBIO
+# define LANG_IBIBIO 0x69
+# endif
+# ifndef LANG_IGBO
+# define LANG_IGBO 0x70
+# endif
+# ifndef LANG_INDONESIAN
+# define LANG_INDONESIAN 0x21
+# endif
+# ifndef LANG_INUKTITUT
+# define LANG_INUKTITUT 0x5d
+# endif
+# ifndef LANG_KANNADA
+# define LANG_KANNADA 0x4b
+# endif
+# ifndef LANG_KANURI
+# define LANG_KANURI 0x71
+# endif
+# ifndef LANG_KASHMIRI
+# define LANG_KASHMIRI 0x60
+# endif
+# ifndef LANG_KAZAK
+# define LANG_KAZAK 0x3f
+# endif
+# ifndef LANG_KICHE
+# define LANG_KICHE 0x86
+# endif
+# ifndef LANG_KINYARWANDA
+# define LANG_KINYARWANDA 0x87
+# endif
+# ifndef LANG_KONKANI
+# define LANG_KONKANI 0x57
+# endif
+# ifndef LANG_KYRGYZ
+# define LANG_KYRGYZ 0x40
+# endif
+# ifndef LANG_LAO
+# define LANG_LAO 0x54
+# endif
+# ifndef LANG_LATIN
+# define LANG_LATIN 0x76
+# endif
+# ifndef LANG_LATVIAN
+# define LANG_LATVIAN 0x26
+# endif
+# ifndef LANG_LITHUANIAN
+# define LANG_LITHUANIAN 0x27
+# endif
+# ifndef LANG_LUXEMBOURGISH
+# define LANG_LUXEMBOURGISH 0x6e
+# endif
+# ifndef LANG_MACEDONIAN
+# define LANG_MACEDONIAN 0x2f
+# endif
+# ifndef LANG_MALAY
+# define LANG_MALAY 0x3e
+# endif
+# ifndef LANG_MALAYALAM
+# define LANG_MALAYALAM 0x4c
+# endif
+# ifndef LANG_MALTESE
+# define LANG_MALTESE 0x3a
+# endif
+# ifndef LANG_MANIPURI
+# define LANG_MANIPURI 0x58
+# endif
+# ifndef LANG_MAORI
+# define LANG_MAORI 0x81
+# endif
+# ifndef LANG_MAPUDUNGUN
+# define LANG_MAPUDUNGUN 0x7a
+# endif
+# ifndef LANG_MARATHI
+# define LANG_MARATHI 0x4e
+# endif
+# ifndef LANG_MOHAWK
+# define LANG_MOHAWK 0x7c
+# endif
+# ifndef LANG_MONGOLIAN
+# define LANG_MONGOLIAN 0x50
+# endif
+# ifndef LANG_NEPALI
+# define LANG_NEPALI 0x61
+# endif
+# ifndef LANG_OCCITAN
+# define LANG_OCCITAN 0x82
+# endif
+# ifndef LANG_ORIYA
+# define LANG_ORIYA 0x48
+# endif
+# ifndef LANG_OROMO
+# define LANG_OROMO 0x72
+# endif
+# ifndef LANG_PAPIAMENTU
+# define LANG_PAPIAMENTU 0x79
+# endif
+# ifndef LANG_PASHTO
+# define LANG_PASHTO 0x63
+# endif
+# ifndef LANG_PUNJABI
+# define LANG_PUNJABI 0x46
+# endif
+# ifndef LANG_QUECHUA
+# define LANG_QUECHUA 0x6b
+# endif
+# ifndef LANG_ROMANSH
+# define LANG_ROMANSH 0x17
+# endif
+# ifndef LANG_SAMI
+# define LANG_SAMI 0x3b
+# endif
+# ifndef LANG_SANSKRIT
+# define LANG_SANSKRIT 0x4f
+# endif
+# ifndef LANG_SCOTTISH_GAELIC
+# define LANG_SCOTTISH_GAELIC 0x91
+# endif
+# ifndef LANG_SERBIAN
+# define LANG_SERBIAN 0x1a
+# endif
+# ifndef LANG_SINDHI
+# define LANG_SINDHI 0x59
+# endif
+# ifndef LANG_SINHALESE
+# define LANG_SINHALESE 0x5b
+# endif
+# ifndef LANG_SLOVAK
+# define LANG_SLOVAK 0x1b
+# endif
+# ifndef LANG_SOMALI
+# define LANG_SOMALI 0x77
+# endif
+# ifndef LANG_SORBIAN
+# define LANG_SORBIAN 0x2e
+# endif
+# ifndef LANG_SOTHO
+# define LANG_SOTHO 0x6c
+# endif
+# ifndef LANG_SUTU
+# define LANG_SUTU 0x30
+# endif
+# ifndef LANG_SWAHILI
+# define LANG_SWAHILI 0x41
+# endif
+# ifndef LANG_SYRIAC
+# define LANG_SYRIAC 0x5a
+# endif
+# ifndef LANG_TAGALOG
+# define LANG_TAGALOG 0x64
+# endif
+# ifndef LANG_TAJIK
+# define LANG_TAJIK 0x28
+# endif
+# ifndef LANG_TAMAZIGHT
+# define LANG_TAMAZIGHT 0x5f
+# endif
+# ifndef LANG_TAMIL
+# define LANG_TAMIL 0x49
+# endif
+# ifndef LANG_TATAR
+# define LANG_TATAR 0x44
+# endif
+# ifndef LANG_TELUGU
+# define LANG_TELUGU 0x4a
+# endif
+# ifndef LANG_THAI
+# define LANG_THAI 0x1e
+# endif
+# ifndef LANG_TIBETAN
+# define LANG_TIBETAN 0x51
+# endif
+# ifndef LANG_TIGRINYA
+# define LANG_TIGRINYA 0x73
+# endif
+# ifndef LANG_TSONGA
+# define LANG_TSONGA 0x31
+# endif
+# ifndef LANG_TSWANA
+# define LANG_TSWANA 0x32
+# endif
+# ifndef LANG_TURKMEN
+# define LANG_TURKMEN 0x42
+# endif
+# ifndef LANG_UIGHUR
+# define LANG_UIGHUR 0x80
+# endif
+# ifndef LANG_UKRAINIAN
+# define LANG_UKRAINIAN 0x22
+# endif
+# ifndef LANG_URDU
+# define LANG_URDU 0x20
+# endif
+# ifndef LANG_UZBEK
+# define LANG_UZBEK 0x43
+# endif
+# ifndef LANG_VENDA
+# define LANG_VENDA 0x33
+# endif
+# ifndef LANG_VIETNAMESE
+# define LANG_VIETNAMESE 0x2a
+# endif
+# ifndef LANG_WELSH
+# define LANG_WELSH 0x52
+# endif
+# ifndef LANG_WOLOF
+# define LANG_WOLOF 0x88
+# endif
+# ifndef LANG_XHOSA
+# define LANG_XHOSA 0x34
+# endif
+# ifndef LANG_YAKUT
+# define LANG_YAKUT 0x85
+# endif
+# ifndef LANG_YI
+# define LANG_YI 0x78
+# endif
+# ifndef LANG_YIDDISH
+# define LANG_YIDDISH 0x3d
+# endif
+# ifndef LANG_YORUBA
+# define LANG_YORUBA 0x6a
+# endif
+# ifndef LANG_ZULU
+# define LANG_ZULU 0x35
+# endif
+# ifndef SUBLANG_AFRIKAANS_SOUTH_AFRICA
+# define SUBLANG_AFRIKAANS_SOUTH_AFRICA 0x01
+# endif
+# ifndef SUBLANG_ALBANIAN_ALBANIA
+# define SUBLANG_ALBANIAN_ALBANIA 0x01
+# endif
+# ifndef SUBLANG_ALSATIAN_FRANCE
+# define SUBLANG_ALSATIAN_FRANCE 0x01
+# endif
+# ifndef SUBLANG_AMHARIC_ETHIOPIA
+# define SUBLANG_AMHARIC_ETHIOPIA 0x01
+# endif
+# ifndef SUBLANG_ARABIC_SAUDI_ARABIA
+# define SUBLANG_ARABIC_SAUDI_ARABIA 0x01
+# endif
+# ifndef SUBLANG_ARABIC_IRAQ
+# define SUBLANG_ARABIC_IRAQ 0x02
+# endif
+# ifndef SUBLANG_ARABIC_EGYPT
+# define SUBLANG_ARABIC_EGYPT 0x03
+# endif
+# ifndef SUBLANG_ARABIC_LIBYA
+# define SUBLANG_ARABIC_LIBYA 0x04
+# endif
+# ifndef SUBLANG_ARABIC_ALGERIA
+# define SUBLANG_ARABIC_ALGERIA 0x05
+# endif
+# ifndef SUBLANG_ARABIC_MOROCCO
+# define SUBLANG_ARABIC_MOROCCO 0x06
+# endif
+# ifndef SUBLANG_ARABIC_TUNISIA
+# define SUBLANG_ARABIC_TUNISIA 0x07
+# endif
+# ifndef SUBLANG_ARABIC_OMAN
+# define SUBLANG_ARABIC_OMAN 0x08
+# endif
+# ifndef SUBLANG_ARABIC_YEMEN
+# define SUBLANG_ARABIC_YEMEN 0x09
+# endif
+# ifndef SUBLANG_ARABIC_SYRIA
+# define SUBLANG_ARABIC_SYRIA 0x0a
+# endif
+# ifndef SUBLANG_ARABIC_JORDAN
+# define SUBLANG_ARABIC_JORDAN 0x0b
+# endif
+# ifndef SUBLANG_ARABIC_LEBANON
+# define SUBLANG_ARABIC_LEBANON 0x0c
+# endif
+# ifndef SUBLANG_ARABIC_KUWAIT
+# define SUBLANG_ARABIC_KUWAIT 0x0d
+# endif
+# ifndef SUBLANG_ARABIC_UAE
+# define SUBLANG_ARABIC_UAE 0x0e
+# endif
+# ifndef SUBLANG_ARABIC_BAHRAIN
+# define SUBLANG_ARABIC_BAHRAIN 0x0f
+# endif
+# ifndef SUBLANG_ARABIC_QATAR
+# define SUBLANG_ARABIC_QATAR 0x10
+# endif
+# ifndef SUBLANG_ARMENIAN_ARMENIA
+# define SUBLANG_ARMENIAN_ARMENIA 0x01
+# endif
+# ifndef SUBLANG_ASSAMESE_INDIA
+# define SUBLANG_ASSAMESE_INDIA 0x01
+# endif
+# ifndef SUBLANG_AZERI_LATIN
+# define SUBLANG_AZERI_LATIN 0x01
+# endif
+# ifndef SUBLANG_AZERI_CYRILLIC
+# define SUBLANG_AZERI_CYRILLIC 0x02
+# endif
+# ifndef SUBLANG_BASHKIR_RUSSIA
+# define SUBLANG_BASHKIR_RUSSIA 0x01
+# endif
+# ifndef SUBLANG_BASQUE_BASQUE
+# define SUBLANG_BASQUE_BASQUE 0x01
+# endif
+# ifndef SUBLANG_BELARUSIAN_BELARUS
+# define SUBLANG_BELARUSIAN_BELARUS 0x01
+# endif
+# ifndef SUBLANG_BENGALI_INDIA
+# define SUBLANG_BENGALI_INDIA 0x01
+# endif
+# ifndef SUBLANG_BENGALI_BANGLADESH
+# define SUBLANG_BENGALI_BANGLADESH 0x02
+# endif
+# ifndef SUBLANG_BOSNIAN_BOSNIA_HERZEGOVINA_LATIN
+# define SUBLANG_BOSNIAN_BOSNIA_HERZEGOVINA_LATIN 0x05
+# endif
+# ifndef SUBLANG_BOSNIAN_BOSNIA_HERZEGOVINA_CYRILLIC
+# define SUBLANG_BOSNIAN_BOSNIA_HERZEGOVINA_CYRILLIC 0x08
+# endif
+# ifndef SUBLANG_BRETON_FRANCE
+# define SUBLANG_BRETON_FRANCE 0x01
+# endif
+# ifndef SUBLANG_BULGARIAN_BULGARIA
+# define SUBLANG_BULGARIAN_BULGARIA 0x01
+# endif
+# ifndef SUBLANG_CAMBODIAN_CAMBODIA
+# define SUBLANG_CAMBODIAN_CAMBODIA 0x01
+# endif
+# ifndef SUBLANG_CATALAN_SPAIN
+# define SUBLANG_CATALAN_SPAIN 0x01
+# endif
+# ifndef SUBLANG_CORSICAN_FRANCE
+# define SUBLANG_CORSICAN_FRANCE 0x01
+# endif
+# ifndef SUBLANG_CROATIAN_CROATIA
+# define SUBLANG_CROATIAN_CROATIA 0x01
+# endif
+# ifndef SUBLANG_CROATIAN_BOSNIA_HERZEGOVINA_LATIN
+# define SUBLANG_CROATIAN_BOSNIA_HERZEGOVINA_LATIN 0x04
+# endif
+# ifndef SUBLANG_CHINESE_MACAU
+# define SUBLANG_CHINESE_MACAU 0x05
+# endif
+# ifndef SUBLANG_CZECH_CZECH_REPUBLIC
+# define SUBLANG_CZECH_CZECH_REPUBLIC 0x01
+# endif
+# ifndef SUBLANG_DANISH_DENMARK
+# define SUBLANG_DANISH_DENMARK 0x01
+# endif
+# ifndef SUBLANG_DARI_AFGHANISTAN
+# define SUBLANG_DARI_AFGHANISTAN 0x01
+# endif
+# ifndef SUBLANG_DIVEHI_MALDIVES
+# define SUBLANG_DIVEHI_MALDIVES 0x01
+# endif
+# ifndef SUBLANG_DUTCH_SURINAM
+# define SUBLANG_DUTCH_SURINAM 0x03
+# endif
+# ifndef SUBLANG_ENGLISH_SOUTH_AFRICA
+# define SUBLANG_ENGLISH_SOUTH_AFRICA 0x07
+# endif
+# ifndef SUBLANG_ENGLISH_JAMAICA
+# define SUBLANG_ENGLISH_JAMAICA 0x08
+# endif
+# ifndef SUBLANG_ENGLISH_CARIBBEAN
+# define SUBLANG_ENGLISH_CARIBBEAN 0x09
+# endif
+# ifndef SUBLANG_ENGLISH_BELIZE
+# define SUBLANG_ENGLISH_BELIZE 0x0a
+# endif
+# ifndef SUBLANG_ENGLISH_TRINIDAD
+# define SUBLANG_ENGLISH_TRINIDAD 0x0b
+# endif
+# ifndef SUBLANG_ENGLISH_ZIMBABWE
+# define SUBLANG_ENGLISH_ZIMBABWE 0x0c
+# endif
+# ifndef SUBLANG_ENGLISH_PHILIPPINES
+# define SUBLANG_ENGLISH_PHILIPPINES 0x0d
+# endif
+# ifndef SUBLANG_ENGLISH_INDONESIA
+# define SUBLANG_ENGLISH_INDONESIA 0x0e
+# endif
+# ifndef SUBLANG_ENGLISH_HONGKONG
+# define SUBLANG_ENGLISH_HONGKONG 0x0f
+# endif
+# ifndef SUBLANG_ENGLISH_INDIA
+# define SUBLANG_ENGLISH_INDIA 0x10
+# endif
+# ifndef SUBLANG_ENGLISH_MALAYSIA
+# define SUBLANG_ENGLISH_MALAYSIA 0x11
+# endif
+# ifndef SUBLANG_ENGLISH_SINGAPORE
+# define SUBLANG_ENGLISH_SINGAPORE 0x12
+# endif
+# ifndef SUBLANG_ESTONIAN_ESTONIA
+# define SUBLANG_ESTONIAN_ESTONIA 0x01
+# endif
+# ifndef SUBLANG_FAEROESE_FAROE_ISLANDS
+# define SUBLANG_FAEROESE_FAROE_ISLANDS 0x01
+# endif
+# ifndef SUBLANG_FARSI_IRAN
+# define SUBLANG_FARSI_IRAN 0x01
+# endif
+# ifndef SUBLANG_FINNISH_FINLAND
+# define SUBLANG_FINNISH_FINLAND 0x01
+# endif
+# ifndef SUBLANG_FRENCH_LUXEMBOURG
+# define SUBLANG_FRENCH_LUXEMBOURG 0x05
+# endif
+# ifndef SUBLANG_FRENCH_MONACO
+# define SUBLANG_FRENCH_MONACO 0x06
+# endif
+# ifndef SUBLANG_FRENCH_WESTINDIES
+# define SUBLANG_FRENCH_WESTINDIES 0x07
+# endif
+# ifndef SUBLANG_FRENCH_REUNION
+# define SUBLANG_FRENCH_REUNION 0x08
+# endif
+# ifndef SUBLANG_FRENCH_CONGO
+# define SUBLANG_FRENCH_CONGO 0x09
+# endif
+# ifndef SUBLANG_FRENCH_SENEGAL
+# define SUBLANG_FRENCH_SENEGAL 0x0a
+# endif
+# ifndef SUBLANG_FRENCH_CAMEROON
+# define SUBLANG_FRENCH_CAMEROON 0x0b
+# endif
+# ifndef SUBLANG_FRENCH_COTEDIVOIRE
+# define SUBLANG_FRENCH_COTEDIVOIRE 0x0c
+# endif
+# ifndef SUBLANG_FRENCH_MALI
+# define SUBLANG_FRENCH_MALI 0x0d
+# endif
+# ifndef SUBLANG_FRENCH_MOROCCO
+# define SUBLANG_FRENCH_MOROCCO 0x0e
+# endif
+# ifndef SUBLANG_FRENCH_HAITI
+# define SUBLANG_FRENCH_HAITI 0x0f
+# endif
+# ifndef SUBLANG_FRISIAN_NETHERLANDS
+# define SUBLANG_FRISIAN_NETHERLANDS 0x01
+# endif
+# ifndef SUBLANG_GALICIAN_SPAIN
+# define SUBLANG_GALICIAN_SPAIN 0x01
+# endif
+# ifndef SUBLANG_GEORGIAN_GEORGIA
+# define SUBLANG_GEORGIAN_GEORGIA 0x01
+# endif
+# ifndef SUBLANG_GERMAN_LUXEMBOURG
+# define SUBLANG_GERMAN_LUXEMBOURG 0x04
+# endif
+# ifndef SUBLANG_GERMAN_LIECHTENSTEIN
+# define SUBLANG_GERMAN_LIECHTENSTEIN 0x05
+# endif
+# ifndef SUBLANG_GREEK_GREECE
+# define SUBLANG_GREEK_GREECE 0x01
+# endif
+# ifndef SUBLANG_GREENLANDIC_GREENLAND
+# define SUBLANG_GREENLANDIC_GREENLAND 0x01
+# endif
+# ifndef SUBLANG_GUJARATI_INDIA
+# define SUBLANG_GUJARATI_INDIA 0x01
+# endif
+# ifndef SUBLANG_HAUSA_NIGERIA_LATIN
+# define SUBLANG_HAUSA_NIGERIA_LATIN 0x01
+# endif
+# ifndef SUBLANG_HEBREW_ISRAEL
+# define SUBLANG_HEBREW_ISRAEL 0x01
+# endif
+# ifndef SUBLANG_HINDI_INDIA
+# define SUBLANG_HINDI_INDIA 0x01
+# endif
+# ifndef SUBLANG_HUNGARIAN_HUNGARY
+# define SUBLANG_HUNGARIAN_HUNGARY 0x01
+# endif
+# ifndef SUBLANG_ICELANDIC_ICELAND
+# define SUBLANG_ICELANDIC_ICELAND 0x01
+# endif
+# ifndef SUBLANG_IGBO_NIGERIA
+# define SUBLANG_IGBO_NIGERIA 0x01
+# endif
+# ifndef SUBLANG_INDONESIAN_INDONESIA
+# define SUBLANG_INDONESIAN_INDONESIA 0x01
+# endif
+# ifndef SUBLANG_INUKTITUT_CANADA
+# define SUBLANG_INUKTITUT_CANADA 0x01
+# endif
+# undef SUBLANG_INUKTITUT_CANADA_LATIN
+# define SUBLANG_INUKTITUT_CANADA_LATIN 0x02
+# undef SUBLANG_IRISH_IRELAND
+# define SUBLANG_IRISH_IRELAND 0x02
+# ifndef SUBLANG_JAPANESE_JAPAN
+# define SUBLANG_JAPANESE_JAPAN 0x01
+# endif
+# ifndef SUBLANG_KANNADA_INDIA
+# define SUBLANG_KANNADA_INDIA 0x01
+# endif
+# ifndef SUBLANG_KASHMIRI_INDIA
+# define SUBLANG_KASHMIRI_INDIA 0x02
+# endif
+# ifndef SUBLANG_KAZAK_KAZAKHSTAN
+# define SUBLANG_KAZAK_KAZAKHSTAN 0x01
+# endif
+# ifndef SUBLANG_KICHE_GUATEMALA
+# define SUBLANG_KICHE_GUATEMALA 0x01
+# endif
+# ifndef SUBLANG_KINYARWANDA_RWANDA
+# define SUBLANG_KINYARWANDA_RWANDA 0x01
+# endif
+# ifndef SUBLANG_KONKANI_INDIA
+# define SUBLANG_KONKANI_INDIA 0x01
+# endif
+# ifndef SUBLANG_KYRGYZ_KYRGYZSTAN
+# define SUBLANG_KYRGYZ_KYRGYZSTAN 0x01
+# endif
+# ifndef SUBLANG_LAO_LAOS
+# define SUBLANG_LAO_LAOS 0x01
+# endif
+# ifndef SUBLANG_LATVIAN_LATVIA
+# define SUBLANG_LATVIAN_LATVIA 0x01
+# endif
+# ifndef SUBLANG_LITHUANIAN_LITHUANIA
+# define SUBLANG_LITHUANIAN_LITHUANIA 0x01
+# endif
+# undef SUBLANG_LOWER_SORBIAN_GERMANY
+# define SUBLANG_LOWER_SORBIAN_GERMANY 0x02
+# ifndef SUBLANG_LUXEMBOURGISH_LUXEMBOURG
+# define SUBLANG_LUXEMBOURGISH_LUXEMBOURG 0x01
+# endif
+# ifndef SUBLANG_MACEDONIAN_MACEDONIA
+# define SUBLANG_MACEDONIAN_MACEDONIA 0x01
+# endif
+# ifndef SUBLANG_MALAY_MALAYSIA
+# define SUBLANG_MALAY_MALAYSIA 0x01
+# endif
+# ifndef SUBLANG_MALAY_BRUNEI_DARUSSALAM
+# define SUBLANG_MALAY_BRUNEI_DARUSSALAM 0x02
+# endif
+# ifndef SUBLANG_MALAYALAM_INDIA
+# define SUBLANG_MALAYALAM_INDIA 0x01
+# endif
+# ifndef SUBLANG_MALTESE_MALTA
+# define SUBLANG_MALTESE_MALTA 0x01
+# endif
+# ifndef SUBLANG_MAORI_NEW_ZEALAND
+# define SUBLANG_MAORI_NEW_ZEALAND 0x01
+# endif
+# ifndef SUBLANG_MAPUDUNGUN_CHILE
+# define SUBLANG_MAPUDUNGUN_CHILE 0x01
+# endif
+# ifndef SUBLANG_MARATHI_INDIA
+# define SUBLANG_MARATHI_INDIA 0x01
+# endif
+# ifndef SUBLANG_MOHAWK_CANADA
+# define SUBLANG_MOHAWK_CANADA 0x01
+# endif
+# ifndef SUBLANG_MONGOLIAN_CYRILLIC_MONGOLIA
+# define SUBLANG_MONGOLIAN_CYRILLIC_MONGOLIA 0x01
+# endif
+# ifndef SUBLANG_MONGOLIAN_PRC
+# define SUBLANG_MONGOLIAN_PRC 0x02
+# endif
+# ifndef SUBLANG_NEPALI_NEPAL
+# define SUBLANG_NEPALI_NEPAL 0x01
+# endif
+# ifndef SUBLANG_NEPALI_INDIA
+# define SUBLANG_NEPALI_INDIA 0x02
+# endif
+# ifndef SUBLANG_OCCITAN_FRANCE
+# define SUBLANG_OCCITAN_FRANCE 0x01
+# endif
+# ifndef SUBLANG_ORIYA_INDIA
+# define SUBLANG_ORIYA_INDIA 0x01
+# endif
+# ifndef SUBLANG_PASHTO_AFGHANISTAN
+# define SUBLANG_PASHTO_AFGHANISTAN 0x01
+# endif
+# ifndef SUBLANG_POLISH_POLAND
+# define SUBLANG_POLISH_POLAND 0x01
+# endif
+# ifndef SUBLANG_PUNJABI_INDIA
+# define SUBLANG_PUNJABI_INDIA 0x01
+# endif
+# ifndef SUBLANG_PUNJABI_PAKISTAN
+# define SUBLANG_PUNJABI_PAKISTAN 0x02
+# endif
+# ifndef SUBLANG_QUECHUA_BOLIVIA
+# define SUBLANG_QUECHUA_BOLIVIA 0x01
+# endif
+# ifndef SUBLANG_QUECHUA_ECUADOR
+# define SUBLANG_QUECHUA_ECUADOR 0x02
+# endif
+# ifndef SUBLANG_QUECHUA_PERU
+# define SUBLANG_QUECHUA_PERU 0x03
+# endif
+# ifndef SUBLANG_ROMANIAN_ROMANIA
+# define SUBLANG_ROMANIAN_ROMANIA 0x01
+# endif
+# ifndef SUBLANG_ROMANIAN_MOLDOVA
+# define SUBLANG_ROMANIAN_MOLDOVA 0x02
+# endif
+# ifndef SUBLANG_ROMANSH_SWITZERLAND
+# define SUBLANG_ROMANSH_SWITZERLAND 0x01
+# endif
+# ifndef SUBLANG_RUSSIAN_RUSSIA
+# define SUBLANG_RUSSIAN_RUSSIA 0x01
+# endif
+# ifndef SUBLANG_RUSSIAN_MOLDAVIA
+# define SUBLANG_RUSSIAN_MOLDAVIA 0x02
+# endif
+# ifndef SUBLANG_SAMI_NORTHERN_NORWAY
+# define SUBLANG_SAMI_NORTHERN_NORWAY 0x01
+# endif
+# ifndef SUBLANG_SAMI_NORTHERN_SWEDEN
+# define SUBLANG_SAMI_NORTHERN_SWEDEN 0x02
+# endif
+# ifndef SUBLANG_SAMI_NORTHERN_FINLAND
+# define SUBLANG_SAMI_NORTHERN_FINLAND 0x03
+# endif
+# ifndef SUBLANG_SAMI_LULE_NORWAY
+# define SUBLANG_SAMI_LULE_NORWAY 0x04
+# endif
+# ifndef SUBLANG_SAMI_LULE_SWEDEN
+# define SUBLANG_SAMI_LULE_SWEDEN 0x05
+# endif
+# ifndef SUBLANG_SAMI_SOUTHERN_NORWAY
+# define SUBLANG_SAMI_SOUTHERN_NORWAY 0x06
+# endif
+# ifndef SUBLANG_SAMI_SOUTHERN_SWEDEN
+# define SUBLANG_SAMI_SOUTHERN_SWEDEN 0x07
+# endif
+# undef SUBLANG_SAMI_SKOLT_FINLAND
+# define SUBLANG_SAMI_SKOLT_FINLAND 0x08
+# undef SUBLANG_SAMI_INARI_FINLAND
+# define SUBLANG_SAMI_INARI_FINLAND 0x09
+# ifndef SUBLANG_SANSKRIT_INDIA
+# define SUBLANG_SANSKRIT_INDIA 0x01
+# endif
+# ifndef SUBLANG_SERBIAN_LATIN
+# define SUBLANG_SERBIAN_LATIN 0x02
+# endif
+# ifndef SUBLANG_SERBIAN_CYRILLIC
+# define SUBLANG_SERBIAN_CYRILLIC 0x03
+# endif
+# ifndef SUBLANG_SINDHI_INDIA
+# define SUBLANG_SINDHI_INDIA 0x01
+# endif
+# undef SUBLANG_SINDHI_PAKISTAN
+# define SUBLANG_SINDHI_PAKISTAN 0x02
+# ifndef SUBLANG_SINDHI_AFGHANISTAN
+# define SUBLANG_SINDHI_AFGHANISTAN 0x02
+# endif
+# ifndef SUBLANG_SINHALESE_SRI_LANKA
+# define SUBLANG_SINHALESE_SRI_LANKA 0x01
+# endif
+# ifndef SUBLANG_SLOVAK_SLOVAKIA
+# define SUBLANG_SLOVAK_SLOVAKIA 0x01
+# endif
+# ifndef SUBLANG_SLOVENIAN_SLOVENIA
+# define SUBLANG_SLOVENIAN_SLOVENIA 0x01
+# endif
+# ifndef SUBLANG_SOTHO_SOUTH_AFRICA
+# define SUBLANG_SOTHO_SOUTH_AFRICA 0x01
+# endif
+# ifndef SUBLANG_SPANISH_GUATEMALA
+# define SUBLANG_SPANISH_GUATEMALA 0x04
+# endif
+# ifndef SUBLANG_SPANISH_COSTA_RICA
+# define SUBLANG_SPANISH_COSTA_RICA 0x05
+# endif
+# ifndef SUBLANG_SPANISH_PANAMA
+# define SUBLANG_SPANISH_PANAMA 0x06
+# endif
+# ifndef SUBLANG_SPANISH_DOMINICAN_REPUBLIC
+# define SUBLANG_SPANISH_DOMINICAN_REPUBLIC 0x07
+# endif
+# ifndef SUBLANG_SPANISH_VENEZUELA
+# define SUBLANG_SPANISH_VENEZUELA 0x08
+# endif
+# ifndef SUBLANG_SPANISH_COLOMBIA
+# define SUBLANG_SPANISH_COLOMBIA 0x09
+# endif
+# ifndef SUBLANG_SPANISH_PERU
+# define SUBLANG_SPANISH_PERU 0x0a
+# endif
+# ifndef SUBLANG_SPANISH_ARGENTINA
+# define SUBLANG_SPANISH_ARGENTINA 0x0b
+# endif
+# ifndef SUBLANG_SPANISH_ECUADOR
+# define SUBLANG_SPANISH_ECUADOR 0x0c
+# endif
+# ifndef SUBLANG_SPANISH_CHILE
+# define SUBLANG_SPANISH_CHILE 0x0d
+# endif
+# ifndef SUBLANG_SPANISH_URUGUAY
+# define SUBLANG_SPANISH_URUGUAY 0x0e
+# endif
+# ifndef SUBLANG_SPANISH_PARAGUAY
+# define SUBLANG_SPANISH_PARAGUAY 0x0f
+# endif
+# ifndef SUBLANG_SPANISH_BOLIVIA
+# define SUBLANG_SPANISH_BOLIVIA 0x10
+# endif
+# ifndef SUBLANG_SPANISH_EL_SALVADOR
+# define SUBLANG_SPANISH_EL_SALVADOR 0x11
+# endif
+# ifndef SUBLANG_SPANISH_HONDURAS
+# define SUBLANG_SPANISH_HONDURAS 0x12
+# endif
+# ifndef SUBLANG_SPANISH_NICARAGUA
+# define SUBLANG_SPANISH_NICARAGUA 0x13
+# endif
+# ifndef SUBLANG_SPANISH_PUERTO_RICO
+# define SUBLANG_SPANISH_PUERTO_RICO 0x14
+# endif
+# ifndef SUBLANG_SPANISH_US
+# define SUBLANG_SPANISH_US 0x15
+# endif
+# ifndef SUBLANG_SWAHILI_KENYA
+# define SUBLANG_SWAHILI_KENYA 0x01
+# endif
+# ifndef SUBLANG_SWEDISH_SWEDEN
+# define SUBLANG_SWEDISH_SWEDEN 0x01
+# endif
+# ifndef SUBLANG_SWEDISH_FINLAND
+# define SUBLANG_SWEDISH_FINLAND 0x02
+# endif
+# ifndef SUBLANG_SYRIAC_SYRIA
+# define SUBLANG_SYRIAC_SYRIA 0x01
+# endif
+# ifndef SUBLANG_TAGALOG_PHILIPPINES
+# define SUBLANG_TAGALOG_PHILIPPINES 0x01
+# endif
+# ifndef SUBLANG_TAJIK_TAJIKISTAN
+# define SUBLANG_TAJIK_TAJIKISTAN 0x01
+# endif
+# ifndef SUBLANG_TAMAZIGHT_ARABIC
+# define SUBLANG_TAMAZIGHT_ARABIC 0x01
+# endif
+# ifndef SUBLANG_TAMAZIGHT_ALGERIA_LATIN
+# define SUBLANG_TAMAZIGHT_ALGERIA_LATIN 0x02
+# endif
+# ifndef SUBLANG_TAMIL_INDIA
+# define SUBLANG_TAMIL_INDIA 0x01
+# endif
+# ifndef SUBLANG_TATAR_RUSSIA
+# define SUBLANG_TATAR_RUSSIA 0x01
+# endif
+# ifndef SUBLANG_TELUGU_INDIA
+# define SUBLANG_TELUGU_INDIA 0x01
+# endif
+# ifndef SUBLANG_THAI_THAILAND
+# define SUBLANG_THAI_THAILAND 0x01
+# endif
+# ifndef SUBLANG_TIBETAN_PRC
+# define SUBLANG_TIBETAN_PRC 0x01
+# endif
+# undef SUBLANG_TIBETAN_BHUTAN
+# define SUBLANG_TIBETAN_BHUTAN 0x02
+# ifndef SUBLANG_TIGRINYA_ETHIOPIA
+# define SUBLANG_TIGRINYA_ETHIOPIA 0x01
+# endif
+# ifndef SUBLANG_TIGRINYA_ERITREA
+# define SUBLANG_TIGRINYA_ERITREA 0x02
+# endif
+# ifndef SUBLANG_TSWANA_SOUTH_AFRICA
+# define SUBLANG_TSWANA_SOUTH_AFRICA 0x01
+# endif
+# ifndef SUBLANG_TURKISH_TURKEY
+# define SUBLANG_TURKISH_TURKEY 0x01
+# endif
+# ifndef SUBLANG_TURKMEN_TURKMENISTAN
+# define SUBLANG_TURKMEN_TURKMENISTAN 0x01
+# endif
+# ifndef SUBLANG_UIGHUR_PRC
+# define SUBLANG_UIGHUR_PRC 0x01
+# endif
+# ifndef SUBLANG_UKRAINIAN_UKRAINE
+# define SUBLANG_UKRAINIAN_UKRAINE 0x01
+# endif
+# ifndef SUBLANG_UPPER_SORBIAN_GERMANY
+# define SUBLANG_UPPER_SORBIAN_GERMANY 0x01
+# endif
+# ifndef SUBLANG_URDU_PAKISTAN
+# define SUBLANG_URDU_PAKISTAN 0x01
+# endif
+# ifndef SUBLANG_URDU_INDIA
+# define SUBLANG_URDU_INDIA 0x02
+# endif
+# ifndef SUBLANG_UZBEK_LATIN
+# define SUBLANG_UZBEK_LATIN 0x01
+# endif
+# ifndef SUBLANG_UZBEK_CYRILLIC
+# define SUBLANG_UZBEK_CYRILLIC 0x02
+# endif
+# ifndef SUBLANG_VIETNAMESE_VIETNAM
+# define SUBLANG_VIETNAMESE_VIETNAM 0x01
+# endif
+# ifndef SUBLANG_WELSH_UNITED_KINGDOM
+# define SUBLANG_WELSH_UNITED_KINGDOM 0x01
+# endif
+# ifndef SUBLANG_WOLOF_SENEGAL
+# define SUBLANG_WOLOF_SENEGAL 0x01
+# endif
+# ifndef SUBLANG_XHOSA_SOUTH_AFRICA
+# define SUBLANG_XHOSA_SOUTH_AFRICA 0x01
+# endif
+# ifndef SUBLANG_YAKUT_RUSSIA
+# define SUBLANG_YAKUT_RUSSIA 0x01
+# endif
+# ifndef SUBLANG_YI_PRC
+# define SUBLANG_YI_PRC 0x01
+# endif
+# ifndef SUBLANG_YORUBA_NIGERIA
+# define SUBLANG_YORUBA_NIGERIA 0x01
+# endif
+# ifndef SUBLANG_ZULU_SOUTH_AFRICA
+# define SUBLANG_ZULU_SOUTH_AFRICA 0x01
+# endif
+/* GetLocaleInfoA operations.  */
+# ifndef LOCALE_SNAME
+# define LOCALE_SNAME 0x5c
+# endif
+# ifndef LOCALE_NAME_MAX_LENGTH
+# define LOCALE_NAME_MAX_LENGTH 85
+# endif
+#endif
+
+/* We want to use the system's setlocale() function here, not the gnulib
+   override.  */
+#undef setlocale
+
+
+#if HAVE_CFPREFERENCESCOPYAPPVALUE
+/* Mac OS X 10.4 or newer */
+
+/* Canonicalize a Mac OS X locale name to a Unix locale name.
+   NAME is a sufficiently large buffer.
+   On input, it contains the Mac OS X locale name.
+   On output, it contains the Unix locale name.  */
+# if !defined IN_LIBINTL
+static
+# endif
+void
+gl_locale_name_canonicalize (char *name)
+{
+  /* This conversion is based on a posting by
+     Deborah GoldSmith <goldsmit@apple.com> on 2005-03-08,
+     https://lists.apple.com/archives/carbon-dev/2005/Mar/msg00293.html */
+
+  /* Convert legacy (NeXTstep inherited) English names to Unix (ISO 639 and
+     ISO 3166) names.  Prior to Mac OS X 10.3, there is no API for doing this.
+     Therefore we do it ourselves, using a table based on the results of the
+     Mac OS X 10.3.8 function
+     CFLocaleCreateCanonicalLocaleIdentifierFromString().  */
+  typedef struct { const char legacy[21+1]; const char unixy[5+1]; }
+          legacy_entry;
+  static const legacy_entry legacy_table[] = {
+    { "Afrikaans",             "af" },
+    { "Albanian",              "sq" },
+    { "Amharic",               "am" },
+    { "Arabic",                "ar" },
+    { "Armenian",              "hy" },
+    { "Assamese",              "as" },
+    { "Aymara",                "ay" },
+    { "Azerbaijani",           "az" },
+    { "Basque",                "eu" },
+    { "Belarusian",            "be" },
+    { "Belorussian",           "be" },
+    { "Bengali",               "bn" },
+    { "Brazilian Portugese",   "pt_BR" },
+    { "Brazilian Portuguese",  "pt_BR" },
+    { "Breton",                "br" },
+    { "Bulgarian",             "bg" },
+    { "Burmese",               "my" },
+    { "Byelorussian",          "be" },
+    { "Catalan",               "ca" },
+    { "Chewa",                 "ny" },
+    { "Chichewa",              "ny" },
+    { "Chinese",               "zh" },
+    { "Chinese, Simplified",   "zh_CN" },
+    { "Chinese, Traditional",  "zh_TW" },
+    { "Chinese, Tradtional",   "zh_TW" },
+    { "Croatian",              "hr" },
+    { "Czech",                 "cs" },
+    { "Danish",                "da" },
+    { "Dutch",                 "nl" },
+    { "Dzongkha",              "dz" },
+    { "English",               "en" },
+    { "Esperanto",             "eo" },
+    { "Estonian",              "et" },
+    { "Faroese",               "fo" },
+    { "Farsi",                 "fa" },
+    { "Finnish",               "fi" },
+    { "Flemish",               "nl_BE" },
+    { "French",                "fr" },
+    { "Galician",              "gl" },
+    { "Gallegan",              "gl" },
+    { "Georgian",              "ka" },
+    { "German",                "de" },
+    { "Greek",                 "el" },
+    { "Greenlandic",           "kl" },
+    { "Guarani",               "gn" },
+    { "Gujarati",              "gu" },
+    { "Hawaiian",              "haw" }, /* Yes, "haw", not "cpe".  */
+    { "Hebrew",                "he" },
+    { "Hindi",                 "hi" },
+    { "Hungarian",             "hu" },
+    { "Icelandic",             "is" },
+    { "Indonesian",            "id" },
+    { "Inuktitut",             "iu" },
+    { "Irish",                 "ga" },
+    { "Italian",               "it" },
+    { "Japanese",              "ja" },
+    { "Javanese",              "jv" },
+    { "Kalaallisut",           "kl" },
+    { "Kannada",               "kn" },
+    { "Kashmiri",              "ks" },
+    { "Kazakh",                "kk" },
+    { "Khmer",                 "km" },
+    { "Kinyarwanda",           "rw" },
+    { "Kirghiz",               "ky" },
+    { "Korean",                "ko" },
+    { "Kurdish",               "ku" },
+    { "Latin",                 "la" },
+    { "Latvian",               "lv" },
+    { "Lithuanian",            "lt" },
+    { "Macedonian",            "mk" },
+    { "Malagasy",              "mg" },
+    { "Malay",                 "ms" },
+    { "Malayalam",             "ml" },
+    { "Maltese",               "mt" },
+    { "Manx",                  "gv" },
+    { "Marathi",               "mr" },
+    { "Moldavian",             "mo" },
+    { "Mongolian",             "mn" },
+    { "Nepali",                "ne" },
+    { "Norwegian",             "nb" }, /* Yes, "nb", not the obsolete "no".  */
+    { "Nyanja",                "ny" },
+    { "Nynorsk",               "nn" },
+    { "Oriya",                 "or" },
+    { "Oromo",                 "om" },
+    { "Panjabi",               "pa" },
+    { "Pashto",                "ps" },
+    { "Persian",               "fa" },
+    { "Polish",                "pl" },
+    { "Portuguese",            "pt" },
+    { "Portuguese, Brazilian", "pt_BR" },
+    { "Punjabi",               "pa" },
+    { "Pushto",                "ps" },
+    { "Quechua",               "qu" },
+    { "Romanian",              "ro" },
+    { "Ruanda",                "rw" },
+    { "Rundi",                 "rn" },
+    { "Russian",               "ru" },
+    { "Sami",                  "se_NO" }, /* Not just "se".  */
+    { "Sanskrit",              "sa" },
+    { "Scottish",              "gd" },
+    { "Serbian",               "sr" },
+    { "Simplified Chinese",    "zh_CN" },
+    { "Sindhi",                "sd" },
+    { "Sinhalese",             "si" },
+    { "Slovak",                "sk" },
+    { "Slovenian",             "sl" },
+    { "Somali",                "so" },
+    { "Spanish",               "es" },
+    { "Sundanese",             "su" },
+    { "Swahili",               "sw" },
+    { "Swedish",               "sv" },
+    { "Tagalog",               "tl" },
+    { "Tajik",                 "tg" },
+    { "Tajiki",                "tg" },
+    { "Tamil",                 "ta" },
+    { "Tatar",                 "tt" },
+    { "Telugu",                "te" },
+    { "Thai",                  "th" },
+    { "Tibetan",               "bo" },
+    { "Tigrinya",              "ti" },
+    { "Tongan",                "to" },
+    { "Traditional Chinese",   "zh_TW" },
+    { "Turkish",               "tr" },
+    { "Turkmen",               "tk" },
+    { "Uighur",                "ug" },
+    { "Ukrainian",             "uk" },
+    { "Urdu",                  "ur" },
+    { "Uzbek",                 "uz" },
+    { "Vietnamese",            "vi" },
+    { "Welsh",                 "cy" },
+    { "Yiddish",               "yi" }
+  };
+
+  /* Convert new-style locale names with language tags (ISO 639 and ISO 15924)
+     to Unix (ISO 639 and ISO 3166) names.  */
+  typedef struct { const char langtag[7+1]; const char unixy[12+1]; }
+          langtag_entry;
+  static const langtag_entry langtag_table[] = {
+    /* Mac OS X has "az-Arab", "az-Cyrl", "az-Latn".
+       The default script for az on Unix is Latin.  */
+    { "az-Latn", "az" },
+    /* Mac OS X has "bs-Cyrl", "bs-Latn".
+       The default script for bs on Unix is Latin.  */
+    { "bs-Latn", "bs" },
+    /* Mac OS X has "ga-dots".  Does not yet exist on Unix.  */
+    { "ga-dots", "ga" },
+    /* Mac OS X has "kk-Cyrl".
+       The default script for kk on Unix is Cyrillic.  */
+    { "kk-Cyrl", "kk" },
+    /* Mac OS X has "mn-Cyrl", "mn-Mong".
+       The default script for mn on Unix is Cyrillic.  */
+    { "mn-Cyrl", "mn" },
+    /* Mac OS X has "ms-Arab", "ms-Latn".
+       The default script for ms on Unix is Latin.  */
+    { "ms-Latn", "ms" },
+    /* Mac OS X has "pa-Arab", "pa-Guru".
+       Country codes are used to distinguish these on Unix.  */
+    { "pa-Arab", "pa_PK" },
+    { "pa-Guru", "pa_IN" },
+    /* Mac OS X has "shi-Latn", "shi-Tfng".  Does not yet exist on Unix.  */
+    /* Mac OS X has "sr-Cyrl", "sr-Latn".
+       The default script for sr on Unix is Cyrillic.  */
+    { "sr-Cyrl", "sr" },
+    /* Mac OS X has "tg-Cyrl".
+       The default script for tg on Unix is Cyrillic.  */
+    { "tg-Cyrl", "tg" },
+    /* Mac OS X has "tk-Cyrl".
+       The default script for tk on Unix is Cyrillic.  */
+    { "tk-Cyrl", "tk" },
+    /* Mac OS X has "tt-Cyrl".
+       The default script for tt on Unix is Cyrillic.  */
+    { "tt-Cyrl", "tt" },
+    /* Mac OS X has "uz-Arab", "uz-Cyrl", "uz-Latn".
+       The default script for uz on Unix is Latin.  */
+    { "uz-Latn", "uz" },
+    /* Mac OS X has "vai-Latn", "vai-Vaii".  Does not yet exist on Unix.  */
+    /* Mac OS X has "yue-Hans", "yue-Hant".
+       The default script for yue on Unix is Simplified Han.  */
+    { "yue-Hans", "yue" },
+    /* Mac OS X has "zh-Hans", "zh-Hant".
+       Country codes are used to distinguish these on Unix.  */
+    { "zh-Hans", "zh_CN" },
+    { "zh-Hant", "zh_TW" }
+  };
+
+  /* Convert script names (ISO 15924) to Unix conventions.
+     See https://www.unicode.org/iso15924/iso15924-codes.html  */
+  typedef struct { const char script[4+1]; const char unixy[9+1]; }
+          script_entry;
+  static const script_entry script_table[] = {
+    { "Arab", "arabic" },
+    { "Cyrl", "cyrillic" },
+    { "Latn", "latin" },
+    { "Mong", "mongolian" }
+  };
+
+  /* Step 1: Convert using legacy_table.  */
+  if (name[0] >= 'A' && name[0] <= 'Z')
+    {
+      unsigned int i1, i2;
+      i1 = 0;
+      i2 = sizeof (legacy_table) / sizeof (legacy_entry);
+      while (i2 - i1 > 1)
+        {
+          /* At this point we know that if name occurs in legacy_table,
+             its index must be >= i1 and < i2.  */
+          unsigned int i = (i1 + i2) >> 1;
+          const legacy_entry *p = &legacy_table[i];
+          if (strcmp (name, p->legacy) < 0)
+            i2 = i;
+          else
+            i1 = i;
+        }
+      if (strcmp (name, legacy_table[i1].legacy) == 0)
+        {
+          strcpy (name, legacy_table[i1].unixy);
+          return;
+        }
+    }
+
+  /* Step 2: Convert using langtag_table and script_table.  */
+  if (strlen (name) == 7 && name[2] == '-')
+    {
+      unsigned int i1, i2;
+      i1 = 0;
+      i2 = sizeof (langtag_table) / sizeof (langtag_entry);
+      while (i2 - i1 > 1)
+        {
+          /* At this point we know that if name occurs in langtag_table,
+             its index must be >= i1 and < i2.  */
+          unsigned int i = (i1 + i2) >> 1;
+          const langtag_entry *p = &langtag_table[i];
+          if (strcmp (name, p->langtag) < 0)
+            i2 = i;
+          else
+            i1 = i;
+        }
+      if (strcmp (name, langtag_table[i1].langtag) == 0)
+        {
+          strcpy (name, langtag_table[i1].unixy);
+          return;
+        }
+
+      i1 = 0;
+      i2 = sizeof (script_table) / sizeof (script_entry);
+      while (i2 - i1 > 1)
+        {
+          /* At this point we know that if (name + 3) occurs in script_table,
+             its index must be >= i1 and < i2.  */
+          unsigned int i = (i1 + i2) >> 1;
+          const script_entry *p = &script_table[i];
+          if (strcmp (name + 3, p->script) < 0)
+            i2 = i;
+          else
+            i1 = i;
+        }
+      if (strcmp (name + 3, script_table[i1].script) == 0)
+        {
+          name[2] = '@';
+          strcpy (name + 3, script_table[i1].unixy);
+          return;
+        }
+    }
+
+  /* Step 3: Convert new-style dash to Unix underscore. */
+  {
+    char *p;
+    for (p = name; *p != '\0'; p++)
+      if (*p == '-')
+        *p = '_';
+  }
+}
+
+#endif
+
+
+#if defined WINDOWS_NATIVE || defined __CYGWIN__ /* Native Windows or Cygwin */
+
+/* Canonicalize a Windows native locale name to a Unix locale name.
+   NAME is a sufficiently large buffer.
+   On input, it contains the Windows locale name.
+   On output, it contains the Unix locale name.  */
+# if !defined IN_LIBINTL
+static
+# endif
+void
+gl_locale_name_canonicalize (char *name)
+{
+  /* FIXME: This is probably incomplete: it does not handle "zh-Hans" and
+     "zh-Hant".  */
+  char *p;
+
+  for (p = name; *p != '\0'; p++)
+    if (*p == '-')
+      {
+        *p = '_';
+        p++;
+        for (; *p != '\0'; p++)
+          {
+            if (*p >= 'a' && *p <= 'z')
+              *p += 'A' - 'a';
+            if (*p == '-')
+              {
+                *p = '\0';
+                return;
+              }
+          }
+        return;
+      }
+}
+
+# if !defined IN_LIBINTL
+static
+# endif
+const char *
+gl_locale_name_from_win32_LANGID (LANGID langid)
+{
+  /* Activate the new code only when the GETTEXT_MUI environment variable is
+     set, for the time being, since the new code is not well tested.  */
+  if (getenv ("GETTEXT_MUI") != NULL)
+    {
+      static char namebuf[256];
+
+      /* Query the system's notion of locale name.
+         On Windows95/98/ME, GetLocaleInfoA returns some incorrect results.
+         But we don't need to support systems that are so old.  */
+      if (GetLocaleInfoA (MAKELCID (langid, SORT_DEFAULT), LOCALE_SNAME,
+                          namebuf, sizeof (namebuf) - 1))
+        {
+          /* Convert it to a Unix locale name.  */
+          gl_locale_name_canonicalize (namebuf);
+          return namebuf;
+        }
+    }
+  /* Internet Explorer has an LCID to RFC3066 name mapping stored in
+     HKEY_CLASSES_ROOT\Mime\Database\Rfc1766.  But we better don't use that
+     since IE's i18n subsystem is known to be inconsistent with the native
+     Windows base (e.g. they have different character conversion facilities
+     that produce different results).  */
+  /* Use our own table.  */
+  {
+    int primary, sub;
+
+    /* Split into language and territory part.  */
+    primary = PRIMARYLANGID (langid);
+    sub = SUBLANGID (langid);
+
+    /* Dispatch on language.
+       See also https://www.unicode.org/unicode/onlinedat/languages.html .
+       For details about languages, see https://www.ethnologue.com/ .  */
+    switch (primary)
+      {
+      case LANG_AFRIKAANS:
+        switch (sub)
+          {
+          case SUBLANG_AFRIKAANS_SOUTH_AFRICA: return "af_ZA";
+          }
+        return "af";
+      case LANG_ALBANIAN:
+        switch (sub)
+          {
+          case SUBLANG_ALBANIAN_ALBANIA: return "sq_AL";
+          }
+        return "sq";
+      case LANG_ALSATIAN:
+        switch (sub)
+          {
+          case SUBLANG_ALSATIAN_FRANCE: return "gsw_FR";
+          }
+        return "gsw";
+      case LANG_AMHARIC:
+        switch (sub)
+          {
+          case SUBLANG_AMHARIC_ETHIOPIA: return "am_ET";
+          }
+        return "am";
+      case LANG_ARABIC:
+        switch (sub)
+          {
+          case SUBLANG_ARABIC_SAUDI_ARABIA: return "ar_SA";
+          case SUBLANG_ARABIC_IRAQ: return "ar_IQ";
+          case SUBLANG_ARABIC_EGYPT: return "ar_EG";
+          case SUBLANG_ARABIC_LIBYA: return "ar_LY";
+          case SUBLANG_ARABIC_ALGERIA: return "ar_DZ";
+          case SUBLANG_ARABIC_MOROCCO: return "ar_MA";
+          case SUBLANG_ARABIC_TUNISIA: return "ar_TN";
+          case SUBLANG_ARABIC_OMAN: return "ar_OM";
+          case SUBLANG_ARABIC_YEMEN: return "ar_YE";
+          case SUBLANG_ARABIC_SYRIA: return "ar_SY";
+          case SUBLANG_ARABIC_JORDAN: return "ar_JO";
+          case SUBLANG_ARABIC_LEBANON: return "ar_LB";
+          case SUBLANG_ARABIC_KUWAIT: return "ar_KW";
+          case SUBLANG_ARABIC_UAE: return "ar_AE";
+          case SUBLANG_ARABIC_BAHRAIN: return "ar_BH";
+          case SUBLANG_ARABIC_QATAR: return "ar_QA";
+          }
+        return "ar";
+      case LANG_ARMENIAN:
+        switch (sub)
+          {
+          case SUBLANG_ARMENIAN_ARMENIA: return "hy_AM";
+          }
+        return "hy";
+      case LANG_ASSAMESE:
+        switch (sub)
+          {
+          case SUBLANG_ASSAMESE_INDIA: return "as_IN";
+          }
+        return "as";
+      case LANG_AZERI:
+        switch (sub)
+          {
+          /* FIXME: Adjust this when Azerbaijani locales appear on Unix.  */
+          case 0x1e: return "az@latin";
+          case SUBLANG_AZERI_LATIN: return "az_AZ@latin";
+          case 0x1d: return "az@cyrillic";
+          case SUBLANG_AZERI_CYRILLIC: return "az_AZ@cyrillic";
+          }
+        return "az";
+      case LANG_BASHKIR:
+        switch (sub)
+          {
+          case SUBLANG_BASHKIR_RUSSIA: return "ba_RU";
+          }
+        return "ba";
+      case LANG_BASQUE:
+        switch (sub)
+          {
+          case SUBLANG_BASQUE_BASQUE: return "eu_ES";
+          }
+        return "eu"; /* Ambiguous: could be "eu_ES" or "eu_FR".  */
+      case LANG_BELARUSIAN:
+        switch (sub)
+          {
+          case SUBLANG_BELARUSIAN_BELARUS: return "be_BY";
+          }
+        return "be";
+      case LANG_BENGALI:
+        switch (sub)
+          {
+          case SUBLANG_BENGALI_INDIA: return "bn_IN";
+          case SUBLANG_BENGALI_BANGLADESH: return "bn_BD";
+          }
+        return "bn";
+      case LANG_BRETON:
+        switch (sub)
+          {
+          case SUBLANG_BRETON_FRANCE: return "br_FR";
+          }
+        return "br";
+      case LANG_BULGARIAN:
+        switch (sub)
+          {
+          case SUBLANG_BULGARIAN_BULGARIA: return "bg_BG";
+          }
+        return "bg";
+      case LANG_BURMESE:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "my_MM";
+          }
+        return "my";
+      case LANG_CAMBODIAN:
+        switch (sub)
+          {
+          case SUBLANG_CAMBODIAN_CAMBODIA: return "km_KH";
+          }
+        return "km";
+      case LANG_CATALAN:
+        switch (sub)
+          {
+          case SUBLANG_CATALAN_SPAIN: return "ca_ES";
+          }
+        return "ca";
+      case LANG_CHEROKEE:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "chr_US";
+          }
+        return "chr";
+      case LANG_CHINESE:
+        switch (sub)
+          {
+          case SUBLANG_CHINESE_TRADITIONAL: case 0x1f: return "zh_TW";
+          case SUBLANG_CHINESE_SIMPLIFIED: case 0x00: return "zh_CN";
+          case SUBLANG_CHINESE_HONGKONG: return "zh_HK"; /* traditional */
+          case SUBLANG_CHINESE_SINGAPORE: return "zh_SG"; /* simplified */
+          case SUBLANG_CHINESE_MACAU: return "zh_MO"; /* traditional */
+          }
+        return "zh";
+      case LANG_CORSICAN:
+        switch (sub)
+          {
+          case SUBLANG_CORSICAN_FRANCE: return "co_FR";
+          }
+        return "co";
+      case LANG_CROATIAN:      /* LANG_CROATIAN == LANG_SERBIAN == LANG_BOSNIAN
+                                * What used to be called Serbo-Croatian
+                                * should really now be two separate
+                                * languages because of political reasons.
+                                * (Says tml, who knows nothing about Serbian
+                                * or Croatian.)
+                                * (I can feel those flames coming already.)
+                                */
+        switch (sub)
+          {
+          /* Croatian */
+          case 0x00: return "hr";
+          case SUBLANG_CROATIAN_CROATIA: return "hr_HR";
+          case SUBLANG_CROATIAN_BOSNIA_HERZEGOVINA_LATIN: return "hr_BA";
+          /* Serbian */
+          case 0x1f: return "sr";
+          case 0x1c: return "sr"; /* latin */
+          case SUBLANG_SERBIAN_LATIN: return "sr_CS"; /* latin */
+          case 0x09: return "sr_RS"; /* latin */
+          case 0x0b: return "sr_ME"; /* latin */
+          case 0x06: return "sr_BA"; /* latin */
+          case 0x1b: return "sr@cyrillic";
+          case SUBLANG_SERBIAN_CYRILLIC: return "sr_CS@cyrillic";
+          case 0x0a: return "sr_RS@cyrillic";
+          case 0x0c: return "sr_ME@cyrillic";
+          case 0x07: return "sr_BA@cyrillic";
+          /* Bosnian */
+          case 0x1e: return "bs";
+          case 0x1a: return "bs"; /* latin */
+          case SUBLANG_BOSNIAN_BOSNIA_HERZEGOVINA_LATIN: return "bs_BA"; /* latin */
+          case 0x19: return "bs@cyrillic";
+          case SUBLANG_BOSNIAN_BOSNIA_HERZEGOVINA_CYRILLIC: return "bs_BA@cyrillic";
+          }
+        return "hr";
+      case LANG_CZECH:
+        switch (sub)
+          {
+          case SUBLANG_CZECH_CZECH_REPUBLIC: return "cs_CZ";
+          }
+        return "cs";
+      case LANG_DANISH:
+        switch (sub)
+          {
+          case SUBLANG_DANISH_DENMARK: return "da_DK";
+          }
+        return "da";
+      case LANG_DARI:
+        /* FIXME: Adjust this when such locales appear on Unix.  */
+        switch (sub)
+          {
+          case SUBLANG_DARI_AFGHANISTAN: return "prs_AF";
+          }
+        return "prs";
+      case LANG_DIVEHI:
+        switch (sub)
+          {
+          case SUBLANG_DIVEHI_MALDIVES: return "dv_MV";
+          }
+        return "dv";
+      case LANG_DUTCH:
+        switch (sub)
+          {
+          case SUBLANG_DUTCH: return "nl_NL";
+          case SUBLANG_DUTCH_BELGIAN: /* FLEMISH, VLAAMS */ return "nl_BE";
+          case SUBLANG_DUTCH_SURINAM: return "nl_SR";
+          }
+        return "nl";
+      case LANG_EDO:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "bin_NG";
+          }
+        return "bin";
+      case LANG_ENGLISH:
+        switch (sub)
+          {
+          /* SUBLANG_ENGLISH_US == SUBLANG_DEFAULT. Heh. I thought
+           * English was the language spoken in England.
+           * Oh well.
+           */
+          case SUBLANG_ENGLISH_US: return "en_US";
+          case SUBLANG_ENGLISH_UK: return "en_GB";
+          case SUBLANG_ENGLISH_AUS: return "en_AU";
+          case SUBLANG_ENGLISH_CAN: return "en_CA";
+          case SUBLANG_ENGLISH_NZ: return "en_NZ";
+          case SUBLANG_ENGLISH_EIRE: return "en_IE";
+          case SUBLANG_ENGLISH_SOUTH_AFRICA: return "en_ZA";
+          case SUBLANG_ENGLISH_JAMAICA: return "en_JM";
+          case SUBLANG_ENGLISH_CARIBBEAN: return "en_GD"; /* Grenada? */
+          case SUBLANG_ENGLISH_BELIZE: return "en_BZ";
+          case SUBLANG_ENGLISH_TRINIDAD: return "en_TT";
+          case SUBLANG_ENGLISH_ZIMBABWE: return "en_ZW";
+          case SUBLANG_ENGLISH_PHILIPPINES: return "en_PH";
+          case SUBLANG_ENGLISH_INDONESIA: return "en_ID";
+          case SUBLANG_ENGLISH_HONGKONG: return "en_HK";
+          case SUBLANG_ENGLISH_INDIA: return "en_IN";
+          case SUBLANG_ENGLISH_MALAYSIA: return "en_MY";
+          case SUBLANG_ENGLISH_SINGAPORE: return "en_SG";
+          }
+        return "en";
+      case LANG_ESTONIAN:
+        switch (sub)
+          {
+          case SUBLANG_ESTONIAN_ESTONIA: return "et_EE";
+          }
+        return "et";
+      case LANG_FAEROESE:
+        switch (sub)
+          {
+          case SUBLANG_FAEROESE_FAROE_ISLANDS: return "fo_FO";
+          }
+        return "fo";
+      case LANG_FARSI:
+        switch (sub)
+          {
+          case SUBLANG_FARSI_IRAN: return "fa_IR";
+          }
+        return "fa";
+      case LANG_FINNISH:
+        switch (sub)
+          {
+          case SUBLANG_FINNISH_FINLAND: return "fi_FI";
+          }
+        return "fi";
+      case LANG_FRENCH:
+        switch (sub)
+          {
+          case SUBLANG_FRENCH: return "fr_FR";
+          case SUBLANG_FRENCH_BELGIAN: /* WALLOON */ return "fr_BE";
+          case SUBLANG_FRENCH_CANADIAN: return "fr_CA";
+          case SUBLANG_FRENCH_SWISS: return "fr_CH";
+          case SUBLANG_FRENCH_LUXEMBOURG: return "fr_LU";
+          case SUBLANG_FRENCH_MONACO: return "fr_MC";
+          case SUBLANG_FRENCH_WESTINDIES: return "fr"; /* Caribbean? */
+          case SUBLANG_FRENCH_REUNION: return "fr_RE";
+          case SUBLANG_FRENCH_CONGO: return "fr_CG";
+          case SUBLANG_FRENCH_SENEGAL: return "fr_SN";
+          case SUBLANG_FRENCH_CAMEROON: return "fr_CM";
+          case SUBLANG_FRENCH_COTEDIVOIRE: return "fr_CI";
+          case SUBLANG_FRENCH_MALI: return "fr_ML";
+          case SUBLANG_FRENCH_MOROCCO: return "fr_MA";
+          case SUBLANG_FRENCH_HAITI: return "fr_HT";
+          }
+        return "fr";
+      case LANG_FRISIAN:
+        switch (sub)
+          {
+          case SUBLANG_FRISIAN_NETHERLANDS: return "fy_NL";
+          }
+        return "fy";
+      case LANG_FULFULDE:
+        /* Spoken in Nigeria, Guinea, Senegal, Mali, Niger, Cameroon, Benin.  */
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "ff_NG";
+          }
+        return "ff";
+      case LANG_GAELIC:
+        switch (sub)
+          {
+          case 0x01: /* SCOTTISH */
+            /* old, superseded by LANG_SCOTTISH_GAELIC */
+            return "gd_GB";
+          case SUBLANG_IRISH_IRELAND: return "ga_IE";
+          }
+        return "ga";
+      case LANG_GALICIAN:
+        switch (sub)
+          {
+          case SUBLANG_GALICIAN_SPAIN: return "gl_ES";
+          }
+        return "gl";
+      case LANG_GEORGIAN:
+        switch (sub)
+          {
+          case SUBLANG_GEORGIAN_GEORGIA: return "ka_GE";
+          }
+        return "ka";
+      case LANG_GERMAN:
+        switch (sub)
+          {
+          case SUBLANG_GERMAN: return "de_DE";
+          case SUBLANG_GERMAN_SWISS: return "de_CH";
+          case SUBLANG_GERMAN_AUSTRIAN: return "de_AT";
+          case SUBLANG_GERMAN_LUXEMBOURG: return "de_LU";
+          case SUBLANG_GERMAN_LIECHTENSTEIN: return "de_LI";
+          }
+        return "de";
+      case LANG_GREEK:
+        switch (sub)
+          {
+          case SUBLANG_GREEK_GREECE: return "el_GR";
+          }
+        return "el";
+      case LANG_GREENLANDIC:
+        switch (sub)
+          {
+          case SUBLANG_GREENLANDIC_GREENLAND: return "kl_GL";
+          }
+        return "kl";
+      case LANG_GUARANI:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "gn_PY";
+          }
+        return "gn";
+      case LANG_GUJARATI:
+        switch (sub)
+          {
+          case SUBLANG_GUJARATI_INDIA: return "gu_IN";
+          }
+        return "gu";
+      case LANG_HAUSA:
+        switch (sub)
+          {
+          case 0x1f: return "ha";
+          case SUBLANG_HAUSA_NIGERIA_LATIN: return "ha_NG";
+          }
+        return "ha";
+      case LANG_HAWAIIAN:
+        /* FIXME: Do they mean Hawaiian ("haw_US", 1000 speakers)
+           or Hawaii Creole English ("cpe_US", 600000 speakers)?  */
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "cpe_US";
+          }
+        return "cpe";
+      case LANG_HEBREW:
+        switch (sub)
+          {
+          case SUBLANG_HEBREW_ISRAEL: return "he_IL";
+          }
+        return "he";
+      case LANG_HINDI:
+        switch (sub)
+          {
+          case SUBLANG_HINDI_INDIA: return "hi_IN";
+          }
+        return "hi";
+      case LANG_HUNGARIAN:
+        switch (sub)
+          {
+          case SUBLANG_HUNGARIAN_HUNGARY: return "hu_HU";
+          }
+        return "hu";
+      case LANG_IBIBIO:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "nic_NG";
+          }
+        return "nic";
+      case LANG_ICELANDIC:
+        switch (sub)
+          {
+          case SUBLANG_ICELANDIC_ICELAND: return "is_IS";
+          }
+        return "is";
+      case LANG_IGBO:
+        switch (sub)
+          {
+          case SUBLANG_IGBO_NIGERIA: return "ig_NG";
+          }
+        return "ig";
+      case LANG_INDONESIAN:
+        switch (sub)
+          {
+          case SUBLANG_INDONESIAN_INDONESIA: return "id_ID";
+          }
+        return "id";
+      case LANG_INUKTITUT:
+        switch (sub)
+          {
+          case 0x1e: return "iu"; /* syllabic */
+          case SUBLANG_INUKTITUT_CANADA: return "iu_CA"; /* syllabic */
+          case 0x1f: return "iu@latin";
+          case SUBLANG_INUKTITUT_CANADA_LATIN: return "iu_CA@latin";
+          }
+        return "iu";
+      case LANG_ITALIAN:
+        switch (sub)
+          {
+          case SUBLANG_ITALIAN: return "it_IT";
+          case SUBLANG_ITALIAN_SWISS: return "it_CH";
+          }
+        return "it";
+      case LANG_JAPANESE:
+        switch (sub)
+          {
+          case SUBLANG_JAPANESE_JAPAN: return "ja_JP";
+          }
+        return "ja";
+      case LANG_KANNADA:
+        switch (sub)
+          {
+          case SUBLANG_KANNADA_INDIA: return "kn_IN";
+          }
+        return "kn";
+      case LANG_KANURI:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "kr_NG";
+          }
+        return "kr";
+      case LANG_KASHMIRI:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "ks_PK";
+          case SUBLANG_KASHMIRI_INDIA: return "ks_IN";
+          }
+        return "ks";
+      case LANG_KAZAK:
+        switch (sub)
+          {
+          case SUBLANG_KAZAK_KAZAKHSTAN: return "kk_KZ";
+          }
+        return "kk";
+      case LANG_KICHE:
+        /* FIXME: Adjust this when such locales appear on Unix.  */
+        switch (sub)
+          {
+          case SUBLANG_KICHE_GUATEMALA: return "qut_GT";
+          }
+        return "qut";
+      case LANG_KINYARWANDA:
+        switch (sub)
+          {
+          case SUBLANG_KINYARWANDA_RWANDA: return "rw_RW";
+          }
+        return "rw";
+      case LANG_KONKANI:
+        /* FIXME: Adjust this when such locales appear on Unix.  */
+        switch (sub)
+          {
+          case SUBLANG_KONKANI_INDIA: return "kok_IN";
+          }
+        return "kok";
+      case LANG_KOREAN:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "ko_KR";
+          }
+        return "ko";
+      case LANG_KYRGYZ:
+        switch (sub)
+          {
+          case SUBLANG_KYRGYZ_KYRGYZSTAN: return "ky_KG";
+          }
+        return "ky";
+      case LANG_LAO:
+        switch (sub)
+          {
+          case SUBLANG_LAO_LAOS: return "lo_LA";
+          }
+        return "lo";
+      case LANG_LATIN:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "la_VA";
+          }
+        return "la";
+      case LANG_LATVIAN:
+        switch (sub)
+          {
+          case SUBLANG_LATVIAN_LATVIA: return "lv_LV";
+          }
+        return "lv";
+      case LANG_LITHUANIAN:
+        switch (sub)
+          {
+          case SUBLANG_LITHUANIAN_LITHUANIA: return "lt_LT";
+          }
+        return "lt";
+      case LANG_LUXEMBOURGISH:
+        switch (sub)
+          {
+          case SUBLANG_LUXEMBOURGISH_LUXEMBOURG: return "lb_LU";
+          }
+        return "lb";
+      case LANG_MACEDONIAN:
+        switch (sub)
+          {
+          case SUBLANG_MACEDONIAN_MACEDONIA: return "mk_MK";
+          }
+        return "mk";
+      case LANG_MALAY:
+        switch (sub)
+          {
+          case SUBLANG_MALAY_MALAYSIA: return "ms_MY";
+          case SUBLANG_MALAY_BRUNEI_DARUSSALAM: return "ms_BN";
+          }
+        return "ms";
+      case LANG_MALAYALAM:
+        switch (sub)
+          {
+          case SUBLANG_MALAYALAM_INDIA: return "ml_IN";
+          }
+        return "ml";
+      case LANG_MALTESE:
+        switch (sub)
+          {
+          case SUBLANG_MALTESE_MALTA: return "mt_MT";
+          }
+        return "mt";
+      case LANG_MANIPURI:
+        /* FIXME: Adjust this when such locales appear on Unix.  */
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "mni_IN";
+          }
+        return "mni";
+      case LANG_MAORI:
+        switch (sub)
+          {
+          case SUBLANG_MAORI_NEW_ZEALAND: return "mi_NZ";
+          }
+        return "mi";
+      case LANG_MAPUDUNGUN:
+        switch (sub)
+          {
+          case SUBLANG_MAPUDUNGUN_CHILE: return "arn_CL";
+          }
+        return "arn";
+      case LANG_MARATHI:
+        switch (sub)
+          {
+          case SUBLANG_MARATHI_INDIA: return "mr_IN";
+          }
+        return "mr";
+      case LANG_MOHAWK:
+        switch (sub)
+          {
+          case SUBLANG_MOHAWK_CANADA: return "moh_CA";
+          }
+        return "moh";
+      case LANG_MONGOLIAN:
+        switch (sub)
+          {
+          case SUBLANG_MONGOLIAN_CYRILLIC_MONGOLIA: case 0x1e: return "mn_MN";
+          case SUBLANG_MONGOLIAN_PRC: case 0x1f: return "mn_CN";
+          }
+        return "mn"; /* Ambiguous: could be "mn_CN" or "mn_MN".  */
+      case LANG_NEPALI:
+        switch (sub)
+          {
+          case SUBLANG_NEPALI_NEPAL: return "ne_NP";
+          case SUBLANG_NEPALI_INDIA: return "ne_IN";
+          }
+        return "ne";
+      case LANG_NORWEGIAN:
+        switch (sub)
+          {
+          case 0x1f: return "nb";
+          case SUBLANG_NORWEGIAN_BOKMAL: return "nb_NO";
+          case 0x1e: return "nn";
+          case SUBLANG_NORWEGIAN_NYNORSK: return "nn_NO";
+          }
+        return "no";
+      case LANG_OCCITAN:
+        switch (sub)
+          {
+          case SUBLANG_OCCITAN_FRANCE: return "oc_FR";
+          }
+        return "oc";
+      case LANG_ORIYA:
+        switch (sub)
+          {
+          case SUBLANG_ORIYA_INDIA: return "or_IN";
+          }
+        return "or";
+      case LANG_OROMO:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "om_ET";
+          }
+        return "om";
+      case LANG_PAPIAMENTU:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "pap_AN";
+          }
+        return "pap";
+      case LANG_PASHTO:
+        switch (sub)
+          {
+          case SUBLANG_PASHTO_AFGHANISTAN: return "ps_AF";
+          }
+        return "ps"; /* Ambiguous: could be "ps_PK" or "ps_AF".  */
+      case LANG_POLISH:
+        switch (sub)
+          {
+          case SUBLANG_POLISH_POLAND: return "pl_PL";
+          }
+        return "pl";
+      case LANG_PORTUGUESE:
+        switch (sub)
+          {
+          /* Hmm. SUBLANG_PORTUGUESE_BRAZILIAN == SUBLANG_DEFAULT.
+             Same phenomenon as SUBLANG_ENGLISH_US == SUBLANG_DEFAULT. */
+          case SUBLANG_PORTUGUESE_BRAZILIAN: return "pt_BR";
+          case SUBLANG_PORTUGUESE: return "pt_PT";
+          }
+        return "pt";
+      case LANG_PUNJABI:
+        switch (sub)
+          {
+          case SUBLANG_PUNJABI_INDIA: return "pa_IN"; /* Gurmukhi script */
+          case SUBLANG_PUNJABI_PAKISTAN: return "pa_PK"; /* Arabic script */
+          }
+        return "pa";
+      case LANG_QUECHUA:
+        /* Note: Microsoft uses the non-ISO language code "quz".  */
+        switch (sub)
+          {
+          case SUBLANG_QUECHUA_BOLIVIA: return "qu_BO";
+          case SUBLANG_QUECHUA_ECUADOR: return "qu_EC";
+          case SUBLANG_QUECHUA_PERU: return "qu_PE";
+          }
+        return "qu";
+      case LANG_ROMANIAN:
+        switch (sub)
+          {
+          case SUBLANG_ROMANIAN_ROMANIA: return "ro_RO";
+          case SUBLANG_ROMANIAN_MOLDOVA: return "ro_MD";
+          }
+        return "ro";
+      case LANG_ROMANSH:
+        switch (sub)
+          {
+          case SUBLANG_ROMANSH_SWITZERLAND: return "rm_CH";
+          }
+        return "rm";
+      case LANG_RUSSIAN:
+        switch (sub)
+          {
+          case SUBLANG_RUSSIAN_RUSSIA: return "ru_RU";
+          case SUBLANG_RUSSIAN_MOLDAVIA: return "ru_MD";
+          }
+        return "ru"; /* Ambiguous: could be "ru_RU" or "ru_UA" or "ru_MD".  */
+      case LANG_SAMI:
+        switch (sub)
+          {
+          /* Northern Sami */
+          case 0x00: return "se";
+          case SUBLANG_SAMI_NORTHERN_NORWAY: return "se_NO";
+          case SUBLANG_SAMI_NORTHERN_SWEDEN: return "se_SE";
+          case SUBLANG_SAMI_NORTHERN_FINLAND: return "se_FI";
+          /* Lule Sami */
+          case 0x1f: return "smj";
+          case SUBLANG_SAMI_LULE_NORWAY: return "smj_NO";
+          case SUBLANG_SAMI_LULE_SWEDEN: return "smj_SE";
+          /* Southern Sami */
+          case 0x1e: return "sma";
+          case SUBLANG_SAMI_SOUTHERN_NORWAY: return "sma_NO";
+          case SUBLANG_SAMI_SOUTHERN_SWEDEN: return "sma_SE";
+          /* Skolt Sami */
+          case 0x1d: return "sms";
+          case SUBLANG_SAMI_SKOLT_FINLAND: return "sms_FI";
+          /* Inari Sami */
+          case 0x1c: return "smn";
+          case SUBLANG_SAMI_INARI_FINLAND: return "smn_FI";
+          }
+        return "se"; /* or "smi"? */
+      case LANG_SANSKRIT:
+        switch (sub)
+          {
+          case SUBLANG_SANSKRIT_INDIA: return "sa_IN";
+          }
+        return "sa";
+      case LANG_SCOTTISH_GAELIC:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "gd_GB";
+          }
+        return "gd";
+      case LANG_SINDHI:
+        switch (sub)
+          {
+          case SUBLANG_SINDHI_INDIA: return "sd_IN";
+          case SUBLANG_SINDHI_PAKISTAN: return "sd_PK";
+          /*case SUBLANG_SINDHI_AFGHANISTAN: return "sd_AF";*/
+          }
+        return "sd";
+      case LANG_SINHALESE:
+        switch (sub)
+          {
+          case SUBLANG_SINHALESE_SRI_LANKA: return "si_LK";
+          }
+        return "si";
+      case LANG_SLOVAK:
+        switch (sub)
+          {
+          case SUBLANG_SLOVAK_SLOVAKIA: return "sk_SK";
+          }
+        return "sk";
+      case LANG_SLOVENIAN:
+        switch (sub)
+          {
+          case SUBLANG_SLOVENIAN_SLOVENIA: return "sl_SI";
+          }
+        return "sl";
+      case LANG_SOMALI:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "so_SO";
+          }
+        return "so";
+      case LANG_SORBIAN:
+        /* FIXME: Adjust this when such locales appear on Unix.  */
+        switch (sub)
+          {
+          /* Upper Sorbian */
+          case 0x00: return "hsb";
+          case SUBLANG_UPPER_SORBIAN_GERMANY: return "hsb_DE";
+          /* Lower Sorbian */
+          case 0x1f: return "dsb";
+          case SUBLANG_LOWER_SORBIAN_GERMANY: return "dsb_DE";
+          }
+        return "wen";
+      case LANG_SOTHO:
+        /* <https://docs.microsoft.com/en-us/windows/desktop/Intl/language-identifier-constants-and-strings>
+           calls it "Sesotho sa Leboa"; according to
+           <https://www.ethnologue.com/show_language.asp?code=nso>
+           <https://www.ethnologue.com/show_language.asp?code=sot>
+           it's the same as Northern Sotho.  */
+        switch (sub)
+          {
+          case SUBLANG_SOTHO_SOUTH_AFRICA: return "nso_ZA";
+          }
+        return "nso";
+      case LANG_SPANISH:
+        switch (sub)
+          {
+          case SUBLANG_SPANISH: return "es_ES";
+          case SUBLANG_SPANISH_MEXICAN: return "es_MX";
+          case SUBLANG_SPANISH_MODERN:
+            return "es_ES@modern";      /* not seen on Unix */
+          case SUBLANG_SPANISH_GUATEMALA: return "es_GT";
+          case SUBLANG_SPANISH_COSTA_RICA: return "es_CR";
+          case SUBLANG_SPANISH_PANAMA: return "es_PA";
+          case SUBLANG_SPANISH_DOMINICAN_REPUBLIC: return "es_DO";
+          case SUBLANG_SPANISH_VENEZUELA: return "es_VE";
+          case SUBLANG_SPANISH_COLOMBIA: return "es_CO";
+          case SUBLANG_SPANISH_PERU: return "es_PE";
+          case SUBLANG_SPANISH_ARGENTINA: return "es_AR";
+          case SUBLANG_SPANISH_ECUADOR: return "es_EC";
+          case SUBLANG_SPANISH_CHILE: return "es_CL";
+          case SUBLANG_SPANISH_URUGUAY: return "es_UY";
+          case SUBLANG_SPANISH_PARAGUAY: return "es_PY";
+          case SUBLANG_SPANISH_BOLIVIA: return "es_BO";
+          case SUBLANG_SPANISH_EL_SALVADOR: return "es_SV";
+          case SUBLANG_SPANISH_HONDURAS: return "es_HN";
+          case SUBLANG_SPANISH_NICARAGUA: return "es_NI";
+          case SUBLANG_SPANISH_PUERTO_RICO: return "es_PR";
+          case SUBLANG_SPANISH_US: return "es_US";
+          }
+        return "es";
+      case LANG_SUTU:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "bnt_TZ"; /* or "st_LS" or "nso_ZA"? */
+          }
+        return "bnt";
+      case LANG_SWAHILI:
+        switch (sub)
+          {
+          case SUBLANG_SWAHILI_KENYA: return "sw_KE";
+          }
+        return "sw";
+      case LANG_SWEDISH:
+        switch (sub)
+          {
+          case SUBLANG_SWEDISH_SWEDEN: return "sv_SE";
+          case SUBLANG_SWEDISH_FINLAND: return "sv_FI";
+          }
+        return "sv";
+      case LANG_SYRIAC:
+        switch (sub)
+          {
+          case SUBLANG_SYRIAC_SYRIA: return "syr_SY"; /* An extinct language.  */
+          }
+        return "syr";
+      case LANG_TAGALOG:
+        switch (sub)
+          {
+          case SUBLANG_TAGALOG_PHILIPPINES: return "tl_PH"; /* or "fil_PH"? */
+          }
+        return "tl"; /* or "fil"? */
+      case LANG_TAJIK:
+        switch (sub)
+          {
+          case 0x1f: return "tg";
+          case SUBLANG_TAJIK_TAJIKISTAN: return "tg_TJ";
+          }
+        return "tg";
+      case LANG_TAMAZIGHT:
+        /* Note: Microsoft uses the non-ISO language code "tmz".  */
+        switch (sub)
+          {
+          /* FIXME: Adjust this when Tamazight locales appear on Unix.  */
+          case SUBLANG_TAMAZIGHT_ARABIC: return "ber_MA@arabic";
+          case 0x1f: return "ber@latin";
+          case SUBLANG_TAMAZIGHT_ALGERIA_LATIN: return "ber_DZ@latin";
+          }
+        return "ber";
+      case LANG_TAMIL:
+        switch (sub)
+          {
+          case SUBLANG_TAMIL_INDIA: return "ta_IN";
+          }
+        return "ta"; /* Ambiguous: could be "ta_IN" or "ta_LK" or "ta_SG".  */
+      case LANG_TATAR:
+        switch (sub)
+          {
+          case SUBLANG_TATAR_RUSSIA: return "tt_RU";
+          }
+        return "tt";
+      case LANG_TELUGU:
+        switch (sub)
+          {
+          case SUBLANG_TELUGU_INDIA: return "te_IN";
+          }
+        return "te";
+      case LANG_THAI:
+        switch (sub)
+          {
+          case SUBLANG_THAI_THAILAND: return "th_TH";
+          }
+        return "th";
+      case LANG_TIBETAN:
+        switch (sub)
+          {
+          case SUBLANG_TIBETAN_PRC:
+            /* Most Tibetans would not like "bo_CN".  But Tibet does not yet
+               have a country code of its own.  */
+            return "bo";
+          case SUBLANG_TIBETAN_BHUTAN: return "bo_BT";
+          }
+        return "bo";
+      case LANG_TIGRINYA:
+        switch (sub)
+          {
+          case SUBLANG_TIGRINYA_ETHIOPIA: return "ti_ET";
+          case SUBLANG_TIGRINYA_ERITREA: return "ti_ER";
+          }
+        return "ti";
+      case LANG_TSONGA:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "ts_ZA";
+          }
+        return "ts";
+      case LANG_TSWANA:
+        /* Spoken in South Africa, Botswana.  */
+        switch (sub)
+          {
+          case SUBLANG_TSWANA_SOUTH_AFRICA: return "tn_ZA";
+          }
+        return "tn";
+      case LANG_TURKISH:
+        switch (sub)
+          {
+          case SUBLANG_TURKISH_TURKEY: return "tr_TR";
+          }
+        return "tr";
+      case LANG_TURKMEN:
+        switch (sub)
+          {
+          case SUBLANG_TURKMEN_TURKMENISTAN: return "tk_TM";
+          }
+        return "tk";
+      case LANG_UIGHUR:
+        switch (sub)
+          {
+          case SUBLANG_UIGHUR_PRC: return "ug_CN";
+          }
+        return "ug";
+      case LANG_UKRAINIAN:
+        switch (sub)
+          {
+          case SUBLANG_UKRAINIAN_UKRAINE: return "uk_UA";
+          }
+        return "uk";
+      case LANG_URDU:
+        switch (sub)
+          {
+          case SUBLANG_URDU_PAKISTAN: return "ur_PK";
+          case SUBLANG_URDU_INDIA: return "ur_IN";
+          }
+        return "ur";
+      case LANG_UZBEK:
+        switch (sub)
+          {
+          case 0x1f: return "uz";
+          case SUBLANG_UZBEK_LATIN: return "uz_UZ";
+          case 0x1e: return "uz@cyrillic";
+          case SUBLANG_UZBEK_CYRILLIC: return "uz_UZ@cyrillic";
+          }
+        return "uz";
+      case LANG_VENDA:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "ve_ZA";
+          }
+        return "ve";
+      case LANG_VIETNAMESE:
+        switch (sub)
+          {
+          case SUBLANG_VIETNAMESE_VIETNAM: return "vi_VN";
+          }
+        return "vi";
+      case LANG_WELSH:
+        switch (sub)
+          {
+          case SUBLANG_WELSH_UNITED_KINGDOM: return "cy_GB";
+          }
+        return "cy";
+      case LANG_WOLOF:
+        switch (sub)
+          {
+          case SUBLANG_WOLOF_SENEGAL: return "wo_SN";
+          }
+        return "wo";
+      case LANG_XHOSA:
+        switch (sub)
+          {
+          case SUBLANG_XHOSA_SOUTH_AFRICA: return "xh_ZA";
+          }
+        return "xh";
+      case LANG_YAKUT:
+        switch (sub)
+          {
+          case SUBLANG_YAKUT_RUSSIA: return "sah_RU";
+          }
+        return "sah";
+      case LANG_YI:
+        switch (sub)
+          {
+          case SUBLANG_YI_PRC: return "ii_CN";
+          }
+        return "ii";
+      case LANG_YIDDISH:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "yi_IL";
+          }
+        return "yi";
+      case LANG_YORUBA:
+        switch (sub)
+          {
+          case SUBLANG_YORUBA_NIGERIA: return "yo_NG";
+          }
+        return "yo";
+      case LANG_ZULU:
+        switch (sub)
+          {
+          case SUBLANG_ZULU_SOUTH_AFRICA: return "zu_ZA";
+          }
+        return "zu";
+      default: return "C";
+      }
+  }
+}
+
+# if !defined IN_LIBINTL
+static
+# endif
+const char *
+gl_locale_name_from_win32_LCID (LCID lcid)
+{
+  LANGID langid;
+
+  /* Strip off the sorting rules, keep only the language part.  */
+  langid = LANGIDFROMLCID (lcid);
+
+  return gl_locale_name_from_win32_LANGID (langid);
+}
+
+# ifdef WINDOWS_NATIVE
+
+/* Two variables to interface between get_lcid and the EnumLocales
+   callback function below.  */
+static LCID found_lcid;
+static char lname[LC_MAX * (LOCALE_NAME_MAX_LENGTH + 1) + 1];
+
+/* Callback function for EnumLocales.  */
+static BOOL CALLBACK
+enum_locales_fn (LPTSTR locale_num_str)
+{
+  char *endp;
+  char locval[2 * LOCALE_NAME_MAX_LENGTH + 1 + 1];
+  LCID try_lcid = strtoul (locale_num_str, &endp, 16);
+
+  if (GetLocaleInfo (try_lcid, LOCALE_SENGLANGUAGE,
+                    locval, LOCALE_NAME_MAX_LENGTH))
+    {
+      strcat (locval, "_");
+      if (GetLocaleInfo (try_lcid, LOCALE_SENGCOUNTRY,
+                        locval + strlen (locval), LOCALE_NAME_MAX_LENGTH))
+       {
+         size_t locval_len = strlen (locval);
+
+         if (strncmp (locval, lname, locval_len) == 0
+             && (lname[locval_len] == '.'
+                 || lname[locval_len] == '\0'))
+           {
+             found_lcid = try_lcid;
+             return FALSE;
+           }
+       }
+    }
+  return TRUE;
+}
+
+/* This lock protects the get_lcid against multiple simultaneous calls.  */
+gl_lock_define_initialized(static, get_lcid_lock)
+
+/* Return the Locale ID (LCID) number given the locale's name, a
+   string, in LOCALE_NAME.  This works by enumerating all the locales
+   supported by the system, until we find one whose name matches
+   LOCALE_NAME.  */
+static LCID
+get_lcid (const char *locale_name)
+{
+  /* A simple cache.  */
+  static LCID last_lcid;
+  static char last_locale[1000];
+
+  /* Lock while looking for an LCID, to protect access to static
+     variables: last_lcid, last_locale, found_lcid, and lname.  */
+  gl_lock_lock (get_lcid_lock);
+  if (last_lcid > 0 && strcmp (locale_name, last_locale) == 0)
+    {
+      gl_lock_unlock (get_lcid_lock);
+      return last_lcid;
+    }
+  strncpy (lname, locale_name, sizeof (lname) - 1);
+  lname[sizeof (lname) - 1] = '\0';
+  found_lcid = 0;
+  EnumSystemLocales (enum_locales_fn, LCID_SUPPORTED);
+  if (found_lcid > 0)
+    {
+      last_lcid = found_lcid;
+      strcpy (last_locale, locale_name);
+    }
+  gl_lock_unlock (get_lcid_lock);
+  return found_lcid;
+}
+
+# endif
+#endif
+
+
+#if HAVE_GOOD_USELOCALE /* glibc, Mac OS X, FreeBSD >= 9.1, Cygwin >= 2.6,
+                           Solaris 11 OpenIndiana, or Solaris >= 11.4  */
+
+/* Simple hash set of strings.  We don't want to drag in lots of hash table
+   code here.  */
+
+# define SIZE_BITS (sizeof (size_t) * CHAR_BIT)
+
+/* A hash function for NUL-terminated char* strings using
+   the method described by Bruno Haible.
+   See https://www.haible.de/bruno/hashfunc.html.  */
+static size_t _GL_ATTRIBUTE_PURE
+string_hash (const void *x)
+{
+  const char *s = (const char *) x;
+  size_t h = 0;
+
+  for (; *s; s++)
+    h = *s + ((h << 9) | (h >> (SIZE_BITS - 9)));
+
+  return h;
+}
+
+/* A hash table of fixed size.  Multiple threads can access it read-only
+   simultaneously, but only one thread can insert into it at the same time.  */
+
+/* A node in a hash bucket collision list.  */
+struct struniq_hash_node
+  {
+    struct struniq_hash_node * volatile next;
+    char contents[FLEXIBLE_ARRAY_MEMBER];
+  };
+
+# define STRUNIQ_HASH_TABLE_SIZE 257
+static struct struniq_hash_node * volatile struniq_hash_table[STRUNIQ_HASH_TABLE_SIZE]
+  /* = { NULL, ..., NULL } */;
+
+/* This lock protects the struniq_hash_table against multiple simultaneous
+   insertions.  */
+gl_lock_define_initialized(static, struniq_lock)
+
+/* Store a copy of the given string in a string pool with indefinite extent.
+   Return a pointer to this copy.  */
+static const char *
+struniq (const char *string)
+{
+  size_t hashcode = string_hash (string);
+  size_t slot = hashcode % STRUNIQ_HASH_TABLE_SIZE;
+  size_t size;
+  struct struniq_hash_node *new_node;
+  struct struniq_hash_node *p;
+  for (p = struniq_hash_table[slot]; p != NULL; p = p->next)
+    if (strcmp (p->contents, string) == 0)
+      return p->contents;
+  size = strlen (string) + 1;
+  new_node =
+    (struct struniq_hash_node *)
+    malloc (FLEXSIZEOF (struct struniq_hash_node, contents, size));
+  if (new_node == NULL)
+    /* Out of memory.  Return a statically allocated string.  */
+    return "C";
+  memcpy (new_node->contents, string, size);
+  /* Lock while inserting new_node.  */
+  gl_lock_lock (struniq_lock);
+  /* Check whether another thread already added the string while we were
+     waiting on the lock.  */
+  for (p = struniq_hash_table[slot]; p != NULL; p = p->next)
+    if (strcmp (p->contents, string) == 0)
+      {
+        free (new_node);
+        new_node = p;
+        goto done;
+      }
+  /* Really insert new_node into the hash table.  Fill new_node entirely first,
+     because other threads may be iterating over the linked list.  */
+  new_node->next = struniq_hash_table[slot];
+  struniq_hash_table[slot] = new_node;
+ done:
+  /* Unlock after new_node is inserted.  */
+  gl_lock_unlock (struniq_lock);
+  return new_node->contents;
+}
+
+#endif
+
+
+#if HAVE_GOOD_USELOCALE && HAVE_NAMELESS_LOCALES
+
+/* The 'locale_t' object does not contain the names of the locale categories.
+   We have to associate them with the object through a hash table.
+   The hash table is defined in localename-table.[hc].  */
+
+/* Returns the name of a given locale category in a given locale_t object,
+   allocated as a string with indefinite extent.  */
+static const char *
+get_locale_t_name (int category, locale_t locale)
+{
+  if (locale == LC_GLOBAL_LOCALE)
+    {
+      /* Query the global locale.  */
+      const char *name = setlocale_null (category);
+      if (name != NULL)
+        return struniq (name);
+      else
+        /* Should normally not happen.  */
+        return "";
+    }
+  else
+    {
+      /* Look up the names in the hash table.  */
+      size_t hashcode = locale_hash_function (locale);
+      size_t slot = hashcode % LOCALE_HASH_TABLE_SIZE;
+      /* If the locale was not found in the table, return "".  This can
+         happen if the application uses the original newlocale()/duplocale()
+         functions instead of the overridden ones.  */
+      const char *name = "";
+      struct locale_hash_node *p;
+      /* Lock while looking up the hash node.  */
+      gl_rwlock_rdlock (locale_lock);
+      for (p = locale_hash_table[slot]; p != NULL; p = p->next)
+        if (p->locale == locale)
+          {
+            name = p->names.category_name[category];
+            break;
+          }
+      gl_rwlock_unlock (locale_lock);
+      return name;
+    }
+}
+
+# if !(defined newlocale && defined duplocale && defined freelocale)
+#  error "newlocale, duplocale, freelocale not being replaced as expected!"
+# endif
+
+/* newlocale() override.  */
+locale_t
+newlocale (int category_mask, const char *name, locale_t base)
+#undef newlocale
+{
+  struct locale_categories_names names;
+  struct locale_hash_node *node;
+  locale_t result;
+
+  /* Make sure name has indefinite extent.  */
+  if (((LC_CTYPE_MASK | LC_NUMERIC_MASK | LC_TIME_MASK | LC_COLLATE_MASK
+        | LC_MONETARY_MASK | LC_MESSAGES_MASK)
+       & category_mask) != 0)
+    name = struniq (name);
+
+  /* Determine the category names of the result.  */
+  if (((LC_CTYPE_MASK | LC_NUMERIC_MASK | LC_TIME_MASK | LC_COLLATE_MASK
+        | LC_MONETARY_MASK | LC_MESSAGES_MASK)
+       & ~category_mask) == 0)
+    {
+      /* Use name, ignore base.  */
+      int category;
+
+      name = struniq (name);
+      for (category = 0; category < 6; category++)
+        names.category_name[category] = name;
+    }
+  else
+    {
+      /* Use base, possibly also name.  */
+      if (base == NULL)
+        {
+          int category;
+
+          for (category = 0; category < 6; category++)
+            {
+              int mask;
+
+              switch (category)
+                {
+                case LC_CTYPE:
+                  mask = LC_CTYPE_MASK;
+                  break;
+                case LC_NUMERIC:
+                  mask = LC_NUMERIC_MASK;
+                  break;
+                case LC_TIME:
+                  mask = LC_TIME_MASK;
+                  break;
+                case LC_COLLATE:
+                  mask = LC_COLLATE_MASK;
+                  break;
+                case LC_MONETARY:
+                  mask = LC_MONETARY_MASK;
+                  break;
+                case LC_MESSAGES:
+                  mask = LC_MESSAGES_MASK;
+                  break;
+                default:
+                  abort ();
+                }
+              names.category_name[category] =
+                ((mask & category_mask) != 0 ? name : "C");
+            }
+        }
+      else if (base == LC_GLOBAL_LOCALE)
+        {
+          int category;
+
+          for (category = 0; category < 6; category++)
+            {
+              int mask;
+
+              switch (category)
+                {
+                case LC_CTYPE:
+                  mask = LC_CTYPE_MASK;
+                  break;
+                case LC_NUMERIC:
+                  mask = LC_NUMERIC_MASK;
+                  break;
+                case LC_TIME:
+                  mask = LC_TIME_MASK;
+                  break;
+                case LC_COLLATE:
+                  mask = LC_COLLATE_MASK;
+                  break;
+                case LC_MONETARY:
+                  mask = LC_MONETARY_MASK;
+                  break;
+                case LC_MESSAGES:
+                  mask = LC_MESSAGES_MASK;
+                  break;
+                default:
+                  abort ();
+                }
+              names.category_name[category] =
+                ((mask & category_mask) != 0
+                 ? name
+                 : get_locale_t_name (category, LC_GLOBAL_LOCALE));
+            }
+        }
+      else
+        {
+          /* Look up the names of base in the hash table.  Like multiple calls
+             of get_locale_t_name, but locking only once.  */
+          struct locale_hash_node *p;
+          int category;
+
+          /* Lock while looking up the hash node.  */
+          gl_rwlock_rdlock (locale_lock);
+          for (p = locale_hash_table[locale_hash_function (base) % LOCALE_HASH_TABLE_SIZE];
+               p != NULL;
+               p = p->next)
+            if (p->locale == base)
+              break;
+
+          for (category = 0; category < 6; category++)
+            {
+              int mask;
+
+              switch (category)
+                {
+                case LC_CTYPE:
+                  mask = LC_CTYPE_MASK;
+                  break;
+                case LC_NUMERIC:
+                  mask = LC_NUMERIC_MASK;
+                  break;
+                case LC_TIME:
+                  mask = LC_TIME_MASK;
+                  break;
+                case LC_COLLATE:
+                  mask = LC_COLLATE_MASK;
+                  break;
+                case LC_MONETARY:
+                  mask = LC_MONETARY_MASK;
+                  break;
+                case LC_MESSAGES:
+                  mask = LC_MESSAGES_MASK;
+                  break;
+                default:
+                  abort ();
+                }
+              names.category_name[category] =
+                ((mask & category_mask) != 0
+                 ? name
+                 : (p != NULL ? p->names.category_name[category] : ""));
+            }
+
+          gl_rwlock_unlock (locale_lock);
+        }
+    }
+
+  node = (struct locale_hash_node *) malloc (sizeof (struct locale_hash_node));
+  if (node == NULL)
+    /* errno is set to ENOMEM.  */
+    return NULL;
+
+  result = newlocale (category_mask, name, base);
+  if (result == NULL)
+    {
+      int saved_errno = errno;
+      free (node);
+      errno = saved_errno;
+      return NULL;
+    }
+
+  /* Fill the hash node.  */
+  node->locale = result;
+  node->names = names;
+
+  /* Insert it in the hash table.  */
+  {
+    size_t hashcode = locale_hash_function (result);
+    size_t slot = hashcode % LOCALE_HASH_TABLE_SIZE;
+    struct locale_hash_node *p;
+
+    /* Lock while inserting the new node.  */
+    gl_rwlock_wrlock (locale_lock);
+    for (p = locale_hash_table[slot]; p != NULL; p = p->next)
+      if (p->locale == result)
+        {
+          /* This can happen if the application uses the original freelocale()
+             function instead of the overridden one.  */
+          p->names = node->names;
+          break;
+        }
+    if (p == NULL)
+      {
+        node->next = locale_hash_table[slot];
+        locale_hash_table[slot] = node;
+      }
+
+    gl_rwlock_unlock (locale_lock);
+
+    if (p != NULL)
+      free (node);
+  }
+
+  return result;
+}
+
+/* duplocale() override.  */
+locale_t
+duplocale (locale_t locale)
+#undef duplocale
+{
+  struct locale_hash_node *node;
+  locale_t result;
+
+  if (locale == NULL)
+    /* Invalid argument.  */
+    abort ();
+
+  node = (struct locale_hash_node *) malloc (sizeof (struct locale_hash_node));
+  if (node == NULL)
+    /* errno is set to ENOMEM.  */
+    return NULL;
+
+  result = duplocale (locale);
+  if (result == NULL)
+    {
+      int saved_errno = errno;
+      free (node);
+      errno = saved_errno;
+      return NULL;
+    }
+
+  /* Fill the hash node.  */
+  node->locale = result;
+  if (locale == LC_GLOBAL_LOCALE)
+    {
+      int category;
+
+      for (category = 0; category < 6; category++)
+        node->names.category_name[category] =
+          get_locale_t_name (category, LC_GLOBAL_LOCALE);
+
+      /* Lock before inserting the new node.  */
+      gl_rwlock_wrlock (locale_lock);
+    }
+  else
+    {
+      struct locale_hash_node *p;
+
+      /* Lock once, for the lookup and the insertion.  */
+      gl_rwlock_wrlock (locale_lock);
+
+      for (p = locale_hash_table[locale_hash_function (locale) % LOCALE_HASH_TABLE_SIZE];
+           p != NULL;
+           p = p->next)
+        if (p->locale == locale)
+          break;
+      if (p != NULL)
+        node->names = p->names;
+      else
+        {
+          /* This can happen if the application uses the original
+             newlocale()/duplocale() functions instead of the overridden
+             ones.  */
+          int category;
+
+          for (category = 0; category < 6; category++)
+            node->names.category_name[category] = "";
+        }
+    }
+
+  /* Insert it in the hash table.  */
+  {
+    size_t hashcode = locale_hash_function (result);
+    size_t slot = hashcode % LOCALE_HASH_TABLE_SIZE;
+    struct locale_hash_node *p;
+
+    for (p = locale_hash_table[slot]; p != NULL; p = p->next)
+      if (p->locale == result)
+        {
+          /* This can happen if the application uses the original freelocale()
+             function instead of the overridden one.  */
+          p->names = node->names;
+          break;
+        }
+    if (p == NULL)
+      {
+        node->next = locale_hash_table[slot];
+        locale_hash_table[slot] = node;
+      }
+
+    gl_rwlock_unlock (locale_lock);
+
+    if (p != NULL)
+      free (node);
+  }
+
+  return result;
+}
+
+/* freelocale() override.  */
+void
+freelocale (locale_t locale)
+#undef freelocale
+{
+  if (locale == NULL || locale == LC_GLOBAL_LOCALE)
+    /* Invalid argument.  */
+    abort ();
+
+  {
+    size_t hashcode = locale_hash_function (locale);
+    size_t slot = hashcode % LOCALE_HASH_TABLE_SIZE;
+    struct locale_hash_node *found;
+    struct locale_hash_node **p;
+
+    found = NULL;
+    /* Lock while removing the hash node.  */
+    gl_rwlock_wrlock (locale_lock);
+    for (p = &locale_hash_table[slot]; *p != NULL; p = &(*p)->next)
+      if ((*p)->locale == locale)
+        {
+          found = *p;
+          *p = (*p)->next;
+          break;
+        }
+    gl_rwlock_unlock (locale_lock);
+    free (found);
+  }
+
+  freelocale (locale);
+}
+
+#endif
+
+
+#if defined IN_LIBINTL || HAVE_GOOD_USELOCALE
+
+/* Like gl_locale_name_thread, except that the result is not in storage of
+   indefinite extent.  */
+# if !defined IN_LIBINTL
+static
+# endif
+const char *
+gl_locale_name_thread_unsafe (int category, const char *categoryname)
+{
+# if HAVE_GOOD_USELOCALE
+  {
+    locale_t thread_locale = uselocale (NULL);
+    if (thread_locale != LC_GLOBAL_LOCALE)
+      {
+#  if __GLIBC__ >= 2 && !defined __UCLIBC__
+        /* Work around an incorrect definition of the _NL_LOCALE_NAME macro in
+           glibc < 2.12.
+           See <https://sourceware.org/bugzilla/show_bug.cgi?id=10968>.  */
+        const char *name =
+          nl_langinfo (_NL_ITEM ((category), _NL_ITEM_INDEX (-1)));
+        if (name[0] == '\0')
+          /* Fallback code for glibc < 2.4, which did not implement
+             nl_langinfo (_NL_LOCALE_NAME (category)).  */
+          name = thread_locale->__names[category];
+        return name;
+#  elif defined __linux__ && HAVE_LANGINFO_H && defined NL_LOCALE_NAME
+        /* musl libc */
+        return nl_langinfo_l (NL_LOCALE_NAME (category), thread_locale);
+#  elif (defined __FreeBSD__ || defined __DragonFly__) || (defined __APPLE__ && defined __MACH__)
+        /* FreeBSD, Mac OS X */
+        int mask;
+
+        switch (category)
+          {
+          case LC_CTYPE:
+            mask = LC_CTYPE_MASK;
+            break;
+          case LC_NUMERIC:
+            mask = LC_NUMERIC_MASK;
+            break;
+          case LC_TIME:
+            mask = LC_TIME_MASK;
+            break;
+          case LC_COLLATE:
+            mask = LC_COLLATE_MASK;
+            break;
+          case LC_MONETARY:
+            mask = LC_MONETARY_MASK;
+            break;
+          case LC_MESSAGES:
+            mask = LC_MESSAGES_MASK;
+            break;
+          default: /* We shouldn't get here.  */
+            return "";
+          }
+        return querylocale (mask, thread_locale);
+#  elif defined __sun
+#   if HAVE_GETLOCALENAME_L
+        /* Solaris >= 12.  */
+        return getlocalename_l (category, thread_locale);
+#   elif HAVE_SOLARIS114_LOCALES
+        /* Solaris >= 11.4.  */
+        void *lcp = (*thread_locale)->core.data->lcp;
+        if (lcp != NULL)
+          switch (category)
+            {
+            case LC_CTYPE:
+            case LC_NUMERIC:
+            case LC_TIME:
+            case LC_COLLATE:
+            case LC_MONETARY:
+            case LC_MESSAGES:
+              return ((const char * const *) lcp)[category];
+            default: /* We shouldn't get here.  */
+              return "";
+            }
+#   elif HAVE_NAMELESS_LOCALES
+        return get_locale_t_name (category, thread_locale);
+#   else
+        /* Solaris 11 OpenIndiana.
+           For the internal structure of locale objects, see
+           https://github.com/OpenIndiana/illumos-gate/blob/master/usr/src/lib/libc/port/locale/localeimpl.h  */
+        switch (category)
+          {
+          case LC_CTYPE:
+          case LC_NUMERIC:
+          case LC_TIME:
+          case LC_COLLATE:
+          case LC_MONETARY:
+          case LC_MESSAGES:
+            return ((const char * const *) thread_locale)[category];
+          default: /* We shouldn't get here.  */
+            return "";
+          }
+#   endif
+#  elif defined _AIX && HAVE_NAMELESS_LOCALES
+        return get_locale_t_name (category, thread_locale);
+#  elif defined __CYGWIN__
+        /* Cygwin < 2.6 lacks uselocale and thread-local locales altogether.
+           Cygwin <= 2.6.1 lacks NL_LOCALE_NAME, requiring peeking inside
+           an opaque struct.  */
+#   ifdef NL_LOCALE_NAME
+        return nl_langinfo_l (NL_LOCALE_NAME (category), thread_locale);
+#   else
+        /* FIXME: Remove when we can assume new-enough Cygwin.  */
+        struct __locale_t {
+          char categories[7][32];
+        };
+        return ((struct __locale_t *) thread_locale)->categories[category];
+#   endif
+#  elif defined __ANDROID__
+        return MB_CUR_MAX == 4 ? "C.UTF-8" : "C";
+#  endif
+      }
+  }
+# endif
+  return NULL;
+}
+
+#endif
+
+const char *
+gl_locale_name_thread (int category, const char *categoryname)
+{
+#if HAVE_GOOD_USELOCALE
+  const char *name = gl_locale_name_thread_unsafe (category, categoryname);
+  if (name != NULL)
+    return struniq (name);
+#endif
+  /* On WINDOWS_NATIVE, don't use GetThreadLocale() here, because when
+     SetThreadLocale has not been called - which is a very frequent case -
+     the value of GetThreadLocale() ignores past calls to 'setlocale'.  */
+  return NULL;
+}
+
+/* XPG3 defines the result of 'setlocale (category, NULL)' as:
+   "Directs 'setlocale()' to query 'category' and return the current
+    setting of 'local'."
+   However it does not specify the exact format.  Neither do SUSV2 and
+   ISO C 99.  So we can use this feature only on selected systems (e.g.
+   those using GNU C Library).  */
+#if defined _LIBC || ((defined __GLIBC__ && __GLIBC__ >= 2) && !defined __UCLIBC__)
+# define HAVE_LOCALE_NULL
+#endif
+
+const char *
+gl_locale_name_posix (int category, const char *categoryname)
+{
+#if defined WINDOWS_NATIVE
+  if (LC_MIN <= category && category <= LC_MAX)
+    {
+      const char *locname =
+        /* setlocale_null (category) is identical to setlocale (category, NULL)
+           on this platform.  */
+        setlocale (category, NULL);
+
+      /* Convert locale name to LCID.  We don't want to use
+         LocaleNameToLCID because (a) it is only available since Vista,
+         and (b) it doesn't accept locale names returned by 'setlocale'.  */
+      LCID lcid = get_lcid (locname);
+
+      if (lcid > 0)
+        return gl_locale_name_from_win32_LCID (lcid);
+    }
+#endif
+  {
+    const char *locname;
+
+    /* Use the POSIX methods of looking to 'LC_ALL', 'LC_xxx', and 'LANG'.
+       On some systems this can be done by the 'setlocale' function itself.  */
+#if defined HAVE_LC_MESSAGES && defined HAVE_LOCALE_NULL
+    locname = setlocale_null (category);
+#else
+    /* On other systems we ignore what setlocale reports and instead look at the
+       environment variables directly.  This is necessary
+         1. on systems which have a facility for customizing the default locale
+            (Mac OS X, native Windows, Cygwin) and where the system's setlocale()
+            function ignores this default locale (Mac OS X, Cygwin), in two cases:
+            a. when the user missed to use the setlocale() override from libintl
+               (for example by not including <libintl.h>),
+            b. when setlocale supports only the "C" locale, such as on Cygwin
+               1.5.x.  In this case even the override from libintl cannot help.
+         2. on all systems where setlocale supports only the "C" locale.  */
+    /* Strictly speaking, it is a POSIX violation to look at the environment
+       variables regardless whether setlocale has been called or not.  POSIX
+       says:
+           "For C-language programs, the POSIX locale shall be the
+            default locale when the setlocale() function is not called."
+       But we assume that all programs that use internationalized APIs call
+       setlocale (LC_ALL, "").  */
+    locname = gl_locale_name_environ (category, categoryname);
+#endif
+    /* Convert the locale name from the format returned by setlocale() or found
+       in the environment variables to the XPG syntax.  */
+#if defined WINDOWS_NATIVE
+    if (locname != NULL)
+      {
+        /* Convert locale name to LCID.  We don't want to use
+           LocaleNameToLCID because (a) it is only available since Vista,
+           and (b) it doesn't accept locale names returned by 'setlocale'.  */
+        LCID lcid = get_lcid (locname);
+
+        if (lcid > 0)
+          return gl_locale_name_from_win32_LCID (lcid);
+      }
+#endif
+    return locname;
+  }
+}
+
+const char *
+gl_locale_name_environ (int category, const char *categoryname)
+{
+  const char *retval;
+
+  /* Setting of LC_ALL overrides all other.  */
+  retval = getenv ("LC_ALL");
+  if (retval != NULL && retval[0] != '\0')
+    return retval;
+  /* Next comes the name of the desired category.  */
+  retval = getenv (categoryname);
+  if (retval != NULL && retval[0] != '\0')
+    return retval;
+  /* Last possibility is the LANG environment variable.  */
+  retval = getenv ("LANG");
+  if (retval != NULL && retval[0] != '\0')
+    {
+#if HAVE_CFPREFERENCESCOPYAPPVALUE
+      /* Mac OS X 10.2 or newer.
+         Ignore invalid LANG value set by the Terminal application.  */
+      if (strcmp (retval, "UTF-8") != 0)
+#endif
+#if defined __CYGWIN__
+      /* Cygwin.
+         Ignore dummy LANG value set by ~/.profile.  */
+      if (strcmp (retval, "C.UTF-8") != 0)
+#endif
+        return retval;
+    }
+
+  return NULL;
+}
+
+const char *
+gl_locale_name_default (void)
+{
+  /* POSIX:2001 says:
+     "All implementations shall define a locale as the default locale, to be
+      invoked when no environment variables are set, or set to the empty
+      string.  This default locale can be the POSIX locale or any other
+      implementation-defined locale.  Some implementations may provide
+      facilities for local installation administrators to set the default
+      locale, customizing it for each location.  POSIX:2001 does not require
+      such a facility.
+
+     The systems with such a facility are Mac OS X and Windows: They provide a
+     GUI that allows the user to choose a locale.
+       - On Mac OS X, by default, none of LC_* or LANG are set.  Starting with
+         Mac OS X 10.4 or 10.5, LANG is set for processes launched by the
+         'Terminal' application (but sometimes to an incorrect value "UTF-8").
+         When no environment variable is set, setlocale (LC_ALL, "") uses the
+         "C" locale.
+       - On native Windows, by default, none of LC_* or LANG are set.
+         When no environment variable is set, setlocale (LC_ALL, "") uses the
+         locale chosen by the user.
+       - On Cygwin 1.5.x, by default, none of LC_* or LANG are set.
+         When no environment variable is set, setlocale (LC_ALL, "") uses the
+         "C" locale.
+       - On Cygwin 1.7, by default, LANG is set to "C.UTF-8" when the default
+         ~/.profile is executed.
+         When no environment variable is set, setlocale (LC_ALL, "") uses the
+         "C.UTF-8" locale, which operates in the same way as the "C" locale.
+  */
+
+#if !(HAVE_CFPREFERENCESCOPYAPPVALUE || defined WINDOWS_NATIVE || defined __CYGWIN__)
+
+  /* The system does not have a way of setting the locale, other than the
+     POSIX specified environment variables.  We use C as default locale.  */
+  return "C";
+
+#else
+
+  /* Return an XPG style locale name language[_territory][@modifier].
+     Don't even bother determining the codeset; it's not useful in this
+     context, because message catalogs are not specific to a single
+     codeset.  */
+
+# if HAVE_CFPREFERENCESCOPYAPPVALUE
+  /* Mac OS X 10.4 or newer */
+  /* Don't use the API introduced in Mac OS X 10.5, CFLocaleCopyCurrent,
+     because in macOS 10.13.4 it has the following behaviour:
+     When two or more languages are specified in the
+     "System Preferences > Language & Region > Preferred Languages" panel,
+     it returns en_CC where CC is the territory (even when English is not among
+     the preferred languages!).  What we want instead is what
+     CFLocaleCopyCurrent returned in earlier macOS releases and what
+     CFPreferencesCopyAppValue still returns, namely ll_CC where ll is the
+     first among the preferred languages and CC is the territory.  */
+  {
+    /* Cache the locale name, since CoreFoundation calls are expensive.  */
+    static const char *cached_localename;
+
+    if (cached_localename == NULL)
+      {
+        char namebuf[256];
+        CFTypeRef value =
+          CFPreferencesCopyAppValue (CFSTR ("AppleLocale"),
+                                     kCFPreferencesCurrentApplication);
+        if (value != NULL && CFGetTypeID (value) == CFStringGetTypeID ())
+          {
+            CFStringRef name = (CFStringRef)value;
+
+            if (CFStringGetCString (name, namebuf, sizeof (namebuf),
+                                    kCFStringEncodingASCII))
+              {
+                gl_locale_name_canonicalize (namebuf);
+                cached_localename = strdup (namebuf);
+              }
+          }
+        if (cached_localename == NULL)
+          cached_localename = "C";
+      }
+    return cached_localename;
+  }
+
+# endif
+
+# if defined WINDOWS_NATIVE || defined __CYGWIN__ /* Native Windows or Cygwin */
+  {
+    LCID lcid;
+
+    /* Use native Windows API locale ID.  */
+    lcid = GetThreadLocale ();
+
+    return gl_locale_name_from_win32_LCID (lcid);
+  }
+# endif
+#endif
+}
+
+/* Determine the current locale's name, and canonicalize it into XPG syntax
+     language[_territory][.codeset][@modifier]
+   The codeset part in the result is not reliable; the locale_charset()
+   should be used for codeset information instead.
+   The result must not be freed; it is statically allocated.  */
+
+const char *
+gl_locale_name (int category, const char *categoryname)
+{
+  const char *retval;
+
+  retval = gl_locale_name_thread (category, categoryname);
+  if (retval != NULL)
+    return retval;
+
+  retval = gl_locale_name_posix (category, categoryname);
+  if (retval != NULL)
+    return retval;
+
+  return gl_locale_name_default ();
+}
diff --git a/gnulib-tests/localename.h b/gnulib-tests/localename.h
new file mode 100644
index 0000000..b67f306
--- /dev/null
+++ b/gnulib-tests/localename.h
@@ -0,0 +1,98 @@
+/* Determine name of the currently selected locale.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_LOCALENAME_H
+#define _GL_LOCALENAME_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Determine the current locale's name.
+   It considers both the POSIX notion of locale name (see functions
+   gl_locale_name_thread and gl_locale_name_posix) and the system notion
+   of locale name (see function gl_locale_name_default).
+   CATEGORY is a locale category abbreviation, as defined in <locale.h>,
+   but not LC_ALL. E.g. LC_MESSAGES.
+   CATEGORYNAME is the name of CATEGORY as a string, e.g. "LC_MESSAGES".
+   Return the locale category's name, canonicalized into XPG syntax
+     language[_territory][.codeset][@modifier]
+   The codeset part in the result is not reliable; the locale_charset()
+   should be used for codeset information instead.
+   The result must not be freed; it is statically allocated.  */
+extern const char * gl_locale_name (int category, const char *categoryname);
+
+/* Determine the current per-thread locale's name, as specified by uselocale()
+   calls.
+   CATEGORY is a locale category abbreviation, as defined in <locale.h>,
+   but not LC_ALL. E.g. LC_MESSAGES.
+   CATEGORYNAME is the name of CATEGORY as a string, e.g. "LC_MESSAGES".
+   Return the locale category's name, canonicalized into XPG syntax
+     language[_territory][.codeset][@modifier]
+   or NULL if no locale has been specified for the current thread.
+   The codeset part in the result is not reliable; the locale_charset()
+   should be used for codeset information instead.
+   The result must not be freed; it is statically allocated.  */
+extern const char * gl_locale_name_thread (int category, const char *categoryname);
+
+/* Determine the thread-independent current locale's name, as specified by
+   setlocale() calls or by environment variables.
+   CATEGORY is a locale category abbreviation, as defined in <locale.h>,
+   but not LC_ALL. E.g. LC_MESSAGES.
+   CATEGORYNAME is the name of CATEGORY as a string, e.g. "LC_MESSAGES".
+   Return the locale category's name, canonicalized into XPG syntax
+     language[_territory][.codeset][@modifier]
+   or NULL if no locale has been specified to setlocale() or by environment
+   variables.
+   The codeset part in the result is not reliable; the locale_charset()
+   should be used for codeset information instead.
+   The result must not be freed; it is statically allocated.  */
+extern const char * gl_locale_name_posix (int category, const char *categoryname);
+
+/* Determine the default locale's name, as specified by environment
+   variables.
+   Return the locale category's name, or NULL if no locale has been specified
+   by environment variables.
+   The result must not be freed; it is statically allocated.  */
+extern const char * gl_locale_name_environ (int category, const char *categoryname);
+
+/* Determine the default locale's name.  This is the current locale's name,
+   if not specified by uselocale() calls, by setlocale() calls, or by
+   environment variables.  This locale name is usually determined by systems
+   settings that the user can manipulate through a GUI.
+
+   Quoting POSIX:2001:
+     "All implementations shall define a locale as the default locale,
+      to be invoked when no environment variables are set, or set to the
+      empty string.  This default locale can be the C locale or any other
+      implementation-defined locale.  Some implementations may provide
+      facilities for local installation administrators to set the default
+      locale, customizing it for each location.  IEEE Std 1003.1-2001 does
+      not require such a facility."
+
+   The result must not be freed; it is statically allocated.  */
+extern const char * gl_locale_name_default (void)
+#if !(HAVE_CFPREFERENCESCOPYAPPVALUE || defined _WIN32 || defined __CYGWIN__)
+  _GL_ATTRIBUTE_CONST
+#endif
+  ;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _GL_LOCALENAME_H */
diff --git a/gnulib-tests/macros.h b/gnulib-tests/macros.h
new file mode 100644
index 0000000..c72cc92
--- /dev/null
+++ b/gnulib-tests/macros.h
@@ -0,0 +1,81 @@
+/* Common macros used by gnulib tests.
+   Copyright (C) 2006-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+
+/* This file contains macros that are used by many gnulib tests.
+   Put here only frequently used macros, say, used by 10 tests or more.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifndef FALLTHROUGH
+# if __GNUC__ < 7
+#  define FALLTHROUGH ((void) 0)
+# else
+#  define FALLTHROUGH __attribute__ ((__fallthrough__))
+# endif
+#endif
+
+/* Define ASSERT_STREAM before including this file if ASSERT must
+   target a stream other than stderr.  */
+#ifndef ASSERT_STREAM
+# define ASSERT_STREAM stderr
+#endif
+
+/* ASSERT (condition);
+   verifies that the specified condition is fulfilled.  If not, a message
+   is printed to ASSERT_STREAM if defined (defaulting to stderr if
+   undefined) and the program is terminated with an error code.
+
+   This macro has the following properties:
+     - The programmer specifies the expected condition, not the failure
+       condition.  This simplifies thinking.
+     - The condition is tested always, regardless of compilation flags.
+       (Unlike the macro from <assert.h>.)
+     - On Unix platforms, the tester can debug the test program with a
+       debugger (provided core dumps are enabled: "ulimit -c unlimited").
+     - For the sake of platforms where no debugger is available (such as
+       some mingw systems), an error message is printed on the error
+       stream that includes the source location of the ASSERT invocation.
+ */
+#define ASSERT(expr) \
+  do                                                                         \
+    {                                                                        \
+      if (!(expr))                                                           \
+        {                                                                    \
+          fprintf (ASSERT_STREAM, "%s:%d: assertion '%s' failed\n",     \
+                   __FILE__, __LINE__, #expr);                          \
+          fflush (ASSERT_STREAM);                                            \
+          abort ();                                                          \
+        }                                                                    \
+    }                                                                        \
+  while (0)
+
+/* SIZEOF (array)
+   returns the number of elements of an array.  It works for arrays that are
+   declared outside functions and for local variables of array type.  It does
+   *not* work for function parameters of array type, because they are actually
+   parameters of pointer type.  */
+#define SIZEOF(array) (sizeof (array) / sizeof (array[0]))
+
+/* STREQ (str1, str2)
+   Return true if two strings compare equal.  */
+#define STREQ(a, b) (strcmp (a, b) == 0)
+
+/* Some numbers in the interval [0,1).  */
+extern const float randomf[1000];
+extern const double randomd[1000];
+extern const long double randoml[1000];
diff --git a/gnulib-tests/minus-zero.h b/gnulib-tests/minus-zero.h
new file mode 100644
index 0000000..df939ff
--- /dev/null
+++ b/gnulib-tests/minus-zero.h
@@ -0,0 +1,74 @@
+/* Macros for floating-point negative zero.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Keep in sync with m4/minus-zero.m4!  */
+
+#include <float.h>
+
+
+/* minus_zerof represents the value -0.0f.  */
+
+/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0f.
+   ICC 10.0 has a bug when optimizing the expression -zero.
+   The expression -FLT_MIN * FLT_MIN does not work when cross-compiling
+   to PowerPC on Mac OS X 10.5.  */
+#if defined __hpux || defined __sgi || defined __ICC
+static float
+compute_minus_zerof (void)
+{
+  return -FLT_MIN * FLT_MIN;
+}
+# define minus_zerof compute_minus_zerof ()
+#else
+float minus_zerof = -0.0f;
+#endif
+
+
+/* minus_zerod represents the value -0.0.  */
+
+/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0.
+   ICC 10.0 has a bug when optimizing the expression -zero.
+   The expression -DBL_MIN * DBL_MIN does not work when cross-compiling
+   to PowerPC on Mac OS X 10.5.  */
+#if defined __hpux || defined __sgi || defined __ICC
+static double
+compute_minus_zerod (void)
+{
+  return -DBL_MIN * DBL_MIN;
+}
+# define minus_zerod compute_minus_zerod ()
+#else
+double minus_zerod = -0.0;
+#endif
+
+
+/* minus_zerol represents the value -0.0L.  */
+
+/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0L.
+   IRIX cc can't put -0.0L into .data, but can compute at runtime.
+   ICC 10.0 has a bug when optimizing the expression -zero.
+   The expression -LDBL_MIN * LDBL_MIN does not work when cross-compiling
+   to PowerPC on Mac OS X 10.5.  */
+#if defined __hpux || defined __sgi || defined __ICC
+static long double
+compute_minus_zerol (void)
+{
+  return -LDBL_MIN * LDBL_MIN;
+}
+# define minus_zerol compute_minus_zerol ()
+#else
+long double minus_zerol = -0.0L;
+#endif
diff --git a/gnulib-tests/nan.h b/gnulib-tests/nan.h
new file mode 100644
index 0000000..ac44672
--- /dev/null
+++ b/gnulib-tests/nan.h
@@ -0,0 +1,85 @@
+/* Macros for not-a-number.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+
+/* IBM z/OS supports both hexadecimal and IEEE floating-point formats. The
+   former does not support NaN and its isnan() implementation returns zero
+   for all values.  */
+#if defined __MVS__ && defined __IBMC__ && !defined __BFP__
+# error "NaN is not supported with IBM's hexadecimal floating-point format; please re-compile with -qfloat=ieee"
+#endif
+
+/* NaNf () returns a 'float' not-a-number.  */
+
+/* The Compaq (ex-DEC) C 6.4 compiler and the Microsoft MSVC 9 compiler choke
+   on the expression 0.0 / 0.0.  The IBM XL C compiler on z/OS complains.
+   PGI 16.10 complains.  */
+#if (defined __DECC || defined _MSC_VER \
+     || (defined __MVS__ && defined __IBMC__)   \
+     || defined __PGI)
+static float
+NaNf ()
+{
+  static float zero = 0.0f;
+  return zero / zero;
+}
+#else
+# define NaNf() (0.0f / 0.0f)
+#endif
+
+
+/* NaNd () returns a 'double' not-a-number.  */
+
+/* The Compaq (ex-DEC) C 6.4 compiler and the Microsoft MSVC 9 compiler choke
+   on the expression 0.0 / 0.0.  The IBM XL C compiler on z/OS complains.
+   PGI 16.10 complains.  */
+#if (defined __DECC || defined _MSC_VER \
+     || (defined __MVS__ && defined __IBMC__)   \
+     || defined __PGI)
+static double
+NaNd ()
+{
+  static double zero = 0.0;
+  return zero / zero;
+}
+#else
+# define NaNd() (0.0 / 0.0)
+#endif
+
+
+/* NaNl () returns a 'long double' not-a-number.  */
+
+/* On Irix 6.5, gcc 3.4.3 can't compute compile-time NaN, and needs the
+   runtime type conversion.
+   The Microsoft MSVC 9 compiler chokes on the expression 0.0L / 0.0L.
+   The IBM XL C compiler on z/OS complains.
+   PGI 16.10 complains.  */
+#ifdef __sgi
+static long double NaNl ()
+{
+  double zero = 0.0;
+  return zero / zero;
+}
+#elif defined _MSC_VER || (defined __MVS__ && defined __IBMC__) || defined __PGI
+static long double
+NaNl ()
+{
+  static long double zero = 0.0L;
+  return zero / zero;
+}
+#else
+# define NaNl() (0.0L / 0.0L)
+#endif
diff --git a/gnulib-tests/nap.h b/gnulib-tests/nap.h
new file mode 100644
index 0000000..5dd264f
--- /dev/null
+++ b/gnulib-tests/nap.h
@@ -0,0 +1,155 @@
+/* Assist in file system timestamp tests.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#ifndef GLTEST_NAP_H
+# define GLTEST_NAP_H
+
+# include <limits.h>
+# include <stdbool.h>
+
+# include <intprops.h>
+
+/* Name of the witness file.  */
+#define TEMPFILE BASE "nap.tmp"
+
+/* File descriptor used for the witness file.  */
+static int nap_fd = -1;
+
+/* Return A - B, in ns.
+   Return 0 if the true result would be negative.
+   Return INT_MAX if the true result would be greater than INT_MAX.  */
+static int
+diff_timespec (struct timespec a, struct timespec b)
+{
+  time_t as = a.tv_sec;
+  time_t bs = b.tv_sec;
+  int ans = a.tv_nsec;
+  int bns = b.tv_nsec;
+  int sdiff;
+
+  ASSERT (0 <= ans && ans < 2000000000);
+  ASSERT (0 <= bns && bns < 2000000000);
+
+  if (! (bs < as || (bs == as && bns < ans)))
+    return 0;
+
+  if (INT_SUBTRACT_WRAPV (as, bs, &sdiff)
+      || INT_MULTIPLY_WRAPV (sdiff, 1000000000, &sdiff)
+      || INT_ADD_WRAPV (sdiff, ans - bns, &sdiff))
+    return INT_MAX;
+
+  return sdiff;
+}
+
+/* If DO_WRITE, bump the modification time of the file designated by NAP_FD.
+   Then fetch the new STAT information of NAP_FD.  */
+static void
+nap_get_stat (struct stat *st, int do_write)
+{
+  if (do_write)
+    {
+      ASSERT (write (nap_fd, "\n", 1) == 1);
+#if defined _WIN32 || defined __CYGWIN__
+      /* On Windows, the modification times are not changed until NAP_FD
+         is closed. See
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-writefile> */
+      close (nap_fd);
+      nap_fd = open (TEMPFILE, O_RDWR, 0600);
+      ASSERT (nap_fd != -1);
+      lseek (nap_fd, 0, SEEK_END);
+#endif
+    }
+  ASSERT (fstat (nap_fd, st) == 0);
+}
+
+/* Given a file whose descriptor is FD, see whether delaying by DELAY
+   nanoseconds causes a change in a file's mtime.
+   OLD_ST is the file's status, recently gotten.  */
+static bool
+nap_works (int delay, struct stat old_st)
+{
+  struct stat st;
+  struct timespec delay_spec;
+  delay_spec.tv_sec = delay / 1000000000;
+  delay_spec.tv_nsec = delay % 1000000000;
+  ASSERT (nanosleep (&delay_spec, 0) == 0);
+  nap_get_stat (&st, 1);
+
+  if (diff_timespec (get_stat_mtime (&st), get_stat_mtime (&old_st)))
+    return true;
+
+  return false;
+}
+
+static void
+clear_temp_file (void)
+{
+  if (0 <= nap_fd)
+    {
+      ASSERT (close (nap_fd) != -1);
+      ASSERT (unlink (TEMPFILE) != -1);
+    }
+}
+
+/* Sleep long enough to notice a timestamp difference on the file
+   system in the current directory.  Use an adaptive approach, trying
+   to find the smallest delay which works on the current file system
+   to make the timestamp difference appear.  Assert a maximum delay of
+   ~2 seconds, more precisely sum(2^n) from 0 to 30 = 2^31 - 1 = 2.1s.
+   Assumes that BASE is defined, and requires that the test module
+   depends on nanosleep.  */
+static void
+nap (void)
+{
+  struct stat old_st;
+  static int delay = 1;
+
+  if (-1 == nap_fd)
+    {
+      atexit (clear_temp_file);
+      ASSERT ((nap_fd = creat (TEMPFILE, 0600)) != -1);
+      nap_get_stat (&old_st, 0);
+    }
+  else
+    {
+      ASSERT (0 <= nap_fd);
+      nap_get_stat (&old_st, 1);
+    }
+
+  if (1 < delay)
+    delay = delay / 2;  /* Try half of the previous delay.  */
+  ASSERT (0 < delay);
+
+  for (;;)
+    {
+      if (nap_works (delay, old_st))
+        return;
+      if (delay <= (2147483647 - 1) / 2)
+        {
+          delay = delay * 2 + 1;
+          continue;
+        }
+      else
+        break;
+    }
+
+  /* Bummer: even the highest nap delay didn't work. */
+  ASSERT (0);
+}
+
+#endif /* GLTEST_NAP_H */
diff --git a/gnulib-tests/null-ptr.h b/gnulib-tests/null-ptr.h
new file mode 100644
index 0000000..b978418
--- /dev/null
+++ b/gnulib-tests/null-ptr.h
@@ -0,0 +1,33 @@
+/* Return a NULL pointer, without letting the compiler know it.
+   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <stdlib.h>
+
+/* Return NULL.
+   Usual compilers are not able to infer something about the return value.  */
+static void *
+null_ptr (void)
+{
+  unsigned int x = rand ();
+  unsigned int y = x * x;
+  if (y & 2)
+    return (void *) -1;
+  else
+    return (void *) 0;
+}
+
+/* If you want to know why this always returns NULL, read
+   https://en.wikipedia.org/wiki/Quadratic_residue#Prime_power_modulus .  */
diff --git a/gnulib-tests/perror.c b/gnulib-tests/perror.c
new file mode 100644
index 0000000..6eb83ee
--- /dev/null
+++ b/gnulib-tests/perror.c
@@ -0,0 +1,49 @@
+/* Print a message describing error code.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+   Written by Bruno Haible and Simon Josefsson.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdio.h>
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "strerror-override.h"
+
+/* Use the system functions, not the gnulib overrides in this file.  */
+#undef fprintf
+
+void
+perror (const char *string)
+{
+  char stackbuf[STACKBUF_LEN];
+  int ret;
+
+  /* Our implementation guarantees that this will be a non-empty
+     string, even if it returns EINVAL; and stackbuf should be sized
+     large enough to avoid ERANGE.  */
+  ret = strerror_r (errno, stackbuf, sizeof stackbuf);
+  if (ret == ERANGE)
+    abort ();
+
+  if (string != NULL && *string != '\0')
+    fprintf (stderr, "%s: %s\n", string, stackbuf);
+  else
+    fprintf (stderr, "%s\n", stackbuf);
+}
diff --git a/gnulib-tests/randomd.c b/gnulib-tests/randomd.c
new file mode 100644
index 0000000..3caa873
--- /dev/null
+++ b/gnulib-tests/randomd.c
@@ -0,0 +1,1028 @@
+/* Some random 'double' numbers used by gnulib tests.
+   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "macros.h"
+
+/* Some numbers in the interval [0,1).  */
+
+const double randomd[1000] =
+{
+  /* Some not so random numbers at the beginning.  */
+  0.0,
+  /* Then some numbers generated by GNU clisp.  */
+  0.89255299921822260894833866359,
+  0.56160033401164667976788987953,
+  0.51743003502243816003616725706,
+  0.78419011286685927826225711525,
+  0.64400370685467819470063888148,
+  0.38151255107934048933308886009,
+  0.279822118770531878839000163945,
+  0.51983544681375980919751125922,
+  0.314601557551148376372971500376,
+  0.44551938964685651088492647794,
+  0.44235192503793823441729544512,
+  0.0040120762636767874958681841509,
+  0.57608572759464216512285032474,
+  0.69151953350396585566714564265,
+  0.65634190642598148152780718322,
+  0.68520459394253807590733184567,
+  0.60728078832107635628786818115,
+  0.376679934380311318950949959986,
+  0.48893422455419005003224231708,
+  0.59664228319132670346209747371,
+  0.70162191594290728927555900075,
+  0.70981089000005327192380201706,
+  0.480574069305863387682360414433,
+  0.369264627455974856929910550376,
+  0.42224495444170593700839286742,
+  0.96974027194201320964041066537,
+  0.69950081092902694549973698004,
+  0.366921803754944985368022837045,
+  0.19460757354611588216534077527,
+  0.046437559879825520495822908204,
+  0.57694149138457596563075731094,
+  0.49632733844850578203860859535,
+  0.80735347459453553970910033766,
+  0.210271595033975357161360058967,
+  0.176539870249396534142059724214,
+  0.75320267419158828905982021879,
+  0.09535042912249636739069790414,
+  0.41433965906065337672703334968,
+  0.62189345390648146852641556292,
+  0.322595610794052908153116342595,
+  0.173860860827838938281708881865,
+  0.55258425878412963601205794028,
+  0.066559056629606284504735241978,
+  0.0193835990781649263368095562556,
+  0.127101629778251450428653553143,
+  0.9603475517586241593077319367,
+  0.68429794014738591042302507235,
+  0.0139808909843634026741151214975,
+  0.0036035679428138856395527711611,
+  0.072656401341518399752950821809,
+  0.229562863635014486626281702425,
+  0.88337277579960676546469424767,
+  0.88850212167800818244030104263,
+  0.208063225990716089095767541316,
+  0.268304917462565269805874454916,
+  0.3195427196271617997151392088,
+  0.59101407246003811289573881403,
+  0.972093867752368095080492689,
+  0.409246208960242309650511849637,
+  0.84250639316418167849010246997,
+  0.063842712141624332977179722113,
+  0.96470327141354888687046060373,
+  0.43109879978424216966175314888,
+  0.14551248610248934836482236208,
+  0.84819094513299136408788493212,
+  0.41166757935215520377191731704,
+  0.96020915727830366672170130175,
+  0.55313106883839046701902022583,
+  0.9796595451013758579218900134,
+  0.74222694300533435700276764516,
+  0.117294243075539310976051880564,
+  0.32216824750097146958151447387,
+  0.59090211400137031908131441,
+  0.116841680533127258304897076543,
+  0.83595865401141052310417569507,
+  0.249488155772987988074361149176,
+  0.67896015287499211280971531326,
+  0.72256498621401843299673078876,
+  0.327315362968271601258667297595,
+  0.37438214921868498405279953481,
+  0.76929694812658272272027330778,
+  0.44282297788821568912463681727,
+  0.59517407740270913902014268964,
+  0.346217547960702024419571713567,
+  0.68339868731911838904373225224,
+  0.057507087039986776837238366719,
+  0.1189343986186977384509521024,
+  0.65646666532916174831489781194,
+  0.80925124288745606089697795707,
+  0.61302937875769552609444313984,
+  0.64367434863387777107222872563,
+  0.059228300879437554416166010005,
+  0.76899237494115809397158171526,
+  0.335797991302131791511629123206,
+  0.72923178692628392090326699514,
+  0.79300056654108221012876564405,
+  0.58866760551158502690719665335,
+  0.65249222174748700395779659047,
+  0.79573528799715877963614353006,
+  0.101363067664632247385474166088,
+  0.392494669960902131436398643207,
+  0.37323453200630776302168616197,
+  0.29857554596542776498065634631,
+  0.9796202149626312305197715787,
+  0.58770219934833805722677794788,
+  0.126574575737099431915356308504,
+  0.51086682994362911961448609847,
+  0.26221303911946316754295166201,
+  0.87331402410090670707406246035,
+  0.08604799064198292716037672196,
+  0.77880380648915901962140523059,
+  0.34131646312914811415381942246,
+  0.422787222735822749759714960156,
+  0.16550478231620269333824890372,
+  0.84087065799129220871741135711,
+  0.96561976597443996963329538915,
+  0.059890627133354026356081805998,
+  0.09359839900604706997291172522,
+  0.61463026659668017286248279853,
+  0.220582135665522265733252389516,
+  0.30146695094150797543070759948,
+  0.406591688270652513808216198946,
+  0.206959751707199812083987569348,
+  0.71382992952779021033600406503,
+  0.98971690700151825984363090029,
+  0.86339958328134745391858859595,
+  0.70037828363249257457230217791,
+  0.97380974339470107231135690474,
+  0.9184635965630883290893011311,
+  0.418605216026507942885819265225,
+  0.61793227858714759711625818653,
+  0.67394880797682685081908511723,
+  0.98871101941805039780826467279,
+  0.65973593853137069988371349845,
+  0.93348525072186907424189028727,
+  0.59164378220465485142298641014,
+  0.95303768733773138214124075961,
+  0.88667310242538944858141870801,
+  0.83785319781204861623008709825,
+  0.54026788227426708201242457367,
+  0.74842599257855801522259951132,
+  0.286624102305531463268442510375,
+  0.41180484980938874161376712508,
+  0.22754664620316922947541651384,
+  0.62360609793949755240041318939,
+  0.3311618194042077047850111557,
+  0.315407885695867020730009836503,
+  0.215221706711430951961780213436,
+  0.168600630933631406101821024413,
+  0.62661489373200405241464923618,
+  0.95357070304277219756741072036,
+  0.5186418766697788447635039428,
+  0.70772930521061953327927296944,
+  0.410376884797056150221504703145,
+  0.39705302343406249619577860633,
+  0.79215885822696034431481699125,
+  0.157831717946112504384603002152,
+  0.26892306298536012837855426922,
+  0.15697088614321016223211167568,
+  0.41395315712905823355235182393,
+  0.043977876945327860015049914653,
+  0.91453495544799358550673657283,
+  0.46230093259088633973148827911,
+  0.79479146768024434444120965094,
+  0.1466704986407674407377422815,
+  0.093614591443204076599999803382,
+  0.66061870961706149406527099303,
+  0.087462146328394574476138187113,
+  0.79683664444310818297700615557,
+  0.39732728185755441060070738751,
+  0.141934473990413594291362391075,
+  0.63111751995951919258061547632,
+  0.78521985432793823024330967029,
+  0.53307346282606806792796696141,
+  0.61679109370763781010143645189,
+  0.40696293619387120891515025426,
+  0.68670343879278712242412028794,
+  0.0115112936831136012901340526452,
+  0.70866056737692430987650236649,
+  0.75378980574358943122474800795,
+  0.17133202766710894969283150847,
+  0.36771201738922655520549864974,
+  0.64614182581953931840374311331,
+  0.354495602088990708111406368474,
+  0.96418771817934443444348833491,
+  0.51633426669933834634574104246,
+  0.064671329812306055349433587193,
+  0.084335079914541732137341401384,
+  0.98578018340150609333535890283,
+  0.32988119060114570391488875477,
+  0.70568290443337103364762141207,
+  0.7501960060851696034137148851,
+  0.141312840936106004164373056114,
+  0.60721022154106372815080238296,
+  0.49179275887283771965744826261,
+  0.85530668893284708999269819019,
+  0.09730053915339358769067661488,
+  0.48817911888023094845428570434,
+  0.37116312252354470380676793579,
+  0.61870369881699387959990992873,
+  0.381874188039839457469043174076,
+  0.68193837613090719561872304949,
+  0.4773618313988618747215621251,
+  0.152383599292709764750406667286,
+  0.54317522808228983459963725598,
+  0.363848788591302782268887022354,
+  0.0105589810271147011378412305973,
+  0.55582445068669939957392951111,
+  0.99910376130213936748996659383,
+  0.90286867348280161480903197439,
+  0.48268382934936288156485037692,
+  0.0976084557356802030533675394,
+  0.29004949962481398455881920169,
+  0.99169758897256717005011514856,
+  0.20722895154834288274430061308,
+  0.50294863638464584121275744208,
+  0.71094033855350495714847377558,
+  0.94078709219520224551350834268,
+  0.48088262771516317628650315489,
+  0.80538698628980761175811796611,
+  0.83495029615293903361580945571,
+  0.67996381940825251937974905761,
+  0.57936805772275234468590364926,
+  0.41778137764942046281708286844,
+  0.161602687591454506771276482303,
+  0.093910625156097743113739432334,
+  0.45716763620641108625606409874,
+  0.96455075374827233820027584808,
+  0.5179966880512917274934448216,
+  0.046797382046060065926143985952,
+  0.83673567319931334127111064225,
+  0.44224504444533247245974476514,
+  0.73281179385894336737033582786,
+  0.5642490153724193432309549673,
+  0.83700200507325250303481208805,
+  0.152714941779871552944298597052,
+  0.38606607994977770238226473985,
+  0.0155140917516105439042442246577,
+  0.51621537013393688713546096688,
+  0.311969390991657895966526156064,
+  0.83890647777450698803932943984,
+  0.54370750820133482930695388638,
+  0.98636765788772465929756760473,
+  0.77334255661128878905675504339,
+  0.57070354296508751519811368688,
+  0.8365252076669013372866223481,
+  0.344601601940890721182485798794,
+  0.92658930620470543221158939208,
+  0.72724523363899270076210273102,
+  0.413672082025645586061788451734,
+  0.5132836422023222169840403333,
+  0.82135610583961360173883281975,
+  0.423835065039748889417547786563,
+  0.87083598844595488941471761572,
+  0.59009392451459866513886634656,
+  0.206124826643305920436961792363,
+  0.288685540685143988030522421633,
+  0.7944357933456167153993184889,
+  0.090945230657758780394996530608,
+  0.52981750421369669363095418817,
+  0.091368944984485824360107751981,
+  0.81824925769562351657564377069,
+  0.083315412912658535228751011063,
+  0.59602276778799576464600065047,
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+  0.394692074165738897132014378974,
+  0.92031214264405188928824363967,
+  0.32812665356161216265971156268,
+  0.79754299890007289545033977389,
+  0.3029021512227565310021437326,
+  0.81425785760698537744367921928,
+  0.85199399843570233736733560413,
+  0.096629890212080240754541391968,
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+  0.451368813651510369666120626045,
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+  0.6107715946195223295493238966,
+  0.980870588312723808697191463,
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+  0.54911931698472764719220618506,
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+  0.75524567154228028735673060411,
+  0.90790601849806560799894333131,
+  0.75164241313793249434488428193,
+  0.38724602290468111557712203885,
+  0.36352513950081020449187506395,
+  0.078398790907179055722325452963,
+  0.5003676822199407758422514133,
+  0.86055044548361328714384972985,
+  0.66748567445598821900669819042,
+  0.95450644393912187127659765969,
+  0.9536501355878008523425355652,
+  0.56207573012593503802043957099,
+  0.99057795680550440527031916411,
+  0.056136908924222021770088579728,
+  0.89322960593560085272815946927,
+  0.19380351076299398770342941398,
+  0.036881975481577328074706357897,
+  0.38834900979665334617449710449,
+  0.77196507761008668275581490587,
+  0.87539115393397618421355963533,
+  0.9131721846286054396553858461,
+  0.62245648254908013430163665866,
+  0.56021174819199355559539089633,
+  0.86987294559046384230921358438,
+  0.474584307464076041054198211805,
+  0.37224942408757353492416873571,
+  0.198307276357215222087716993615,
+  0.81633548414328354008913860616,
+  0.071192681637945014051745371309,
+  0.227203421058334439883665388655,
+  0.50527083273847576806586104904,
+  0.25911353175247232791676189983,
+  0.103567996992606824957067451526,
+  0.98316826751311017109085781757,
+  0.99206610065531611133123425907,
+  0.63838444880264351660305680771,
+  0.90013304139719692321619239255,
+  0.541419881593941428911392944,
+  0.434681681520065487913409442927,
+  0.0277935905905462584654818408167,
+  0.28736085880215502013374946299,
+  0.204706679291990486471085620508,
+  0.29639415300325412139805373353,
+  0.316818074164048785111401123944,
+  0.58068268044073033182148412246,
+  0.137736206950094621238996907006,
+  0.80907996549523150166492783923,
+  0.73799561611209772635015717353,
+  0.84013433924397440368969968592,
+  0.46126521311414726401422152854,
+  0.78013716447507497359555980298,
+  0.83405708922951231042933175851,
+  0.6366367969739079258896472192,
+  0.77353748358406402598000037557,
+  0.17489624725635947111471117775,
+  0.80267952648428412026314875447,
+  0.80437106861315296029137160672,
+  0.62834462177566783487584779777,
+  0.31539602345858033626133832055,
+  0.50541890853061839219557074283,
+  0.0195874476781850222509795360627,
+  0.011676447193909007242643314705,
+  0.85675479754070644130150816794,
+  0.09391269154749661204040398199,
+  0.369625667102334643216258483376,
+  0.84311577046357953313746551837,
+  0.66438426715728382263582851036,
+  0.70530906415261448155650458603,
+  0.446783684004800041373395690117,
+  0.75627790284213576819810990131,
+  0.57190285913753158265774292274,
+  0.97785681370875218892539297465,
+  0.0244503386494348881614690746194,
+  0.48528430854909558202793141933,
+  0.89436155397807056672243211894,
+  0.40757489194485346255194449191,
+  0.91772837786834838909335779229,
+  0.28020326531649972709359017096,
+  0.28847822326776188982020803144,
+  0.93193769743225684077624356649,
+  0.58336147304815741644785105161,
+  0.4004241800179331174134885947,
+  0.265790823692672203607418801725,
+  0.4137092141145146388568879939,
+  0.0255090449126572366852573357318,
+  0.47601725598948555645487446626,
+  0.69141516452580797436419291497,
+  0.187709862166242786826507443003,
+  0.31177816288567708916778389045,
+  0.79635247302484103596788484137,
+  0.14648403361265752358955335086,
+  0.0088027047060531475573345163528,
+  0.90053967411241805345616039474,
+  0.373822238382428585287035417224,
+  0.94303097002109978273901800507,
+  0.037263906643698883423150604649,
+  0.98416823398276433881119247311,
+  0.257766562836474661728601317803,
+  0.09336855716941364387765222813,
+  0.057604551843195630210060755775,
+  0.37732024813036636644231432449,
+  0.437099108019093398068604946814,
+  0.0298274889889844501626534131975,
+  0.54161045457572229928359302347,
+  0.354192069739745951755754451894,
+  0.9952629304832433588789284291,
+  0.61362350596285189174752077338,
+  0.23176197923774029736185020682,
+  0.259000332877923815426717028414,
+  0.77171708810079063604185854121,
+  0.87278431247491539306511051532,
+  0.386310463821549823085972724515,
+  0.19043920209178263945663905422,
+  0.77200547833114724875436606573,
+  0.2683024354984293205497398925,
+  0.144270112550972640008446091075,
+  0.36996280314557984925474224612,
+  0.163548224543250866742712583905,
+  0.54541238293503241055380526708,
+  0.54270760938500008382580072956,
+  0.7374073253240524865446763851,
+  0.93470960326436177572863031654,
+  0.71417607213823278615975270201,
+  0.65837463356664939532769528292,
+  0.433323451649582925271830911365,
+  0.79664580661766246494864588315,
+  0.392079017934601610514677836005,
+  0.212454387416532999103471570235,
+  0.198678082418012501322802116335,
+  0.61525672800559338657275986197,
+  0.99339589895181138684928419014,
+  0.53563057949945927383392076793,
+  0.68817192513245948798192690082,
+  0.59671938169380086666866042956,
+  0.5686075254645125832635026196,
+  0.25860953535454698758704936914,
+  0.60779864941995215785819783969,
+  0.46515241662568547274625942204,
+  0.8756966078479474164213834749,
+  0.89153160343113076353740745469,
+  0.57055911159151577684982200009,
+  0.39366246576557783924065683256,
+  0.53789676931469921495851209609,
+  0.95842028586447684249630374944,
+  0.25218284880717367924827402845,
+  0.23718965807272971860203662735,
+  0.334222632819004380754702693406,
+  0.6370849366068287810411454729,
+  0.722665796162802454203702773,
+  0.50216248905279887048328225791,
+  0.34529823309520970630714708672,
+  0.45098892404492692601908443802,
+  0.64640019115293913591196874603,
+  0.137077316379736192931987264458,
+  0.29368115076039970149731521521,
+  0.20091822953913855557804069085,
+  0.066267083813833718511605782276,
+  0.88094596104423280074202839474,
+  0.071730322265966936504743175424,
+  0.69735904142296779896396736035,
+  0.91352594564083795862432502567,
+  0.13244220377041278512040316988,
+  0.6283911312781029516331064494,
+  0.34896540167805105781090114462,
+  0.6795367801751911186206756471,
+  0.74898526486791573083377925403,
+  0.71700182398199203349731046015,
+  0.121142833366516620257163901501,
+  0.32678002036857151533698078636,
+  0.327511655875027224450064555456,
+  0.0079152053645354575349489795814,
+  0.84748954479623021059675156738,
+  0.75041561033954009809301550159,
+  0.41101693712463238996746228193,
+  0.90155864029338267639417046915,
+  0.35464670537047753945618208157,
+  0.68848712573944472430623590326,
+  0.08893193373618063124738179594,
+  0.58932830480784385636485098641,
+  0.0501618828375381577588978271165,
+  0.9451968329901169788400753848,
+  0.074994725566097580721185016702,
+  0.191860088196691871607965261685,
+  0.67853841063536805868885844477,
+  0.179445375284033906887325905976,
+  0.84157620913886056000430779083,
+  0.7377942162322144186341324232,
+  0.231126715579023126062082806996,
+  0.127662509645324778320005407937,
+  0.63062414859560283674777403205,
+  0.55283326072907470543330204975,
+  0.81243486031688046850257374808,
+  0.299095175225750536694802628506,
+  0.34284433830834748530634854762,
+  0.92098838107935607957057329632,
+  0.6334432153537539286206936299,
+  0.49203336326915182548719200464,
+  0.70089872986754081776092540042,
+  0.410346112246289262244008861334,
+  0.689375704219352519232614571,
+  0.53543492718830214408075484368,
+  0.78985504761729292283075540625,
+  0.66802245726332267870092702429,
+  0.75600588548341120124374250114,
+  0.83217485519464083512235296359,
+  0.77758150309412736979136465746,
+  0.067382141804836913185384124002,
+  0.7289836962356747770023887674,
+  0.453434776313686590560640460504,
+  0.3160796148757468204057886796,
+  0.0098933475787107681104048511314,
+  0.3620064234142809735084479026,
+  0.85993179373877360456391909506,
+  0.90684883450763884954227285187,
+  0.75959171037325548903969803948,
+  0.91219881792279148536349496306,
+  0.97175430264940118917041244436,
+  0.292364544897748356834218017667,
+  0.126096590956329503351026499397,
+  0.058210669685805595156500555938,
+  0.207143479048534791976348255132,
+  0.202837039257860939456824357966,
+  0.459137240079351948795601640776,
+  0.65480905235794807223708347609
+};
diff --git a/gnulib-tests/randoml.c b/gnulib-tests/randoml.c
new file mode 100644
index 0000000..c4cbaf8
--- /dev/null
+++ b/gnulib-tests/randoml.c
@@ -0,0 +1,1028 @@
+/* Some random 'long double' numbers used by gnulib tests.
+   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "macros.h"
+
+/* Some numbers in the interval [0,1).  */
+
+const long double randoml[1000] =
+{
+  /* Some not so random numbers at the beginning.  */
+  0.0L,
+  /* Then some numbers generated by GNU clisp.  */
+  0.709874756135422554674614242046304686448L,
+  0.486497838502717923110029188864352615388L,
+  0.474019570990182753146861083750226106848L,
+  0.998821069612940336401792152067298257397L,
+  0.68230324395444341476284133813649237509L,
+  0.0812383212795450007980350531141537177532L,
+  0.43131112016001535977175708439191217567L,
+  0.1596337172541222285215378906083607753005L,
+  0.0447361192177328171952931546845870270203L,
+  0.669148550486018286115665314826153614017L,
+  0.398752708644620313955955676251505325896L,
+  0.600019492390024166744893736290881101244L,
+  0.78337397012688890834008412364808365851L,
+  0.747414410152603863408503379239564644402L,
+  0.550615721371501982864462175362996180322L,
+  0.0073983673767251687422683917248311760491L,
+  0.693846360902780799478892082407382699085L,
+  0.751592057901191172906159475240427353057L,
+  0.74000578784995401707243054106755282117L,
+  0.847264623235961908747497547605068838836L,
+  0.917431426585209425652777605148791919017L,
+  0.267532476015101748449269162884835638528L,
+  0.486834088208986505203048715784492259319L,
+  0.4580154564181484580770749178538567666L,
+  0.391521076582874764982597286237947922907L,
+  0.69173131929214083677828129436922728366L,
+  0.995268639187054867212755710743514657877L,
+  0.553189251912843822062196619876802699895L,
+  0.632300552505301947698796653386744186037L,
+  0.445572801006840927064646197943103543344L,
+  0.993634311396905276414701816228609517838L,
+  0.611582274481091436495638926486363711255L,
+  0.017611091105275929341544154464243038417L,
+  0.598936378040443270534796418637146416803L,
+  0.939730325871014729497001074244817030738L,
+  0.385712528561693907444911228190200940125L,
+  0.48796444333495738271693214259711532603L,
+  0.508634972895891442259656591497940133962L,
+  0.88453398179301716552318999435310293852L,
+  0.509099535482633468613040057130206639612L,
+  0.333677997666677081186230843198919594355L,
+  0.82715349353996770180499230535973424237L,
+  0.0372593663309767971914036990047894757662L,
+  0.932828780275931267421133064996449298348L,
+  0.486099261359133830842098860485004683725L,
+  0.987156392631551825781809767746170502002L,
+  0.824739790678073493124786291053674093535L,
+  0.671869573118280976952523743592826377585L,
+  0.48088844444394888967684860088619551899L,
+  0.017233021606613044454327510797750273989L,
+  0.988102711714879869326666071903065279145L,
+  0.091615081537455465573860363408517029583L,
+  0.0113278995312253231106729997476313183323L,
+  0.294349528513080028346115860151112891433L,
+  0.0097058790914280197566968241982258935964L,
+  0.715113281550035710673074854712220192465L,
+  0.739627170474553083453358265804562580162L,
+  0.588476045636558489860462119645353521893L,
+  0.91330346819098343970944232526748274664L,
+  0.281457572112513183673653575304242456425L,
+  0.784192391468991402261628322552430383283L,
+  0.504857923842698553133786835061714061812L,
+  0.230410937725986177704701374433825197397L,
+  0.535805811877939822805608704986961969659L,
+  0.0508287955596506952822240797812703550548L,
+  0.179399756999629053194209501169297540332L,
+  0.675837373242984020977236431747771655704L,
+  0.981496523455084073391380532008173135055L,
+  0.325845075647804753424852268729037997407L,
+  0.832630951427200447589084239299500129776L,
+  0.825354056334755646582091209610369762364L,
+  0.574731012869980895104127749738122205757L,
+  0.799028354294603017571131513193291020045L,
+  0.537721586879667191016369071169775496218L,
+  0.83846801885738807298552515294277869191L,
+  0.0922901597877978587435698953162723703674L,
+  0.434458505758559675954739433438496373717L,
+  0.308017320632506922735963882703835222897L,
+  0.0192693232310748837390370764187488626234L,
+  0.65275462537999797862908920689650691667L,
+  0.357130585286320841741290333260811815153L,
+  0.359562085720204868627653630044659240449L,
+  0.758320826841831017712067337815543048118L,
+  0.62169722559489484088614873429559348682L,
+  0.17335411409874538731529771306978631118L,
+  0.154077331752487118534287271363344964006L,
+  0.148559174998934930922746358844164455867L,
+  0.881316225913391098839630896554038163768L,
+  0.89289796752480477623907740261818685845L,
+  0.57786655574695620371527391411424563834L,
+  0.318175774295281868509200498351278930862L,
+  0.194978302204782205514236430086515458283L,
+  0.87084962252516402992532937666368998137L,
+  0.362113882465068209502300826516448793743L,
+  0.273446496762640462316848141032810658473L,
+  0.1471399192242189033406154289397228481905L,
+  0.937157507052090331728212622934524925056L,
+  0.600045430164287985733450402316667890373L,
+  0.794478865621258499047814379367829521507L,
+  0.889115878933706260333129391997704491913L,
+  0.631825206206982866021784416451887594472L,
+  0.966422225095067311240936396545408962515L,
+  0.676845470105427028205320649846678927664L,
+  0.671163783319728784750606328490914935783L,
+  0.213726274743505026386536996423761328083L,
+  0.99483340496284948345969144891145513965L,
+  0.362072360280863974302182899205431874295L,
+  0.89135316959373017710710890812308229361L,
+  0.861008403776277958081202417380537907424L,
+  0.518258469677886348298849030872657409393L,
+  0.74995117457421590827489329835282465567L,
+  0.141688060236646135992059548400562463963L,
+  0.231055693687838328234866575264314255906L,
+  0.128367320195147852998795956530756587271L,
+  0.735643745226188370911313880883935933086L,
+  0.481951681233521227023903083881246017963L,
+  0.29797778097740396719094352844253033076L,
+  0.259026843185033526978277511857498182853L,
+  0.76454793636766387350530239448634042225L,
+  0.921742101320371872828332060575170679558L,
+  0.135594574885855893452962438848740230435L,
+  0.249482789438500604376469100084029356821L,
+  0.447893460512394580798054060401740249162L,
+  0.841167533365717681130523968098862274883L,
+  0.063885342343669943206116658917625959392L,
+  0.49268569222220133343083683720155184169L,
+  0.0320364278163828327673837310979596079469L,
+  0.83067006037141488187036282222404336846L,
+  0.32687090604018629599351990634445890267L,
+  0.524229581985562678867475657633756672726L,
+  0.26442137331545990230136529620604338964L,
+  0.1804465247704923307363156457827584866855L,
+  0.219897692414720290686302976466475627349L,
+  0.657372240957848561373923532613997515665L,
+  0.94917951707325275578037456019158874452L,
+  0.999935336870950506894538846120127792282L,
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+  0.687921673269487018193347305425182239764L,
+  0.470940334348984370262797433659013738143L,
+  0.1592476430730276812200821020958787823795L,
+  0.296776110696565927524970058176467314578L,
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+  0.579194717868638955003571989739802264354L,
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+  0.419526107681583337049761526455092560735L,
+  0.00688594806937144144337797612615981618743L,
+  0.931682704636487927763651991274577493318L,
+  0.660524215847727125058815911433184924133L,
+  0.71780972384903067744609138100002205676L,
+  0.02961791918271995070621856302848439458175L,
+  0.692791206212428997136050006631240567502L,
+  0.162762426697948445642880183096693062538L,
+  0.183637795551464341949019870428026949035L,
+  0.51263789620316407488619761125039609046L,
+  0.90238698122728366178818828411640824056L,
+  0.229784208410123517024401367798925386038L,
+  0.227218480059027721044118324890061381517L,
+  0.6555059570778176955459672492237825867L,
+  0.929815767583615624563413584598741896834L,
+  0.188559597559312695774663933876436875041L,
+  0.396184448063913762028147791554346199354L,
+  0.656329540957568516760105602115555736073L,
+  0.1410678455413176345310401990667063246115L,
+  0.621004667838855651847651367745487628637L,
+  0.01277988784767030635209958407461792778387L,
+  0.69482142276844418673788732511112265014L,
+  0.925705031133221932065307191539105635005L,
+  0.925744341385232535963050430363763081603L,
+  0.24189467813699258571134382505828701386L,
+  0.646009544609703485845605410919901799L,
+  0.051119212999532673562206731603906295406L,
+  0.85076142804383409765024452942896578158L
+};
diff --git a/gnulib-tests/sched_yield.c b/gnulib-tests/sched_yield.c
new file mode 100644
index 0000000..07964c7
--- /dev/null
+++ b/gnulib-tests/sched_yield.c
@@ -0,0 +1,46 @@
+/* Schedule other threads to run.
+   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <sched.h>
+
+#if (defined _WIN32 && ! defined __CYGWIN__) && USE_WINDOWS_THREADS
+/* Use Windows threads.  */
+
+# define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+# include <windows.h>
+
+int
+sched_yield (void)
+{
+  Sleep (0);
+  return 0;
+}
+
+#else
+/* Provide a dummy implementation for single-threaded applications.  */
+
+int
+sched_yield (void)
+{
+  return 0;
+}
+
+#endif
diff --git a/gnulib-tests/secure_getenv.c b/gnulib-tests/secure_getenv.c
new file mode 100644
index 0000000..d39f682
--- /dev/null
+++ b/gnulib-tests/secure_getenv.c
@@ -0,0 +1,54 @@
+/* Look up an environment variable, returning NULL in insecure situations.
+
+   Copyright 2013-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#if !HAVE___SECURE_GETENV
+# if HAVE_ISSETUGID || (HAVE_GETUID && HAVE_GETEUID && HAVE_GETGID && HAVE_GETEGID)
+#  include <unistd.h>
+# endif
+#endif
+
+char *
+secure_getenv (char const *name)
+{
+#if HAVE___SECURE_GETENV /* glibc */
+  return __secure_getenv (name);
+#elif HAVE_ISSETUGID /* OS X, FreeBSD, NetBSD, OpenBSD */
+  if (issetugid ())
+    return NULL;
+  return getenv (name);
+#elif HAVE_GETUID && HAVE_GETEUID && HAVE_GETGID && HAVE_GETEGID /* other Unix */
+  if (geteuid () != getuid () || getegid () != getgid ())
+    return NULL;
+  return getenv (name);
+#elif defined _WIN32 && ! defined __CYGWIN__ /* native Windows */
+  /* On native Windows, there is no such concept as setuid or setgid binaries.
+     - Programs launched as system services have high privileges, but they don't
+       inherit environment variables from a user.
+     - Programs launched by a user with "Run as Administrator" have high
+       privileges and use the environment variables, but the user has been asked
+       whether he agrees.
+     - Programs launched by a user without "Run as Administrator" cannot gain
+       high privileges, therefore there is no risk. */
+  return getenv (name);
+#else
+  return NULL;
+#endif
+}
diff --git a/gnulib-tests/setlocale.c b/gnulib-tests/setlocale.c
new file mode 100644
index 0000000..f4141be
--- /dev/null
+++ b/gnulib-tests/setlocale.c
@@ -0,0 +1,1673 @@
+/* Set the current locale.  -*- coding: utf-8 -*-
+   Copyright (C) 2009, 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+/* Override setlocale() so that when the default locale is requested
+   (locale = ""), the environment variables LC_ALL, LC_*, and LANG are
+   considered.
+   Also include all the functionality from libintl's setlocale() override.  */
+
+/* Please keep this file in sync with
+   gettext/gettext-runtime/intl/setlocale.c !  */
+
+/* Specification.  */
+#include <locale.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "localename.h"
+
+#if HAVE_CFLOCALECOPYPREFERREDLANGUAGES || HAVE_CFPREFERENCESCOPYAPPVALUE
+# if HAVE_CFLOCALECOPYPREFERREDLANGUAGES
+#  include <CoreFoundation/CFLocale.h>
+# elif HAVE_CFPREFERENCESCOPYAPPVALUE
+#  include <CoreFoundation/CFPreferences.h>
+# endif
+# include <CoreFoundation/CFPropertyList.h>
+# include <CoreFoundation/CFArray.h>
+# include <CoreFoundation/CFString.h>
+extern void gl_locale_name_canonicalize (char *name);
+#endif
+
+#if 1
+
+# undef setlocale
+
+/* Which of the replacements to activate?  */
+# if NEED_SETLOCALE_IMPROVED
+#  define setlocale_improved rpl_setlocale
+# elif NEED_SETLOCALE_MTSAFE
+#  define setlocale_mtsafe rpl_setlocale
+# else
+#  error "This file should only be compiled if NEED_SETLOCALE_IMPROVED || NEED_SETLOCALE_MTSAFE."
+# endif
+
+/* Like setlocale, but guaranteed to be multithread-safe if LOCALE == NULL.  */
+# if !SETLOCALE_NULL_ALL_MTSAFE || !SETLOCALE_NULL_ONE_MTSAFE /* i.e. if NEED_SETLOCALE_MTSAFE */
+
+#  if NEED_SETLOCALE_IMPROVED
+static
+#  endif
+char *
+setlocale_mtsafe (int category, const char *locale)
+{
+  if (locale == NULL)
+    return (char *) setlocale_null (category);
+  else
+    return setlocale (category, locale);
+}
+# else /* !NEED_SETLOCALE_MTSAFE */
+
+#  define setlocale_mtsafe setlocale
+
+# endif /* NEED_SETLOCALE_MTSAFE */
+
+# if NEED_SETLOCALE_IMPROVED
+
+/* Return string representation of locale category CATEGORY.  */
+static const char *
+category_to_name (int category)
+{
+  const char *retval;
+
+  switch (category)
+  {
+  case LC_COLLATE:
+    retval = "LC_COLLATE";
+    break;
+  case LC_CTYPE:
+    retval = "LC_CTYPE";
+    break;
+  case LC_MONETARY:
+    retval = "LC_MONETARY";
+    break;
+  case LC_NUMERIC:
+    retval = "LC_NUMERIC";
+    break;
+  case LC_TIME:
+    retval = "LC_TIME";
+    break;
+  case LC_MESSAGES:
+    retval = "LC_MESSAGES";
+    break;
+  default:
+    /* If you have a better idea for a default value let me know.  */
+    retval = "LC_XXX";
+  }
+
+  return retval;
+}
+
+#  if defined _WIN32 && ! defined __CYGWIN__
+
+/* The native Windows setlocale() function expects locale names of the form
+   "German" or "German_Germany" or "DEU", but not "de" or "de_DE".  We need
+   to convert the names from the form with ISO 639 language code and ISO 3166
+   country code to the form with English names or with three-letter identifier.
+   The three-letter identifiers known by a Windows XP SP2 or SP3 are:
+     AFK  Afrikaans_South Africa.1252
+     ARA  Arabic_Saudi Arabia.1256
+     ARB  Arabic_Lebanon.1256
+     ARE  Arabic_Egypt.1256
+     ARG  Arabic_Algeria.1256
+     ARH  Arabic_Bahrain.1256
+     ARI  Arabic_Iraq.1256
+     ARJ  Arabic_Jordan.1256
+     ARK  Arabic_Kuwait.1256
+     ARL  Arabic_Libya.1256
+     ARM  Arabic_Morocco.1256
+     ARO  Arabic_Oman.1256
+     ARQ  Arabic_Qatar.1256
+     ARS  Arabic_Syria.1256
+     ART  Arabic_Tunisia.1256
+     ARU  Arabic_U.A.E..1256
+     ARY  Arabic_Yemen.1256
+     AZE  Azeri (Latin)_Azerbaijan.1254
+     BEL  Belarusian_Belarus.1251
+     BGR  Bulgarian_Bulgaria.1251
+     BSB  Bosnian_Bosnia and Herzegovina.1250
+     BSC  Bosnian (Cyrillic)_Bosnia and Herzegovina.1250  (wrong encoding!)
+     CAT  Catalan_Spain.1252
+     CHH  Chinese_Hong Kong S.A.R..950
+     CHI  Chinese_Singapore.936
+     CHS  Chinese_People's Republic of China.936
+     CHT  Chinese_Taiwan.950
+     CSY  Czech_Czech Republic.1250
+     CYM  Welsh_United Kingdom.1252
+     DAN  Danish_Denmark.1252
+     DEA  German_Austria.1252
+     DEC  German_Liechtenstein.1252
+     DEL  German_Luxembourg.1252
+     DES  German_Switzerland.1252
+     DEU  German_Germany.1252
+     ELL  Greek_Greece.1253
+     ENA  English_Australia.1252
+     ENB  English_Caribbean.1252
+     ENC  English_Canada.1252
+     ENG  English_United Kingdom.1252
+     ENI  English_Ireland.1252
+     ENJ  English_Jamaica.1252
+     ENL  English_Belize.1252
+     ENP  English_Republic of the Philippines.1252
+     ENS  English_South Africa.1252
+     ENT  English_Trinidad and Tobago.1252
+     ENU  English_United States.1252
+     ENW  English_Zimbabwe.1252
+     ENZ  English_New Zealand.1252
+     ESA  Spanish_Panama.1252
+     ESB  Spanish_Bolivia.1252
+     ESC  Spanish_Costa Rica.1252
+     ESD  Spanish_Dominican Republic.1252
+     ESE  Spanish_El Salvador.1252
+     ESF  Spanish_Ecuador.1252
+     ESG  Spanish_Guatemala.1252
+     ESH  Spanish_Honduras.1252
+     ESI  Spanish_Nicaragua.1252
+     ESL  Spanish_Chile.1252
+     ESM  Spanish_Mexico.1252
+     ESN  Spanish_Spain.1252
+     ESO  Spanish_Colombia.1252
+     ESP  Spanish_Spain.1252
+     ESR  Spanish_Peru.1252
+     ESS  Spanish_Argentina.1252
+     ESU  Spanish_Puerto Rico.1252
+     ESV  Spanish_Venezuela.1252
+     ESY  Spanish_Uruguay.1252
+     ESZ  Spanish_Paraguay.1252
+     ETI  Estonian_Estonia.1257
+     EUQ  Basque_Spain.1252
+     FAR  Farsi_Iran.1256
+     FIN  Finnish_Finland.1252
+     FOS  Faroese_Faroe Islands.1252
+     FPO  Filipino_Philippines.1252
+     FRA  French_France.1252
+     FRB  French_Belgium.1252
+     FRC  French_Canada.1252
+     FRL  French_Luxembourg.1252
+     FRM  French_Principality of Monaco.1252
+     FRS  French_Switzerland.1252
+     FYN  Frisian_Netherlands.1252
+     GLC  Galician_Spain.1252
+     HEB  Hebrew_Israel.1255
+     HRB  Croatian_Bosnia and Herzegovina.1250
+     HRV  Croatian_Croatia.1250
+     HUN  Hungarian_Hungary.1250
+     IND  Indonesian_Indonesia.1252
+     IRE  Irish_Ireland.1252
+     ISL  Icelandic_Iceland.1252
+     ITA  Italian_Italy.1252
+     ITS  Italian_Switzerland.1252
+     IUK  Inuktitut (Latin)_Canada.1252
+     JPN  Japanese_Japan.932
+     KKZ  Kazakh_Kazakhstan.1251
+     KOR  Korean_Korea.949
+     KYR  Kyrgyz_Kyrgyzstan.1251
+     LBX  Luxembourgish_Luxembourg.1252
+     LTH  Lithuanian_Lithuania.1257
+     LVI  Latvian_Latvia.1257
+     MKI  FYRO Macedonian_Former Yugoslav Republic of Macedonia.1251
+     MON  Mongolian_Mongolia.1251
+     MPD  Mapudungun_Chile.1252
+     MSB  Malay_Brunei Darussalam.1252
+     MSL  Malay_Malaysia.1252
+     MWK  Mohawk_Canada.1252
+     NLB  Dutch_Belgium.1252
+     NLD  Dutch_Netherlands.1252
+     NON  Norwegian-Nynorsk_Norway.1252
+     NOR  Norwegian (Bokmål)_Norway.1252
+     NSO  Northern Sotho_South Africa.1252
+     PLK  Polish_Poland.1250
+     PTB  Portuguese_Brazil.1252
+     PTG  Portuguese_Portugal.1252
+     QUB  Quechua_Bolivia.1252
+     QUE  Quechua_Ecuador.1252
+     QUP  Quechua_Peru.1252
+     RMC  Romansh_Switzerland.1252
+     ROM  Romanian_Romania.1250
+     RUS  Russian_Russia.1251
+     SKY  Slovak_Slovakia.1250
+     SLV  Slovenian_Slovenia.1250
+     SMA  Sami (Southern)_Norway.1252
+     SMB  Sami (Southern)_Sweden.1252
+     SME  Sami (Northern)_Norway.1252
+     SMF  Sami (Northern)_Sweden.1252
+     SMG  Sami (Northern)_Finland.1252
+     SMJ  Sami (Lule)_Norway.1252
+     SMK  Sami (Lule)_Sweden.1252
+     SMN  Sami (Inari)_Finland.1252
+     SMS  Sami (Skolt)_Finland.1252
+     SQI  Albanian_Albania.1250
+     SRB  Serbian (Cyrillic)_Serbia and Montenegro.1251
+     SRL  Serbian (Latin)_Serbia and Montenegro.1250
+     SRN  Serbian (Cyrillic)_Bosnia and Herzegovina.1251
+     SRS  Serbian (Latin)_Bosnia and Herzegovina.1250
+     SVE  Swedish_Sweden.1252
+     SVF  Swedish_Finland.1252
+     SWK  Swahili_Kenya.1252
+     THA  Thai_Thailand.874
+     TRK  Turkish_Turkey.1254
+     TSN  Tswana_South Africa.1252
+     TTT  Tatar_Russia.1251
+     UKR  Ukrainian_Ukraine.1251
+     URD  Urdu_Islamic Republic of Pakistan.1256
+     USA  English_United States.1252
+     UZB  Uzbek (Latin)_Uzbekistan.1254
+     VIT  Vietnamese_Viet Nam.1258
+     XHO  Xhosa_South Africa.1252
+     ZHH  Chinese_Hong Kong S.A.R..950
+     ZHI  Chinese_Singapore.936
+     ZHM  Chinese_Macau S.A.R..950
+     ZUL  Zulu_South Africa.1252
+ */
+
+/* Table from ISO 639 language code, optionally with country or script suffix,
+   to English name.
+   Keep in sync with the gl_locale_name_from_win32_LANGID function in
+   localename.c!  */
+struct table_entry
+{
+  const char *code;
+  const char *english;
+};
+static const struct table_entry language_table[] =
+  {
+    { "af", "Afrikaans" },
+    { "am", "Amharic" },
+    { "ar", "Arabic" },
+    { "arn", "Mapudungun" },
+    { "as", "Assamese" },
+    { "az@cyrillic", "Azeri (Cyrillic)" },
+    { "az@latin", "Azeri (Latin)" },
+    { "ba", "Bashkir" },
+    { "be", "Belarusian" },
+    { "ber", "Tamazight" },
+    { "ber@arabic", "Tamazight (Arabic)" },
+    { "ber@latin", "Tamazight (Latin)" },
+    { "bg", "Bulgarian" },
+    { "bin", "Edo" },
+    { "bn", "Bengali" },
+    { "bn_BD", "Bengali (Bangladesh)" },
+    { "bn_IN", "Bengali (India)" },
+    { "bnt", "Sutu" },
+    { "bo", "Tibetan" },
+    { "br", "Breton" },
+    { "bs", "BSB" }, /* "Bosnian (Latin)" */
+    { "bs@cyrillic", "BSC" }, /* Bosnian (Cyrillic) */
+    { "ca", "Catalan" },
+    { "chr", "Cherokee" },
+    { "co", "Corsican" },
+    { "cpe", "Hawaiian" },
+    { "cs", "Czech" },
+    { "cy", "Welsh" },
+    { "da", "Danish" },
+    { "de", "German" },
+    { "dsb", "Lower Sorbian" },
+    { "dv", "Divehi" },
+    { "el", "Greek" },
+    { "en", "English" },
+    { "es", "Spanish" },
+    { "et", "Estonian" },
+    { "eu", "Basque" },
+    { "fa", "Farsi" },
+    { "ff", "Fulfulde" },
+    { "fi", "Finnish" },
+    { "fo", "Faroese" }, /* "Faeroese" does not work */
+    { "fr", "French" },
+    { "fy", "Frisian" },
+    { "ga", "IRE" }, /* Gaelic (Ireland) */
+    { "gd", "Gaelic (Scotland)" },
+    { "gd", "Scottish Gaelic" },
+    { "gl", "Galician" },
+    { "gn", "Guarani" },
+    { "gsw", "Alsatian" },
+    { "gu", "Gujarati" },
+    { "ha", "Hausa" },
+    { "he", "Hebrew" },
+    { "hi", "Hindi" },
+    { "hr", "Croatian" },
+    { "hsb", "Upper Sorbian" },
+    { "hu", "Hungarian" },
+    { "hy", "Armenian" },
+    { "id", "Indonesian" },
+    { "ig", "Igbo" },
+    { "ii", "Yi" },
+    { "is", "Icelandic" },
+    { "it", "Italian" },
+    { "iu", "IUK" }, /* Inuktitut */
+    { "ja", "Japanese" },
+    { "ka", "Georgian" },
+    { "kk", "Kazakh" },
+    { "kl", "Greenlandic" },
+    { "km", "Cambodian" },
+    { "km", "Khmer" },
+    { "kn", "Kannada" },
+    { "ko", "Korean" },
+    { "kok", "Konkani" },
+    { "kr", "Kanuri" },
+    { "ks", "Kashmiri" },
+    { "ks_IN", "Kashmiri_India" },
+    { "ks_PK", "Kashmiri (Arabic)_Pakistan" },
+    { "ky", "Kyrgyz" },
+    { "la", "Latin" },
+    { "lb", "Luxembourgish" },
+    { "lo", "Lao" },
+    { "lt", "Lithuanian" },
+    { "lv", "Latvian" },
+    { "mi", "Maori" },
+    { "mk", "FYRO Macedonian" },
+    { "mk", "Macedonian" },
+    { "ml", "Malayalam" },
+    { "mn", "Mongolian" },
+    { "mni", "Manipuri" },
+    { "moh", "Mohawk" },
+    { "mr", "Marathi" },
+    { "ms", "Malay" },
+    { "mt", "Maltese" },
+    { "my", "Burmese" },
+    { "nb", "NOR" }, /* Norwegian Bokmål */
+    { "ne", "Nepali" },
+    { "nic", "Ibibio" },
+    { "nl", "Dutch" },
+    { "nn", "NON" }, /* Norwegian Nynorsk */
+    { "no", "Norwegian" },
+    { "nso", "Northern Sotho" },
+    { "nso", "Sepedi" },
+    { "oc", "Occitan" },
+    { "om", "Oromo" },
+    { "or", "Oriya" },
+    { "pa", "Punjabi" },
+    { "pap", "Papiamentu" },
+    { "pl", "Polish" },
+    { "prs", "Dari" },
+    { "ps", "Pashto" },
+    { "pt", "Portuguese" },
+    { "qu", "Quechua" },
+    { "qut", "K'iche'" },
+    { "rm", "Romansh" },
+    { "ro", "Romanian" },
+    { "ru", "Russian" },
+    { "rw", "Kinyarwanda" },
+    { "sa", "Sanskrit" },
+    { "sah", "Yakut" },
+    { "sd", "Sindhi" },
+    { "se", "Sami (Northern)" },
+    { "se", "Northern Sami" },
+    { "si", "Sinhalese" },
+    { "sk", "Slovak" },
+    { "sl", "Slovenian" },
+    { "sma", "Sami (Southern)" },
+    { "sma", "Southern Sami" },
+    { "smj", "Sami (Lule)" },
+    { "smj", "Lule Sami" },
+    { "smn", "Sami (Inari)" },
+    { "smn", "Inari Sami" },
+    { "sms", "Sami (Skolt)" },
+    { "sms", "Skolt Sami" },
+    { "so", "Somali" },
+    { "sq", "Albanian" },
+    { "sr", "Serbian (Latin)" },
+    { "sr@cyrillic", "SRB" }, /* Serbian (Cyrillic) */
+    { "sv", "Swedish" },
+    { "sw", "Swahili" },
+    { "syr", "Syriac" },
+    { "ta", "Tamil" },
+    { "te", "Telugu" },
+    { "tg", "Tajik" },
+    { "th", "Thai" },
+    { "ti", "Tigrinya" },
+    { "tk", "Turkmen" },
+    { "tl", "Filipino" },
+    { "tn", "Tswana" },
+    { "tr", "Turkish" },
+    { "ts", "Tsonga" },
+    { "tt", "Tatar" },
+    { "ug", "Uighur" },
+    { "uk", "Ukrainian" },
+    { "ur", "Urdu" },
+    { "uz", "Uzbek" },
+    { "uz", "Uzbek (Latin)" },
+    { "uz@cyrillic", "Uzbek (Cyrillic)" },
+    { "ve", "Venda" },
+    { "vi", "Vietnamese" },
+    { "wen", "Sorbian" },
+    { "wo", "Wolof" },
+    { "xh", "Xhosa" },
+    { "yi", "Yiddish" },
+    { "yo", "Yoruba" },
+    { "zh", "Chinese" },
+    { "zu", "Zulu" }
+  };
+
+/* Table from ISO 3166 country code to English name.
+   Keep in sync with the gl_locale_name_from_win32_LANGID function in
+   localename.c!  */
+static const struct table_entry country_table[] =
+  {
+    { "AE", "U.A.E." },
+    { "AF", "Afghanistan" },
+    { "AL", "Albania" },
+    { "AM", "Armenia" },
+    { "AN", "Netherlands Antilles" },
+    { "AR", "Argentina" },
+    { "AT", "Austria" },
+    { "AU", "Australia" },
+    { "AZ", "Azerbaijan" },
+    { "BA", "Bosnia and Herzegovina" },
+    { "BD", "Bangladesh" },
+    { "BE", "Belgium" },
+    { "BG", "Bulgaria" },
+    { "BH", "Bahrain" },
+    { "BN", "Brunei Darussalam" },
+    { "BO", "Bolivia" },
+    { "BR", "Brazil" },
+    { "BT", "Bhutan" },
+    { "BY", "Belarus" },
+    { "BZ", "Belize" },
+    { "CA", "Canada" },
+    { "CG", "Congo" },
+    { "CH", "Switzerland" },
+    { "CI", "Cote d'Ivoire" },
+    { "CL", "Chile" },
+    { "CM", "Cameroon" },
+    { "CN", "People's Republic of China" },
+    { "CO", "Colombia" },
+    { "CR", "Costa Rica" },
+    { "CS", "Serbia and Montenegro" },
+    { "CZ", "Czech Republic" },
+    { "DE", "Germany" },
+    { "DK", "Denmark" },
+    { "DO", "Dominican Republic" },
+    { "DZ", "Algeria" },
+    { "EC", "Ecuador" },
+    { "EE", "Estonia" },
+    { "EG", "Egypt" },
+    { "ER", "Eritrea" },
+    { "ES", "Spain" },
+    { "ET", "Ethiopia" },
+    { "FI", "Finland" },
+    { "FO", "Faroe Islands" },
+    { "FR", "France" },
+    { "GB", "United Kingdom" },
+    { "GD", "Caribbean" },
+    { "GE", "Georgia" },
+    { "GL", "Greenland" },
+    { "GR", "Greece" },
+    { "GT", "Guatemala" },
+    { "HK", "Hong Kong" },
+    { "HK", "Hong Kong S.A.R." },
+    { "HN", "Honduras" },
+    { "HR", "Croatia" },
+    { "HT", "Haiti" },
+    { "HU", "Hungary" },
+    { "ID", "Indonesia" },
+    { "IE", "Ireland" },
+    { "IL", "Israel" },
+    { "IN", "India" },
+    { "IQ", "Iraq" },
+    { "IR", "Iran" },
+    { "IS", "Iceland" },
+    { "IT", "Italy" },
+    { "JM", "Jamaica" },
+    { "JO", "Jordan" },
+    { "JP", "Japan" },
+    { "KE", "Kenya" },
+    { "KG", "Kyrgyzstan" },
+    { "KH", "Cambodia" },
+    { "KR", "South Korea" },
+    { "KW", "Kuwait" },
+    { "KZ", "Kazakhstan" },
+    { "LA", "Laos" },
+    { "LB", "Lebanon" },
+    { "LI", "Liechtenstein" },
+    { "LK", "Sri Lanka" },
+    { "LT", "Lithuania" },
+    { "LU", "Luxembourg" },
+    { "LV", "Latvia" },
+    { "LY", "Libya" },
+    { "MA", "Morocco" },
+    { "MC", "Principality of Monaco" },
+    { "MD", "Moldava" },
+    { "MD", "Moldova" },
+    { "ME", "Montenegro" },
+    { "MK", "Former Yugoslav Republic of Macedonia" },
+    { "ML", "Mali" },
+    { "MM", "Myanmar" },
+    { "MN", "Mongolia" },
+    { "MO", "Macau S.A.R." },
+    { "MT", "Malta" },
+    { "MV", "Maldives" },
+    { "MX", "Mexico" },
+    { "MY", "Malaysia" },
+    { "NG", "Nigeria" },
+    { "NI", "Nicaragua" },
+    { "NL", "Netherlands" },
+    { "NO", "Norway" },
+    { "NP", "Nepal" },
+    { "NZ", "New Zealand" },
+    { "OM", "Oman" },
+    { "PA", "Panama" },
+    { "PE", "Peru" },
+    { "PH", "Philippines" },
+    { "PK", "Islamic Republic of Pakistan" },
+    { "PL", "Poland" },
+    { "PR", "Puerto Rico" },
+    { "PT", "Portugal" },
+    { "PY", "Paraguay" },
+    { "QA", "Qatar" },
+    { "RE", "Reunion" },
+    { "RO", "Romania" },
+    { "RS", "Serbia" },
+    { "RU", "Russia" },
+    { "RW", "Rwanda" },
+    { "SA", "Saudi Arabia" },
+    { "SE", "Sweden" },
+    { "SG", "Singapore" },
+    { "SI", "Slovenia" },
+    { "SK", "Slovak" },
+    { "SN", "Senegal" },
+    { "SO", "Somalia" },
+    { "SR", "Suriname" },
+    { "SV", "El Salvador" },
+    { "SY", "Syria" },
+    { "TH", "Thailand" },
+    { "TJ", "Tajikistan" },
+    { "TM", "Turkmenistan" },
+    { "TN", "Tunisia" },
+    { "TR", "Turkey" },
+    { "TT", "Trinidad and Tobago" },
+    { "TW", "Taiwan" },
+    { "TZ", "Tanzania" },
+    { "UA", "Ukraine" },
+    { "US", "United States" },
+    { "UY", "Uruguay" },
+    { "VA", "Vatican" },
+    { "VE", "Venezuela" },
+    { "VN", "Viet Nam" },
+    { "YE", "Yemen" },
+    { "ZA", "South Africa" },
+    { "ZW", "Zimbabwe" }
+  };
+
+/* Given a string STRING, find the set of indices i such that TABLE[i].code is
+   the given STRING.  It is a range [lo,hi-1].  */
+typedef struct { size_t lo; size_t hi; } range_t;
+static void
+search (const struct table_entry *table, size_t table_size, const char *string,
+        range_t *result)
+{
+  /* The table is sorted.  Perform a binary search.  */
+  size_t hi = table_size;
+  size_t lo = 0;
+  while (lo < hi)
+    {
+      /* Invariant:
+         for i < lo, strcmp (table[i].code, string) < 0,
+         for i >= hi, strcmp (table[i].code, string) > 0.  */
+      size_t mid = (hi + lo) >> 1; /* >= lo, < hi */
+      int cmp = strcmp (table[mid].code, string);
+      if (cmp < 0)
+        lo = mid + 1;
+      else if (cmp > 0)
+        hi = mid;
+      else
+        {
+          /* Found an i with
+               strcmp (language_table[i].code, string) == 0.
+             Find the entire interval of such i.  */
+          {
+            size_t i;
+
+            for (i = mid; i > lo; )
+              {
+                i--;
+                if (strcmp (table[i].code, string) < 0)
+                  {
+                    lo = i + 1;
+                    break;
+                  }
+              }
+          }
+          {
+            size_t i;
+
+            for (i = mid + 1; i < hi; i++)
+              {
+                if (strcmp (table[i].code, string) > 0)
+                  {
+                    hi = i;
+                    break;
+                  }
+              }
+          }
+          /* The set of i with
+               strcmp (language_table[i].code, string) == 0
+             is the interval [lo, hi-1].  */
+          break;
+        }
+    }
+  result->lo = lo;
+  result->hi = hi;
+}
+
+/* Like setlocale, but accept also locale names in the form ll or ll_CC,
+   where ll is an ISO 639 language code and CC is an ISO 3166 country code.  */
+static char *
+setlocale_unixlike (int category, const char *locale)
+{
+  char *result;
+  char llCC_buf[64];
+  char ll_buf[64];
+  char CC_buf[64];
+
+  /* The native Windows implementation of setlocale understands the special
+     locale name "C", but not "POSIX".  Therefore map "POSIX" to "C".  */
+  if (locale != NULL && strcmp (locale, "POSIX") == 0)
+    locale = "C";
+
+  /* First, try setlocale with the original argument unchanged.  */
+  result = setlocale_mtsafe (category, locale);
+  if (result != NULL)
+    return result;
+
+  /* Otherwise, assume the argument is in the form
+       language[_territory][.codeset][@modifier]
+     and try to map it using the tables.  */
+  if (strlen (locale) < sizeof (llCC_buf))
+    {
+      /* Second try: Remove the codeset part.  */
+      {
+        const char *p = locale;
+        char *q = llCC_buf;
+
+        /* Copy the part before the dot.  */
+        for (; *p != '\0' && *p != '.'; p++, q++)
+          *q = *p;
+        if (*p == '.')
+          /* Skip the part up to the '@', if any.  */
+          for (; *p != '\0' && *p != '@'; p++)
+            ;
+        /* Copy the part starting with '@', if any.  */
+        for (; *p != '\0'; p++, q++)
+          *q = *p;
+        *q = '\0';
+      }
+      /* llCC_buf now contains
+           language[_territory][@modifier]
+       */
+      if (strcmp (llCC_buf, locale) != 0)
+        {
+          result = setlocale (category, llCC_buf);
+          if (result != NULL)
+            return result;
+        }
+      /* Look it up in language_table.  */
+      {
+        range_t range;
+        size_t i;
+
+        search (language_table,
+                sizeof (language_table) / sizeof (language_table[0]),
+                llCC_buf,
+                &range);
+
+        for (i = range.lo; i < range.hi; i++)
+          {
+            /* Try the replacement in language_table[i].  */
+            result = setlocale (category, language_table[i].english);
+            if (result != NULL)
+              return result;
+          }
+      }
+      /* Split language[_territory][@modifier]
+         into  ll_buf = language[@modifier]
+         and   CC_buf = territory
+       */
+      {
+        const char *underscore = strchr (llCC_buf, '_');
+        if (underscore != NULL)
+          {
+            const char *territory_start = underscore + 1;
+            const char *territory_end = strchr (territory_start, '@');
+            if (territory_end == NULL)
+              territory_end = territory_start + strlen (territory_start);
+
+            memcpy (ll_buf, llCC_buf, underscore - llCC_buf);
+            strcpy (ll_buf + (underscore - llCC_buf), territory_end);
+
+            memcpy (CC_buf, territory_start, territory_end - territory_start);
+            CC_buf[territory_end - territory_start] = '\0';
+
+            {
+              /* Look up ll_buf in language_table
+                 and CC_buf in country_table.  */
+              range_t language_range;
+
+              search (language_table,
+                      sizeof (language_table) / sizeof (language_table[0]),
+                      ll_buf,
+                      &language_range);
+              if (language_range.lo < language_range.hi)
+                {
+                  range_t country_range;
+
+                  search (country_table,
+                          sizeof (country_table) / sizeof (country_table[0]),
+                          CC_buf,
+                          &country_range);
+                  if (country_range.lo < country_range.hi)
+                    {
+                      size_t i;
+                      size_t j;
+
+                      for (i = language_range.lo; i < language_range.hi; i++)
+                        for (j = country_range.lo; j < country_range.hi; j++)
+                          {
+                            /* Concatenate the replacements.  */
+                            const char *part1 = language_table[i].english;
+                            size_t part1_len = strlen (part1);
+                            const char *part2 = country_table[j].english;
+                            size_t part2_len = strlen (part2) + 1;
+                            char buf[64+64];
+
+                            if (!(part1_len + 1 + part2_len <= sizeof (buf)))
+                              abort ();
+                            memcpy (buf, part1, part1_len);
+                            buf[part1_len] = '_';
+                            memcpy (buf + part1_len + 1, part2, part2_len);
+
+                            /* Try the concatenated replacements.  */
+                            result = setlocale (category, buf);
+                            if (result != NULL)
+                              return result;
+                          }
+                    }
+
+                  /* Try omitting the country entirely.  This may set a locale
+                     corresponding to the wrong country, but is better than
+                     failing entirely.  */
+                  {
+                    size_t i;
+
+                    for (i = language_range.lo; i < language_range.hi; i++)
+                      {
+                        /* Try only the language replacement.  */
+                        result =
+                          setlocale (category, language_table[i].english);
+                        if (result != NULL)
+                          return result;
+                      }
+                  }
+                }
+            }
+          }
+      }
+    }
+
+  /* Failed.  */
+  return NULL;
+}
+
+#  elif defined __ANDROID__
+
+/* Like setlocale, but accept also the locale names "C" and "POSIX".  */
+static char *
+setlocale_unixlike (int category, const char *locale)
+{
+  char *result = setlocale_mtsafe (category, locale);
+  if (result == NULL)
+    switch (category)
+      {
+      case LC_CTYPE:
+      case LC_NUMERIC:
+      case LC_TIME:
+      case LC_COLLATE:
+      case LC_MONETARY:
+      case LC_MESSAGES:
+      case LC_ALL:
+      case LC_PAPER:
+      case LC_NAME:
+      case LC_ADDRESS:
+      case LC_TELEPHONE:
+      case LC_MEASUREMENT:
+        if (locale == NULL
+            || strcmp (locale, "C") == 0 || strcmp (locale, "POSIX") == 0)
+          result = (char *) "C";
+        break;
+      default:
+        break;
+      }
+  return result;
+}
+#   define setlocale setlocale_unixlike
+
+#  else
+#   define setlocale_unixlike setlocale_mtsafe
+#  endif
+
+#  if LC_MESSAGES == 1729
+
+/* The system does not store an LC_MESSAGES locale category.  Do it here.  */
+static char lc_messages_name[64] = "C";
+
+/* Like setlocale, but support also LC_MESSAGES.  */
+static char *
+setlocale_single (int category, const char *locale)
+{
+  if (category == LC_MESSAGES)
+    {
+      if (locale != NULL)
+        {
+          lc_messages_name[sizeof (lc_messages_name) - 1] = '\0';
+          strncpy (lc_messages_name, locale, sizeof (lc_messages_name) - 1);
+        }
+      return lc_messages_name;
+    }
+  else
+    return setlocale_unixlike (category, locale);
+}
+
+#  else
+#   define setlocale_single setlocale_unixlike
+#  endif
+
+#  if defined __APPLE__ && defined __MACH__
+
+/* Mapping from language to main territory where that language is spoken.  */
+static char const locales_with_principal_territory[][6 + 1] =
+  {
+                /* Language     Main territory */
+    "ace_ID",   /* Achinese     Indonesia */
+    "af_ZA",    /* Afrikaans    South Africa */
+    "ak_GH",    /* Akan         Ghana */
+    "am_ET",    /* Amharic      Ethiopia */
+    "an_ES",    /* Aragonese    Spain */
+    "ang_GB",   /* Old English  Britain */
+    "arn_CL",   /* Mapudungun   Chile */
+    "as_IN",    /* Assamese     India */
+    "ast_ES",   /* Asturian     Spain */
+    "av_RU",    /* Avaric       Russia */
+    "awa_IN",   /* Awadhi       India */
+    "az_AZ",    /* Azerbaijani  Azerbaijan */
+    "ban_ID",   /* Balinese     Indonesia */
+    "be_BY",    /* Belarusian   Belarus */
+    "bej_SD",   /* Beja         Sudan */
+    "bem_ZM",   /* Bemba        Zambia */
+    "bg_BG",    /* Bulgarian    Bulgaria */
+    "bho_IN",   /* Bhojpuri     India */
+    "bi_VU",    /* Bislama      Vanuatu */
+    "bik_PH",   /* Bikol        Philippines */
+    "bin_NG",   /* Bini         Nigeria */
+    "bm_ML",    /* Bambara      Mali */
+    "bn_IN",    /* Bengali      India */
+    "bo_CN",    /* Tibetan      China */
+    "br_FR",    /* Breton       France */
+    "bs_BA",    /* Bosnian      Bosnia */
+    "bug_ID",   /* Buginese     Indonesia */
+    "ca_ES",    /* Catalan      Spain */
+    "ce_RU",    /* Chechen      Russia */
+    "ceb_PH",   /* Cebuano      Philippines */
+    "co_FR",    /* Corsican     France */
+    "cr_CA",    /* Cree         Canada */
+    /* Don't put "crh_UZ" or "crh_UA" here.  That would be asking for fruitless
+       political discussion.  */
+    "cs_CZ",    /* Czech        Czech Republic */
+    "csb_PL",   /* Kashubian    Poland */
+    "cy_GB",    /* Welsh        Britain */
+    "da_DK",    /* Danish       Denmark */
+    "de_DE",    /* German       Germany */
+    "din_SD",   /* Dinka        Sudan */
+    "doi_IN",   /* Dogri        India */
+    "dsb_DE",   /* Lower Sorbian        Germany */
+    "dv_MV",    /* Divehi       Maldives */
+    "dz_BT",    /* Dzongkha     Bhutan */
+    "ee_GH",    /* Éwé          Ghana */
+    "el_GR",    /* Greek        Greece */
+    /* Don't put "en_GB" or "en_US" here.  That would be asking for fruitless
+       political discussion.  */
+    "es_ES",    /* Spanish      Spain */
+    "et_EE",    /* Estonian     Estonia */
+    "fa_IR",    /* Persian      Iran */
+    "fi_FI",    /* Finnish      Finland */
+    "fil_PH",   /* Filipino     Philippines */
+    "fj_FJ",    /* Fijian       Fiji */
+    "fo_FO",    /* Faroese      Faeroe Islands */
+    "fon_BJ",   /* Fon          Benin */
+    "fr_FR",    /* French       France */
+    "fur_IT",   /* Friulian     Italy */
+    "fy_NL",    /* Western Frisian      Netherlands */
+    "ga_IE",    /* Irish        Ireland */
+    "gd_GB",    /* Scottish Gaelic      Britain */
+    "gon_IN",   /* Gondi        India */
+    "gsw_CH",   /* Swiss German Switzerland */
+    "gu_IN",    /* Gujarati     India */
+    "he_IL",    /* Hebrew       Israel */
+    "hi_IN",    /* Hindi        India */
+    "hil_PH",   /* Hiligaynon   Philippines */
+    "hr_HR",    /* Croatian     Croatia */
+    "hsb_DE",   /* Upper Sorbian        Germany */
+    "ht_HT",    /* Haitian      Haiti */
+    "hu_HU",    /* Hungarian    Hungary */
+    "hy_AM",    /* Armenian     Armenia */
+    "id_ID",    /* Indonesian   Indonesia */
+    "ig_NG",    /* Igbo         Nigeria */
+    "ii_CN",    /* Sichuan Yi   China */
+    "ilo_PH",   /* Iloko        Philippines */
+    "is_IS",    /* Icelandic    Iceland */
+    "it_IT",    /* Italian      Italy */
+    "ja_JP",    /* Japanese     Japan */
+    "jab_NG",   /* Hyam         Nigeria */
+    "jv_ID",    /* Javanese     Indonesia */
+    "ka_GE",    /* Georgian     Georgia */
+    "kab_DZ",   /* Kabyle       Algeria */
+    "kaj_NG",   /* Jju          Nigeria */
+    "kam_KE",   /* Kamba        Kenya */
+    "kmb_AO",   /* Kimbundu     Angola */
+    "kcg_NG",   /* Tyap         Nigeria */
+    "kdm_NG",   /* Kagoma       Nigeria */
+    "kg_CD",    /* Kongo        Democratic Republic of Congo */
+    "kk_KZ",    /* Kazakh       Kazakhstan */
+    "kl_GL",    /* Kalaallisut  Greenland */
+    "km_KH",    /* Central Khmer        Cambodia */
+    "kn_IN",    /* Kannada      India */
+    "ko_KR",    /* Korean       Korea (South) */
+    "kok_IN",   /* Konkani      India */
+    "kr_NG",    /* Kanuri       Nigeria */
+    "kru_IN",   /* Kurukh       India */
+    "ky_KG",    /* Kyrgyz       Kyrgyzstan */
+    "lg_UG",    /* Ganda        Uganda */
+    "li_BE",    /* Limburgish   Belgium */
+    "lo_LA",    /* Laotian      Laos */
+    "lt_LT",    /* Lithuanian   Lithuania */
+    "lu_CD",    /* Luba-Katanga Democratic Republic of Congo */
+    "lua_CD",   /* Luba-Lulua   Democratic Republic of Congo */
+    "luo_KE",   /* Luo          Kenya */
+    "lv_LV",    /* Latvian      Latvia */
+    "mad_ID",   /* Madurese     Indonesia */
+    "mag_IN",   /* Magahi       India */
+    "mai_IN",   /* Maithili     India */
+    "mak_ID",   /* Makasar      Indonesia */
+    "man_ML",   /* Mandingo     Mali */
+    "men_SL",   /* Mende        Sierra Leone */
+    "mfe_MU",   /* Mauritian Creole     Mauritius */
+    "mg_MG",    /* Malagasy     Madagascar */
+    "mi_NZ",    /* Maori        New Zealand */
+    "min_ID",   /* Minangkabau  Indonesia */
+    "mk_MK",    /* Macedonian   North Macedonia */
+    "ml_IN",    /* Malayalam    India */
+    "mn_MN",    /* Mongolian    Mongolia */
+    "mni_IN",   /* Manipuri     India */
+    "mos_BF",   /* Mossi        Burkina Faso */
+    "mr_IN",    /* Marathi      India */
+    "ms_MY",    /* Malay        Malaysia */
+    "mt_MT",    /* Maltese      Malta */
+    "mwr_IN",   /* Marwari      India */
+    "my_MM",    /* Burmese      Myanmar */
+    "na_NR",    /* Nauru        Nauru */
+    "nah_MX",   /* Nahuatl      Mexico */
+    "nap_IT",   /* Neapolitan   Italy */
+    "nb_NO",    /* Norwegian Bokmål    Norway */
+    "nds_DE",   /* Low Saxon    Germany */
+    "ne_NP",    /* Nepali       Nepal */
+    "nl_NL",    /* Dutch        Netherlands */
+    "nn_NO",    /* Norwegian Nynorsk    Norway */
+    "no_NO",    /* Norwegian    Norway */
+    "nr_ZA",    /* South Ndebele        South Africa */
+    "nso_ZA",   /* Northern Sotho       South Africa */
+    "ny_MW",    /* Chichewa     Malawi */
+    "nym_TZ",   /* Nyamwezi     Tanzania */
+    "nyn_UG",   /* Nyankole     Uganda */
+    "oc_FR",    /* Occitan      France */
+    "oj_CA",    /* Ojibwa       Canada */
+    "or_IN",    /* Oriya        India */
+    "pa_IN",    /* Punjabi      India */
+    "pag_PH",   /* Pangasinan   Philippines */
+    "pam_PH",   /* Pampanga     Philippines */
+    "pap_AN",   /* Papiamento   Netherlands Antilles - this line can be removed in 2018 */
+    "pbb_CO",   /* Páez         Colombia */
+    "pl_PL",    /* Polish       Poland */
+    "ps_AF",    /* Pashto       Afghanistan */
+    "pt_PT",    /* Portuguese   Portugal */
+    "raj_IN",   /* Rajasthani   India */
+    "rm_CH",    /* Romansh      Switzerland */
+    "rn_BI",    /* Kirundi      Burundi */
+    "ro_RO",    /* Romanian     Romania */
+    "ru_RU",    /* Russian      Russia */
+    "rw_RW",    /* Kinyarwanda  Rwanda */
+    "sa_IN",    /* Sanskrit     India */
+    "sah_RU",   /* Yakut        Russia */
+    "sas_ID",   /* Sasak        Indonesia */
+    "sat_IN",   /* Santali      India */
+    "sc_IT",    /* Sardinian    Italy */
+    "scn_IT",   /* Sicilian     Italy */
+    "sg_CF",    /* Sango        Central African Republic */
+    "shn_MM",   /* Shan         Myanmar */
+    "si_LK",    /* Sinhala      Sri Lanka */
+    "sid_ET",   /* Sidamo       Ethiopia */
+    "sk_SK",    /* Slovak       Slovakia */
+    "sl_SI",    /* Slovenian    Slovenia */
+    "sm_WS",    /* Samoan       Samoa */
+    "smn_FI",   /* Inari Sami   Finland */
+    "sms_FI",   /* Skolt Sami   Finland */
+    "so_SO",    /* Somali       Somalia */
+    "sq_AL",    /* Albanian     Albania */
+    "sr_RS",    /* Serbian      Serbia */
+    "srr_SN",   /* Serer        Senegal */
+    "suk_TZ",   /* Sukuma       Tanzania */
+    "sus_GN",   /* Susu         Guinea */
+    "sv_SE",    /* Swedish      Sweden */
+    "te_IN",    /* Telugu       India */
+    "tem_SL",   /* Timne        Sierra Leone */
+    "tet_ID",   /* Tetum        Indonesia */
+    "tg_TJ",    /* Tajik        Tajikistan */
+    "th_TH",    /* Thai         Thailand */
+    "ti_ER",    /* Tigrinya     Eritrea */
+    "tiv_NG",   /* Tiv          Nigeria */
+    "tk_TM",    /* Turkmen      Turkmenistan */
+    "tl_PH",    /* Tagalog      Philippines */
+    "to_TO",    /* Tonga        Tonga */
+    "tpi_PG",   /* Tok Pisin    Papua New Guinea */
+    "tr_TR",    /* Turkish      Turkey */
+    "tum_MW",   /* Tumbuka      Malawi */
+    "ug_CN",    /* Uighur       China */
+    "uk_UA",    /* Ukrainian    Ukraine */
+    "umb_AO",   /* Umbundu      Angola */
+    "ur_PK",    /* Urdu         Pakistan */
+    "uz_UZ",    /* Uzbek        Uzbekistan */
+    "ve_ZA",    /* Venda        South Africa */
+    "vi_VN",    /* Vietnamese   Vietnam */
+    "wa_BE",    /* Walloon      Belgium */
+    "wal_ET",   /* Walamo       Ethiopia */
+    "war_PH",   /* Waray        Philippines */
+    "wen_DE",   /* Sorbian      Germany */
+    "yao_MW",   /* Yao          Malawi */
+    "zap_MX"    /* Zapotec      Mexico */
+  };
+
+/* Compare just the language part of two locale names.  */
+static int
+langcmp (const char *locale1, const char *locale2)
+{
+  size_t locale1_len;
+  size_t locale2_len;
+  int cmp;
+
+  {
+    const char *locale1_end = strchr (locale1, '_');
+    if (locale1_end != NULL)
+      locale1_len = locale1_end - locale1;
+    else
+      locale1_len = strlen (locale1);
+  }
+  {
+    const char *locale2_end = strchr (locale2, '_');
+    if (locale2_end != NULL)
+      locale2_len = locale2_end - locale2;
+    else
+      locale2_len = strlen (locale2);
+  }
+
+  if (locale1_len < locale2_len)
+    {
+      cmp = memcmp (locale1, locale2, locale1_len);
+      if (cmp == 0)
+        cmp = -1;
+    }
+  else
+    {
+      cmp = memcmp (locale1, locale2, locale2_len);
+      if (locale1_len > locale2_len && cmp == 0)
+        cmp = 1;
+    }
+
+  return cmp;
+}
+
+/* Given a locale name, return the main locale with the same language,
+   or NULL if not found.
+   For example: "fr_DE" -> "fr_FR".  */
+static const char *
+get_main_locale_with_same_language (const char *locale)
+{
+#   define table locales_with_principal_territory
+  /* The table is sorted.  Perform a binary search.  */
+  size_t hi = sizeof (table) / sizeof (table[0]);
+  size_t lo = 0;
+  while (lo < hi)
+    {
+      /* Invariant:
+         for i < lo, langcmp (table[i], locale) < 0,
+         for i >= hi, langcmp (table[i], locale) > 0.  */
+      size_t mid = (hi + lo) >> 1; /* >= lo, < hi */
+      int cmp = langcmp (table[mid], locale);
+      if (cmp < 0)
+        lo = mid + 1;
+      else if (cmp > 0)
+        hi = mid;
+      else
+        {
+          /* Found an i with
+               langcmp (language_table[i], locale) == 0.
+             Verify that it is the only such i.  */
+          if (mid > lo && langcmp (table[mid - 1], locale) >= 0)
+            abort ();
+          if (mid + 1 < hi && langcmp (table[mid + 1], locale) <= 0)
+            abort ();
+          return table[mid];
+        }
+    }
+#   undef table
+  return NULL;
+}
+
+/* Mapping from territory to main language that is spoken in that territory.  */
+static char const locales_with_principal_language[][6 + 1] =
+  {
+    /* This is based on the set of existing locales in glibc, with duplicates
+       removed, and on the Wikipedia pages named "Languages of <territory>".
+       If in doubt, use the locale that exists in macOS.  For example, the only
+       "*_IN" locale in macOS 10.13 is "hi_IN", so use that.  */
+    /* A useful shell function for producing a line of this table is:
+         func_line ()
+         {
+           # Usage: func_line ll_CC
+           ll=`echo "$1" | sed -e 's|_.*||'`
+           cc=`echo "$1" | sed -e 's|^.*_||'`
+           llx=`sed -n -e "s|^${ll} ||p" < gettext-tools/doc/ISO_639`
+           ccx=`expand gettext-tools/doc/ISO_3166 | sed -n -e "s|^${cc}  *||p"`
+           echo "    \"$1\",    /$X* ${llx} ${ccx} *$X/"
+         }
+     */
+              /* Main language  Territory */
+    "ca_AD",    /* Catalan      Andorra */
+    "ar_AE",    /* Arabic       United Arab Emirates */
+    "ps_AF",    /* Pashto       Afghanistan */
+    "en_AG",    /* English      Antigua and Barbuda */
+    "sq_AL",    /* Albanian     Albania */
+    "hy_AM",    /* Armenian     Armenia */
+    "pap_AN",   /* Papiamento   Netherlands Antilles - this line can be removed in 2018 */
+    "pt_AO",    /* Portuguese   Angola */
+    "es_AR",    /* Spanish      Argentina */
+    "de_AT",    /* German       Austria */
+    "en_AU",    /* English      Australia */
+    /* Aruba has two official languages: "nl_AW", "pap_AW".  */
+    "az_AZ",    /* Azerbaijani  Azerbaijan */
+    "bs_BA",    /* Bosnian      Bosnia */
+    "bn_BD",    /* Bengali      Bangladesh */
+    "nl_BE",    /* Dutch        Belgium */
+    "fr_BF",    /* French       Burkina Faso */
+    "bg_BG",    /* Bulgarian    Bulgaria */
+    "ar_BH",    /* Arabic       Bahrain */
+    "rn_BI",    /* Kirundi      Burundi */
+    "fr_BJ",    /* French       Benin */
+    "es_BO",    /* Spanish      Bolivia */
+    "pt_BR",    /* Portuguese   Brazil */
+    "dz_BT",    /* Dzongkha     Bhutan */
+    "en_BW",    /* English      Botswana */
+    "be_BY",    /* Belarusian   Belarus */
+    "en_CA",    /* English      Canada */
+    "fr_CD",    /* French       Democratic Republic of Congo */
+    "sg_CF",    /* Sango        Central African Republic */
+    "de_CH",    /* German       Switzerland */
+    "es_CL",    /* Spanish      Chile */
+    "zh_CN",    /* Chinese      China */
+    "es_CO",    /* Spanish      Colombia */
+    "es_CR",    /* Spanish      Costa Rica */
+    "es_CU",    /* Spanish      Cuba */
+    /* Curaçao has three official languages: "nl_CW", "pap_CW", "en_CW".  */
+    "el_CY",    /* Greek        Cyprus */
+    "cs_CZ",    /* Czech        Czech Republic */
+    "de_DE",    /* German       Germany */
+    /* Djibouti has two official languages: "ar_DJ" and "fr_DJ".  */
+    "da_DK",    /* Danish       Denmark */
+    "es_DO",    /* Spanish      Dominican Republic */
+    "ar_DZ",    /* Arabic       Algeria */
+    "es_EC",    /* Spanish      Ecuador */
+    "et_EE",    /* Estonian     Estonia */
+    "ar_EG",    /* Arabic       Egypt */
+    "ti_ER",    /* Tigrinya     Eritrea */
+    "es_ES",    /* Spanish      Spain */
+    "am_ET",    /* Amharic      Ethiopia */
+    "fi_FI",    /* Finnish      Finland */
+    /* Fiji has three official languages: "en_FJ", "fj_FJ", "hif_FJ".  */
+    "fo_FO",    /* Faroese      Faeroe Islands */
+    "fr_FR",    /* French       France */
+    "en_GB",    /* English      Britain */
+    "ka_GE",    /* Georgian     Georgia */
+    "en_GH",    /* English      Ghana */
+    "kl_GL",    /* Kalaallisut  Greenland */
+    "fr_GN",    /* French       Guinea */
+    "el_GR",    /* Greek        Greece */
+    "es_GT",    /* Spanish      Guatemala */
+    "zh_HK",    /* Chinese      Hong Kong */
+    "es_HN",    /* Spanish      Honduras */
+    "hr_HR",    /* Croatian     Croatia */
+    "ht_HT",    /* Haitian      Haiti */
+    "hu_HU",    /* Hungarian    Hungary */
+    "id_ID",    /* Indonesian   Indonesia */
+    "en_IE",    /* English      Ireland */
+    "he_IL",    /* Hebrew       Israel */
+    "hi_IN",    /* Hindi        India */
+    "ar_IQ",    /* Arabic       Iraq */
+    "fa_IR",    /* Persian      Iran */
+    "is_IS",    /* Icelandic    Iceland */
+    "it_IT",    /* Italian      Italy */
+    "ar_JO",    /* Arabic       Jordan */
+    "ja_JP",    /* Japanese     Japan */
+    "sw_KE",    /* Swahili      Kenya */
+    "ky_KG",    /* Kyrgyz       Kyrgyzstan */
+    "km_KH",    /* Central Khmer        Cambodia */
+    "ko_KR",    /* Korean       Korea (South) */
+    "ar_KW",    /* Arabic       Kuwait */
+    "kk_KZ",    /* Kazakh       Kazakhstan */
+    "lo_LA",    /* Laotian      Laos */
+    "ar_LB",    /* Arabic       Lebanon */
+    "de_LI",    /* German       Liechtenstein */
+    "si_LK",    /* Sinhala      Sri Lanka */
+    "lt_LT",    /* Lithuanian   Lithuania */
+    /* Luxembourg has three official languages: "lb_LU", "fr_LU", "de_LU".  */
+    "lv_LV",    /* Latvian      Latvia */
+    "ar_LY",    /* Arabic       Libya */
+    "ar_MA",    /* Arabic       Morocco */
+    "sr_ME",    /* Serbian      Montenegro */
+    "mg_MG",    /* Malagasy     Madagascar */
+    "mk_MK",    /* Macedonian   North Macedonia */
+    "fr_ML",    /* French       Mali */
+    "my_MM",    /* Burmese      Myanmar */
+    "mn_MN",    /* Mongolian    Mongolia */
+    "mt_MT",    /* Maltese      Malta */
+    "mfe_MU",   /* Mauritian Creole     Mauritius */
+    "dv_MV",    /* Divehi       Maldives */
+    "ny_MW",    /* Chichewa     Malawi */
+    "es_MX",    /* Spanish      Mexico */
+    "ms_MY",    /* Malay        Malaysia */
+    "en_NG",    /* English      Nigeria */
+    "es_NI",    /* Spanish      Nicaragua */
+    "nl_NL",    /* Dutch        Netherlands */
+    "no_NO",    /* Norwegian    Norway */
+    "ne_NP",    /* Nepali       Nepal */
+    "na_NR",    /* Nauru        Nauru */
+    "niu_NU",   /* Niuean       Niue */
+    "en_NZ",    /* English      New Zealand */
+    "ar_OM",    /* Arabic       Oman */
+    "es_PA",    /* Spanish      Panama */
+    "es_PE",    /* Spanish      Peru */
+    "tpi_PG",   /* Tok Pisin    Papua New Guinea */
+    "fil_PH",   /* Filipino     Philippines */
+    "pa_PK",    /* Punjabi      Pakistan */
+    "pl_PL",    /* Polish       Poland */
+    "es_PR",    /* Spanish      Puerto Rico */
+    "pt_PT",    /* Portuguese   Portugal */
+    "es_PY",    /* Spanish      Paraguay */
+    "ar_QA",    /* Arabic       Qatar */
+    "ro_RO",    /* Romanian     Romania */
+    "sr_RS",    /* Serbian      Serbia */
+    "ru_RU",    /* Russian      Russia */
+    "rw_RW",    /* Kinyarwanda  Rwanda */
+    "ar_SA",    /* Arabic       Saudi Arabia */
+    "en_SC",    /* English      Seychelles */
+    "ar_SD",    /* Arabic       Sudan */
+    "sv_SE",    /* Swedish      Sweden */
+    "en_SG",    /* English      Singapore */
+    "sl_SI",    /* Slovenian    Slovenia */
+    "sk_SK",    /* Slovak       Slovakia */
+    "en_SL",    /* English      Sierra Leone */
+    "fr_SN",    /* French       Senegal */
+    "so_SO",    /* Somali       Somalia */
+    "ar_SS",    /* Arabic       South Sudan */
+    "es_SV",    /* Spanish      El Salvador */
+    "ar_SY",    /* Arabic       Syria */
+    "th_TH",    /* Thai         Thailand */
+    "tg_TJ",    /* Tajik        Tajikistan */
+    "tk_TM",    /* Turkmen      Turkmenistan */
+    "ar_TN",    /* Arabic       Tunisia */
+    "to_TO",    /* Tonga        Tonga */
+    "tr_TR",    /* Turkish      Turkey */
+    "zh_TW",    /* Chinese      Taiwan */
+    "sw_TZ",    /* Swahili      Tanzania */
+    "uk_UA",    /* Ukrainian    Ukraine */
+    "lg_UG",    /* Ganda        Uganda */
+    "en_US",    /* English      United States of America */
+    "es_UY",    /* Spanish      Uruguay */
+    "uz_UZ",    /* Uzbek        Uzbekistan */
+    "es_VE",    /* Spanish      Venezuela */
+    "vi_VN",    /* Vietnamese   Vietnam */
+    "bi_VU",    /* Bislama      Vanuatu */
+    "sm_WS",    /* Samoan       Samoa */
+    "ar_YE",    /* Arabic       Yemen */
+    "en_ZA",    /* English      South Africa */
+    "en_ZM",    /* English      Zambia */
+    "en_ZW"     /* English      Zimbabwe */
+  };
+
+/* Compare just the territory part of two locale names.  */
+static int
+terrcmp (const char *locale1, const char *locale2)
+{
+  const char *territory1 = strrchr (locale1, '_') + 1;
+  const char *territory2 = strrchr (locale2, '_') + 1;
+
+  return strcmp (territory1, territory2);
+}
+
+/* Given a locale name, return the locale corresponding to the main language
+   with the same territory, or NULL if not found.
+   For example: "fr_DE" -> "de_DE".  */
+static const char *
+get_main_locale_with_same_territory (const char *locale)
+{
+  if (strrchr (locale, '_') != NULL)
+    {
+#   define table locales_with_principal_language
+      /* The table is sorted.  Perform a binary search.  */
+      size_t hi = sizeof (table) / sizeof (table[0]);
+      size_t lo = 0;
+      while (lo < hi)
+        {
+          /* Invariant:
+             for i < lo, terrcmp (table[i], locale) < 0,
+             for i >= hi, terrcmp (table[i], locale) > 0.  */
+          size_t mid = (hi + lo) >> 1; /* >= lo, < hi */
+          int cmp = terrcmp (table[mid], locale);
+          if (cmp < 0)
+            lo = mid + 1;
+          else if (cmp > 0)
+            hi = mid;
+          else
+            {
+              /* Found an i with
+                   terrcmp (language_table[i], locale) == 0.
+                 Verify that it is the only such i.  */
+              if (mid > lo && terrcmp (table[mid - 1], locale) >= 0)
+                abort ();
+              if (mid + 1 < hi && terrcmp (table[mid + 1], locale) <= 0)
+                abort ();
+              return table[mid];
+            }
+        }
+#   undef table
+    }
+  return NULL;
+}
+
+#  endif
+
+char *
+setlocale_improved (int category, const char *locale)
+{
+  if (locale != NULL && locale[0] == '\0')
+    {
+      /* A request to the set the current locale to the default locale.  */
+      if (category == LC_ALL)
+        {
+          /* Set LC_CTYPE first.  Then the other categories.  */
+          static int const categories[] =
+            {
+              LC_CTYPE,
+              LC_NUMERIC,
+              LC_TIME,
+              LC_COLLATE,
+              LC_MONETARY,
+              LC_MESSAGES
+            };
+          char *saved_locale;
+          const char *base_name;
+          unsigned int i;
+
+          /* Back up the old locale, in case one of the steps fails.  */
+          saved_locale = setlocale (LC_ALL, NULL);
+          if (saved_locale == NULL)
+            return NULL;
+          saved_locale = strdup (saved_locale);
+          if (saved_locale == NULL)
+            return NULL;
+
+          /* Set LC_CTYPE category.  Set all other categories (except possibly
+             LC_MESSAGES) to the same value in the same call; this is likely to
+             save calls.  */
+          base_name =
+            gl_locale_name_environ (LC_CTYPE, category_to_name (LC_CTYPE));
+          if (base_name == NULL)
+            base_name = gl_locale_name_default ();
+
+          if (setlocale_unixlike (LC_ALL, base_name) != NULL)
+            {
+              /* LC_CTYPE category already set.  */
+              i = 1;
+            }
+          else
+            {
+              /* On Mac OS X, "UTF-8" is a valid locale name for LC_CTYPE but
+                 not for LC_ALL.  Therefore this call may fail.  So, try
+                 another base_name.  */
+              base_name = "C";
+              if (setlocale_unixlike (LC_ALL, base_name) == NULL)
+                goto fail;
+              i = 0;
+            }
+#  if defined _WIN32 && ! defined __CYGWIN__
+          /* On native Windows, setlocale(LC_ALL,...) may succeed but set the
+             LC_CTYPE category to an invalid value ("C") when it does not
+             support the specified encoding.  Report a failure instead.  */
+          if (strchr (base_name, '.') != NULL
+              && strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+            goto fail;
+#  endif
+
+          for (; i < sizeof (categories) / sizeof (categories[0]); i++)
+            {
+              int cat = categories[i];
+              const char *name;
+
+              name = gl_locale_name_environ (cat, category_to_name (cat));
+              if (name == NULL)
+                name = gl_locale_name_default ();
+
+              /* If name is the same as base_name, it has already been set
+                 through the setlocale call before the loop.  */
+              if (strcmp (name, base_name) != 0
+#  if LC_MESSAGES == 1729
+                  || cat == LC_MESSAGES
+#  endif
+                 )
+                if (setlocale_single (cat, name) == NULL)
+#  if defined __APPLE__ && defined __MACH__
+                  {
+                    /* On Mac OS X 10.13, some locales can be set through
+                       System Preferences > Language & Region, that are not
+                       supported by libc.  The system's setlocale() falls
+                       back to "C" for these locale categories.  We can do
+                       better, by trying an existing locale with the same
+                       language or an existing locale with the same territory.
+                       If we can't, print a warning, to limit user
+                       expectations.  */
+                    int warn = 0;
+
+                    if (cat == LC_CTYPE)
+                      warn = (setlocale_single (cat, "UTF-8") == NULL);
+                    else if (cat == LC_MESSAGES)
+                      {
+#   if HAVE_CFLOCALECOPYPREFERREDLANGUAGES || HAVE_CFPREFERENCESCOPYAPPVALUE /* MacOS X 10.4 or newer */
+                        /* Take the primary language preference.  */
+#    if HAVE_CFLOCALECOPYPREFERREDLANGUAGES /* MacOS X 10.5 or newer */
+                        CFArrayRef prefArray = CFLocaleCopyPreferredLanguages ();
+#    elif HAVE_CFPREFERENCESCOPYAPPVALUE /* MacOS X 10.4 or newer */
+                        CFTypeRef preferences =
+                          CFPreferencesCopyAppValue (CFSTR ("AppleLanguages"),
+                                                     kCFPreferencesCurrentApplication);
+                        if (preferences != NULL
+                            && CFGetTypeID (preferences) == CFArrayGetTypeID ())
+                          {
+                            CFArrayRef prefArray = (CFArrayRef)preferences;
+#    endif
+                            int n = CFArrayGetCount (prefArray);
+                            if (n > 0)
+                              {
+                                char buf[256];
+                                CFTypeRef element = CFArrayGetValueAtIndex (prefArray, 0);
+                                if (element != NULL
+                                    && CFGetTypeID (element) == CFStringGetTypeID ()
+                                    && CFStringGetCString ((CFStringRef)element,
+                                                           buf, sizeof (buf),
+                                                           kCFStringEncodingASCII))
+                                  {
+                                    /* Remove the country.
+                                       E.g. "zh-Hans-DE" -> "zh-Hans".  */
+                                    char *last_minus = strrchr (buf, '-');
+                                    if (last_minus != NULL)
+                                      *last_minus = '\0';
+
+                                    /* Convert to Unix locale name.
+                                       E.g. "zh-Hans" -> "zh_CN".  */
+                                    gl_locale_name_canonicalize (buf);
+
+                                    /* Try setlocale with this value.  */
+                                    if (setlocale_single (cat, buf) == NULL)
+                                      {
+                                        const char *last_try =
+                                          get_main_locale_with_same_language (buf);
+
+                                        if (last_try == NULL
+                                            || setlocale_single (cat, last_try) == NULL)
+                                          warn = 1;
+                                      }
+                                  }
+                              }
+#    if HAVE_CFLOCALECOPYPREFERREDLANGUAGES /* MacOS X 10.5 or newer */
+                        CFRelease (prefArray);
+#    elif HAVE_CFPREFERENCESCOPYAPPVALUE /* MacOS X 10.4 or newer */
+                          }
+#    endif
+#   else
+                        const char *last_try =
+                          get_main_locale_with_same_language (name);
+
+                        if (last_try == NULL
+                            || setlocale_single (cat, last_try) == NULL)
+                          warn = 1;
+#   endif
+                      }
+                    else
+                      {
+                        /* For LC_NUMERIC, the application should use the locale
+                           properties kCFLocaleDecimalSeparator,
+                           kCFLocaleGroupingSeparator.
+                           For LC_TIME, the application should use the locale
+                           property kCFLocaleCalendarIdentifier.
+                           For LC_COLLATE, the application should use the locale
+                           properties kCFLocaleCollationIdentifier,
+                           kCFLocaleCollatorIdentifier.
+                           For LC_MONETARY, the applicationshould use the locale
+                           properties kCFLocaleCurrencySymbol,
+                           kCFLocaleCurrencyCode.
+                           But since most applications don't have macOS specific
+                           code like this, try an existing locale with the same
+                           territory.  */
+                        const char *last_try =
+                          get_main_locale_with_same_territory (name);
+
+                        if (last_try == NULL
+                            || setlocale_single (cat, last_try) == NULL)
+                          warn = 1;
+                      }
+
+                    if (warn)
+                      {
+                        /* Warn only if the environment variable
+                           SETLOCALE_VERBOSE is set.  Otherwise these warnings
+                           are just annoyances, since normal users won't invoke
+                           'localedef'.  */
+                        const char *verbose = getenv ("SETLOCALE_VERBOSE");
+                        if (verbose != NULL && verbose[0] != '\0')
+                          fprintf (stderr,
+                                   "Warning: Failed to set locale category %s to %s.\n",
+                                   category_to_name (cat), name);
+                      }
+                  }
+#  else
+                  goto fail;
+#  endif
+            }
+
+          /* All steps were successful.  */
+          free (saved_locale);
+          return setlocale (LC_ALL, NULL);
+
+        fail:
+          if (saved_locale[0] != '\0') /* don't risk an endless recursion */
+            setlocale (LC_ALL, saved_locale);
+          free (saved_locale);
+          return NULL;
+        }
+      else
+        {
+          const char *name =
+            gl_locale_name_environ (category, category_to_name (category));
+          if (name == NULL)
+            name = gl_locale_name_default ();
+
+          return setlocale_single (category, name);
+        }
+    }
+  else
+    {
+#  if defined _WIN32 && ! defined __CYGWIN__
+      if (category == LC_ALL && locale != NULL && strchr (locale, '.') != NULL)
+        {
+          char *saved_locale;
+
+          /* Back up the old locale.  */
+          saved_locale = setlocale (LC_ALL, NULL);
+          if (saved_locale == NULL)
+            return NULL;
+          saved_locale = strdup (saved_locale);
+          if (saved_locale == NULL)
+            return NULL;
+
+          if (setlocale_unixlike (LC_ALL, locale) == NULL)
+            {
+              free (saved_locale);
+              return NULL;
+            }
+
+          /* On native Windows, setlocale(LC_ALL,...) may succeed but set the
+             LC_CTYPE category to an invalid value ("C") when it does not
+             support the specified encoding.  Report a failure instead.  */
+          if (strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+            {
+              if (saved_locale[0] != '\0') /* don't risk an endless recursion */
+                setlocale (LC_ALL, saved_locale);
+              free (saved_locale);
+              return NULL;
+            }
+
+          /* It was really successful.  */
+          free (saved_locale);
+          return setlocale (LC_ALL, NULL);
+        }
+      else
+#  endif
+        return setlocale_single (category, locale);
+    }
+}
+
+# endif /* NEED_SETLOCALE_IMPROVED */
+
+#endif
diff --git a/gnulib-tests/setsockopt.c b/gnulib-tests/setsockopt.c
new file mode 100644
index 0000000..ce0f9dd
--- /dev/null
+++ b/gnulib-tests/setsockopt.c
@@ -0,0 +1,65 @@
+/* setsockopt.c --- wrappers for Windows setsockopt function
+
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get struct timeval. */
+#include <sys/time.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef setsockopt
+
+int
+rpl_setsockopt (int fd, int level, int optname, const void *optval, socklen_t optlen)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+  int r;
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      if (level == SOL_SOCKET
+          && (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
+        {
+          const struct timeval *tv = optval;
+          int milliseconds = tv->tv_sec * 1000 + tv->tv_usec / 1000;
+          optval = &milliseconds;
+          r = setsockopt (sock, level, optname, optval, sizeof (int));
+        }
+      else
+        {
+          r = setsockopt (sock, level, optname, optval, optlen);
+        }
+
+      if (r < 0)
+        set_winsock_errno ();
+
+      return r;
+    }
+}
diff --git a/gnulib-tests/signature.h b/gnulib-tests/signature.h
new file mode 100644
index 0000000..c586fec
--- /dev/null
+++ b/gnulib-tests/signature.h
@@ -0,0 +1,48 @@
+/* Macro for checking that a function declaration is compliant.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef SIGNATURE_CHECK
+
+/* Check that the function FN takes the specified arguments ARGS with
+   a return type of RET.  This header is designed to be included after
+   <config.h> and the one system header that is supposed to contain
+   the function being checked, but prior to any other system headers
+   that are necessary for the unit test.  Therefore, this file does
+   not include any system headers, nor reference anything outside of
+   the macro arguments.  For an example, if foo.h should provide:
+
+   extern int foo (char, float);
+
+   then the unit test named test-foo.c would start out with:
+
+   #include <config.h>
+   #include <foo.h>
+   #include "signature.h"
+   SIGNATURE_CHECK (foo, int, (char, float));
+   #include <other.h>
+   ...
+*/
+# define SIGNATURE_CHECK(fn, ret, args) \
+  SIGNATURE_CHECK1 (fn, ret, args, __LINE__)
+
+/* Necessary to allow multiple SIGNATURE_CHECK lines in a unit test.
+   Note that the checks must not occupy the same line.  */
+# define SIGNATURE_CHECK1(fn, ret, args, id) \
+  SIGNATURE_CHECK2 (fn, ret, args, id) /* macroexpand line */
+# define SIGNATURE_CHECK2(fn, ret, args, id) \
+  static ret (* _GL_UNUSED signature_check ## id) args = fn
+
+#endif /* SIGNATURE_CHECK */
diff --git a/gnulib-tests/sleep.c b/gnulib-tests/sleep.c
new file mode 100644
index 0000000..8aca605
--- /dev/null
+++ b/gnulib-tests/sleep.c
@@ -0,0 +1,76 @@
+/* Pausing execution of the current thread.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2007.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#include <limits.h>
+
+#include "verify.h"
+
+#if defined _WIN32 && ! defined __CYGWIN__
+
+# define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+# include <windows.h>
+
+unsigned int
+sleep (unsigned int seconds)
+{
+  unsigned int remaining;
+
+  /* Sleep for 1 second many times, because
+       1. Sleep is not interruptible by Ctrl-C,
+       2. we want to avoid arithmetic overflow while multiplying with 1000.  */
+  for (remaining = seconds; remaining > 0; remaining--)
+    Sleep (1000);
+
+  return remaining;
+}
+
+#elif HAVE_SLEEP
+
+# undef sleep
+
+/* Guarantee unlimited sleep and a reasonable return value.  Cygwin
+   1.5.x rejects attempts to sleep more than 49.7 days (2**32
+   milliseconds), but uses uninitialized memory which results in a
+   garbage answer.  Similarly, Linux 2.6.9 with glibc 2.3.4 has a too
+   small return value when asked to sleep more than 24.85 days.  */
+unsigned int
+rpl_sleep (unsigned int seconds)
+{
+  /* This requires int larger than 16 bits.  */
+  verify (UINT_MAX / 24 / 24 / 60 / 60);
+  const unsigned int limit = 24 * 24 * 60 * 60;
+  while (limit < seconds)
+    {
+      unsigned int result;
+      seconds -= limit;
+      result = sleep (limit);
+      if (result)
+        return seconds + result;
+    }
+  return sleep (seconds);
+}
+
+#else /* !HAVE_SLEEP */
+
+ #error "Please port gnulib sleep.c to your platform, possibly using usleep() or select(), then report this to bug-gnulib."
+
+#endif
diff --git a/gnulib-tests/socket.c b/gnulib-tests/socket.c
new file mode 100644
index 0000000..67c6b1e
--- /dev/null
+++ b/gnulib-tests/socket.c
@@ -0,0 +1,49 @@
+/* socket.c --- wrappers for Windows socket function
+
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#include "sockets.h"
+
+int
+rpl_socket (int domain, int type, int protocol)
+{
+  SOCKET fh;
+
+  gl_sockets_startup (SOCKETS_1_1);
+
+  /* We have to use WSASocket() to create non-overlapped IO sockets.
+     Overlapped IO sockets cannot be used with read/write.  */
+  fh = WSASocket (domain, type, protocol, NULL, 0, 0);
+
+  if (fh == INVALID_SOCKET)
+    {
+      set_winsock_errno ();
+      return -1;
+    }
+  else
+    return SOCKET_TO_FD (fh);
+}
diff --git a/gnulib-tests/strerror_r.c b/gnulib-tests/strerror_r.c
new file mode 100644
index 0000000..9ccc6c3
--- /dev/null
+++ b/gnulib-tests/strerror_r.c
@@ -0,0 +1,451 @@
+/* strerror_r.c --- POSIX compatible system error routine
+
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
+
+#include <config.h>
+
+/* Enable declaration of sys_nerr and sys_errlist in <errno.h> on NetBSD.  */
+#define _NETBSD_SOURCE 1
+
+/* Specification.  */
+#include <string.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#if !HAVE_SNPRINTF
+# include <stdarg.h>
+#endif
+
+#include "strerror-override.h"
+
+#if (__GLIBC__ >= 2 || defined __UCLIBC__ || defined __CYGWIN__) && HAVE___XPG_STRERROR_R /* glibc >= 2.3.4, cygwin >= 1.7.9 */
+
+# define USE_XPG_STRERROR_R 1
+extern
+#ifdef __cplusplus
+"C"
+#endif
+int __xpg_strerror_r (int errnum, char *buf, size_t buflen);
+
+#elif HAVE_DECL_STRERROR_R && !(__GLIBC__ >= 2 || defined __UCLIBC__ || defined __CYGWIN__)
+
+/* The system's strerror_r function is OK, except that its third argument
+   is 'int', not 'size_t', or its return type is wrong.  */
+
+# include <limits.h>
+
+# define USE_SYSTEM_STRERROR_R 1
+
+#else /* (__GLIBC__ >= 2 || defined __UCLIBC__ || defined __CYGWIN__ ? !HAVE___XPG_STRERROR_R : !HAVE_DECL_STRERROR_R) */
+
+/* Use the system's strerror().  Exclude glibc and cygwin because the
+   system strerror_r has the wrong return type, and cygwin 1.7.9
+   strerror_r clobbers strerror.  */
+# undef strerror
+
+# define USE_SYSTEM_STRERROR 1
+
+# if defined __NetBSD__ || defined __hpux || (defined _WIN32 && !defined __CYGWIN__) || defined __sgi || (defined __sun && !defined _LP64) || defined __CYGWIN__
+
+/* No locking needed.  */
+
+/* Get catgets internationalization functions.  */
+#  if HAVE_CATGETS
+#   include <nl_types.h>
+#  endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Get sys_nerr, sys_errlist on HP-UX (otherwise only declared in C++ mode).
+   Get sys_nerr, sys_errlist on IRIX (otherwise only declared with _SGIAPI).  */
+#  if defined __hpux || defined __sgi
+extern int sys_nerr;
+extern char *sys_errlist[];
+#  endif
+
+/* Get sys_nerr on Solaris.  */
+#  if defined __sun && !defined _LP64
+extern int sys_nerr;
+#  endif
+
+#ifdef __cplusplus
+}
+#endif
+
+# else
+
+#  include "glthread/lock.h"
+
+/* This lock protects the buffer returned by strerror().  We assume that
+   no other uses of strerror() exist in the program.  */
+gl_lock_define_initialized(static, strerror_lock)
+
+# endif
+
+#endif
+
+/* On MSVC, there is no snprintf() function, just a _snprintf().
+   It is of lower quality, but sufficient for the simple use here.
+   We only have to make sure to NUL terminate the result (_snprintf
+   does not NUL terminate, like strncpy).  */
+#if !HAVE_SNPRINTF
+static int
+local_snprintf (char *buf, size_t buflen, const char *format, ...)
+{
+  va_list args;
+  int result;
+
+  va_start (args, format);
+  result = _vsnprintf (buf, buflen, format, args);
+  va_end (args);
+  if (buflen > 0 && (result < 0 || result >= buflen))
+    buf[buflen - 1] = '\0';
+  return result;
+}
+# define snprintf local_snprintf
+#endif
+
+/* Copy as much of MSG into BUF as possible, without corrupting errno.
+   Return 0 if MSG fit in BUFLEN, otherwise return ERANGE.  */
+static int
+safe_copy (char *buf, size_t buflen, const char *msg)
+{
+  size_t len = strlen (msg);
+  size_t moved = len < buflen ? len : buflen - 1;
+
+  /* Although POSIX lets memmove corrupt errno, we don't
+     know of any implementation where this is a real problem.  */
+  memmove (buf, msg, moved);
+  buf[moved] = '\0';
+  return len < buflen ? 0 : ERANGE;
+}
+
+
+int
+strerror_r (int errnum, char *buf, size_t buflen)
+#undef strerror_r
+{
+  /* Filter this out now, so that rest of this replacement knows that
+     there is room for a non-empty message and trailing NUL.  */
+  if (buflen <= 1)
+    {
+      if (buflen)
+        *buf = '\0';
+      return ERANGE;
+    }
+  *buf = '\0';
+
+  /* Check for gnulib overrides.  */
+  {
+    char const *msg = strerror_override (errnum);
+
+    if (msg)
+      return safe_copy (buf, buflen, msg);
+  }
+
+  {
+    int ret;
+    int saved_errno = errno;
+
+#if USE_XPG_STRERROR_R
+
+    {
+      ret = __xpg_strerror_r (errnum, buf, buflen);
+      if (ret < 0)
+        ret = errno;
+      if (!*buf)
+        {
+          /* glibc 2.13 would not touch buf on err, so we have to fall
+             back to GNU strerror_r which always returns a thread-safe
+             untruncated string to (partially) copy into our buf.  */
+          safe_copy (buf, buflen, strerror_r (errnum, buf, buflen));
+        }
+    }
+
+#elif USE_SYSTEM_STRERROR_R
+
+    if (buflen > INT_MAX)
+      buflen = INT_MAX;
+
+# ifdef __hpux
+    /* On HP-UX 11.31, strerror_r always fails when buflen < 80; it
+       also fails to change buf on EINVAL.  */
+    {
+      char stackbuf[80];
+
+      if (buflen < sizeof stackbuf)
+        {
+          ret = strerror_r (errnum, stackbuf, sizeof stackbuf);
+          if (ret == 0)
+            ret = safe_copy (buf, buflen, stackbuf);
+        }
+      else
+        ret = strerror_r (errnum, buf, buflen);
+    }
+# else
+    ret = strerror_r (errnum, buf, buflen);
+
+    /* Some old implementations may return (-1, EINVAL) instead of EINVAL.
+       But on Haiku, valid error numbers are negative.  */
+#  if !defined __HAIKU__
+    if (ret < 0)
+      ret = errno;
+#  endif
+# endif
+
+# if defined _AIX || defined __HAIKU__
+    /* AIX and Haiku return 0 rather than ERANGE when truncating strings; try
+       again until we are sure we got the entire string.  */
+    if (!ret && strlen (buf) == buflen - 1)
+      {
+        char stackbuf[STACKBUF_LEN];
+        size_t len;
+        strerror_r (errnum, stackbuf, sizeof stackbuf);
+        len = strlen (stackbuf);
+        /* STACKBUF_LEN should have been large enough.  */
+        if (len + 1 == sizeof stackbuf)
+          abort ();
+        if (buflen <= len)
+          ret = ERANGE;
+      }
+# else
+    /* Solaris 10 does not populate buf on ERANGE.  OpenBSD 4.7
+       truncates early on ERANGE rather than return a partial integer.
+       We prefer the maximal string.  We set buf[0] earlier, and we
+       know of no implementation that modifies buf to be an
+       unterminated string, so this strlen should be portable in
+       practice (rather than pulling in a safer strnlen).  */
+    if (ret == ERANGE && strlen (buf) < buflen - 1)
+      {
+        char stackbuf[STACKBUF_LEN];
+
+        /* STACKBUF_LEN should have been large enough.  */
+        if (strerror_r (errnum, stackbuf, sizeof stackbuf) == ERANGE)
+          abort ();
+        safe_copy (buf, buflen, stackbuf);
+      }
+# endif
+
+#else /* USE_SYSTEM_STRERROR */
+
+    /* Try to do what strerror (errnum) does, but without clobbering the
+       buffer used by strerror().  */
+
+# if defined __NetBSD__ || defined __hpux || (defined _WIN32 && !defined __CYGWIN__) || defined __CYGWIN__ /* NetBSD, HP-UX, native Windows, Cygwin */
+
+    /* NetBSD:         sys_nerr, sys_errlist are declared through _NETBSD_SOURCE
+                       and <errno.h> above.
+       HP-UX:          sys_nerr, sys_errlist are declared explicitly above.
+       native Windows: sys_nerr, sys_errlist are declared in <stdlib.h>.
+       Cygwin:         sys_nerr, sys_errlist are declared in <errno.h>.  */
+    if (errnum >= 0 && errnum < sys_nerr)
+      {
+#  if HAVE_CATGETS && (defined __NetBSD__ || defined __hpux)
+#   if defined __NetBSD__
+        nl_catd catd = catopen ("libc", NL_CAT_LOCALE);
+        const char *errmsg =
+          (catd != (nl_catd)-1
+           ? catgets (catd, 1, errnum, sys_errlist[errnum])
+           : sys_errlist[errnum]);
+#   endif
+#   if defined __hpux
+        nl_catd catd = catopen ("perror", NL_CAT_LOCALE);
+        const char *errmsg =
+          (catd != (nl_catd)-1
+           ? catgets (catd, 1, 1 + errnum, sys_errlist[errnum])
+           : sys_errlist[errnum]);
+#   endif
+#  else
+        const char *errmsg = sys_errlist[errnum];
+#  endif
+        if (errmsg == NULL || *errmsg == '\0')
+          ret = EINVAL;
+        else
+          ret = safe_copy (buf, buflen, errmsg);
+#  if HAVE_CATGETS && (defined __NetBSD__ || defined __hpux)
+        if (catd != (nl_catd)-1)
+          catclose (catd);
+#  endif
+      }
+    else
+      ret = EINVAL;
+
+# elif defined __sgi || (defined __sun && !defined _LP64) /* IRIX, Solaris <= 9 32-bit */
+
+    /* For a valid error number, the system's strerror() function returns
+       a pointer to a not copied string, not to a buffer.  */
+    if (errnum >= 0 && errnum < sys_nerr)
+      {
+        char *errmsg = strerror (errnum);
+
+        if (errmsg == NULL || *errmsg == '\0')
+          ret = EINVAL;
+        else
+          ret = safe_copy (buf, buflen, errmsg);
+      }
+    else
+      ret = EINVAL;
+
+# else
+
+    gl_lock_lock (strerror_lock);
+
+    {
+      char *errmsg = strerror (errnum);
+
+      /* For invalid error numbers, strerror() on
+           - IRIX 6.5 returns NULL,
+           - HP-UX 11 returns an empty string.  */
+      if (errmsg == NULL || *errmsg == '\0')
+        ret = EINVAL;
+      else
+        ret = safe_copy (buf, buflen, errmsg);
+    }
+
+    gl_lock_unlock (strerror_lock);
+
+# endif
+
+#endif
+
+#if defined _WIN32 && !defined __CYGWIN__
+    /* MSVC 14 defines names for many error codes in the range 100..140,
+       but _sys_errlist contains strings only for the error codes
+       < _sys_nerr = 43.  */
+    if (ret == EINVAL)
+      {
+        const char *errmsg;
+
+        switch (errnum)
+          {
+          case 100 /* EADDRINUSE */:
+            errmsg = "Address already in use";
+            break;
+          case 101 /* EADDRNOTAVAIL */:
+            errmsg = "Cannot assign requested address";
+            break;
+          case 102 /* EAFNOSUPPORT */:
+            errmsg = "Address family not supported by protocol";
+            break;
+          case 103 /* EALREADY */:
+            errmsg = "Operation already in progress";
+            break;
+          case 105 /* ECANCELED */:
+            errmsg = "Operation canceled";
+            break;
+          case 106 /* ECONNABORTED */:
+            errmsg = "Software caused connection abort";
+            break;
+          case 107 /* ECONNREFUSED */:
+            errmsg = "Connection refused";
+            break;
+          case 108 /* ECONNRESET */:
+            errmsg = "Connection reset by peer";
+            break;
+          case 109 /* EDESTADDRREQ */:
+            errmsg = "Destination address required";
+            break;
+          case 110 /* EHOSTUNREACH */:
+            errmsg = "No route to host";
+            break;
+          case 112 /* EINPROGRESS */:
+            errmsg = "Operation now in progress";
+            break;
+          case 113 /* EISCONN */:
+            errmsg = "Transport endpoint is already connected";
+            break;
+          case 114 /* ELOOP */:
+            errmsg = "Too many levels of symbolic links";
+            break;
+          case 115 /* EMSGSIZE */:
+            errmsg = "Message too long";
+            break;
+          case 116 /* ENETDOWN */:
+            errmsg = "Network is down";
+            break;
+          case 117 /* ENETRESET */:
+            errmsg = "Network dropped connection on reset";
+            break;
+          case 118 /* ENETUNREACH */:
+            errmsg = "Network is unreachable";
+            break;
+          case 119 /* ENOBUFS */:
+            errmsg = "No buffer space available";
+            break;
+          case 123 /* ENOPROTOOPT */:
+            errmsg = "Protocol not available";
+            break;
+          case 126 /* ENOTCONN */:
+            errmsg = "Transport endpoint is not connected";
+            break;
+          case 128 /* ENOTSOCK */:
+            errmsg = "Socket operation on non-socket";
+            break;
+          case 129 /* ENOTSUP */:
+            errmsg = "Not supported";
+            break;
+          case 130 /* EOPNOTSUPP */:
+            errmsg = "Operation not supported";
+            break;
+          case 132 /* EOVERFLOW */:
+            errmsg = "Value too large for defined data type";
+            break;
+          case 133 /* EOWNERDEAD */:
+            errmsg = "Owner died";
+            break;
+          case 134 /* EPROTO */:
+            errmsg = "Protocol error";
+            break;
+          case 135 /* EPROTONOSUPPORT */:
+            errmsg = "Protocol not supported";
+            break;
+          case 136 /* EPROTOTYPE */:
+            errmsg = "Protocol wrong type for socket";
+            break;
+          case 138 /* ETIMEDOUT */:
+            errmsg = "Connection timed out";
+            break;
+          case 140 /* EWOULDBLOCK */:
+            errmsg = "Operation would block";
+            break;
+          default:
+            errmsg = NULL;
+            break;
+          }
+        if (errmsg != NULL)
+          ret = safe_copy (buf, buflen, errmsg);
+      }
+#endif
+
+    if (ret == EINVAL && !*buf)
+      {
+#if defined __HAIKU__
+        /* For consistency with perror().  */
+        snprintf (buf, buflen, "Unknown Application Error (%d)", errnum);
+#else
+        snprintf (buf, buflen, "Unknown error %d", errnum);
+#endif
+      }
+
+    errno = saved_errno;
+    return ret;
+  }
+}
diff --git a/gnulib-tests/test-accept.c b/gnulib-tests/test-accept.c
new file mode 100644
index 0000000..cdf8cb2
--- /dev/null
+++ b/gnulib-tests/test-accept.c
@@ -0,0 +1,56 @@
+/* Test accepting a connection to a server socket.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/socket.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (accept, int, (int, struct sockaddr *, socklen_t *));
+
+#include <errno.h>
+#include <netinet/in.h>
+#include <unistd.h>
+
+#include "sockets.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  (void) gl_sockets_startup (SOCKETS_1_1);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    struct sockaddr_in addr;
+    socklen_t addrlen = sizeof (addr);
+
+    errno = 0;
+    ASSERT (accept (-1, (struct sockaddr *) &addr, &addrlen) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    struct sockaddr_in addr;
+    socklen_t addrlen = sizeof (addr);
+
+    close (99);
+    errno = 0;
+    ASSERT (accept (99, (struct sockaddr *) &addr, &addrlen) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-alignof.c b/gnulib-tests/test-alignof.c
new file mode 100644
index 0000000..34eaec2
--- /dev/null
+++ b/gnulib-tests/test-alignof.c
@@ -0,0 +1,59 @@
+/* Test of <alignof.h>.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+#include <alignof.h>
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "verify.h"
+
+typedef long double longdouble;
+typedef struct { char a[1]; } struct1;
+typedef struct { char a[2]; } struct2;
+typedef struct { char a[3]; } struct3;
+typedef struct { char a[4]; } struct4;
+
+#define CHECK(type) \
+  typedef struct { char slot1; type slot2; } type##_helper; \
+  verify (alignof_slot (type) == offsetof (type##_helper, slot2)); \
+  const int type##_slot_alignment = alignof_slot (type); \
+  const int type##_type_alignment = alignof_type (type);
+
+CHECK (char)
+CHECK (short)
+CHECK (int)
+CHECK (long)
+CHECK (float)
+CHECK (double)
+CHECK (longdouble)
+#ifdef INT64_MAX
+CHECK (int64_t)
+#endif
+CHECK (struct1)
+CHECK (struct2)
+CHECK (struct3)
+CHECK (struct4)
+
+int
+main ()
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-alloca-opt.c b/gnulib-tests/test-alloca-opt.c
new file mode 100644
index 0000000..faf7c74
--- /dev/null
+++ b/gnulib-tests/test-alloca-opt.c
@@ -0,0 +1,62 @@
+/* Test of optional automatic memory allocation.
+   Copyright (C) 2005, 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <alloca.h>
+
+#if HAVE_ALLOCA
+
+static void
+do_allocation (int n)
+{
+  void *ptr = alloca (n);
+  (void) ptr;
+}
+
+void (*func) (int) = do_allocation;
+
+#endif
+
+int
+main ()
+{
+#if HAVE_ALLOCA
+  int i;
+
+  /* Repeat a lot of times, to make sure there's no memory leak.  */
+  for (i = 0; i < 100000; i++)
+    {
+      /* Try various values.
+         n = 0 gave a crash on Alpha with gcc-2.5.8.
+         Some versions of Mac OS X have a stack size limit of 512 KB.  */
+      func (34);
+      func (134);
+      func (399);
+      func (510823);
+      func (129321);
+      func (0);
+      func (4070);
+      func (4095);
+      func (1);
+      func (16582);
+    }
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-areadlink-with-size.c b/gnulib-tests/test-areadlink-with-size.c
new file mode 100644
index 0000000..a962612
--- /dev/null
+++ b/gnulib-tests/test-areadlink-with-size.c
@@ -0,0 +1,46 @@
+/* Tests of areadlink_with_size.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include "areadlink.h"
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-areadlink-with-size.t"
+
+#include "test-areadlink.h"
+
+int
+main (void)
+{
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_areadlink (areadlink_with_size, true);
+}
diff --git a/gnulib-tests/test-areadlink.c b/gnulib-tests/test-areadlink.c
new file mode 100644
index 0000000..d8e10ae
--- /dev/null
+++ b/gnulib-tests/test-areadlink.c
@@ -0,0 +1,53 @@
+/* Tests of areadlink.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include "areadlink.h"
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-areadlink.t"
+
+#include "test-areadlink.h"
+
+/* Wrapper for testing areadlink.  */
+static char *
+do_areadlink (char const *name, size_t ignored _GL_UNUSED)
+{
+  return areadlink (name);
+}
+
+int
+main (void)
+{
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_areadlink (do_areadlink, true);
+}
diff --git a/gnulib-tests/test-areadlink.h b/gnulib-tests/test-areadlink.h
new file mode 100644
index 0000000..b1fb372
--- /dev/null
+++ b/gnulib-tests/test-areadlink.h
@@ -0,0 +1,83 @@
+/* Tests of areadlink and friends.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+/* This file is designed to test areadlink(a),
+   areadlink_with_size(a,b), and areadlinkat(AT_FDCWD,a).  FUNC is the
+   function to test; a length is always supplied, but may be ignored.
+   Assumes that BASE and ASSERT are already defined, and that
+   appropriate headers are already included.  If PRINT, warn before
+   skipping symlink tests with status 77.  */
+
+static int
+test_areadlink (char * (*func) (char const *, size_t), bool print)
+{
+  /* Sanity checks of failures.  Mingw lacks symlink, but areadlink can
+     still distinguish between various errors.  */
+  errno = 0;
+  ASSERT (func ("no_such", 1) == NULL);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("no_such/", 1) == NULL);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("", 1) == NULL);
+  ASSERT (errno == ENOENT || errno == EINVAL);
+  errno = 0;
+  ASSERT (func (".", 1) == NULL);
+  ASSERT (errno == EINVAL);
+  errno = 0;
+  ASSERT (func ("./", 1) == NULL);
+  ASSERT (errno == EINVAL);
+  ASSERT (close (creat (BASE "file", 0600)) == 0);
+  errno = 0;
+  ASSERT (func (BASE "file", 1) == NULL);
+  ASSERT (errno == EINVAL);
+  errno = 0;
+  ASSERT (func (BASE "file/", 1) == NULL);
+  ASSERT (errno == ENOTDIR || errno == EINVAL); /* AIX yields EINVAL */
+  ASSERT (unlink (BASE "file") == 0);
+
+  /* Now test actual symlinks.  */
+  if (symlink (BASE "dir", BASE "link"))
+    {
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  errno = 0;
+  ASSERT (func (BASE "link/", 1) == NULL);
+  ASSERT (errno == EINVAL);
+  {
+    /* Too small a guess is okay.  */
+    char *buf = func (BASE "link", 1);
+    ASSERT (buf);
+    ASSERT (strcmp (buf, BASE "dir") == 0);
+    free (buf);
+    /* Too large a guess is okay.  */
+    buf = func (BASE "link", 10000000);
+    ASSERT (buf);
+    ASSERT (strcmp (buf, BASE "dir") == 0);
+    free (buf);
+  }
+  ASSERT (rmdir (BASE "dir") == 0);
+  ASSERT (unlink (BASE "link") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-areadlinkat.c b/gnulib-tests/test-areadlinkat.c
new file mode 100644
index 0000000..00a4de0
--- /dev/null
+++ b/gnulib-tests/test-areadlinkat.c
@@ -0,0 +1,89 @@
+/* Tests of areadlinkat.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include "areadlink.h"
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-areadlinkat.t"
+
+#include "test-areadlink.h"
+
+static int dfd = AT_FDCWD;
+
+/* Wrapper for testing areadlinkat.  */
+static char *
+do_areadlinkat (char const *name, size_t ignored _GL_UNUSED)
+{
+  return areadlinkat (dfd, name);
+}
+
+int
+main (void)
+{
+  int result;
+
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  /* Basic tests.  */
+  result = test_areadlink (do_areadlinkat, false);
+  dfd = open (".", O_RDONLY);
+  ASSERT (0 <= dfd);
+  ASSERT (test_areadlink (do_areadlinkat, false) == result);
+
+  /* Relative tests.  */
+  if (result == 77)
+    fputs ("skipping test: symlinks not supported on this file system\n",
+           stderr);
+  else
+    {
+      char *buf;
+      ASSERT (symlink ("nowhere", BASE "link") == 0);
+      ASSERT (mkdir (BASE "dir", 0700) == 0);
+      ASSERT (chdir (BASE "dir") == 0);
+      buf = areadlinkat (dfd, BASE "link");
+      ASSERT (buf);
+      ASSERT (strcmp (buf, "nowhere") == 0);
+      free (buf);
+      errno = 0;
+      ASSERT (areadlinkat (-1, BASE "link") == NULL);
+      ASSERT (errno == EBADF);
+      errno = 0;
+      ASSERT (areadlinkat (AT_FDCWD, BASE "link") == NULL);
+      ASSERT (errno == ENOENT);
+      ASSERT (chdir ("..") == 0);
+      ASSERT (rmdir (BASE "dir") == 0);
+      ASSERT (unlink (BASE "link") == 0);
+    }
+
+  ASSERT (close (dfd) == 0);
+  return result;
+}
diff --git a/gnulib-tests/test-argmatch.c b/gnulib-tests/test-argmatch.c
new file mode 100644
index 0000000..24a0500
--- /dev/null
+++ b/gnulib-tests/test-argmatch.c
@@ -0,0 +1,156 @@
+/* Test of exact or abbreviated match search.
+   Copyright (C) 1990, 1998-1999, 2001-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007, based on test code
+   by David MacKenzie <djm@gnu.ai.mit.edu>.  */
+
+#include <config.h>
+
+#include "argmatch.h"
+
+#include <stdlib.h>
+
+#include "macros.h"
+
+# define N_(Msgid) (Msgid)
+
+/* Some packages define ARGMATCH_DIE and ARGMATCH_DIE_DECL in <config.h>, and
+   thus must link with a definition of that function.  Provide it here.  */
+#ifdef ARGMATCH_DIE_DECL
+
+_Noreturn ARGMATCH_DIE_DECL;
+ARGMATCH_DIE_DECL { exit (1); }
+
+#endif
+
+enum backup_type
+{
+  no_backups,
+  simple_backups,
+  numbered_existing_backups,
+  numbered_backups
+};
+
+static const char *const backup_args[] =
+{
+  "no", "none", "off",
+  "simple", "never", "single",
+  "existing", "nil", "numbered-existing",
+  "numbered", "t", "newstyle",
+  NULL
+};
+
+static const enum backup_type backup_vals[] =
+{
+  no_backups, no_backups, no_backups,
+  simple_backups, simple_backups, simple_backups,
+  numbered_existing_backups, numbered_existing_backups, numbered_existing_backups,
+  numbered_backups, numbered_backups, numbered_backups
+};
+
+ARGMATCH_DEFINE_GROUP(backup, enum backup_type);
+
+static const argmatch_backup_doc argmatch_backup_docs[] =
+{
+  { "no",       N_("never make backups (even if --backup is given)") },
+  { "numbered", N_("make numbered backups") },
+  { "existing", N_("numbered if numbered backups exist, simple otherwise") },
+  { "simple",   N_("always make simple backups") },
+  { NULL, NULL }
+};
+
+static const argmatch_backup_arg argmatch_backup_args[] =
+{
+  { "no",                no_backups },
+  { "none",              no_backups },
+  { "off",               no_backups },
+  { "simple",            simple_backups },
+  { "never",             simple_backups },
+  { "single",            simple_backups },
+  { "existing",          numbered_existing_backups },
+  { "nil",               numbered_existing_backups },
+  { "numbered-existing", numbered_existing_backups },
+  { "numbered",          numbered_backups },
+  { "t",                 numbered_backups },
+  { "newstyle",          numbered_backups },
+  { NULL, no_backups }
+};
+
+const argmatch_backup_group_type argmatch_backup_group =
+{
+  argmatch_backup_args,
+  argmatch_backup_docs,
+  N_("\
+The backup suffix is '~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.\n\
+The version control method may be selected via the --backup option or through\n\
+the VERSION_CONTROL environment variable.  Here are the values:\n"),
+  NULL
+};
+
+int
+main (int argc, char *argv[])
+{
+#define CHECK(Input, Output)                                            \
+  do {                                                                  \
+    ASSERT (ARGMATCH (Input, backup_args, backup_vals) == Output);      \
+    ASSERT (argmatch_backup_choice (Input) == Output);                  \
+    if (0 <= Output)                                                    \
+      {                                                                 \
+        enum backup_type val = argmatch_backup_args[Output].val;        \
+        ASSERT (*argmatch_backup_value ("test", Input) == val);         \
+        ASSERT (*argmatch_backup_value ("test",                         \
+                                        argmatch_backup_argument (&val)) \
+                == val);                                                \
+      }                                                                 \
+  } while (0)
+
+  /* Not found.  */
+  CHECK ("klingon", -1);
+
+  /* Exact match.  */
+  CHECK ("none", 1);
+  CHECK ("nil", 7);
+
+  /* Too long.  */
+  CHECK ("nilpotent", -1);
+
+  /* Abbreviated.  */
+  CHECK ("simpl", 3);
+  CHECK ("simp", 3);
+  CHECK ("sim", 3);
+
+  /* Exact match and abbreviated.  */
+  CHECK ("numbered", 9);
+  CHECK ("numbere", -2);
+  CHECK ("number", -2);
+  CHECK ("numbe", -2);
+  CHECK ("numb", -2);
+  CHECK ("num", -2);
+  CHECK ("nu", -2);
+  CHECK ("n", -2);
+
+  /* Ambiguous abbreviated.  */
+  CHECK ("ne", -2);
+
+  /* Ambiguous abbreviated, but same value ("single" and "simple").  */
+  CHECK ("si", 3);
+  CHECK ("s", 3);
+#undef CHECK
+
+  argmatch_backup_usage (stdout);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-argv-iter.c b/gnulib-tests/test-argv-iter.c
new file mode 100644
index 0000000..82deb57
--- /dev/null
+++ b/gnulib-tests/test-argv-iter.c
@@ -0,0 +1,107 @@
+/* Test argv iterator
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <config.h>
+
+#include "argv-iter.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "macros.h"
+
+#define ARRAY_CARDINALITY(Array) (sizeof (Array) / sizeof *(Array))
+#define STREQ(a, b) (strcmp (a, b) == 0)
+
+static FILE *
+write_nul_delimited_argv (char **argv)
+{
+  FILE *fp = tmpfile ();
+  ASSERT (fp);
+  while (*argv)
+    {
+      size_t len = strlen (*argv) + 1;
+      ASSERT (fwrite (*argv, len, 1, fp) == 1);
+      argv++;
+    }
+  ASSERT (fflush (fp) == 0);
+  rewind (fp);
+  return fp;
+}
+
+int
+main (void)
+{
+  static char one[] = "1";
+  static char two[] = "2";
+  static char three[] = "3";
+  static char *av[][4] = {
+    {NULL},
+    {one, NULL},
+    {one, two, NULL},
+    {one, two, three, NULL}
+  };
+
+  int use_stream;
+  for (use_stream = 0; use_stream < 2; use_stream++)
+    {
+      size_t i;
+      for (i = 0; i < ARRAY_CARDINALITY (av); i++)
+        {
+          FILE *fp;
+          struct argv_iterator *ai;
+          size_t n_found = 0;
+          if (use_stream)
+            {
+              /* Generate an identical list to be read via FP.  */
+              ASSERT ((fp = write_nul_delimited_argv (av[i])) != NULL);
+              ai = argv_iter_init_stream (fp);
+            }
+          else
+            {
+              fp = NULL;
+              ai = argv_iter_init_argv (av[i]);
+            }
+          ASSERT (ai);
+
+          while (1)
+            {
+              enum argv_iter_err ai_err;
+              char *s = argv_iter (ai, &ai_err);
+              ASSERT ((i == n_found) == (ai_err == AI_ERR_EOF));
+              ASSERT ((s == NULL) ^ (ai_err == AI_ERR_OK));
+              ASSERT (ai_err == AI_ERR_OK || ai_err == AI_ERR_EOF);
+              if (ai_err == AI_ERR_OK)
+                ++n_found;
+              if (ai_err == AI_ERR_EOF)
+                break;
+              /* In stream mode, the strings are equal, but
+                 in argv mode the actual pointers are equal.  */
+              ASSERT (use_stream
+                      ? STREQ (s, av[i][n_found - 1])
+                      : s == av[i][n_found - 1]);
+            }
+          ASSERT (argv_iter_n_args (ai) == i);
+          argv_iter_free (ai);
+          if (fp)
+            ASSERT (fclose (fp) == 0);
+        }
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-arpa_inet.c b/gnulib-tests/test-arpa_inet.c
new file mode 100644
index 0000000..b7234b3
--- /dev/null
+++ b/gnulib-tests/test-arpa_inet.c
@@ -0,0 +1,27 @@
+/* Test of <arpa/inet.h> substitute.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <arpa/inet.h>
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-base32.c b/gnulib-tests/test-base32.c
new file mode 100644
index 0000000..906f411
--- /dev/null
+++ b/gnulib-tests/test-base32.c
@@ -0,0 +1,261 @@
+/* Self tests for base32.
+   Copyright (C) 2004, 2008-2020 Free Software Foundation, Inc.
+   Based on the tests for base64 written by Simon Josefsson.
+   Adapted for base32 by Gijs van Tulder.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "base32.h"
+
+#include <stddef.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  const char *in = "abcdefghijklmnop";
+  const char *b32in = "MFRGGZDFMZTWQ2LKNNWG23TPOA======";
+  char out[255];
+  size_t len;
+  bool ok;
+  char *p;
+
+  memset (out, 0x42, sizeof (out));
+  base32_encode (in, 0, out, 0);
+  ASSERT (out[0] == '\x42');
+
+  memset (out, 0x42, sizeof (out));
+  base32_encode (in, 1, out, 10);
+  ASSERT (memcmp (out, "ME======", 1) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base32_encode (in, 1, out, 2);
+  ASSERT (memcmp (out, "ME======", 2) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base32_encode (in, 1, out, 3);
+  ASSERT (memcmp (out, "ME======", 3) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base32_encode (in, 1, out, 4);
+  ASSERT (memcmp (out, "ME======", 4) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base32_encode (in, 1, out, 8);
+  ASSERT (memcmp (out, "ME======", 8) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base32_encode (in, 2, out, 8);
+  ASSERT (memcmp (out, "MFRA====", 8) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base32_encode (in, 3, out, 8);
+  ASSERT (memcmp (out, "MFRGG===", 8) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base32_encode (in, 4, out, 8);
+  ASSERT (memcmp (out, "MFRGGZA=", 8) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base32_encode (in, 5, out, 8);
+  ASSERT (memcmp (out, "MFRGGZDF", 8) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base32_encode (in, 6, out, 16);
+  ASSERT (memcmp (out, "MFRGGZDFMY======", 16) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base32_encode (in, 6, out, 100);
+  ASSERT (memcmp (out, "MFRGGZDFMY======", 16) == 0);
+
+  /* Decode. */
+
+  memset (out, 0x42, sizeof (out));
+  len = 0;
+  ok = base32_decode (b32in, 8, out, &len);
+  ASSERT (ok);
+  ASSERT (len == 0);
+
+  memset (out, 0x42, sizeof (out));
+  len = 1;
+  ok = base32_decode (b32in, 8, out, &len);
+  ASSERT (ok);
+  ASSERT (len == 1);
+  ASSERT (memcmp (out, "abcdefghijklmnop", 1) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  len = 2;
+  ok = base32_decode (b32in, 8, out, &len);
+  ASSERT (ok);
+  ASSERT (len == 2);
+  ASSERT (memcmp (out, "abcdefghijklmnop", 2) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  len = 3;
+  ok = base32_decode (b32in, 8, out, &len);
+  ASSERT (ok);
+  ASSERT (len == 3);
+  ASSERT (memcmp (out, "abcdefghijklmnop", 3) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  len = 4;
+  ok = base32_decode (b32in, 8, out, &len);
+  ASSERT (ok);
+  ASSERT (len == 4);
+  ASSERT (memcmp (out, "abcdefghijklmnop", 4) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  len = 5;
+  ok = base32_decode (b32in, 8, out, &len);
+  ASSERT (ok);
+  ASSERT (len == 5);
+  ASSERT (memcmp (out, "abcdefghijklmnop", 5) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  len = 6;
+  ok = base32_decode (b32in, 8, out, &len);
+  ASSERT (ok);
+  ASSERT (len == 5);
+  ASSERT (memcmp (out, "abcdefghijklmnop", 5) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  len = 100;
+  ok = base32_decode (b32in, strlen (b32in), out, &len);
+  ASSERT (ok);
+  ASSERT (len == 16);
+  ASSERT (memcmp (out, "abcdefghijklmnop", 16) == 0);
+
+  /* Allocating encode */
+
+  len = base32_encode_alloc (in, strlen (in), &p);
+  ASSERT (len == 32);
+  ASSERT (strcmp (p, "MFRGGZDFMZTWQ2LKNNWG23TPOA======") == 0);
+  free (p);
+
+  len = base32_encode_alloc (in, SIZE_MAX - 5, &p);
+  ASSERT (len == 0);
+
+  /* Decode context function */
+  {
+    struct base32_decode_context ctx;
+
+    base32_decode_ctx_init (&ctx);
+
+    len = sizeof (out);
+    ok = base32_decode_ctx (&ctx, b32in, strlen (b32in), out, &len);
+    ASSERT (ok);
+    ASSERT (len == 16);
+    ASSERT (memcmp (out, "abcdefghijklmnop", len) == 0);
+  }
+
+  /* Allocating decode context function */
+
+  ok = base32_decode_alloc_ctx (NULL, b32in, strlen (b32in), &p, &len);
+  ASSERT (ok);
+  ASSERT (len == 16);
+  ASSERT (memcmp (out, "abcdefghijklmnop", len) == 0);
+  free (p);
+
+  {
+    struct base32_decode_context ctx;
+    const char *newlineb32 = "MFRG\nGZDFMZTWQ2LKNNW\nG23TPOA======";
+
+    base32_decode_ctx_init (&ctx);
+
+    ok = base32_decode_alloc_ctx (&ctx, newlineb32, strlen (newlineb32), &p, &len);
+    ASSERT (ok);
+    ASSERT (len == strlen (in));
+    ASSERT (memcmp (p, in, len) == 0);
+    free (p);
+  }
+
+  {
+    struct base32_decode_context ctx;
+    base32_decode_ctx_init (&ctx);
+
+    ok = base32_decode_alloc_ctx (&ctx, "MFRGGZDFM\nZTWQ2LK", 17, &p, &len);
+    ASSERT (ok);
+    ASSERT (len == 10);
+    ASSERT (memcmp (p, "abcdefghij", len) == 0);
+    free (p);
+
+    base32_decode_ctx_init (&ctx);
+
+    ok = base32_decode_alloc_ctx (&ctx, "MF\n", 3, &p, &len);
+    ASSERT (ok);
+    ASSERT (len == 0);
+    free (p);
+
+    ok = base32_decode_alloc_ctx (&ctx, "RGGZDFMZ", 8, &p, &len);
+    ASSERT (ok);
+    ASSERT (len == 5);
+    ASSERT (memcmp (p, "abcde", len) == 0);
+    free (p);
+
+    ok = base32_decode_alloc_ctx (&ctx, "TWQ2LK", 6, &p, &len);
+    ASSERT (ok);
+    ASSERT (len == 5);
+    ASSERT (memcmp (p, "fghij", len) == 0);
+    free (p);
+
+    ok = base32_decode_alloc_ctx (&ctx, "", 0, &p, &len);
+    ASSERT (ok);
+    free (p);
+  }
+
+  {
+    struct base32_decode_context ctx;
+    const char *newlineb32 = "\n\n\n\n\n";
+
+    base32_decode_ctx_init (&ctx);
+
+    ok = base32_decode_alloc_ctx (&ctx, newlineb32, strlen (newlineb32), &p, &len);
+    ASSERT (ok);
+    ASSERT (len == 0);
+    free (p);
+  }
+
+  ok = base32_decode_alloc_ctx (NULL, " ! ", 3, &p, &len);
+  ASSERT (!ok);
+
+  ok = base32_decode_alloc_ctx (NULL, "ABC\nDEF", 7, &p, &len);
+  ASSERT (!ok);
+
+  ok = base32_decode_alloc_ctx (NULL, "AA", 2, &p, &len);
+  ASSERT (!ok);
+
+  ok = base32_decode_alloc_ctx (NULL, "AA=", 3, &p, &len);
+  ASSERT (!ok);
+
+  ok = base32_decode_alloc_ctx (NULL, "AABBAAxx", 8, &p, &len);
+  ASSERT (!ok);
+
+  ok = base32_decode_alloc_ctx (NULL, "AABBAA=X", 8, &p, &len);
+  ASSERT (!ok);
+
+  ok = base32_decode_alloc_ctx (NULL, "AABBAA=X", 8, &p, &len);
+  ASSERT (!ok);
+
+  ok = base32_decode_alloc_ctx (NULL, "AABBAA=A", 8, &p, &len);
+  ASSERT (!ok);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-base64.c b/gnulib-tests/test-base64.c
new file mode 100644
index 0000000..b59df0d
--- /dev/null
+++ b/gnulib-tests/test-base64.c
@@ -0,0 +1,238 @@
+/* Self tests for base64.
+   Copyright (C) 2004, 2008-2020 Free Software Foundation, Inc.
+   Written by Simon Josefsson.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "base64.h"
+
+#include <stddef.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  const char *in = "abcdefghijklmnop";
+  const char *b64in = "YWJjZGVmZw==";
+  char out[255];
+  size_t len;
+  bool ok;
+  char *p;
+
+  memset (out, 0x42, sizeof (out));
+  base64_encode (in, 0, out, 0);
+  ASSERT (out[0] == '\x42');
+
+  memset (out, 0x42, sizeof (out));
+  base64_encode (in, 1, out, 1);
+  ASSERT (memcmp (out, "YQ==", 1) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base64_encode (in, 1, out, 2);
+  ASSERT (memcmp (out, "YQ==", 2) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base64_encode (in, 1, out, 3);
+  ASSERT (memcmp (out, "YQ==", 3) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base64_encode (in, 1, out, 4);
+  ASSERT (memcmp (out, "YQ==", 4) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base64_encode (in, 1, out, 8);
+  ASSERT (memcmp (out, "YQ==", 4) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base64_encode (in, 2, out, 4);
+  ASSERT (memcmp (out, "YWI=", 4) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base64_encode (in, 3, out, 4);
+  ASSERT (memcmp (out, "YWJj", 4) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base64_encode (in, 4, out, 5);
+  ASSERT (memcmp (out, "YWJjZA==", 5) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  base64_encode (in, 4, out, 100);
+  ASSERT (memcmp (out, "YWJjZA==", 6) == 0);
+
+  /* Decode. */
+
+  memset (out, 0x42, sizeof (out));
+  len = 0;
+  ok = base64_decode (b64in, 4, out, &len);
+  ASSERT (ok);
+  ASSERT (len == 0);
+
+  memset (out, 0x42, sizeof (out));
+  len = 1;
+  ok = base64_decode (b64in, 4, out, &len);
+  ASSERT (ok);
+  ASSERT (len == 1);
+  ASSERT (memcmp (out, "abcdefg", 1) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  len = 2;
+  ok = base64_decode (b64in, 4, out, &len);
+  ASSERT (ok);
+  ASSERT (len == 2);
+  ASSERT (memcmp (out, "abcdefg", 2) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  len = 3;
+  ok = base64_decode (b64in, 4, out, &len);
+  ASSERT (ok);
+  ASSERT (len == 3);
+  ASSERT (memcmp (out, "abcdefg", 3) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  len = 4;
+  ok = base64_decode (b64in, 4, out, &len);
+  ASSERT (ok);
+  ASSERT (len == 3);
+  ASSERT (memcmp (out, "abcdefg", 3) == 0);
+
+  memset (out, 0x42, sizeof (out));
+  len = 100;
+  ok = base64_decode (b64in, strlen (b64in), out, &len);
+  ASSERT (ok);
+  ASSERT (len == 7);
+  ASSERT (memcmp (out, "abcdefg", 7) == 0);
+
+  /* Allocating encode */
+
+  len = base64_encode_alloc (in, strlen (in), &p);
+  ASSERT (len == 24);
+  ASSERT (strcmp (p, "YWJjZGVmZ2hpamtsbW5vcA==") == 0);
+  free (p);
+
+  len = base64_encode_alloc (in, SIZE_MAX - 5, &p);
+  ASSERT (len == 0);
+
+  /* Decode context function */
+  {
+    struct base64_decode_context ctx;
+
+    base64_decode_ctx_init (&ctx);
+
+    len = sizeof (out);
+    ok = base64_decode_ctx (&ctx, b64in, strlen (b64in), out, &len);
+    ASSERT (ok);
+    ASSERT (len == 7);
+    ASSERT (memcmp (out, "abcdefg", len) == 0);
+  }
+
+  /* Allocating decode context function */
+
+  ok = base64_decode_alloc_ctx (NULL, b64in, strlen (b64in), &p, &len);
+  ASSERT (ok);
+  ASSERT (len == 7);
+  ASSERT (memcmp (out, "abcdefg", len) == 0);
+  free (p);
+
+  {
+    struct base64_decode_context ctx;
+    const char *newlineb64 = "YWJjZG\nVmZ2hp\namtsbW5vcA==";
+
+    base64_decode_ctx_init (&ctx);
+
+    ok = base64_decode_alloc_ctx (&ctx, newlineb64, strlen (newlineb64), &p, &len);
+    ASSERT (ok);
+    ASSERT (len == strlen (in));
+    ASSERT (memcmp (p, in, len) == 0);
+    free (p);
+  }
+
+  {
+    struct base64_decode_context ctx;
+    base64_decode_ctx_init (&ctx);
+
+    ok = base64_decode_alloc_ctx (&ctx, "YW\nJjZGVmZ2hp", 13, &p, &len);
+    ASSERT (ok);
+    ASSERT (len == 9);
+    ASSERT (memcmp (p, "abcdefghi", len) == 0);
+    free (p);
+
+    base64_decode_ctx_init (&ctx);
+
+    ok = base64_decode_alloc_ctx (&ctx, "YW\n", 3, &p, &len);
+    ASSERT (ok);
+    ASSERT (len == 0);
+    free (p);
+
+    ok = base64_decode_alloc_ctx (&ctx, "JjZGVmZ2", 8, &p, &len);
+    ASSERT (ok);
+    ASSERT (len == 6);
+    ASSERT (memcmp (p, "abcdef", len) == 0);
+    free (p);
+
+    ok = base64_decode_alloc_ctx (&ctx, "hp", 2, &p, &len);
+    ASSERT (ok);
+    ASSERT (len == 3);
+    ASSERT (memcmp (p, "ghi", len) == 0);
+    free (p);
+
+    ok = base64_decode_alloc_ctx (&ctx, "", 0, &p, &len);
+    ASSERT (ok);
+    free (p);
+  }
+
+  {
+    struct base64_decode_context ctx;
+    const char *newlineb64 = "\n\n\n\n\n";
+
+    base64_decode_ctx_init (&ctx);
+
+    ok = base64_decode_alloc_ctx (&ctx, newlineb64, strlen (newlineb64), &p, &len);
+    ASSERT (ok);
+    ASSERT (len == 0);
+    free (p);
+  }
+
+  ok = base64_decode_alloc_ctx (NULL, " ! ", 3, &p, &len);
+  ASSERT (!ok);
+
+  ok = base64_decode_alloc_ctx (NULL, "abc\ndef", 7, &p, &len);
+  ASSERT (!ok);
+
+  ok = base64_decode_alloc_ctx (NULL, "aa", 2, &p, &len);
+  ASSERT (!ok);
+
+  ok = base64_decode_alloc_ctx (NULL, "aa=", 3, &p, &len);
+  ASSERT (!ok);
+
+  ok = base64_decode_alloc_ctx (NULL, "aax", 3, &p, &len);
+  ASSERT (!ok);
+
+  ok = base64_decode_alloc_ctx (NULL, "aa=X", 4, &p, &len);
+  ASSERT (!ok);
+
+  ok = base64_decode_alloc_ctx (NULL, "aa=X", 4, &p, &len);
+  ASSERT (!ok);
+
+  ok = base64_decode_alloc_ctx (NULL, "aax=X", 5, &p, &len);
+  ASSERT (!ok);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-binary-io.c b/gnulib-tests/test-binary-io.c
new file mode 100644
index 0000000..808b8b5
--- /dev/null
+++ b/gnulib-tests/test-binary-io.c
@@ -0,0 +1,63 @@
+/* Test of binary mode I/O.
+   Copyright (C) 2005, 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.  */
+
+#include <config.h>
+
+#include "binary-io.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  /* Test the O_BINARY macro.  */
+  {
+    int fd =
+      open ("t-bin-out0.tmp", O_CREAT | O_TRUNC | O_RDWR | O_BINARY, 0600);
+    if (write (fd, "Hello\n", 6) < 0)
+      exit (1);
+    close (fd);
+  }
+  {
+    struct stat statbuf;
+    if (stat ("t-bin-out0.tmp", &statbuf) < 0)
+      exit (1);
+    ASSERT (statbuf.st_size == 6);
+  }
+
+  switch (argv[1][0])
+    {
+    case '1':
+      /* Test the set_binary_mode() function.  */
+      set_binary_mode (1, O_BINARY);
+      fputs ("Hello\n", stdout);
+      break;
+
+    default:
+      break;
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-binary-io.sh b/gnulib-tests/test-binary-io.sh
new file mode 100755
index 0000000..a177d94
--- /dev/null
+++ b/gnulib-tests/test-binary-io.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+tmpfiles=""
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles="$tmpfiles t-bin-out0.tmp t-bin-out1.tmp"
+${CHECKER} ./test-binary-io${EXEEXT} 1 > t-bin-out1.tmp || exit 1
+cmp t-bin-out0.tmp t-bin-out1.tmp > /dev/null || exit 1
+
+rm -fr $tmpfiles
+
+exit 0
diff --git a/gnulib-tests/test-bind.c b/gnulib-tests/test-bind.c
new file mode 100644
index 0000000..2f38de9
--- /dev/null
+++ b/gnulib-tests/test-bind.c
@@ -0,0 +1,58 @@
+/* Test binding a server socket to a port.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/socket.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (bind, int, (int, const struct sockaddr *, socklen_t));
+
+#include <errno.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+
+#include "sockets.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  (void) gl_sockets_startup (SOCKETS_1_1);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    struct sockaddr_in addr;
+
+    addr.sin_family = AF_INET;
+    inet_pton (AF_INET, "127.0.0.1", &addr.sin_addr);
+    addr.sin_port = htons (80);
+    {
+      errno = 0;
+      ASSERT (bind (-1, (const struct sockaddr *) &addr, sizeof (addr)) == -1);
+      ASSERT (errno == EBADF);
+    }
+    {
+      close (99);
+      errno = 0;
+      ASSERT (bind (99, (const struct sockaddr *) &addr, sizeof (addr)) == -1);
+      ASSERT (errno == EBADF);
+    }
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-bitrotate.c b/gnulib-tests/test-bitrotate.c
new file mode 100644
index 0000000..0007d1c
--- /dev/null
+++ b/gnulib-tests/test-bitrotate.c
@@ -0,0 +1,279 @@
+/* Test of <bitrotate.h> substitute.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson <simon@josefsson.org>, 2008.  */
+
+#include <config.h>
+
+#include "bitrotate.h"
+
+#include "macros.h"
+
+int
+main (void)
+{
+  ASSERT (rotl8 (42, 0) == 42);
+  ASSERT (rotl8 (42, 1) == 84);
+  ASSERT (rotl8 (42, 2) == 168);
+  ASSERT (rotl8 (42, 3) == 81);
+  ASSERT (rotl8 (42, 4) == 162);
+  ASSERT (rotl8 (42, 5) == 69);
+  ASSERT (rotl8 (42, 6) == 138);
+  ASSERT (rotl8 (42, 7) == 21);
+  ASSERT (rotl8 (42, 8) == 42);
+
+  ASSERT (rotr8 (42, 0) == 42);
+  ASSERT (rotr8 (42, 1) == 21);
+  ASSERT (rotr8 (42, 2) == 138);
+  ASSERT (rotr8 (42, 3) == 69);
+  ASSERT (rotr8 (42, 4) == 162);
+  ASSERT (rotr8 (42, 5) == 81);
+  ASSERT (rotr8 (42, 6) == 168);
+  ASSERT (rotr8 (42, 7) == 84);
+  ASSERT (rotr8 (42, 8) == 42);
+
+  ASSERT (rotl16 (43981, 0) == 43981);
+  ASSERT (rotl16 (43981, 1) == 22427);
+  ASSERT (rotl16 (43981, 2) == 44854);
+  ASSERT (rotl16 (43981, 3) == 24173);
+  ASSERT (rotl16 (43981, 4) == 48346);
+  ASSERT (rotl16 (43981, 5) == 31157);
+  ASSERT (rotl16 (43981, 6) == 62314);
+  ASSERT (rotl16 (43981, 7) == 59093);
+  ASSERT (rotl16 (43981, 8) == 52651);
+  ASSERT (rotl16 (43981, 9) == 39767);
+  ASSERT (rotl16 (43981, 10) == 13999);
+  ASSERT (rotl16 (43981, 11) == 27998);
+  ASSERT (rotl16 (43981, 12) == 55996);
+  ASSERT (rotl16 (43981, 13) == 46457);
+  ASSERT (rotl16 (43981, 14) == 27379);
+  ASSERT (rotl16 (43981, 15) == 54758);
+  ASSERT (rotl16 (43981, 16) == 43981);
+
+  ASSERT (rotr16 (43981, 0) == 43981);
+  ASSERT (rotr16 (43981, 1) == 54758);
+  ASSERT (rotr16 (43981, 2) == 27379);
+  ASSERT (rotr16 (43981, 3) == 46457);
+  ASSERT (rotr16 (43981, 4) == 55996);
+  ASSERT (rotr16 (43981, 5) == 27998);
+  ASSERT (rotr16 (43981, 6) == 13999);
+  ASSERT (rotr16 (43981, 7) == 39767);
+  ASSERT (rotr16 (43981, 8) == 52651);
+  ASSERT (rotr16 (43981, 9) == 59093);
+  ASSERT (rotr16 (43981, 10) == 62314);
+  ASSERT (rotr16 (43981, 11) == 31157);
+  ASSERT (rotr16 (43981, 12) == 48346);
+  ASSERT (rotr16 (43981, 13) == 24173);
+  ASSERT (rotr16 (43981, 14) == 44854);
+  ASSERT (rotr16 (43981, 15) == 22427);
+  ASSERT (rotr16 (43981, 16) == 43981);
+
+  ASSERT (rotl32 (2309737967U, 1) == 324508639U);
+  ASSERT (rotl32 (2309737967U, 2) == 649017278U);
+  ASSERT (rotl32 (2309737967U, 3) == 1298034556U);
+  ASSERT (rotl32 (2309737967U, 4) == 2596069112U);
+  ASSERT (rotl32 (2309737967U, 5) == 897170929U);
+  ASSERT (rotl32 (2309737967U, 6) == 1794341858U);
+  ASSERT (rotl32 (2309737967U, 7) == 3588683716U);
+  ASSERT (rotl32 (2309737967U, 8) == 2882400137U);
+  ASSERT (rotl32 (2309737967U, 9) == 1469832979U);
+  ASSERT (rotl32 (2309737967U, 10) == 2939665958U);
+  ASSERT (rotl32 (2309737967U, 11) == 1584364621U);
+  ASSERT (rotl32 (2309737967U, 12) == 3168729242U);
+  ASSERT (rotl32 (2309737967U, 13) == 2042491189U);
+  ASSERT (rotl32 (2309737967U, 14) == 4084982378U);
+  ASSERT (rotl32 (2309737967U, 15) == 3874997461U);
+  ASSERT (rotl32 (2309737967U, 16) == 3455027627U);
+  ASSERT (rotl32 (2309737967U, 17) == 2615087959U);
+  ASSERT (rotl32 (2309737967U, 18) == 935208623U);
+  ASSERT (rotl32 (2309737967U, 19) == 1870417246U);
+  ASSERT (rotl32 (2309737967U, 20) == 3740834492U);
+  ASSERT (rotl32 (2309737967U, 21) == 3186701689U);
+  ASSERT (rotl32 (2309737967U, 22) == 2078436083U);
+  ASSERT (rotl32 (2309737967U, 23) == 4156872166U);
+  ASSERT (rotl32 (2309737967U, 24) == 4018777037U);
+  ASSERT (rotl32 (2309737967U, 25) == 3742586779U);
+  ASSERT (rotl32 (2309737967U, 26) == 3190206263U);
+  ASSERT (rotl32 (2309737967U, 27) == 2085445231U);
+  ASSERT (rotl32 (2309737967U, 28) == 4170890462U);
+  ASSERT (rotl32 (2309737967U, 29) == 4046813629U);
+  ASSERT (rotl32 (2309737967U, 30) == 3798659963U);
+  ASSERT (rotl32 (2309737967U, 31) == 3302352631U);
+
+  ASSERT (rotr32 (2309737967U, 1) == 3302352631lU);
+  ASSERT (rotr32 (2309737967U, 2) == 3798659963lU);
+  ASSERT (rotr32 (2309737967U, 3) == 4046813629lU);
+  ASSERT (rotr32 (2309737967U, 4) == 4170890462lU);
+  ASSERT (rotr32 (2309737967U, 5) == 2085445231lU);
+  ASSERT (rotr32 (2309737967U, 6) == 3190206263lU);
+  ASSERT (rotr32 (2309737967U, 7) == 3742586779lU);
+  ASSERT (rotr32 (2309737967U, 8) == 4018777037lU);
+  ASSERT (rotr32 (2309737967U, 9) == 4156872166lU);
+  ASSERT (rotr32 (2309737967U, 10) == 2078436083lU);
+  ASSERT (rotr32 (2309737967U, 11) == 3186701689lU);
+  ASSERT (rotr32 (2309737967U, 12) == 3740834492lU);
+  ASSERT (rotr32 (2309737967U, 13) == 1870417246lU);
+  ASSERT (rotr32 (2309737967U, 14) == 935208623lU);
+  ASSERT (rotr32 (2309737967U, 15) == 2615087959lU);
+  ASSERT (rotr32 (2309737967U, 16) == 3455027627lU);
+  ASSERT (rotr32 (2309737967U, 17) == 3874997461lU);
+  ASSERT (rotr32 (2309737967U, 18) == 4084982378lU);
+  ASSERT (rotr32 (2309737967U, 19) == 2042491189lU);
+  ASSERT (rotr32 (2309737967U, 20) == 3168729242lU);
+  ASSERT (rotr32 (2309737967U, 21) == 1584364621lU);
+  ASSERT (rotr32 (2309737967U, 22) == 2939665958lU);
+  ASSERT (rotr32 (2309737967U, 23) == 1469832979lU);
+  ASSERT (rotr32 (2309737967U, 24) == 2882400137lU);
+  ASSERT (rotr32 (2309737967U, 25) == 3588683716lU);
+  ASSERT (rotr32 (2309737967U, 26) == 1794341858lU);
+  ASSERT (rotr32 (2309737967U, 27) == 897170929lU);
+  ASSERT (rotr32 (2309737967U, 28) == 2596069112lU);
+  ASSERT (rotr32 (2309737967U, 29) == 1298034556lU);
+  ASSERT (rotr32 (2309737967U, 30) == 649017278lU);
+  ASSERT (rotr32 (2309737967U, 31) == 324508639lU);
+
+#ifdef UINT64_MAX
+  ASSERT (rotl64 (16045690984503098046ULL, 1) == 13644637895296644477ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 2) == 8842531716883737339ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 3) == 17685063433767474678ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 4) == 16923382793825397741ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 5) == 15400021513941243867ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 6) == 12353298954172936119ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 7) == 6259853834636320623ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 8) == 12519707669272641246ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 9) == 6592671264835730877ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 10) == 13185342529671461754ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 11) == 7923940985633371893ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 12) == 15847881971266743786ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 13) == 13249019868823935957ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 14) == 8051295663938320299ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 15) == 16102591327876640598ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 16) == 13758438582043729581ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 17) == 9070133090377907547ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 18) == 18140266180755815094ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 19) == 17833788287802078573ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 20) == 17220832501894605531ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 21) == 15994920930079659447ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 22) == 13543097786449767279ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 23) == 8639451499189982943ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 24) == 17278902998379965886ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 25) == 16111061923050380157ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 26) == 13775379772391208699ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 27) == 9104015471072865783ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 28) == 18208030942145731566ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 29) == 17969317810581911517ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 30) == 17491891547454271419ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 31) == 16537039021198991223ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 32) == 14627333968688430831ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 33) == 10807923863667310047ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 34) == 3169103653625068479ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 35) == 6338207307250136958ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 36) == 12676414614500273916ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 37) == 6906085155290996217ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 38) == 13812170310581992434ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 39) == 9177596547454433253ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 40) == 18355193094908866506ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 41) == 18263642116108181397ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 42) == 18080540158506811179ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 43) == 17714336243304070743ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 44) == 16981928412898589871ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 45) == 15517112752087628127ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 46) == 12587481430465704639ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 47) == 6728218787221857663ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 48) == 13456437574443715326ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 49) == 8466131075177879037ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 50) == 16932262150355758074ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 51) == 15417780227001964533ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 52) == 12388816380294377451ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 53) == 6330888686879203287ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 54) == 12661777373758406574ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 55) == 6876810673807261533ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 56) == 13753621347614523066ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 57) == 9060498621519494517ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 58) == 18120997243038989034ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 59) == 17795250412368426453ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 60) == 17143756751027301291ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 61) == 15840769428345050967ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 62) == 13234794782980550319ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 63) == 8022845492251549023ULL);
+
+  ASSERT (rotr64 (16045690984503098046ULL, 1) == 8022845492251549023ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 2) == 13234794782980550319ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 3) == 15840769428345050967ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 4) == 17143756751027301291ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 5) == 17795250412368426453ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 6) == 18120997243038989034ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 7) == 9060498621519494517ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 8) == 13753621347614523066ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 9) == 6876810673807261533ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 10) == 12661777373758406574ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 11) == 6330888686879203287ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 12) == 12388816380294377451ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 13) == 15417780227001964533ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 14) == 16932262150355758074ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 15) == 8466131075177879037ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 16) == 13456437574443715326ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 17) == 6728218787221857663ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 18) == 12587481430465704639ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 19) == 15517112752087628127ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 20) == 16981928412898589871ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 21) == 17714336243304070743ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 22) == 18080540158506811179ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 23) == 18263642116108181397ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 24) == 18355193094908866506ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 25) == 9177596547454433253ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 26) == 13812170310581992434ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 27) == 6906085155290996217ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 28) == 12676414614500273916ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 29) == 6338207307250136958ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 30) == 3169103653625068479ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 31) == 10807923863667310047ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 32) == 14627333968688430831ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 33) == 16537039021198991223ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 34) == 17491891547454271419ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 35) == 17969317810581911517ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 36) == 18208030942145731566ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 37) == 9104015471072865783ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 38) == 13775379772391208699ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 39) == 16111061923050380157ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 40) == 17278902998379965886ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 41) == 8639451499189982943ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 42) == 13543097786449767279ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 43) == 15994920930079659447ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 44) == 17220832501894605531ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 45) == 17833788287802078573ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 46) == 18140266180755815094ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 47) == 9070133090377907547ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 48) == 13758438582043729581ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 49) == 16102591327876640598ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 50) == 8051295663938320299ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 51) == 13249019868823935957ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 52) == 15847881971266743786ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 53) == 7923940985633371893ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 54) == 13185342529671461754ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 55) == 6592671264835730877ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 56) == 12519707669272641246ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 57) == 6259853834636320623ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 58) == 12353298954172936119ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 59) == 15400021513941243867ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 60) == 16923382793825397741ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 61) == 17685063433767474678ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 62) == 8842531716883737339ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 63) == 13644637895296644477ULL);
+#endif /* UINT64_MAX */
+
+  return 0;
+}
diff --git a/gnulib-tests/test-btowc.c b/gnulib-tests/test-btowc.c
new file mode 100644
index 0000000..18ad71b
--- /dev/null
+++ b/gnulib-tests/test-btowc.c
@@ -0,0 +1,63 @@
+/* Test of conversion of unibyte character to wide character.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (btowc, wint_t, (int));
+
+#include <locale.h>
+#include <stdio.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  int c;
+
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  ASSERT (btowc (EOF) == WEOF);
+
+  if (argc > 1)
+    switch (argv[1][0])
+      {
+      case '1':
+        /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
+        for (c = 0; c < 0x80; c++)
+          ASSERT (btowc (c) == c);
+        for (c = 0xA0; c < 0x100; c++)
+          ASSERT (btowc (c) != WEOF);
+        return 0;
+
+      case '2':
+        /* Locale encoding is UTF-8.  */
+        for (c = 0; c < 0x80; c++)
+          ASSERT (btowc (c) == c);
+        for (c = 0x80; c < 0x100; c++)
+          ASSERT (btowc (c) == WEOF);
+        return 0;
+      }
+
+  return 1;
+}
diff --git a/gnulib-tests/test-btowc1.sh b/gnulib-tests/test-btowc1.sh
new file mode 100755
index 0000000..ab4b287
--- /dev/null
+++ b/gnulib-tests/test-btowc1.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test in an ISO-8859-1 or ISO-8859-15 locale.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no traditional french locale is installed"
+  else
+    echo "Skipping test: no traditional french locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_FR \
+${CHECKER} ./test-btowc${EXEEXT} 1
diff --git a/gnulib-tests/test-btowc2.sh b/gnulib-tests/test-btowc2.sh
new file mode 100755
index 0000000..d7d4d9c
--- /dev/null
+++ b/gnulib-tests/test-btowc2.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no french Unicode locale is installed"
+  else
+    echo "Skipping test: no french Unicode locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_FR_UTF8 \
+${CHECKER} ./test-btowc${EXEEXT} 2
diff --git a/gnulib-tests/test-byteswap.c b/gnulib-tests/test-byteswap.c
new file mode 100644
index 0000000..e499838
--- /dev/null
+++ b/gnulib-tests/test-byteswap.c
@@ -0,0 +1,32 @@
+/* Test of <byteswap.h> substitute.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <byteswap.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  ASSERT (bswap_16 (0xABCD) == 0xCDAB);
+  ASSERT (bswap_32 (0xDEADBEEF) == 0xEFBEADDE);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-c-ctype.c b/gnulib-tests/test-c-ctype.c
new file mode 100644
index 0000000..0cf1fdf
--- /dev/null
+++ b/gnulib-tests/test-c-ctype.c
@@ -0,0 +1,228 @@
+/* Test of character handling in C locale.
+   Copyright (C) 2005, 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.  */
+
+#include <config.h>
+
+#include "c-ctype.h"
+
+#include <ctype.h>
+#include <limits.h>
+#include <locale.h>
+
+#include "macros.h"
+
+static void
+test_agree_with_C_locale (void)
+{
+  int c;
+
+  for (c = 0; c <= UCHAR_MAX; c++)
+    {
+      ASSERT (c_isascii (c) == (isascii (c) != 0));
+      if (c_isascii (c))
+        {
+          ASSERT (c_isalnum (c) == (isalnum (c) != 0));
+          ASSERT (c_isalpha (c) == (isalpha (c) != 0));
+          ASSERT (c_isblank (c) == (isblank (c) != 0));
+          ASSERT (c_iscntrl (c) == (iscntrl (c) != 0));
+          ASSERT (c_isdigit (c) == (isdigit (c) != 0));
+          ASSERT (c_islower (c) == (islower (c) != 0));
+          ASSERT (c_isgraph (c) == (isgraph (c) != 0));
+          ASSERT (c_isprint (c) == (isprint (c) != 0));
+          ASSERT (c_ispunct (c) == (ispunct (c) != 0));
+          ASSERT (c_isspace (c) == (isspace (c) != 0));
+          ASSERT (c_isupper (c) == (isupper (c) != 0));
+          ASSERT (c_isxdigit (c) == (isxdigit (c) != 0));
+          ASSERT (c_tolower (c) == tolower (c));
+          ASSERT (c_toupper (c) == toupper (c));
+        }
+    }
+}
+
+static void
+test_all (void)
+{
+  int c;
+  int n_isascii = 0;
+
+  for (c = CHAR_MIN; c <= UCHAR_MAX; c++)
+    {
+      if (! (0 <= c && c <= CHAR_MAX))
+        {
+          ASSERT (! c_isascii (c));
+          ASSERT (! c_isalnum (c));
+          ASSERT (! c_isalpha (c));
+          ASSERT (! c_isblank (c));
+          ASSERT (! c_iscntrl (c));
+          ASSERT (! c_isdigit (c));
+          ASSERT (! c_islower (c));
+          ASSERT (! c_isgraph (c));
+          ASSERT (! c_isprint (c));
+          ASSERT (! c_ispunct (c));
+          ASSERT (! c_isspace (c));
+          ASSERT (! c_isupper (c));
+          ASSERT (! c_isxdigit (c));
+          ASSERT (c_tolower (c) == c);
+          ASSERT (c_toupper (c) == c);
+        }
+
+      n_isascii += c_isascii (c);
+
+#ifdef C_CTYPE_ASCII
+      ASSERT (c_isascii (c) == (0 <= c && c <= 0x7f));
+#endif
+
+      ASSERT (c_isascii (c) == (c_isprint (c) || c_iscntrl (c)));
+
+      ASSERT (c_isalnum (c) == (c_isalpha (c) || c_isdigit (c)));
+
+      ASSERT (c_isalpha (c) == (c_islower (c) || c_isupper (c)));
+
+      switch (c)
+        {
+        case '\t': case ' ':
+          ASSERT (c_isblank (c) == 1);
+          break;
+        default:
+          ASSERT (c_isblank (c) == 0);
+          break;
+        }
+
+#ifdef C_CTYPE_ASCII
+      ASSERT (c_iscntrl (c) == ((c >= 0 && c < 0x20) || c == 0x7f));
+#endif
+
+      switch (c)
+        {
+        case '\a': case '\b': case '\f': case '\n':
+        case '\r': case '\t': case '\v':
+          ASSERT (c_iscntrl (c));
+          break;
+        }
+
+      ASSERT (! (c_iscntrl (c) && c_isprint (c)));
+
+      switch (c)
+        {
+        case '0': case '1': case '2': case '3': case '4': case '5':
+        case '6': case '7': case '8': case '9':
+          ASSERT (c_isdigit (c) == 1);
+          break;
+        default:
+          ASSERT (c_isdigit (c) == 0);
+          break;
+        }
+
+      switch (c)
+        {
+        case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
+        case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
+        case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
+        case 's': case 't': case 'u': case 'v': case 'w': case 'x':
+        case 'y': case 'z':
+          ASSERT (c_islower (c) == 1);
+          ASSERT (c_toupper (c) == c - 'a' + 'A');
+          break;
+        default:
+          ASSERT (c_islower (c) == 0);
+          ASSERT (c_toupper (c) == c);
+          break;
+        }
+
+#ifdef C_CTYPE_ASCII
+      ASSERT (c_isgraph (c) == ((c >= 0x20 && c < 0x7f) && c != ' '));
+
+      ASSERT (c_isprint (c) == (c >= 0x20 && c < 0x7f));
+#endif
+
+      ASSERT (c_isgraph (c) == (c_isalnum (c) || c_ispunct (c)));
+
+      ASSERT (c_isprint (c) == (c_isgraph (c) || c == ' '));
+
+      switch (c)
+        {
+        case '!': case '"': case '#': case '$': case '%': case '&': case '\'':
+        case '(': case ')': case '*': case '+': case ',': case '-': case '.':
+        case '/': case ':': case ';': case '<': case '=': case '>': case '?':
+        case '@': case '[': case'\\': case ']': case '^': case '_': case '`':
+        case '{': case '|': case '}': case '~':
+          ASSERT (c_ispunct (c) == 1);
+          break;
+        default:
+          ASSERT (c_ispunct (c) == 0);
+          break;
+        }
+
+      switch (c)
+        {
+        case ' ': case '\t': case '\n': case '\v': case '\f': case '\r':
+          ASSERT (c_isspace (c) == 1);
+          break;
+        default:
+          ASSERT (c_isspace (c) == 0);
+          break;
+        }
+
+      switch (c)
+        {
+        case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+        case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
+        case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
+        case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
+        case 'Y': case 'Z':
+          ASSERT (c_isupper (c) == 1);
+          ASSERT (c_tolower (c) == c - 'A' + 'a');
+          break;
+        default:
+          ASSERT (c_isupper (c) == 0);
+          ASSERT (c_tolower (c) == c);
+          break;
+        }
+
+      switch (c)
+        {
+        case '0': case '1': case '2': case '3': case '4': case '5':
+        case '6': case '7': case '8': case '9':
+        case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+        case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
+          ASSERT (c_isxdigit (c) == 1);
+          break;
+        default:
+          ASSERT (c_isxdigit (c) == 0);
+          break;
+        }
+    }
+
+  ASSERT (n_isascii == 128);
+}
+
+int
+main ()
+{
+  test_agree_with_C_locale ();
+
+  test_all ();
+
+  setlocale (LC_ALL, "de_DE");
+  test_all ();
+
+  setlocale (LC_ALL, "ja_JP.EUC-JP");
+  test_all ();
+
+  return 0;
+}
diff --git a/gnulib-tests/test-c-strcase.sh b/gnulib-tests/test-c-strcase.sh
new file mode 100755
index 0000000..14bdfb2
--- /dev/null
+++ b/gnulib-tests/test-c-strcase.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+# Test in the C locale.
+${CHECKER} ./test-c-strcasecmp${EXEEXT} || exit 1
+${CHECKER} ./test-c-strncasecmp${EXEEXT} || exit 1
+
+# Test in an ISO-8859-1 or ISO-8859-15 locale.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR ${CHECKER} ./test-c-strcasecmp${EXEEXT} locale || exit 1
+  LC_ALL=$LOCALE_FR ${CHECKER} ./test-c-strncasecmp${EXEEXT} locale || exit 1
+fi
+
+# Test in a Turkish UTF-8 locale.
+: ${LOCALE_TR_UTF8=tr_TR.UTF-8}
+if test $LOCALE_TR_UTF8 != none; then
+  LC_ALL=$LOCALE_TR_UTF8 ${CHECKER} ./test-c-strcasecmp${EXEEXT} locale || exit 1
+  LC_ALL=$LOCALE_TR_UTF8 ${CHECKER} ./test-c-strncasecmp${EXEEXT} locale || exit 1
+fi
+
+exit 0
diff --git a/gnulib-tests/test-c-strcasecmp.c b/gnulib-tests/test-c-strcasecmp.c
new file mode 100644
index 0000000..c73cb9d
--- /dev/null
+++ b/gnulib-tests/test-c-strcasecmp.c
@@ -0,0 +1,68 @@
+/* Test of case-insensitive string comparison function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "c-strcase.h"
+#include "c-ctype.h"
+
+#include <locale.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  if (argc > 1)
+    {
+      /* configure should already have checked that the locale is supported.  */
+      if (setlocale (LC_ALL, "") == NULL)
+        return 1;
+    }
+
+  ASSERT (c_strcasecmp ("paragraph", "Paragraph") == 0);
+
+  ASSERT (c_strcasecmp ("paragrapH", "parAgRaph") == 0);
+
+  ASSERT (c_strcasecmp ("paragraph", "paraLyzed") < 0);
+  ASSERT (c_strcasecmp ("paraLyzed", "paragraph") > 0);
+
+  ASSERT (c_strcasecmp ("para", "paragraph") < 0);
+  ASSERT (c_strcasecmp ("paragraph", "para") > 0);
+
+  /* The following tests shows how c_strcasecmp() is different from
+     strcasecmp().  */
+
+  ASSERT (c_strcasecmp ("\311mile", "\351mile") < 0);
+  ASSERT (c_strcasecmp ("\351mile", "\311mile") > 0);
+
+  /* The following tests shows how c_strcasecmp() is different from
+     mbscasecmp().  */
+
+  ASSERT (c_strcasecmp ("\303\266zg\303\274r", "\303\226ZG\303\234R") > 0); /* özgür */
+  ASSERT (c_strcasecmp ("\303\226ZG\303\234R", "\303\266zg\303\274r") < 0); /* özgür */
+
+#if C_CTYPE_ASCII
+  /* This test shows how strings of different size cannot compare equal.  */
+  ASSERT (c_strcasecmp ("turkish", "TURK\304\260SH") < 0);
+  ASSERT (c_strcasecmp ("TURK\304\260SH", "turkish") > 0);
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-c-strncasecmp.c b/gnulib-tests/test-c-strncasecmp.c
new file mode 100644
index 0000000..bbef54f
--- /dev/null
+++ b/gnulib-tests/test-c-strncasecmp.c
@@ -0,0 +1,82 @@
+/* Test of case-insensitive string comparison function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "c-strcase.h"
+#include "c-ctype.h"
+
+#include <locale.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  if (argc > 1)
+    {
+      /* configure should already have checked that the locale is supported.  */
+      if (setlocale (LC_ALL, "") == NULL)
+        return 1;
+    }
+
+  ASSERT (c_strncasecmp ("paragraph", "Paragraph", 1000000) == 0);
+  ASSERT (c_strncasecmp ("paragraph", "Paragraph", 9) == 0);
+
+  ASSERT (c_strncasecmp ("paragrapH", "parAgRaph", 1000000) == 0);
+  ASSERT (c_strncasecmp ("paragrapH", "parAgRaph", 9) == 0);
+
+  ASSERT (c_strncasecmp ("paragraph", "paraLyzed", 10) < 0);
+  ASSERT (c_strncasecmp ("paragraph", "paraLyzed", 9) < 0);
+  ASSERT (c_strncasecmp ("paragraph", "paraLyzed", 5) < 0);
+  ASSERT (c_strncasecmp ("paragraph", "paraLyzed", 4) == 0);
+  ASSERT (c_strncasecmp ("paraLyzed", "paragraph", 10) > 0);
+  ASSERT (c_strncasecmp ("paraLyzed", "paragraph", 9) > 0);
+  ASSERT (c_strncasecmp ("paraLyzed", "paragraph", 5) > 0);
+  ASSERT (c_strncasecmp ("paraLyzed", "paragraph", 4) == 0);
+
+  ASSERT (c_strncasecmp ("para", "paragraph", 10) < 0);
+  ASSERT (c_strncasecmp ("para", "paragraph", 9) < 0);
+  ASSERT (c_strncasecmp ("para", "paragraph", 5) < 0);
+  ASSERT (c_strncasecmp ("para", "paragraph", 4) == 0);
+  ASSERT (c_strncasecmp ("paragraph", "para", 10) > 0);
+  ASSERT (c_strncasecmp ("paragraph", "para", 9) > 0);
+  ASSERT (c_strncasecmp ("paragraph", "para", 5) > 0);
+  ASSERT (c_strncasecmp ("paragraph", "para", 4) == 0);
+
+  /* The following tests shows how c_strncasecmp() is different from
+     strncasecmp().  */
+
+  ASSERT (c_strncasecmp ("\311mily", "\351mile", 4) < 0);
+  ASSERT (c_strncasecmp ("\351mile", "\311mily", 4) > 0);
+
+  /* The following tests shows how c_strncasecmp() is different from
+     mbsncasecmp().  */
+
+  ASSERT (c_strncasecmp ("\303\266zg\303\274r", "\303\226ZG\303\234R", 99) > 0); /* özgür */
+  ASSERT (c_strncasecmp ("\303\226ZG\303\234R", "\303\266zg\303\274r", 99) < 0); /* özgür */
+
+#if C_CTYPE_ASCII
+  /* This test shows how strings of different size cannot compare equal.  */
+  ASSERT (c_strncasecmp ("turkish", "TURK\304\260SH", 7) < 0);
+  ASSERT (c_strncasecmp ("TURK\304\260SH", "turkish", 7) > 0);
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-calloc-gnu.c b/gnulib-tests/test-calloc-gnu.c
new file mode 100644
index 0000000..c13ba47
--- /dev/null
+++ b/gnulib-tests/test-calloc-gnu.c
@@ -0,0 +1,55 @@
+/* Test of calloc function.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+/* Return 8.
+   Usual compilers are not able to infer something about the return value.  */
+static unsigned int
+eight (void)
+{
+  unsigned int x = rand ();
+  unsigned int y = x * x * x * x;
+  x++; y |= x * x * x * x;
+  x++; y |= x * x * x * x;
+  x++; y |= x * x * x * x;
+  y = y >> 1;
+  return y & -y;
+}
+
+int
+main ()
+{
+  /* Check that calloc (0, 0) is not a NULL pointer.  */
+  void *p = calloc (0, 0);
+  if (p == NULL)
+    return 1;
+  free (p);
+
+  /* Check that calloc fails when requested to allocate a block of memory
+     larger than SIZE_MAX bytes.
+     We use eight (), not 8, to avoid a compiler warning from GCC 7.  */
+  p = calloc ((size_t) -1 / 8 + 1, eight ());
+  if (p != NULL)
+    {
+      free (p);
+      return 1;
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-canonicalize.c b/gnulib-tests/test-canonicalize.c
new file mode 100644
index 0000000..e0b623f
--- /dev/null
+++ b/gnulib-tests/test-canonicalize.c
@@ -0,0 +1,375 @@
+/* Test of execution of file name canonicalization.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+/* Don't use __attribute__ __nonnull__ in this compilation unit.  Otherwise gcc
+   may "optimize" the null_ptr function, when its result gets passed to a
+   function that has an argument declared as _GL_ARG_NONNULL.  */
+#define _GL_ARG_NONNULL(params)
+
+#include <config.h>
+
+#include "canonicalize.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "same-inode.h"
+#include "ignore-value.h"
+
+#if GNULIB_defined_canonicalize_file_name
+# include "null-ptr.h"
+#endif
+
+#include "macros.h"
+
+#define BASE "t-can.tmp"
+
+int
+main (void)
+{
+  /* Setup some hierarchy to be used by this test.  Start by removing
+     any leftovers from a previous partial run.  */
+  {
+    int fd;
+    ignore_value (system ("rm -rf " BASE " ise"));
+    ASSERT (mkdir (BASE, 0700) == 0);
+    fd = creat (BASE "/tra", 0600);
+    ASSERT (0 <= fd);
+    ASSERT (close (fd) == 0);
+  }
+
+  /* Check for ., .., intermediate // handling, and for error cases.  */
+  {
+    char *result1 = canonicalize_file_name (BASE "//./..//" BASE "/tra");
+    char *result2 = canonicalize_filename_mode (BASE "//./..//" BASE "/tra",
+                                                CAN_EXISTING);
+    ASSERT (result1 != NULL);
+    ASSERT (result2 != NULL);
+    ASSERT (strcmp (result1, result2) == 0);
+    ASSERT (strstr (result1, "/" BASE "/tra")
+            == result1 + strlen (result1) - strlen ("/" BASE "/tra"));
+    free (result1);
+    free (result2);
+
+    errno = 0;
+    result1 = canonicalize_file_name ("");
+    ASSERT (result1 == NULL);
+    ASSERT (errno == ENOENT);
+
+    errno = 0;
+    result2 = canonicalize_filename_mode ("", CAN_EXISTING);
+    ASSERT (result2 == NULL);
+    ASSERT (errno == ENOENT);
+
+    /* This test works only if the canonicalize_file_name implementation
+       comes from gnulib.  If it comes from libc, we have no way to prevent
+       gcc from "optimizing" the null_ptr function in invalid ways.  See
+       <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93156>.  */
+#if GNULIB_defined_canonicalize_file_name
+    errno = 0;
+    result1 = canonicalize_file_name (null_ptr ());
+    ASSERT (result1 == NULL);
+    ASSERT (errno == EINVAL);
+#endif
+
+    errno = 0;
+    result2 = canonicalize_filename_mode (NULL, CAN_EXISTING);
+    ASSERT (result2 == NULL);
+    ASSERT (errno == EINVAL);
+
+    errno = 0;
+    result2 = canonicalize_filename_mode (".", CAN_MISSING | CAN_ALL_BUT_LAST);
+    ASSERT (result2 == NULL);
+    ASSERT (errno == EINVAL);
+  }
+
+  /* Check that a non-directory with trailing slash yields NULL.  */
+  {
+    char *result1;
+    char *result2;
+    errno = 0;
+    result1 = canonicalize_file_name (BASE "/tra/");
+    ASSERT (result1 == NULL);
+    ASSERT (errno == ENOTDIR);
+    errno = 0;
+    result2 = canonicalize_filename_mode (BASE "/tra/", CAN_EXISTING);
+    ASSERT (result2 == NULL);
+    ASSERT (errno == ENOTDIR);
+  }
+
+  /* Check that a missing directory yields NULL.  */
+  {
+    char *result1;
+    char *result2;
+    errno = 0;
+    result1 = canonicalize_file_name (BASE "/zzz/..");
+    ASSERT (result1 == NULL);
+    ASSERT (errno == ENOENT);
+    errno = 0;
+    result2 = canonicalize_filename_mode (BASE "/zzz/..", CAN_EXISTING);
+    ASSERT (result2 == NULL);
+    ASSERT (errno == ENOENT);
+  }
+
+  /* From here on out, tests involve symlinks.  */
+  if (symlink (BASE "/ket", "ise") != 0)
+    {
+      ASSERT (remove (BASE "/tra") == 0);
+      ASSERT (rmdir (BASE) == 0);
+      fputs ("skipping test: symlinks not supported on this file system\n",
+             stderr);
+      return 77;
+    }
+  ASSERT (symlink ("bef", BASE "/plo") == 0);
+  ASSERT (symlink ("tra", BASE "/huk") == 0);
+  ASSERT (symlink ("lum", BASE "/bef") == 0);
+  ASSERT (symlink ("wum", BASE "/ouk") == 0);
+  ASSERT (symlink ("../ise", BASE "/ket") == 0);
+  ASSERT (mkdir (BASE "/lum", 0700) == 0);
+  ASSERT (symlink ("s", BASE "/p") == 0);
+  ASSERT (symlink ("d", BASE "/s") == 0);
+  ASSERT (mkdir (BASE "/d", 0700) == 0);
+  ASSERT (close (creat (BASE "/d/2", 0600)) == 0);
+  ASSERT (symlink ("../s/2", BASE "/d/1") == 0);
+  ASSERT (symlink ("//.//../..", BASE "/droot") == 0);
+
+  /* Check that symbolic links are not resolved, with CAN_NOLINKS.  */
+  {
+    char *result1 = canonicalize_filename_mode (BASE "/huk", CAN_NOLINKS);
+    ASSERT (result1 != NULL);
+    ASSERT (strcmp (result1 + strlen (result1) - strlen ("/" BASE "/huk"),
+                    "/" BASE "/huk") == 0);
+    free (result1);
+  }
+
+  /* Check that the symbolic link to a file can be resolved.  */
+  {
+    char *result1 = canonicalize_file_name (BASE "/huk");
+    char *result2 = canonicalize_file_name (BASE "/tra");
+    char *result3 = canonicalize_filename_mode (BASE "/huk", CAN_EXISTING);
+    ASSERT (result1 != NULL);
+    ASSERT (result2 != NULL);
+    ASSERT (result3 != NULL);
+    ASSERT (strcmp (result1, result2) == 0);
+    ASSERT (strcmp (result2, result3) == 0);
+    ASSERT (strcmp (result1 + strlen (result1) - strlen ("/" BASE "/tra"),
+                    "/" BASE "/tra") == 0);
+    free (result1);
+    free (result2);
+    free (result3);
+  }
+
+  /* Check that the symbolic link to a directory can be resolved.  */
+  {
+    char *result1 = canonicalize_file_name (BASE "/plo");
+    char *result2 = canonicalize_file_name (BASE "/bef");
+    char *result3 = canonicalize_file_name (BASE "/lum");
+    char *result4 = canonicalize_filename_mode (BASE "/plo", CAN_EXISTING);
+    ASSERT (result1 != NULL);
+    ASSERT (result2 != NULL);
+    ASSERT (result3 != NULL);
+    ASSERT (result4 != NULL);
+    ASSERT (strcmp (result1, result2) == 0);
+    ASSERT (strcmp (result2, result3) == 0);
+    ASSERT (strcmp (result3, result4) == 0);
+    ASSERT (strcmp (result1 + strlen (result1) - strlen ("/" BASE "/lum"),
+                    "/" BASE "/lum") == 0);
+    free (result1);
+    free (result2);
+    free (result3);
+    free (result4);
+  }
+
+  /* Check that a symbolic link to a nonexistent file yields NULL.  */
+  {
+    char *result1;
+    char *result2;
+    errno = 0;
+    result1 = canonicalize_file_name (BASE "/ouk");
+    ASSERT (result1 == NULL);
+    ASSERT (errno == ENOENT);
+    errno = 0;
+    result2 = canonicalize_filename_mode (BASE "/ouk", CAN_EXISTING);
+    ASSERT (result2 == NULL);
+    ASSERT (errno == ENOENT);
+  }
+
+  /* Check that a non-directory symlink with trailing slash yields NULL.  */
+  {
+    char *result1;
+    char *result2;
+    errno = 0;
+    result1 = canonicalize_file_name (BASE "/huk/");
+    ASSERT (result1 == NULL);
+    ASSERT (errno == ENOTDIR);
+    errno = 0;
+    result2 = canonicalize_filename_mode (BASE "/huk/", CAN_EXISTING);
+    ASSERT (result2 == NULL);
+    ASSERT (errno == ENOTDIR);
+  }
+
+  /* Check that a missing directory via symlink yields NULL.  */
+  {
+    char *result1;
+    char *result2;
+    errno = 0;
+    result1 = canonicalize_file_name (BASE "/ouk/..");
+    ASSERT (result1 == NULL);
+    ASSERT (errno == ENOENT);
+    errno = 0;
+    result2 = canonicalize_filename_mode (BASE "/ouk/..", CAN_EXISTING);
+    ASSERT (result2 == NULL);
+    ASSERT (errno == ENOENT);
+  }
+
+  /* Check that a loop of symbolic links is detected.  */
+  {
+    char *result1;
+    char *result2;
+    errno = 0;
+    result1 = canonicalize_file_name ("ise");
+    ASSERT (result1 == NULL);
+    ASSERT (errno == ELOOP);
+    errno = 0;
+    result2 = canonicalize_filename_mode ("ise", CAN_EXISTING);
+    ASSERT (result2 == NULL);
+    ASSERT (errno == ELOOP);
+  }
+
+  /* Check that alternate modes can resolve missing basenames.  */
+  {
+    char *result1 = canonicalize_filename_mode (BASE "/zzz", CAN_ALL_BUT_LAST);
+    char *result2 = canonicalize_filename_mode (BASE "/zzz", CAN_MISSING);
+    char *result3 = canonicalize_filename_mode (BASE "/zzz/", CAN_ALL_BUT_LAST);
+    char *result4 = canonicalize_filename_mode (BASE "/zzz/", CAN_MISSING);
+    ASSERT (result1 != NULL);
+    ASSERT (result2 != NULL);
+    ASSERT (result3 != NULL);
+    ASSERT (result4 != NULL);
+    ASSERT (strcmp (result1, result2) == 0);
+    ASSERT (strcmp (result2, result3) == 0);
+    ASSERT (strcmp (result3, result4) == 0);
+    ASSERT (strcmp (result1 + strlen (result1) - strlen ("/" BASE "/zzz"),
+                    "/" BASE "/zzz") == 0);
+    free (result1);
+    free (result2);
+    free (result3);
+    free (result4);
+  }
+
+  /* Check that alternate modes can resolve broken symlink basenames.  */
+  {
+    char *result1 = canonicalize_filename_mode (BASE "/ouk", CAN_ALL_BUT_LAST);
+    char *result2 = canonicalize_filename_mode (BASE "/ouk", CAN_MISSING);
+    char *result3 = canonicalize_filename_mode (BASE "/ouk/", CAN_ALL_BUT_LAST);
+    char *result4 = canonicalize_filename_mode (BASE "/ouk/", CAN_MISSING);
+    ASSERT (result1 != NULL);
+    ASSERT (result2 != NULL);
+    ASSERT (result3 != NULL);
+    ASSERT (result4 != NULL);
+    ASSERT (strcmp (result1, result2) == 0);
+    ASSERT (strcmp (result2, result3) == 0);
+    ASSERT (strcmp (result3, result4) == 0);
+    ASSERT (strcmp (result1 + strlen (result1) - strlen ("/" BASE "/wum"),
+                    "/" BASE "/wum") == 0);
+    free (result1);
+    free (result2);
+    free (result3);
+    free (result4);
+  }
+
+  /* Check that alternate modes can handle missing dirnames.  */
+  {
+    char *result1 = canonicalize_filename_mode ("t-can.zzz/zzz", CAN_ALL_BUT_LAST);
+    char *result2 = canonicalize_filename_mode ("t-can.zzz/zzz", CAN_MISSING);
+    ASSERT (result1 == NULL);
+    ASSERT (result2 != NULL);
+    ASSERT (strcmp (result2 + strlen (result2) - 14, "/t-can.zzz/zzz") == 0);
+    free (result2);
+  }
+
+  /* Ensure that the following is resolved properly.
+     Before 2007-09-27, it would mistakenly report a loop.  */
+  {
+    char *result1 = canonicalize_filename_mode (BASE, CAN_EXISTING);
+    char *result2 = canonicalize_filename_mode (BASE "/p/1", CAN_EXISTING);
+    ASSERT (result1 != NULL);
+    ASSERT (result2 != NULL);
+    ASSERT (strcmp (result2 + strlen (result1), "/d/2") == 0);
+    free (result1);
+    free (result2);
+  }
+
+  /* Check that leading // is honored correctly.  */
+  {
+    struct stat st1;
+    struct stat st2;
+    char *result1 = canonicalize_file_name ("//.");
+    char *result2 = canonicalize_filename_mode ("//.", CAN_EXISTING);
+    char *result3 = canonicalize_file_name (BASE "/droot");
+    char *result4 = canonicalize_filename_mode (BASE "/droot", CAN_EXISTING);
+    ASSERT (result1);
+    ASSERT (result2);
+    ASSERT (result3);
+    ASSERT (result4);
+    ASSERT (stat ("/", &st1) == 0);
+    ASSERT (stat ("//", &st2) == 0);
+    if (SAME_INODE (st1, st2))
+      {
+        ASSERT (strcmp (result1, "/") == 0);
+        ASSERT (strcmp (result2, "/") == 0);
+        ASSERT (strcmp (result3, "/") == 0);
+        ASSERT (strcmp (result4, "/") == 0);
+      }
+    else
+      {
+        ASSERT (strcmp (result1, "//") == 0);
+        ASSERT (strcmp (result2, "//") == 0);
+        ASSERT (strcmp (result3, "//") == 0);
+        ASSERT (strcmp (result4, "//") == 0);
+      }
+    free (result1);
+    free (result2);
+    free (result3);
+    free (result4);
+  }
+
+  /* Cleanup.  */
+  ASSERT (remove (BASE "/droot") == 0);
+  ASSERT (remove (BASE "/d/1") == 0);
+  ASSERT (remove (BASE "/d/2") == 0);
+  ASSERT (remove (BASE "/d") == 0);
+  ASSERT (remove (BASE "/s") == 0);
+  ASSERT (remove (BASE "/p") == 0);
+  ASSERT (remove (BASE "/plo") == 0);
+  ASSERT (remove (BASE "/huk") == 0);
+  ASSERT (remove (BASE "/bef") == 0);
+  ASSERT (remove (BASE "/ouk") == 0);
+  ASSERT (remove (BASE "/ket") == 0);
+  ASSERT (remove (BASE "/lum") == 0);
+  ASSERT (remove (BASE "/tra") == 0);
+  ASSERT (remove (BASE) == 0);
+  ASSERT (remove ("ise") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-chdir.c b/gnulib-tests/test-chdir.c
new file mode 100644
index 0000000..9f0739d
--- /dev/null
+++ b/gnulib-tests/test-chdir.c
@@ -0,0 +1,33 @@
+/* Test changing to a directory.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (chdir, int, (const char *));
+
+#include "macros.h"
+
+int
+main (void)
+{
+  ASSERT (chdir ("/") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-chown.c b/gnulib-tests/test-chown.c
new file mode 100644
index 0000000..a3de19e
--- /dev/null
+++ b/gnulib-tests/test-chown.c
@@ -0,0 +1,49 @@
+/* Tests of chown.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (chown, int, (char const *, uid_t, gid_t));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+#include "mgetgroups.h"
+#include "stat-time.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-chown.t"
+
+#include "test-chown.h"
+
+int
+main (void)
+{
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_chown (chown, true);
+}
diff --git a/gnulib-tests/test-chown.h b/gnulib-tests/test-chown.h
new file mode 100644
index 0000000..eb068f0
--- /dev/null
+++ b/gnulib-tests/test-chown.h
@@ -0,0 +1,209 @@
+/* Tests of chown.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include "nap.h"
+
+#if !HAVE_GETEGID
+# define getegid() ((gid_t) -1)
+#endif
+
+/* This file is designed to test chown(n,o,g) and
+   chownat(AT_FDCWD,n,o,g,0).  FUNC is the function to test.  Assumes
+   that BASE and ASSERT are already defined, and that appropriate
+   headers are already included.  If PRINT, warn before skipping
+   symlink tests with status 77.  */
+
+static int
+test_chown (int (*func) (char const *, uid_t, gid_t), bool print)
+{
+  struct stat st1;
+  struct stat st2;
+  gid_t *gids = NULL;
+  int gids_count;
+  int result;
+
+  /* Solaris 8 is interesting - if the current process belongs to
+     multiple groups, the current directory is owned by a group that
+     the current process belongs to but different than getegid(), and
+     the current directory does not have the S_ISGID bit, then regular
+     files created in the directory belong to the directory's group,
+     but symlinks belong to the current effective group id.  If
+     S_ISGID is set, then both files and symlinks belong to the
+     directory's group.  However, it is possible to run the testsuite
+     from within a directory owned by a group we don't belong to, in
+     which case all things that we create belong to the current
+     effective gid.  So, work around the issues by creating a
+     subdirectory (we are guaranteed that the subdirectory will be
+     owned by one of our current groups), change ownership of that
+     directory to the current effective gid (which will thus succeed),
+     then create all other files within that directory (eliminating
+     questions on whether inheritance or current id triumphs, since
+     the two methods resolve to the same gid).  */
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  ASSERT (stat (BASE "dir", &st1) == 0);
+
+  /* Filter out mingw and file systems which have no concept of groups.  */
+  result = func (BASE "dir", st1.st_uid, getegid ());
+  if (result == -1 && (errno == ENOSYS || errno == EPERM))
+    {
+      ASSERT (rmdir (BASE "dir") == 0);
+      if (print)
+        fputs ("skipping test: no support for ownership\n", stderr);
+      return 77;
+    }
+  ASSERT (result == 0);
+
+  ASSERT (close (creat (BASE "dir/file", 0600)) == 0);
+  ASSERT (stat (BASE "dir/file", &st1) == 0);
+  ASSERT (st1.st_uid != (uid_t) -1);
+  ASSERT (st1.st_gid != (gid_t) -1);
+  ASSERT (st1.st_gid == getegid ());
+
+  /* Sanity check of error cases.  */
+  errno = 0;
+  ASSERT (func ("", -1, -1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("no_such", -1, -1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("no_such/", -1, -1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (BASE "dir/file/", -1, -1) == -1);
+  ASSERT (errno == ENOTDIR);
+
+  /* Check that -1 does not alter ownership.  */
+  ASSERT (func (BASE "dir/file", -1, st1.st_gid) == 0);
+  ASSERT (func (BASE "dir/file", st1.st_uid, -1) == 0);
+  ASSERT (func (BASE "dir/file", (uid_t) -1, (gid_t) -1) == 0);
+  ASSERT (stat (BASE "dir/file", &st2) == 0);
+  ASSERT (st1.st_uid == st2.st_uid);
+  ASSERT (st1.st_gid == st2.st_gid);
+
+  /* Even if the values aren't changing, ctime is required to change
+     if at least one argument is not -1.  */
+  nap ();
+  ASSERT (func (BASE "dir/file", st1.st_uid, st1.st_gid) == 0);
+  ASSERT (stat (BASE "dir/file", &st2) == 0);
+  ASSERT (st1.st_ctime < st2.st_ctime
+          || (st1.st_ctime == st2.st_ctime
+              && get_stat_ctime_ns (&st1) < get_stat_ctime_ns (&st2)));
+
+  /* Test symlink behavior.  */
+  if (symlink ("link", BASE "dir/link2"))
+    {
+      ASSERT (unlink (BASE "dir/file") == 0);
+      ASSERT (rmdir (BASE "dir") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  errno = 0;
+  ASSERT (func (BASE "dir/link2", -1, -1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (BASE "dir/link2/", st1.st_uid, st1.st_gid) == -1);
+  ASSERT (errno == ENOENT);
+  ASSERT (symlink ("file", BASE "dir/link") == 0);
+
+  /* For non-privileged users, chown can only portably succeed at
+     changing group ownership of a file we own.  If we belong to at
+     least two groups, then verifying the correct change is simple.
+     But if we belong to only one group, then we fall back on the
+     other observable effect of chown: the ctime must be updated.  */
+  gids_count = mgetgroups (NULL, st1.st_gid, &gids);
+  if (1 < gids_count)
+    {
+      ASSERT (gids[1] != st1.st_gid);
+      ASSERT (gids[1] != (gid_t) -1);
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+
+      errno = 0;
+      ASSERT (func (BASE "dir/link2/", -1, gids[1]) == -1);
+      ASSERT (errno == ENOTDIR);
+      ASSERT (stat (BASE "dir/file", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+
+      ASSERT (func (BASE "dir/link2", -1, gids[1]) == 0);
+      ASSERT (stat (BASE "dir/file", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (gids[1] == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+    }
+  else
+    {
+      struct stat l1;
+      struct stat l2;
+      ASSERT (stat (BASE "dir/file", &st1) == 0);
+      ASSERT (lstat (BASE "dir/link", &l1) == 0);
+      ASSERT (lstat (BASE "dir/link2", &l2) == 0);
+
+      nap ();
+      errno = 0;
+      ASSERT (func (BASE "dir/link2/", -1, st1.st_gid) == -1);
+      ASSERT (errno == ENOTDIR);
+      ASSERT (stat (BASE "dir/file", &st2) == 0);
+      ASSERT (st1.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&st1) == get_stat_ctime_ns (&st2));
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (l1.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&l1) == get_stat_ctime_ns (&st2));
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (l2.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&l2) == get_stat_ctime_ns (&st2));
+
+      ASSERT (func (BASE "dir/link2", -1, st1.st_gid) == 0);
+      ASSERT (stat (BASE "dir/file", &st2) == 0);
+      ASSERT (st1.st_ctime < st2.st_ctime
+              || (st1.st_ctime == st2.st_ctime
+                  && get_stat_ctime_ns (&st1) < get_stat_ctime_ns (&st2)));
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (l1.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&l1) == get_stat_ctime_ns (&st2));
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (l2.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&l2) == get_stat_ctime_ns (&st2));
+    }
+
+  /* Cleanup.  */
+  free (gids);
+  ASSERT (unlink (BASE "dir/file") == 0);
+  ASSERT (unlink (BASE "dir/link") == 0);
+  ASSERT (unlink (BASE "dir/link2") == 0);
+  ASSERT (rmdir (BASE "dir") == 0);
+  return 0;
+}
diff --git a/gnulib-tests/test-cloexec.c b/gnulib-tests/test-cloexec.c
new file mode 100644
index 0000000..7c992df
--- /dev/null
+++ b/gnulib-tests/test-cloexec.c
@@ -0,0 +1,148 @@
+/* Test duplicating non-inheritable file descriptors.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include "cloexec.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+#endif
+
+#include "binary-io.h"
+#include "macros.h"
+
+/* Return non-zero if FD is open and inheritable across exec/spawn.  */
+static int
+is_inheritable (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  DWORD flags;
+  if (h == INVALID_HANDLE_VALUE || GetHandleInformation (h, &flags) == 0)
+    return 0;
+  return (flags & HANDLE_FLAG_INHERIT) != 0;
+#else
+# ifndef F_GETFD
+#  error Please port fcntl to your platform
+# endif
+  int i = fcntl (fd, F_GETFD);
+  return 0 <= i && (i & FD_CLOEXEC) == 0;
+#endif
+}
+
+#if !O_BINARY
+# define setmode(f,m) zero ()
+static int zero (void) { return 0; }
+#endif
+
+/* Return non-zero if FD is open in the given MODE, which is either
+   O_TEXT or O_BINARY.  */
+static int
+is_mode (int fd, int mode)
+{
+  int value = setmode (fd, O_BINARY);
+  setmode (fd, value);
+  return mode == value;
+}
+
+int
+main (void)
+{
+  const char *file = "test-cloexec.tmp";
+  int fd = creat (file, 0600);
+  int fd2;
+  int bad_fd = getdtablesize ();
+
+  /* Assume std descriptors were provided by invoker.  */
+  ASSERT (STDERR_FILENO < fd);
+  ASSERT (is_inheritable (fd));
+
+  /* Normal use of set_cloexec_flag.  */
+  ASSERT (set_cloexec_flag (fd, true) == 0);
+#if !(defined _WIN32 && ! defined __CYGWIN__)
+  ASSERT (!is_inheritable (fd));
+#endif
+  ASSERT (set_cloexec_flag (fd, false) == 0);
+  ASSERT (is_inheritable (fd));
+
+  /* Normal use of dup_cloexec.  */
+  fd2 = dup_cloexec (fd);
+  ASSERT (fd < fd2);
+  ASSERT (!is_inheritable (fd2));
+  ASSERT (close (fd) == 0);
+  ASSERT (dup_cloexec (fd2) == fd);
+  ASSERT (!is_inheritable (fd));
+  ASSERT (close (fd2) == 0);
+
+  /* On systems that distinguish between text and binary mode,
+     dup_cloexec reuses the mode of the source.  */
+  setmode (fd, O_BINARY);
+  ASSERT (is_mode (fd, O_BINARY));
+  fd2 = dup_cloexec (fd);
+  ASSERT (fd < fd2);
+  ASSERT (is_mode (fd2, O_BINARY));
+  ASSERT (close (fd2) == 0);
+  setmode (fd, O_TEXT);
+  ASSERT (is_mode (fd, O_TEXT));
+  fd2 = dup_cloexec (fd);
+  ASSERT (fd < fd2);
+  ASSERT (is_mode (fd2, O_TEXT));
+  ASSERT (close (fd2) == 0);
+
+  /* Test error handling.  */
+  errno = 0;
+  ASSERT (set_cloexec_flag (-1, false) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (set_cloexec_flag (bad_fd, false) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (set_cloexec_flag (fd2, false) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (dup_cloexec (-1) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (dup_cloexec (bad_fd) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (dup_cloexec (fd2) == -1);
+  ASSERT (errno == EBADF);
+
+  /* Clean up.  */
+  ASSERT (close (fd) == 0);
+  ASSERT (unlink (file) == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-close.c b/gnulib-tests/test-close.c
new file mode 100644
index 0000000..beb7768
--- /dev/null
+++ b/gnulib-tests/test-close.c
@@ -0,0 +1,45 @@
+/* Test closing a file or socket.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (close, int, (int));
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (close (-1) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (close (99) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-closein.c b/gnulib-tests/test-closein.c
new file mode 100644
index 0000000..b7e9bdf
--- /dev/null
+++ b/gnulib-tests/test-closein.c
@@ -0,0 +1,49 @@
+/* Test of closein module.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake.  */
+
+#include <config.h>
+
+#include "closein.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "binary-io.h"
+#include "ignore-value.h"
+
+/* With no arguments, do nothing.  With arguments, attempt to consume
+   first 6 bytes of stdin.  In either case, let exit() take care of
+   closing std streams and changing exit status if ferror(stdin).  */
+int
+main (int argc, char **argv)
+{
+  char buf[7];
+  atexit (close_stdin);
+
+  /* close_stdin currently relies on ftell, but mingw ftell is
+     unreliable on text mode input.  */
+  set_binary_mode (0, O_BINARY);
+
+  if (argc > 2)
+    close (0);
+
+  if (argc > 1)
+    ignore_value (fread (buf, 1, 6, stdin));
+  return 0;
+}
diff --git a/gnulib-tests/test-closein.sh b/gnulib-tests/test-closein.sh
new file mode 100755
index 0000000..d6359f9
--- /dev/null
+++ b/gnulib-tests/test-closein.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+echo Hello world > in.tmp
+echo world > xout.tmp
+
+fail=0
+# Test with seekable stdin; follow-on process must see remaining data
+(${CHECKER} test-closein; cat) < in.tmp > out1.tmp || fail=1
+cmp out1.tmp in.tmp || fail=1
+
+(${CHECKER} test-closein consume; cat) < in.tmp > out2.tmp || fail=1
+cmp out2.tmp xout.tmp || fail=1
+
+# Test for lack of error on pipe.  Ignore any EPIPE failures from cat.
+cat in.tmp 2>/dev/null | ${CHECKER} test-closein || fail=1
+
+cat in.tmp 2>/dev/null | ${CHECKER} test-closein consume || fail=1
+
+# Test for lack of error when nothing is read
+${CHECKER} test-closein </dev/null || fail=1
+
+${CHECKER} test-closein <&- || fail=1
+
+# Test for no error when EOF is read early
+${CHECKER} test-closein consume </dev/null || fail=1
+
+# Test for error when read fails because no file available
+${CHECKER} test-closein consume close <&- 2>/dev/null && fail=1
+
+Exit $fail
diff --git a/gnulib-tests/test-connect.c b/gnulib-tests/test-connect.c
new file mode 100644
index 0000000..7f35ad1
--- /dev/null
+++ b/gnulib-tests/test-connect.c
@@ -0,0 +1,60 @@
+/* Test connecting a client socket.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/socket.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (connect, int, (int, const struct sockaddr *, socklen_t));
+
+#include <errno.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+
+#include "sockets.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  (void) gl_sockets_startup (SOCKETS_1_1);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    struct sockaddr_in addr;
+
+    addr.sin_family = AF_INET;
+    inet_pton (AF_INET, "127.0.0.1", &addr.sin_addr);
+    addr.sin_port = htons (80);
+    {
+      errno = 0;
+      ASSERT (connect (-1, (const struct sockaddr *) &addr, sizeof (addr))
+              == -1);
+      ASSERT (errno == EBADF);
+    }
+    {
+      close (99);
+      errno = 0;
+      ASSERT (connect (99, (const struct sockaddr *) &addr, sizeof (addr))
+              == -1);
+      ASSERT (errno == EBADF);
+    }
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-copy-acl-1.sh b/gnulib-tests/test-copy-acl-1.sh
new file mode 100755
index 0000000..0fe44a5
--- /dev/null
+++ b/gnulib-tests/test-copy-acl-1.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+# Test copy-acl on the file system of /var/tmp, which usually is a local
+# file system.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+
+if test -d /var/tmp; then
+  TMPDIR=/var/tmp
+else
+  TMPDIR=/tmp
+fi
+test -d $TMPDIR || Exit 77
+export TMPDIR
+
+$BOURNE_SHELL "${srcdir}/test-copy-acl.sh"
+
+Exit $?
diff --git a/gnulib-tests/test-copy-acl-2.sh b/gnulib-tests/test-copy-acl-2.sh
new file mode 100755
index 0000000..a35c12e
--- /dev/null
+++ b/gnulib-tests/test-copy-acl-2.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# Test copy-acl on the file system of the build directory, which may be
+# a local file system or NFS mounted.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+
+TMPDIR=`pwd`
+export TMPDIR
+
+$BOURNE_SHELL "${srcdir}/test-copy-acl.sh"
+
+Exit $?
diff --git a/gnulib-tests/test-copy-acl.c b/gnulib-tests/test-copy-acl.c
new file mode 100644
index 0000000..e7c5e54
--- /dev/null
+++ b/gnulib-tests/test-copy-acl.c
@@ -0,0 +1,73 @@
+/* Test of copying of files.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include "acl.h"
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  const char *file1;
+  const char *file2;
+  int fd1;
+  struct stat statbuf;
+  int mode;
+  int fd2;
+
+  ASSERT (argc == 3);
+
+  file1 = argv[1];
+  file2 = argv[2];
+
+  fd1 = open (file1, O_RDONLY);
+  if (fd1 < 0 || fstat (fd1, &statbuf) < 0)
+    {
+      fprintf (stderr, "could not open file \"%s\"\n", file1);
+      exit (EXIT_FAILURE);
+    }
+  mode = statbuf.st_mode & 07777;
+
+  fd2 = open (file2, O_WRONLY, 0600);
+  if (fd2 < 0)
+    {
+      fprintf (stderr, "could not open file \"%s\"\n", file2);
+      exit (EXIT_FAILURE);
+    }
+
+#if USE_ACL
+  if (copy_acl (file1, fd1, file2, fd2, mode))
+    exit (EXIT_FAILURE);
+#else
+  chmod (file2, mode);
+#endif
+
+  close (fd2);
+  close (fd1);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-copy-acl.sh b/gnulib-tests/test-copy-acl.sh
new file mode 100755
index 0000000..9f69d14
--- /dev/null
+++ b/gnulib-tests/test-copy-acl.sh
@@ -0,0 +1,664 @@
+#!/bin/sh
+
+# Show all commands when run with environment variable VERBOSE=yes.
+test -z "$VERBOSE" || set -x
+
+test "$USE_ACL" = 0 &&
+  {
+    echo "Skipping test: insufficient ACL support"
+    exit 77
+  }
+
+# func_tmpdir
+# creates a temporary directory.
+# Sets variable
+# - tmp             pathname of freshly created temporary directory
+func_tmpdir ()
+{
+  # Use the environment variable TMPDIR, falling back to /tmp. This allows
+  # users to specify a different temporary directory, for example, if their
+  # /tmp is filled up or too small.
+  : ${TMPDIR=/tmp}
+  {
+    # Use the mktemp program if available. If not available, hide the error
+    # message.
+    tmp=`(umask 077 && mktemp -d "$TMPDIR/glXXXXXX") 2>/dev/null` &&
+    test -n "$tmp" && test -d "$tmp"
+  } ||
+  {
+    # Use a simple mkdir command. It is guaranteed to fail if the directory
+    # already exists.  $RANDOM is bash specific and expands to empty in shells
+    # other than bash, ksh and zsh.  Its use does not increase security;
+    # rather, it minimizes the probability of failure in a very cluttered /tmp
+    # directory.
+    tmp=$TMPDIR/gl$$-$RANDOM
+    (umask 077 && mkdir "$tmp")
+  } ||
+  {
+    echo "$0: cannot create a temporary directory in $TMPDIR" >&2
+    exit 1
+  }
+}
+
+func_tmpdir
+# builddir may already be set by the script that invokes this one.
+case "$builddir" in
+  '') builddir=`pwd` ;;
+  /* | ?:*) ;;
+  *) builddir=`pwd`/$builddir ;;
+esac
+cd "$builddir" ||
+  {
+    echo "$0: cannot determine build directory (unreadable parent dir?)" >&2
+    exit 1
+  }
+# Switch to a temporary directory, to increase the likelihood that ACLs are
+# supported on the current file system. (/tmp is usually locally mounted,
+# whereas the build dir is sometimes NFS-mounted.)
+( cd "$tmp"
+
+  # Prepare tmpfile0.
+  rm -f tmpfile[0-9] tmpaclout[0-2]
+  echo "Simple contents" > tmpfile0
+  chmod 600 tmpfile0
+
+  # Classification of the platform according to the programs available for
+  # manipulating ACLs.
+  # Possible values are:
+  #   linux, cygwin, freebsd, solaris, hpux, hpuxjfs, osf1, aix, macosx, irix, none.
+  # TODO: Support also native Windows platforms (mingw).
+  acl_flavor=none
+  if (getfacl tmpfile0 >/dev/null) 2>/dev/null; then
+    # Platforms with the getfacl and setfacl programs.
+    # Linux, FreeBSD, Solaris, Cygwin.
+    if (setfacl --help >/dev/null) 2>/dev/null; then
+      # Linux, Cygwin.
+      if (LC_ALL=C setfacl --help | grep ' --set-file' >/dev/null) 2>/dev/null; then
+        # Linux.
+        acl_flavor=linux
+      else
+        acl_flavor=cygwin
+      fi
+    else
+      # FreeBSD, Solaris.
+      if (LC_ALL=C setfacl 2>&1 | grep '\-x entries' >/dev/null) 2>/dev/null; then
+        # FreeBSD.
+        acl_flavor=freebsd
+      else
+        # Solaris.
+        acl_flavor=solaris
+      fi
+    fi
+  else
+    if (lsacl / >/dev/null) 2>/dev/null; then
+      # Platforms with the lsacl and chacl programs.
+      # HP-UX, sometimes also IRIX.
+      if (getacl tmpfile0 >/dev/null) 2>/dev/null; then
+        # HP-UX 11.11 or newer.
+        acl_flavor=hpuxjfs
+      else
+        # HP-UX 11.00.
+        acl_flavor=hpux
+      fi
+    else
+      if (getacl tmpfile0 >/dev/null) 2>/dev/null; then
+        # Tru64, NonStop Kernel.
+        if (getacl -m tmpfile0 >/dev/null) 2>/dev/null; then
+          # Tru64.
+          acl_flavor=osf1
+        else
+          # NonStop Kernel.
+          acl_flavor=nsk
+        fi
+      else
+        if (aclget tmpfile0 >/dev/null) 2>/dev/null; then
+          # AIX.
+          acl_flavor=aix
+        else
+          if (fsaclctl -v >/dev/null) 2>/dev/null; then
+            # Mac OS X.
+            acl_flavor=macosx
+          else
+            if test -f /sbin/chacl; then
+              # IRIX.
+              acl_flavor=irix
+            fi
+          fi
+        fi
+      fi
+    fi
+  fi
+
+  # Define a function to test for the same ACLs, from the point of view of
+  # the programs.
+  # func_test_same_acls file1 file2
+  case $acl_flavor in
+    linux | cygwin | freebsd | solaris)
+      func_test_same_acls ()
+      {
+        getfacl "$1" | sed -e "s/$1/FILENAME/g" > tmpaclout1
+        getfacl "$2" | sed -e "s/$2/FILENAME/g" > tmpaclout2
+        cmp tmpaclout1 tmpaclout2 > /dev/null
+      }
+      ;;
+    hpux)
+      func_test_same_acls ()
+      {
+        lsacl "$1" | sed -e "s/$1/FILENAME/g" > tmpaclout1
+        lsacl "$2" | sed -e "s/$2/FILENAME/g" > tmpaclout2
+        cmp tmpaclout1 tmpaclout2 > /dev/null
+      }
+      ;;
+    hpuxjfs)
+      func_test_same_acls ()
+      {
+        { lsacl "$1" | sed -e "s/$1/FILENAME/g" > tmpaclout1
+          lsacl "$2" | sed -e "s/$2/FILENAME/g" > tmpaclout2
+          cmp tmpaclout1 tmpaclout2 > /dev/null
+        } &&
+        { getacl "$1" | sed -e "s/$1/FILENAME/g" > tmpaclout1
+          getacl "$2" | sed -e "s/$2/FILENAME/g" > tmpaclout2
+          cmp tmpaclout1 tmpaclout2 > /dev/null
+        }
+      }
+      ;;
+    osf1 | nsk)
+      func_test_same_acls ()
+      {
+        getacl "$1" | sed -e "s/$1/FILENAME/g" > tmpaclout1
+        getacl "$2" | sed -e "s/$2/FILENAME/g" > tmpaclout2
+        cmp tmpaclout1 tmpaclout2 > /dev/null
+      }
+      ;;
+    aix)
+      func_test_same_acls ()
+      {
+        aclget "$1" > tmpaclout1
+        aclget "$2" > tmpaclout2
+        cmp tmpaclout1 tmpaclout2 > /dev/null
+      }
+      ;;
+    macosx)
+      func_test_same_acls ()
+      {
+        /bin/ls -le "$1" | sed -e "s/$1/FILENAME/g" > tmpaclout1
+        /bin/ls -le "$2" | sed -e "s/$2/FILENAME/g" > tmpaclout2
+        cmp tmpaclout1 tmpaclout2 > /dev/null
+      }
+      ;;
+    irix)
+      func_test_same_acls ()
+      {
+        /bin/ls -lD "$1" | sed -e "s/$1/FILENAME/g" > tmpaclout1
+        /bin/ls -lD "$2" | sed -e "s/$2/FILENAME/g" > tmpaclout2
+        cmp tmpaclout1 tmpaclout2 > /dev/null
+      }
+      ;;
+    none)
+      func_test_same_acls ()
+      {
+        :
+      }
+      ;;
+  esac
+
+  # func_test_copy file1 file2
+  # copies file1 to file2 and verifies the permissions and ACLs are the same
+  # on both.
+  func_test_copy ()
+  {
+    echo "Simple contents" > "$2"
+    chmod 600 "$2"
+    ${CHECKER} "$builddir"/test-copy-acl${EXEEXT} "$1" "$2" || exit 1
+    ${CHECKER} "$builddir"/test-sameacls${EXEEXT} "$1" "$2" || exit 1
+    func_test_same_acls                           "$1" "$2" || exit 1
+  }
+
+  func_test_copy tmpfile0 tmpfile1
+
+  if test $acl_flavor != none; then
+    # A POSIX compliant 'id' program.
+    if test -f /usr/xpg4/bin/id; then
+      ID=/usr/xpg4/bin/id
+    else
+      ID=id
+    fi
+    # Use a user and group id different from the current one, to avoid
+    # redundant/ambiguous ACLs.
+    myuid=`$ID -u`
+    mygid=`$ID -g`
+    auid=1
+    if test "$auid" = "$myuid"; then auid=2; fi
+    agid=1
+    if test "$agid" = "$mygid"; then agid=2; fi
+
+    case $acl_flavor in
+      linux | freebsd | solaris)
+
+        # Set an ACL for a user.
+        setfacl -m user:$auid:1 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile2
+
+        # Set an ACL for a group.
+        setfacl -m group:$agid:4 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile3
+
+        # Set an ACL for other.
+        case $acl_flavor in
+          freebsd) setfacl -m other::4 tmpfile0 ;;
+          solaris) chmod o+r tmpfile0 ;;
+          *)       setfacl -m other:4 tmpfile0 ;;
+        esac
+
+        func_test_copy tmpfile0 tmpfile4
+
+        # Remove the ACL for the user.
+        case $acl_flavor in
+          linux)   setfacl -x user:$auid tmpfile0 ;;
+          freebsd) setfacl -x user:$auid:1 tmpfile0 ;;
+          *)       setfacl -d user:$auid:1 tmpfile0 ;;
+        esac
+
+        func_test_copy tmpfile0 tmpfile5
+
+        # Remove the ACL for other.
+        case $acl_flavor in
+          linux | solaris) ;; # impossible
+          freebsd) setfacl -x other::4 tmpfile0 ;;
+          *)       setfacl -d other:4 tmpfile0 ;;
+        esac
+
+        func_test_copy tmpfile0 tmpfile6
+
+        # Remove the ACL for the group.
+        case $acl_flavor in
+          linux)   setfacl -x group:$agid tmpfile0 ;;
+          freebsd) setfacl -x group:$agid:4 tmpfile0 ;;
+          *)       setfacl -d group:$agid:4 tmpfile0 ;;
+        esac
+
+        func_test_copy tmpfile0 tmpfile7
+
+        # Delete all optional ACLs.
+        case $acl_flavor in
+          linux | freebsd)
+            setfacl -m user:$auid:1 tmpfile0
+            setfacl -b tmpfile0
+            ;;
+          *)
+            setfacl -s user::6,group::0,other:0 tmpfile0 ;;
+        esac
+
+        func_test_copy tmpfile0 tmpfile8
+
+        # Copy ACLs from a file that has no ACLs.
+        echo > tmpfile9
+        chmod a+x tmpfile9
+        case $acl_flavor in
+          linux)   getfacl tmpfile9 | setfacl --set-file=- tmpfile0 ;;
+          freebsd) ;;
+          *)       getfacl tmpfile9 | setfacl -f - tmpfile0 ;;
+        esac
+        rm -f tmpfile9
+
+        func_test_copy tmpfile0 tmpfile9
+
+        ;;
+
+      cygwin)
+
+        # Set an ACL for a group.
+        setfacl -m group:0:1 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile2
+
+        # Set an ACL for other.
+        setfacl -m other:4 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile4
+
+        # Remove the ACL for the group.
+        setfacl -d group:0 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile5
+
+        # Remove the ACL for other.
+        setfacl -d other:4 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile6
+
+        # Delete all optional ACLs.
+        setfacl -s user::6,group::0,other:0 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile8
+
+        # Copy ACLs from a file that has no ACLs.
+        echo > tmpfile9
+        chmod a+x tmpfile9
+        getfacl tmpfile9 | setfacl -f - tmpfile0
+        rm -f tmpfile9
+
+        func_test_copy tmpfile0 tmpfile9
+
+        ;;
+
+      hpux)
+
+        # Set an ACL for a user.
+        orig=`lsacl tmpfile0 | sed -e 's/ tmpfile0$//'`
+        chacl -r "${orig}($auid.%,--x)" tmpfile0
+
+        func_test_copy tmpfile0 tmpfile2
+
+        # Set an ACL for a group.
+        orig=`lsacl tmpfile0 | sed -e 's/ tmpfile0$//'`
+        chacl -r "${orig}(%.$agid,r--)" tmpfile0
+
+        func_test_copy tmpfile0 tmpfile3
+
+        # Set an ACL for other.
+        orig=`lsacl tmpfile0 | sed -e 's/ tmpfile0$//'`
+        chacl -r "${orig}(%.%,r--)" tmpfile0
+
+        func_test_copy tmpfile0 tmpfile4
+
+        # Remove the ACL for the user.
+        chacl -d "($auid.%,--x)" tmpfile0
+
+        func_test_copy tmpfile0 tmpfile5
+
+        # Remove the ACL for the group.
+        chacl -d "(%.$agid,r--)" tmpfile0
+
+        func_test_copy tmpfile0 tmpfile6
+
+        # Delete all optional ACLs.
+        chacl -z tmpfile0
+
+        func_test_copy tmpfile0 tmpfile8
+
+        # Copy ACLs from a file that has no ACLs.
+        echo > tmpfile9
+        chmod a+x tmpfile9
+        orig=`lsacl tmpfile9 | sed -e 's/ tmpfile9$//'`
+        rm -f tmpfile9
+        chacl -r "${orig}" tmpfile0
+
+        func_test_copy tmpfile0 tmpfile9
+
+        ;;
+
+      hpuxjfs)
+
+        # Set an ACL for a user.
+        orig=`lsacl tmpfile0 | sed -e 's/ tmpfile0$//'`
+        chacl -r "${orig}($auid.%,--x)" tmpfile0 \
+          || setacl -m user:$auid:1 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile2
+
+        # Set an ACL for a group.
+        orig=`lsacl tmpfile0 | sed -e 's/ tmpfile0$//'`
+        chacl -r "${orig}(%.$agid,r--)" tmpfile0 \
+          || setacl -m group:$agid:4 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile3
+
+        # Set an ACL for other.
+        orig=`lsacl tmpfile0 | sed -e 's/ tmpfile0$//'`
+        chacl -r "${orig}(%.%,r--)" tmpfile0 \
+          || setacl -m other:4 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile4
+
+        # Remove the ACL for the user.
+        chacl -d "($auid.%,--x)" tmpfile0 \
+          || setacl -d user:$auid tmpfile0
+
+        func_test_copy tmpfile0 tmpfile5
+
+        # Remove the ACL for the group.
+        chacl -d "(%.$agid,r--)" tmpfile0 \
+          || setacl -d group:$agid tmpfile0
+
+        func_test_copy tmpfile0 tmpfile6
+
+        # Delete all optional ACLs.
+        chacl -z tmpfile0 \
+          || { setacl -m user:$auid:1 tmpfile0
+               setacl -s user::6,group::0,class:7,other:0 tmpfile0
+             }
+
+        func_test_copy tmpfile0 tmpfile8
+
+        # Copy ACLs from a file that has no ACLs.
+        echo > tmpfile9
+        chmod a+x tmpfile9
+        orig=`lsacl tmpfile9 | sed -e 's/ tmpfile9$//'`
+        getacl tmpfile9 > tmpaclout0
+        rm -f tmpfile9
+        chacl -r "${orig}" tmpfile0 \
+          || setacl -f tmpaclout0 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile9
+
+        ;;
+
+      osf1)
+
+        # Set an ACL for a user.
+        setacl -u user:$auid:1 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile2
+
+        # Set an ACL for a group.
+        setacl -u group:$agid:4 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile3
+
+        # Set an ACL for other.
+        setacl -u other::4 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile4
+
+        # Remove the ACL for the user.
+        setacl -x user:$auid:1 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile5
+
+        if false; then # would give an error "can't set ACL: Invalid argument"
+          # Remove the ACL for other.
+          setacl -x other::4 tmpfile0
+
+          func_test_copy tmpfile0 tmpfile6
+        fi
+
+        # Remove the ACL for the group.
+        setacl -x group:$agid:4 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile7
+
+        # Delete all optional ACLs.
+        setacl -u user:$auid:1 tmpfile0
+        setacl -b tmpfile0
+
+        func_test_copy tmpfile0 tmpfile8
+
+        # Copy ACLs from a file that has no ACLs.
+        echo > tmpfile9
+        chmod a+x tmpfile9
+        getacl tmpfile9 > tmpaclout0
+        setacl -b -U tmpaclout0 tmpfile0
+        rm -f tmpfile9
+
+        func_test_copy tmpfile0 tmpfile9
+
+        ;;
+
+      nsk)
+
+        # Set an ACL for a user.
+        setacl -m user:$auid:1 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile2
+
+        # Set an ACL for a group.
+        setacl -m group:$agid:4 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile3
+
+        # Set an ACL for other.
+        setacl -m other:4 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile4
+
+        # Remove the ACL for the user.
+        setacl -d user:$auid tmpfile0
+
+        func_test_copy tmpfile0 tmpfile5
+
+        # Remove the ACL for the group.
+        setacl -d group:$agid tmpfile0
+
+        func_test_copy tmpfile0 tmpfile6
+
+        # Delete all optional ACLs.
+        setacl -m user:$auid:1 tmpfile0
+        setacl -s user::6,group::0,class:7,other:0 tmpfile0
+
+        func_test_copy tmpfile0 tmpfile8
+
+        # Copy ACLs from a file that has no ACLs.
+        echo > tmpfile9
+        chmod a+x tmpfile9
+        getacl tmpfile9 > tmpaclout0
+        setacl -f tmpaclout0 tmpfile0
+        rm -f tmpfile9
+
+        func_test_copy tmpfile0 tmpfile9
+
+        ;;
+
+      aix)
+
+        # Set an ACL for a user.
+        { aclget tmpfile0 | sed -e 's/disabled$/enabled/'; echo "        permit --x u:$auid"; } | aclput tmpfile0
+
+        func_test_copy tmpfile0 tmpfile2
+
+        # Set an ACL for a group.
+        { aclget tmpfile0 | sed -e 's/disabled$/enabled/'; echo "        permit r-- g:$agid"; } | aclput tmpfile0
+
+        func_test_copy tmpfile0 tmpfile3
+
+        # Set an ACL for other.
+        chmod o+r tmpfile0
+
+        func_test_copy tmpfile0 tmpfile4
+
+        # Remove the ACL for the user.
+        aclget tmpfile0 | grep -v ' u:[^ ]*$' | aclput tmpfile0
+
+        func_test_copy tmpfile0 tmpfile5
+
+        # Remove the ACL for the group.
+        aclget tmpfile0 | grep -v ' g:[^ ]*$' | aclput tmpfile0
+
+        func_test_copy tmpfile0 tmpfile7
+
+        # Delete all optional ACLs.
+        aclget tmpfile0 | sed -e 's/enabled$/disabled/' | sed -e '/disabled$/q' | aclput tmpfile0
+
+        func_test_copy tmpfile0 tmpfile8
+
+        # Copy ACLs from a file that has no ACLs.
+        echo > tmpfile9
+        chmod a+x tmpfile9
+        aclget tmpfile9 | aclput tmpfile0
+        rm -f tmpfile9
+
+        func_test_copy tmpfile0 tmpfile9
+
+        ;;
+
+      macosx)
+
+        # Set an ACL for a user.
+        /bin/chmod +a "user:daemon allow execute" tmpfile0
+
+        func_test_copy tmpfile0 tmpfile2
+
+        # Set an ACL for a group.
+        /bin/chmod +a "group:daemon allow read" tmpfile0
+
+        func_test_copy tmpfile0 tmpfile3
+
+        # Set an ACL for other.
+        chmod o+r tmpfile0
+
+        func_test_copy tmpfile0 tmpfile4
+
+        # Remove the ACL for the user.
+        /bin/chmod -a "user:daemon allow execute" tmpfile0
+
+        func_test_copy tmpfile0 tmpfile5
+
+        # Remove the ACL for the group.
+        /bin/chmod -a "group:daemon allow read" tmpfile0
+
+        func_test_copy tmpfile0 tmpfile7
+
+        # Delete all optional ACLs.
+        /bin/chmod -N tmpfile0
+
+        func_test_copy tmpfile0 tmpfile8
+
+        # Copy ACLs from a file that has no ACLs.
+        echo > tmpfile9
+        chmod a+x tmpfile9
+        { /bin/ls -le tmpfile9 | sed -n -e 's/^ [0-9][0-9]*: //p'; echo; } | /bin/chmod -E tmpfile0
+        rm -f tmpfile9
+
+        func_test_copy tmpfile0 tmpfile9
+
+        ;;
+
+      irix)
+
+        # Set an ACL for a user.
+        /sbin/chacl user::rw-,group::---,other::---,user:$auid:--x tmpfile0
+
+        func_test_copy tmpfile0 tmpfile2
+
+        # Set an ACL for a group.
+        /sbin/chacl user::rw-,group::---,other::---,user:$auid:--x,group:$agid:r-- tmpfile0
+
+        func_test_copy tmpfile0 tmpfile3
+
+        # Set an ACL for other.
+        /sbin/chacl user::rw-,group::---,user:$auid:--x,group:$agid:r--,other::r-- tmpfile0
+
+        func_test_copy tmpfile0 tmpfile4
+
+        # Remove the ACL for the user.
+        /sbin/chacl user::rw-,group::---,group:$agid:r--,other::r-- tmpfile0
+
+        func_test_copy tmpfile0 tmpfile5
+
+        # Remove the ACL for the group.
+        /sbin/chacl user::rw-,group::---,other::r-- tmpfile0
+
+        func_test_copy tmpfile0 tmpfile7
+
+        ;;
+
+    esac
+  fi
+
+  rm -f tmpfile[0-9] tmpaclout[0-2]
+) || exit 1
+
+rm -rf "$tmp"
+exit 0
diff --git a/gnulib-tests/test-count-leading-zeros.c b/gnulib-tests/test-count-leading-zeros.c
new file mode 100644
index 0000000..24dff86
--- /dev/null
+++ b/gnulib-tests/test-count-leading-zeros.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2012-2020 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake.  */
+
+#include <config.h>
+
+#include "count-leading-zeros.h"
+
+#include <limits.h>
+#include <stdio.h>
+
+#include "macros.h"
+
+#define UINT_BIT (sizeof (unsigned int) * CHAR_BIT)
+#define ULONG_BIT (sizeof (unsigned long int) * CHAR_BIT)
+#define ULLONG_BIT (sizeof (unsigned long long int) * CHAR_BIT)
+
+int
+main (int argc, char *argv[])
+{
+  int i, j;
+
+#define TEST_COUNT_LEADING_ZEROS(FUNC, TYPE, BITS, MAX, ONE)     \
+  ASSERT (FUNC (0) == BITS);                                     \
+  for (i = 0; i < BITS; i++)                                     \
+    {                                                            \
+      ASSERT (FUNC (ONE << i) == BITS - i - 1);                  \
+      for (j = 0; j < i; j++)                                    \
+        ASSERT (FUNC ((ONE << i) | (ONE << j)) == BITS - i - 1); \
+    }                                                            \
+  for (i = 0; i < 1000; i++)                                     \
+    {                                                            \
+      /* RAND_MAX is most often 0x7fff or 0x7fffffff.  */        \
+      TYPE value =                                               \
+        (RAND_MAX <= 0xffff                                      \
+         ? ((TYPE) rand () >> 3)                                 \
+           ^ (((TYPE) rand () >> 3) << 12)                       \
+           ^ (((TYPE) rand () >> 3) << 24)                       \
+           ^ (((TYPE) rand () >> 3) << 30 << 6)                  \
+           ^ (((TYPE) rand () >> 3) << 30 << 18)                 \
+           ^ (((TYPE) rand () >> 3) << 30 << 30)                 \
+         : ((TYPE) rand () >> 3)                                 \
+           ^ (((TYPE) rand () >> 3) << 22)                       \
+           ^ (((TYPE) rand () >> 3) << 22 << 22));               \
+      int count = 0;                                             \
+      for (j = 0; j < BITS; j++)                                 \
+        if (value & (ONE << j))                                  \
+          count = BITS - j - 1;                                  \
+      ASSERT (count == FUNC (value));                            \
+    }                                                            \
+  ASSERT (FUNC (MAX) == 0);
+
+  TEST_COUNT_LEADING_ZEROS (count_leading_zeros, unsigned int,
+                            UINT_BIT, UINT_MAX, 1U);
+  TEST_COUNT_LEADING_ZEROS (count_leading_zeros_l, unsigned long int,
+                            ULONG_BIT, ULONG_MAX, 1UL);
+  TEST_COUNT_LEADING_ZEROS (count_leading_zeros_ll, unsigned long long int,
+                            ULLONG_BIT, ULLONG_MAX, 1ULL);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-ctype.c b/gnulib-tests/test-ctype.c
new file mode 100644
index 0000000..9fc1965
--- /dev/null
+++ b/gnulib-tests/test-ctype.c
@@ -0,0 +1,27 @@
+/* Test of <ctype.h> substitute.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <ctype.h>
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-di-set.c b/gnulib-tests/test-di-set.c
new file mode 100644
index 0000000..869d053
--- /dev/null
+++ b/gnulib-tests/test-di-set.c
@@ -0,0 +1,56 @@
+/* Test the di-set module.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <config.h>
+
+#include "di-set.h"
+
+#include "macros.h"
+
+int
+main (void)
+{
+  struct di_set *dis = di_set_alloc ();
+  ASSERT (dis);
+  di_set_free (dis); /* free with dis->ino_map still being NULL */
+  dis = di_set_alloc ();
+  ASSERT (dis);
+
+  ASSERT (di_set_lookup (dis, 2, 5) == 0); /* initial lookup fails */
+  ASSERT (di_set_insert (dis, 2, 5) == 1); /* first insertion succeeds */
+  ASSERT (di_set_insert (dis, 2, 5) == 0); /* duplicate fails */
+  ASSERT (di_set_insert (dis, 3, 5) == 1); /* diff dev, duplicate inode is ok */
+  ASSERT (di_set_insert (dis, 2, 8) == 1); /* same dev, different inode is ok */
+  ASSERT (di_set_lookup (dis, 2, 5) == 1); /* now, the lookup succeeds */
+
+  /* very large (or negative) inode number */
+  ASSERT (di_set_insert (dis, 5, (ino_t) -1) == 1);
+  ASSERT (di_set_insert (dis, 5, (ino_t) -1) == 0); /* dup */
+
+  {
+    unsigned int i;
+    for (i = 0; i < 3000; i++)
+      ASSERT (di_set_insert (dis, 9, i) == 1);
+    for (i = 0; i < 3000; i++)
+      ASSERT (di_set_insert (dis, 9, i) == 0); /* duplicate fails */
+  }
+
+  di_set_free (dis);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-digest.h b/gnulib-tests/test-digest.h
new file mode 100644
index 0000000..07ee194
--- /dev/null
+++ b/gnulib-tests/test-digest.h
@@ -0,0 +1,144 @@
+/* Test of message digests.
+   Copyright (C) 2018-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+static void
+test_digest_on_files (int (*streamfunc) (FILE *, void *),
+                      const char *streamfunc_name,
+                      size_t digest_size,
+                      const void *expected_for_empty_file,
+                      const void *expected_for_small_file,
+                      const void *expected_for_large_file)
+{
+  int pass;
+  unlink (TESTFILE);
+
+  for (pass = 0; pass < 5; pass++)
+    {
+      {
+        FILE *fp = fopen (TESTFILE, "wb");
+        if (fp == NULL)
+          {
+            fprintf (stderr, "Could not create file %s.\n", TESTFILE);
+            exit (1);
+          }
+        switch (pass)
+          {
+          case 0:
+            /* Nothing to do for the empty file.  */
+            break;
+          case 2:
+            /* Fill the small file, with some header that will be skipped.  */
+            fputs ("ABCD", fp);
+            FALLTHROUGH;
+          case 1:
+            /* Fill the small file.  */
+            fputs ("The quick brown fox jumps over the lazy dog.\n", fp);
+            break;
+          case 4:
+            /* Fill the large file, with some header that will be skipped.  */
+            fputs ("ABCD", fp);
+            FALLTHROUGH;
+          case 3:
+            /* Fill the large file (8 MiB).  */
+            {
+              unsigned int i;
+              for (i = 0; i < 0x400000; i++)
+                {
+                  unsigned char c[2];
+                  unsigned int j = i * (i-1) * (i-5);
+                  c[0] = (unsigned char)(j >> 6);
+                  c[1] = (i % 499) + (i % 101);
+                  fwrite (c, 1, 2, fp);
+                }
+            }
+            break;
+          }
+        if (ferror (fp))
+          {
+            fprintf (stderr, "Could not write data to file %s.\n", TESTFILE);
+            exit (1);
+          }
+        fclose (fp);
+      }
+      {
+        /* Test an unaligned digest.  */
+        char *digest = (char *) malloc (digest_size + 1) + 1;
+        const void *expected;
+        FILE *fp;
+        int ret;
+
+        switch (pass)
+          {
+          case 0:         expected = expected_for_empty_file; break;
+          case 1: case 2: expected = expected_for_small_file; break;
+          case 3: case 4: expected = expected_for_large_file; break;
+          default: abort ();
+          }
+
+        fp = fopen (TESTFILE, "rb");
+        if (fp == NULL)
+          {
+            fprintf (stderr, "Could not open file %s.\n", TESTFILE);
+            exit (1);
+          }
+        switch (pass)
+          {
+          case 2:
+          case 4:
+            {
+              char header[4];
+              if (fread (header, 1, sizeof (header), fp) != sizeof (header))
+                {
+                  fprintf (stderr, "Could not read the header of %s.\n",
+                           TESTFILE);
+                  exit (1);
+                }
+            }
+            break;
+          }
+        ret = streamfunc (fp, digest);
+        if (ret)
+          {
+            fprintf (stderr, "%s failed with error %d\n", streamfunc_name, -ret);
+            exit (1);
+          }
+        if (memcmp (digest, expected, digest_size) != 0)
+          {
+            size_t i;
+            fprintf (stderr, "%s produced wrong result.\n", streamfunc_name);
+            fprintf (stderr, "Expected: ");
+            for (i = 0; i < digest_size; i++)
+              fprintf (stderr, "\\x%02x", ((const unsigned char *) expected)[i]);
+            fprintf (stderr, "\n");
+            fprintf (stderr, "Got:      ");
+            for (i = 0; i < digest_size; i++)
+              fprintf (stderr, "\\x%02x", ((const unsigned char *) digest)[i]);
+            fprintf (stderr, "\n");
+            exit (1);
+          }
+        /* Verify that fp is now positioned at end of file.  */
+        if (getc (fp) != EOF)
+          {
+            fprintf (stderr, "%s left the stream not at EOF\n", streamfunc_name);
+            exit (1);
+          }
+        fclose (fp);
+        free (digest - 1);
+      }
+    }
+
+  unlink (TESTFILE);
+}
diff --git a/gnulib-tests/test-dirent-safer.c b/gnulib-tests/test-dirent-safer.c
new file mode 100644
index 0000000..d0d703d
--- /dev/null
+++ b/gnulib-tests/test-dirent-safer.c
@@ -0,0 +1,94 @@
+/* Test that directory streams leave standard fds alone.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include "dirent--.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+/* This test intentionally closes stderr.  So, we arrange to have fd 10
+   (outside the range of interesting fd's during the test) set up to
+   duplicate the original stderr.  */
+
+#define BACKUP_STDERR_FILENO 10
+#define ASSERT_STREAM myerr
+#include "macros.h"
+
+static FILE *myerr;
+
+int
+main (void)
+{
+  int i;
+  DIR *dp;
+  /* The dirent-safer module works without the use of fdopendir (which
+     would also pull in fchdir and openat); but if those modules were
+     also used, we ensure that they are safe.  In particular, the
+     gnulib version of fdopendir is unable to guarantee that
+     dirfd(fdopendir(fd))==fd, but we can at least guarantee that if
+     they are not equal, the fd returned by dirfd is safe.  */
+#if HAVE_FDOPENDIR || GNULIB_TEST_FDOPENDIR
+  int dfd;
+#endif
+
+  /* We close fd 2 later, so save it in fd 10.  */
+  if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO
+      || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL)
+    return 2;
+
+#if HAVE_FDOPENDIR || GNULIB_TEST_FDOPENDIR
+  dfd = open (".", O_RDONLY);
+  ASSERT (STDERR_FILENO < dfd);
+#endif
+
+  /* Four iterations, with progressively more standard descriptors
+     closed.  */
+  for (i = -1; i <= STDERR_FILENO; i++)
+    {
+      if (0 <= i)
+        ASSERT (close (i) == 0);
+      dp = opendir (".");
+      ASSERT (dp);
+      ASSERT (dirfd (dp) == -1 || STDERR_FILENO < dirfd (dp));
+      ASSERT (closedir (dp) == 0);
+
+#if HAVE_FDOPENDIR || GNULIB_TEST_FDOPENDIR
+      {
+        int fd = fcntl (dfd, F_DUPFD_CLOEXEC, STDERR_FILENO + 1);
+        ASSERT (STDERR_FILENO < fd);
+        dp = fdopendir (fd);
+        ASSERT (dp);
+        ASSERT (dirfd (dp) == -1 || STDERR_FILENO < dirfd (dp));
+        ASSERT (closedir (dp) == 0);
+        errno = 0;
+        ASSERT (close (fd) == -1);
+        ASSERT (errno == EBADF);
+      }
+#endif
+    }
+
+#if HAVE_FDOPENDIR || GNULIB_TEST_FDOPENDIR
+  ASSERT (close (dfd) == 0);
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-dirent.c b/gnulib-tests/test-dirent.c
new file mode 100644
index 0000000..f451322
--- /dev/null
+++ b/gnulib-tests/test-dirent.c
@@ -0,0 +1,32 @@
+/* Test of <dirent.h> substitute.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <dirent.h>
+
+/* Check for existence of required types.  */
+static DIR *dir _GL_UNUSED;
+static struct dirent d;
+static ino_t i;
+
+int
+main (void)
+{
+  return d.d_name[0] + i;
+}
diff --git a/gnulib-tests/test-dirname.c b/gnulib-tests/test-dirname.c
new file mode 100644
index 0000000..3381f48
--- /dev/null
+++ b/gnulib-tests/test-dirname.c
@@ -0,0 +1,193 @@
+/* Test the gnulib dirname module.
+   Copyright (C) 2005-2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "dirname.h"
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct test {
+  const char *name;     /* Name under test.  */
+  const char *dir;      /* dir_name (name).  */
+  const char *last;     /* last_component (name).  */
+  const char *base;     /* base_name (name).  */
+  const char *stripped; /* name after strip_trailing_slashes (name).  */
+  bool modified;        /* result of strip_trailing_slashes (name).  */
+  bool absolute;        /* IS_ABSOLUTE_FILE_NAME (name).  */
+};
+
+static struct test tests[] = {
+  {"d/f",       "d",    "f",    "f",    "d/f",  false,  false},
+  {"/d/f",      "/d",   "f",    "f",    "/d/f", false,  true},
+  {"d/f/",      "d",    "f/",   "f/",   "d/f",  true,   false},
+  {"d/f//",     "d",    "f//",  "f/",   "d/f",  true,   false},
+  {"f",         ".",    "f",    "f",    "f",    false,  false},
+  {"/",         "/",    "",     "/",    "/",    false,  true},
+#if DOUBLE_SLASH_IS_DISTINCT_ROOT
+  {"//",        "//",   "",     "//",   "//",   false,  true},
+  {"//d",       "//",   "d",    "d",    "//d",  false,  true},
+#else
+  {"//",        "/",    "",     "/",    "/",    true,   true},
+  {"//d",       "/",    "d",    "d",    "//d",  false,  true},
+#endif
+  {"///",       "/",    "",     "/",    "/",    true,   true},
+  {"///a///",   "/",    "a///", "a/",   "///a", true,   true},
+  /* POSIX requires dirname("") and basename("") to both return ".",
+     but dir_name and base_name are defined differently.  */
+  {"",          ".",    "",     "",     "",     false,  false},
+  {".",         ".",    ".",    ".",    ".",    false,  false},
+  {"..",        ".",    "..",   "..",   "..",   false,  false},
+#if ISSLASH ('\\')
+  {"a\\",       ".",    "a\\",  "a\\",  "a",    true,   false},
+  {"a\\b",      "a",    "b",    "b",    "a\\b", false,  false},
+  {"\\",        "\\",   "",     "\\",   "\\",   false,  true},
+  {"\\/\\",     "\\",   "",     "\\",   "\\",   true,   true},
+  {"\\\\/",     "\\",   "",     "\\",   "\\",   true,   true},
+  {"\\//",      "\\",   "",     "\\",   "\\",   true,   true},
+  {"//\\",      "/",    "",     "/",    "/",    true,   true},
+#else
+  {"a\\",       ".",    "a\\",  "a\\",  "a\\",  false,  false},
+  {"a\\b",      ".",    "a\\b", "a\\b", "a\\b", false,  false},
+  {"\\",        ".",    "\\",   "\\",   "\\",   false,  false},
+  {"\\/\\",     "\\",   "\\",   "\\",   "\\/\\",false,  false},
+  {"\\\\/",     ".",    "\\\\/","\\\\/","\\\\", true,   false},
+  {"\\//",      ".",    "\\//", "\\/",  "\\",   true,   false},
+# if DOUBLE_SLASH_IS_DISTINCT_ROOT
+  {"//\\",      "//",   "\\",   "\\",   "//\\", false,  true},
+# else
+  {"//\\",      "/",    "\\",   "\\",   "//\\", false,  true},
+# endif
+#endif
+#if ISSLASH ('\\')
+# if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
+  {"c:",        "c:",   "",     "c:",   "c:",   false,  false},
+  {"c:/",       "c:/",  "",     "c:/",  "c:/",  false,  true},
+  {"c://",      "c:/",  "",     "c:/",  "c:/",  true,   true},
+  {"c:/d",      "c:/",  "d",    "d",    "c:/d", false,  true},
+  {"c://d",     "c:/",  "d",    "d",    "c://d",false,  true},
+  {"c:/d/",     "c:/",  "d/",   "d/",   "c:/d", true,   true},
+  {"c:/d/f",    "c:/d", "f",    "f",    "c:/d/f",false, true},
+  {"c:d",       "c:.",  "d",    "d",    "c:d",  false,  false},
+  {"c:d/",      "c:.",  "d/",   "d/",   "c:d",  true,   false},
+  {"c:d/f",     "c:d",  "f",    "f",    "c:d/f",false,  false},
+  {"a:b:c",     "a:.",  "b:c",  "./b:c","a:b:c",false,  false},
+  {"a/b:c",     "a",    "b:c",  "./b:c","a/b:c",false,  false},
+  {"a/b:c/",    "a",    "b:c/", "./b:c/","a/b:c",true,  false},
+# else /* ! FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE */
+  {"c:",        "c:",   "",     "c:",   "c:",   false,  true},
+  {"c:/",       "c:",   "",     "c:",   "c:",   true,   true},
+  {"c://",      "c:",   "",     "c:",   "c:",   true,   true},
+  {"c:/d",      "c:",   "d",    "d",    "c:/d", false,  true},
+  {"c://d",     "c:",   "d",    "d",    "c://d",false,  true},
+  {"c:/d/",     "c:",   "d/",   "d/",   "c:/d", true,   true},
+  {"c:/d/f",    "c:/d", "f",    "f",    "c:/d/f",false, true},
+  {"c:d",       "c:",   "d",    "d",    "c:d",  false,  true},
+  {"c:d/",      "c:",   "d/",   "d/",   "c:d",  true,   true},
+  {"c:d/f",     "c:d",  "f",    "f",    "c:d/f",false,  true},
+  {"a:b:c",     "a:",   "b:c",  "./b:c","a:b:c",false,  true},
+  {"a/b:c",     "a",    "b:c",  "./b:c","a/b:c",false,  false},
+  {"a/b:c/",    "a",    "b:c/", "./b:c/","a/b:c",true,  false},
+# endif
+#else /* ! ISSLASH ('\\') */
+  {"c:",        ".",    "c:",   "c:",   "c:",   false,  false},
+  {"c:/",       ".",    "c:/",  "c:/",  "c:",   true,   false},
+  {"c://",      ".",    "c://", "c:/",  "c:",   true,   false},
+  {"c:/d",      "c:",   "d",    "d",    "c:/d", false,  false},
+  {"c://d",     "c:",   "d",    "d",    "c://d",false,  false},
+  {"c:/d/",     "c:",   "d/",   "d/",   "c:/d", true,   false},
+  {"c:/d/f",    "c:/d", "f",    "f",    "c:/d/f",false, false},
+  {"c:d",       ".",    "c:d",  "c:d",  "c:d",  false,  false},
+  {"c:d/",      ".",    "c:d/", "c:d/", "c:d",  true,   false},
+  {"c:d/f",     "c:d",  "f",    "f",    "c:d/f",false,  false},
+  {"a:b:c",     ".",    "a:b:c","a:b:c","a:b:c",false,  false},
+  {"a/b:c",     "a",    "b:c",  "b:c",  "a/b:c",false,  false},
+  {"a/b:c/",    "a",    "b:c/", "b:c/", "a/b:c",true,   false},
+#endif
+  {"1:",        ".",    "1:",   "1:",   "1:",   false,  false},
+  {"1:/",       ".",    "1:/",  "1:/",  "1:",   true,   false},
+  {"/:",        "/",    ":",    ":",    "/:",   false,  true},
+  {"/:/",       "/",    ":/",   ":/",   "/:",   true,   true},
+  /* End sentinel.  */
+  {NULL,        NULL,   NULL,   NULL,   NULL,   false,  false}
+};
+
+int
+main (void)
+{
+  struct test *t;
+  bool ok = true;
+
+  for (t = tests; t->name; t++)
+    {
+      char *dir = dir_name (t->name);
+      int dirlen = dir_len (t->name);
+      char *last = last_component (t->name);
+      char *base = base_name (t->name);
+      int baselen = base_len (base);
+      char *stripped = strdup (t->name);
+      bool modified = strip_trailing_slashes (stripped);
+      bool absolute = IS_ABSOLUTE_FILE_NAME (t->name);
+      if (! (strcmp (dir, t->dir) == 0
+             && (dirlen == strlen (dir)
+                 || (dirlen + 1 == strlen (dir) && dir[dirlen] == '.'))))
+        {
+          ok = false;
+          printf ("dir_name '%s': got '%s' len %d,"
+                  " expected '%s' len %lu\n",
+                  t->name, dir, dirlen,
+                  t->dir, (unsigned long) strlen (t->dir));
+        }
+      if (strcmp (last, t->last))
+        {
+          ok = false;
+          printf ("last_component '%s': got '%s', expected '%s'\n",
+                  t->name, last, t->last);
+        }
+      if (! (strcmp (base, t->base) == 0
+             && (baselen == strlen (base)
+                 || (baselen + 1 == strlen (base)
+                     && ISSLASH (base[baselen])))))
+        {
+          ok = false;
+          printf ("base_name '%s': got '%s' len %d,"
+                  " expected '%s' len %lu\n",
+                  t->name, base, baselen,
+                  t->base, (unsigned long) strlen (t->base));
+        }
+      if (strcmp (stripped, t->stripped) || modified != t->modified)
+        {
+          ok = false;
+          printf ("strip_trailing_slashes '%s': got %s %s, expected %s %s\n",
+                  t->name, stripped, modified ? "changed" : "unchanged",
+                  t->stripped, t->modified ? "changed" : "unchanged");
+        }
+      if (t->absolute != absolute)
+        {
+          ok = false;
+          printf ("'%s': got %s, expected %s\n", t->name,
+                  absolute ? "absolute" : "relative",
+                  t->absolute ? "absolute" : "relative");
+        }
+      free (dir);
+      free (base);
+      free (stripped);
+    }
+  return ok ? 0 : 1;
+}
diff --git a/gnulib-tests/test-dup-safer.c b/gnulib-tests/test-dup-safer.c
new file mode 100644
index 0000000..0635541
--- /dev/null
+++ b/gnulib-tests/test-dup-safer.c
@@ -0,0 +1,180 @@
+/* Test that dup_safer leaves standard fds alone.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include "unistd--.h"
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "binary-io.h"
+#include "cloexec.h"
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+#endif
+
+#if !O_BINARY
+# define setmode(f,m) zero ()
+static int zero (void) { return 0; }
+#endif
+
+/* This test intentionally closes stderr.  So, we arrange to have fd 10
+   (outside the range of interesting fd's during the test) set up to
+   duplicate the original stderr.  */
+
+#define BACKUP_STDERR_FILENO 10
+#define ASSERT_STREAM myerr
+#include "macros.h"
+
+static FILE *myerr;
+
+/* Return true if FD is open.  */
+static bool
+is_open (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
+#else
+# ifndef F_GETFL
+#  error Please port fcntl to your platform
+# endif
+  return 0 <= fcntl (fd, F_GETFL);
+#endif
+}
+
+/* Return true if FD is open and inheritable across exec/spawn.  */
+static bool
+is_inheritable (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  DWORD flags;
+  if (h == INVALID_HANDLE_VALUE || GetHandleInformation (h, &flags) == 0)
+    return 0;
+  return (flags & HANDLE_FLAG_INHERIT) != 0;
+#else
+# ifndef F_GETFD
+#  error Please port fcntl to your platform
+# endif
+  int i = fcntl (fd, F_GETFD);
+  return 0 <= i && (i & FD_CLOEXEC) == 0;
+#endif
+}
+
+/* Return true if FD is open in the given MODE, which is either
+   O_TEXT or O_BINARY.  */
+static bool
+is_mode (int fd, int mode)
+{
+  int value = setmode (fd, O_BINARY);
+  setmode (fd, value);
+  return mode == value;
+}
+
+#define witness "test-dup-safer.txt"
+
+int
+main (void)
+{
+  int i;
+  int fd;
+  int bad_fd = getdtablesize ();
+
+  /* We close fd 2 later, so save it in fd 10.  */
+  if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO
+      || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL)
+    return 2;
+
+  /* Create file for later checks.  */
+  fd = creat (witness, 0600);
+  ASSERT (STDERR_FILENO < fd);
+
+  /* Four iterations, with progressively more standard descriptors
+     closed.  */
+  for (i = -1; i <= STDERR_FILENO; i++)
+    {
+      if (0 <= i)
+        ASSERT (close (i) == 0);
+
+      /* Detect errors.  */
+      errno = 0;
+      ASSERT (dup (-1) == -1);
+      ASSERT (errno == EBADF);
+      errno = 0;
+      ASSERT (dup (bad_fd) == -1);
+      ASSERT (errno == EBADF);
+      close (fd + 1);
+      errno = 0;
+      ASSERT (dup (fd + 1) == -1);
+      ASSERT (errno == EBADF);
+
+      /* Preserve text vs. binary.  */
+      setmode (fd, O_BINARY);
+      ASSERT (dup (fd) == fd + 1);
+      ASSERT (is_open (fd + 1));
+      ASSERT (is_inheritable (fd + 1));
+      ASSERT (is_mode (fd + 1, O_BINARY));
+
+      ASSERT (close (fd + 1) == 0);
+      setmode (fd, O_TEXT);
+      ASSERT (dup (fd) == fd + 1);
+      ASSERT (is_open (fd + 1));
+      ASSERT (is_inheritable (fd + 1));
+      ASSERT (is_mode (fd + 1, O_TEXT));
+
+      /* Create cloexec copy.  */
+      ASSERT (close (fd + 1) == 0);
+      ASSERT (fd_safer_flag (dup_cloexec (fd), O_CLOEXEC) == fd + 1);
+      ASSERT (set_cloexec_flag (fd + 1, true) == 0);
+      ASSERT (is_open (fd + 1));
+      ASSERT (!is_inheritable (fd + 1));
+      ASSERT (close (fd) == 0);
+
+      /* dup always creates inheritable copies.  Also, check that
+         earliest slot past std fds is used.  */
+      ASSERT (dup (fd + 1) == fd);
+      ASSERT (is_open (fd));
+      ASSERT (is_inheritable (fd));
+      ASSERT (close (fd + 1) == 0);
+    }
+
+  /* Cleanup.  */
+  ASSERT (close (fd) == 0);
+  ASSERT (unlink (witness) == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-dup.c b/gnulib-tests/test-dup.c
new file mode 100644
index 0000000..fdcaf39
--- /dev/null
+++ b/gnulib-tests/test-dup.c
@@ -0,0 +1,45 @@
+/* Test duplicating a file descriptor.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (dup, int, (int));
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (dup (-1) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (dup (99) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-dup2.c b/gnulib-tests/test-dup2.c
new file mode 100644
index 0000000..7f7b1c4
--- /dev/null
+++ b/gnulib-tests/test-dup2.c
@@ -0,0 +1,222 @@
+/* Test duplicating file descriptors.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (dup2, int, (int, int));
+
+#include <errno.h>
+#include <fcntl.h>
+
+#if HAVE_SYS_RESOURCE_H
+# include <sys/resource.h>
+#endif
+
+#include "binary-io.h"
+
+#if GNULIB_TEST_CLOEXEC
+# include "cloexec.h"
+#endif
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+#endif
+
+#include "macros.h"
+
+/* Return non-zero if FD is open.  */
+static int
+is_open (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
+#else
+# ifndef F_GETFL
+#  error Please port fcntl to your platform
+# endif
+  return 0 <= fcntl (fd, F_GETFL);
+#endif
+}
+
+#if GNULIB_TEST_CLOEXEC
+/* Return non-zero if FD is open and inheritable across exec/spawn.  */
+static int
+is_inheritable (int fd)
+{
+# if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  DWORD flags;
+  if (h == INVALID_HANDLE_VALUE || GetHandleInformation (h, &flags) == 0)
+    return 0;
+  return (flags & HANDLE_FLAG_INHERIT) != 0;
+# else
+#  ifndef F_GETFD
+#   error Please port fcntl to your platform
+#  endif
+  int i = fcntl (fd, F_GETFD);
+  return 0 <= i && (i & FD_CLOEXEC) == 0;
+# endif
+}
+#endif /* GNULIB_TEST_CLOEXEC */
+
+#if !O_BINARY
+# define setmode(f,m) zero ()
+static int zero (void) { return 0; }
+#endif
+
+/* Return non-zero if FD is open in the given MODE, which is either
+   O_TEXT or O_BINARY.  */
+static int
+is_mode (int fd, int mode)
+{
+  int value = setmode (fd, O_BINARY);
+  setmode (fd, value);
+  return mode == value;
+}
+
+int
+main (void)
+{
+  const char *file = "test-dup2.tmp";
+  char buffer[1];
+  int bad_fd = getdtablesize ();
+  int fd = open (file, O_CREAT | O_TRUNC | O_RDWR, 0600);
+
+  /* Assume std descriptors were provided by invoker.  */
+  ASSERT (STDERR_FILENO < fd);
+  ASSERT (is_open (fd));
+  /* Ignore any other fd's leaked into this process.  */
+  close (fd + 1);
+  close (fd + 2);
+  ASSERT (!is_open (fd + 1));
+  ASSERT (!is_open (fd + 2));
+
+  /* Assigning to self must be a no-op.  */
+  ASSERT (dup2 (fd, fd) == fd);
+  ASSERT (is_open (fd));
+
+  /* The source must be valid.  */
+  errno = 0;
+  ASSERT (dup2 (-1, fd) == -1);
+  ASSERT (errno == EBADF);
+  close (99);
+  errno = 0;
+  ASSERT (dup2 (99, fd) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (dup2 (AT_FDCWD, fd) == -1);
+  ASSERT (errno == EBADF);
+  ASSERT (is_open (fd));
+
+  /* If the source is not open, then the destination is unaffected.  */
+  errno = 0;
+  ASSERT (dup2 (fd + 1, fd + 1) == -1);
+  ASSERT (errno == EBADF);
+  ASSERT (!is_open (fd + 1));
+  errno = 0;
+  ASSERT (dup2 (fd + 1, fd) == -1);
+  ASSERT (errno == EBADF);
+  ASSERT (is_open (fd));
+
+  /* The destination must be valid.  */
+  errno = 0;
+  ASSERT (dup2 (fd, -2) == -1);
+  ASSERT (errno == EBADF);
+  if (bad_fd > 256)
+    {
+      ASSERT (dup2 (fd, 255) == 255);
+      ASSERT (dup2 (fd, 256) == 256);
+      ASSERT (close (255) == 0);
+      ASSERT (close (256) == 0);
+    }
+  ASSERT (dup2 (fd, bad_fd - 1) == bad_fd - 1);
+  ASSERT (close (bad_fd - 1) == 0);
+  errno = 0;
+  ASSERT (dup2 (fd, bad_fd) == -1);
+  ASSERT (errno == EBADF);
+
+  /* Using dup2 can skip fds.  */
+  ASSERT (dup2 (fd, fd + 2) == fd + 2);
+  ASSERT (is_open (fd));
+  ASSERT (!is_open (fd + 1));
+  ASSERT (is_open (fd + 2));
+
+  /* Verify that dup2 closes the previous occupant of a fd.  */
+  ASSERT (open ("/dev/null", O_WRONLY, 0600) == fd + 1);
+  ASSERT (dup2 (fd + 1, fd) == fd);
+  ASSERT (close (fd + 1) == 0);
+  ASSERT (write (fd, "1", 1) == 1);
+  ASSERT (dup2 (fd + 2, fd) == fd);
+  ASSERT (lseek (fd, 0, SEEK_END) == 0);
+  ASSERT (write (fd + 2, "2", 1) == 1);
+  ASSERT (lseek (fd, 0, SEEK_SET) == 0);
+  ASSERT (read (fd, buffer, 1) == 1);
+  ASSERT (*buffer == '2');
+
+#if GNULIB_TEST_CLOEXEC
+  /* Any new fd created by dup2 must not be cloexec.  */
+  ASSERT (close (fd + 2) == 0);
+  ASSERT (dup_cloexec (fd) == fd + 1);
+  ASSERT (!is_inheritable (fd + 1));
+  ASSERT (dup2 (fd + 1, fd + 1) == fd + 1);
+  ASSERT (!is_inheritable (fd + 1));
+  ASSERT (dup2 (fd + 1, fd + 2) == fd + 2);
+  ASSERT (!is_inheritable (fd + 1));
+  ASSERT (is_inheritable (fd + 2));
+  errno = 0;
+  ASSERT (dup2 (fd + 1, -1) == -1);
+  ASSERT (errno == EBADF);
+  ASSERT (!is_inheritable (fd + 1));
+#endif
+
+  /* On systems that distinguish between text and binary mode, dup2
+     reuses the mode of the source.  */
+  setmode (fd, O_BINARY);
+  ASSERT (is_mode (fd, O_BINARY));
+  ASSERT (dup2 (fd, fd + 1) == fd + 1);
+  ASSERT (is_mode (fd + 1, O_BINARY));
+  setmode (fd, O_TEXT);
+  ASSERT (is_mode (fd, O_TEXT));
+  ASSERT (dup2 (fd, fd + 1) == fd + 1);
+  ASSERT (is_mode (fd + 1, O_TEXT));
+
+  /* Clean up.  */
+  ASSERT (close (fd + 2) == 0);
+  ASSERT (close (fd + 1) == 0);
+  ASSERT (close (fd) == 0);
+  ASSERT (unlink (file) == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-environ.c b/gnulib-tests/test-environ.c
new file mode 100644
index 0000000..55ccd5d
--- /dev/null
+++ b/gnulib-tests/test-environ.c
@@ -0,0 +1,44 @@
+/* Test of environ variable.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include <string.h>
+
+int
+main ()
+{
+  /* The environment variables that are set even in the weirdest situations
+     are HOME and PATH.
+     POSIX says that HOME is initialized by the system, and that PATH may be
+     unset.  But in practice it's more frequent to see HOME unset and PATH
+     set.  So we test the presence of PATH.  */
+  char **remaining_variables = environ;
+  char *string;
+
+  for (; (string = *remaining_variables) != NULL; remaining_variables++)
+    {
+      if (strncmp (string, "PATH=", 5) == 0)
+        /* Found the PATH environment variable.  */
+        return 0;
+    }
+  /* Failed to find the PATH environment variable.  */
+  return 1;
+}
diff --git a/gnulib-tests/test-errno.c b/gnulib-tests/test-errno.c
new file mode 100644
index 0000000..54f5ae6
--- /dev/null
+++ b/gnulib-tests/test-errno.c
@@ -0,0 +1,119 @@
+/* Test of <errno.h> substitute.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <errno.h>
+
+/* Verify that the POSIX mandated errno values exist and can be used as
+   initializers outside of a function.
+   The variable names happen to match the Linux/x86 error numbers.  */
+int e1 = EPERM;
+int e2 = ENOENT;
+int e3 = ESRCH;
+int e4 = EINTR;
+int e5 = EIO;
+int e6 = ENXIO;
+int e7 = E2BIG;
+int e8 = ENOEXEC;
+int e9 = EBADF;
+int e10 = ECHILD;
+int e11 = EAGAIN;
+int e11a = EWOULDBLOCK;
+int e12 = ENOMEM;
+int e13 = EACCES;
+int e14 = EFAULT;
+int e16 = EBUSY;
+int e17 = EEXIST;
+int e18 = EXDEV;
+int e19 = ENODEV;
+int e20 = ENOTDIR;
+int e21 = EISDIR;
+int e22 = EINVAL;
+int e23 = ENFILE;
+int e24 = EMFILE;
+int e25 = ENOTTY;
+int e26 = ETXTBSY;
+int e27 = EFBIG;
+int e28 = ENOSPC;
+int e29 = ESPIPE;
+int e30 = EROFS;
+int e31 = EMLINK;
+int e32 = EPIPE;
+int e33 = EDOM;
+int e34 = ERANGE;
+int e35 = EDEADLK;
+int e36 = ENAMETOOLONG;
+int e37 = ENOLCK;
+int e38 = ENOSYS;
+int e39 = ENOTEMPTY;
+int e40 = ELOOP;
+int e42 = ENOMSG;
+int e43 = EIDRM;
+int e67 = ENOLINK;
+int e71 = EPROTO;
+int e72 = EMULTIHOP;
+int e74 = EBADMSG;
+int e75 = EOVERFLOW;
+int e84 = EILSEQ;
+int e88 = ENOTSOCK;
+int e89 = EDESTADDRREQ;
+int e90 = EMSGSIZE;
+int e91 = EPROTOTYPE;
+int e92 = ENOPROTOOPT;
+int e93 = EPROTONOSUPPORT;
+int e95 = EOPNOTSUPP;
+int e95a = ENOTSUP;
+int e97 = EAFNOSUPPORT;
+int e98 = EADDRINUSE;
+int e99 = EADDRNOTAVAIL;
+int e100 = ENETDOWN;
+int e101 = ENETUNREACH;
+int e102 = ENETRESET;
+int e103 = ECONNABORTED;
+int e104 = ECONNRESET;
+int e105 = ENOBUFS;
+int e106 = EISCONN;
+int e107 = ENOTCONN;
+int e110 = ETIMEDOUT;
+int e111 = ECONNREFUSED;
+int e113 = EHOSTUNREACH;
+int e114 = EALREADY;
+int e115 = EINPROGRESS;
+int e116 = ESTALE;
+int e122 = EDQUOT;
+int e125 = ECANCELED;
+int e130 = EOWNERDEAD;
+int e131 = ENOTRECOVERABLE;
+
+/* Don't verify that these errno values are all different, except for possibly
+   EWOULDBLOCK == EAGAIN.  Even Linux/x86 does not pass this check: it has
+   ENOTSUP == EOPNOTSUPP.  */
+
+int
+main ()
+{
+  /* Verify that errno can be assigned.  */
+  errno = EOVERFLOW;
+
+  /* snprintf() callers want to distinguish EINVAL and EOVERFLOW.  */
+  if (errno == EINVAL)
+    return 1;
+
+  return 0;
+}
diff --git a/gnulib-tests/test-exclude.c b/gnulib-tests/test-exclude.c
new file mode 100644
index 0000000..180f167
--- /dev/null
+++ b/gnulib-tests/test-exclude.c
@@ -0,0 +1,128 @@
+/* Test suite for exclude.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+   This file is part of the GNUlib Library.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <stdbool.h>
+#include <fnmatch.h>
+
+#include "exclude.h"
+#include "error.h"
+#include "argmatch.h"
+
+#ifndef FNM_CASEFOLD
+# define FNM_CASEFOLD 0
+#endif
+#ifndef FNM_LEADING_DIR
+# define FNM_LEADING_DIR 0
+#endif
+
+char const * const exclude_keywords[] = {
+  "noescape",
+  "pathname",
+  "period",
+  "leading_dir",
+  "casefold",
+  "anchored",
+  "include",
+  "wildcards",
+  NULL
+};
+
+int exclude_flags[] = {
+  FNM_NOESCAPE,
+  FNM_PATHNAME,
+  FNM_PERIOD,
+  FNM_LEADING_DIR,
+  FNM_CASEFOLD,
+  EXCLUDE_ANCHORED,
+  EXCLUDE_INCLUDE,
+  EXCLUDE_WILDCARDS
+};
+
+ARGMATCH_VERIFY (exclude_keywords, exclude_flags);
+
+/* Some packages define ARGMATCH_DIE and ARGMATCH_DIE_DECL in <config.h>, and
+   thus must link with a definition of that function.  Provide it here.  */
+#ifdef ARGMATCH_DIE_DECL
+
+_Noreturn ARGMATCH_DIE_DECL;
+ARGMATCH_DIE_DECL { exit (1); }
+
+#endif
+
+int
+main (int argc, char **argv)
+{
+  int exclude_options = 0;
+  struct exclude *exclude = new_exclude ();
+
+  if (argc == 1)
+    error (1, 0, "usage: %s file -- words...", argv[0]);
+
+  while (--argc)
+    {
+      char *opt = *++argv;
+      if (opt[0] == '-')
+        {
+          int neg = 0;
+          int flag;
+          char *s = opt + 1;
+
+          if (opt[1] == '-' && opt[2] == 0)
+            {
+              argc--;
+              break;
+            }
+          if (strlen (s) > 3 && memcmp (s, "no-", 3) == 0)
+            {
+              neg = 1;
+              s += 3;
+            }
+          flag = XARGMATCH (opt, s, exclude_keywords, exclude_flags);
+          if (neg)
+            exclude_options &= ~flag;
+          else
+            exclude_options |= flag;
+
+          /* Skip this test if invoked with -leading-dir on a system that
+             lacks support for FNM_LEADING_DIR. */
+          if (strcmp (s, "leading_dir") == 0 && FNM_LEADING_DIR == 0)
+            exit (77);
+
+          /* Likewise for -casefold and FNM_CASEFOLD.  */
+          if (strcmp (s, "casefold") == 0 && FNM_CASEFOLD == 0)
+            exit (77);
+        }
+      else if (add_exclude_file (add_exclude, exclude, opt,
+                                 exclude_options, '\n') != 0)
+        error (1, errno, "error loading %s", opt);
+    }
+
+  for (; argc; --argc)
+    {
+      char *word = *++argv;
+
+      printf ("%s: %d\n", word, excluded_file_name (exclude, word));
+    }
+
+  free_exclude (exclude);
+  return 0;
+}
diff --git a/gnulib-tests/test-exclude1.sh b/gnulib-tests/test-exclude1.sh
new file mode 100755
index 0000000..8b1a451
--- /dev/null
+++ b/gnulib-tests/test-exclude1.sh
@@ -0,0 +1,50 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+# Test literal matches
+
+cat > in <<EOT
+foo*
+bar
+Baz
+EOT
+
+cat > expected <<EOT
+foo: 0
+foo*: 1
+bar: 1
+foobar: 0
+baz: 0
+bar/qux: 0
+EOT
+
+${CHECKER} test-exclude in -- foo 'foo*' bar foobar baz bar/qux > out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/gnulib-tests/test-exclude2.sh b/gnulib-tests/test-exclude2.sh
new file mode 100755
index 0000000..db98de0
--- /dev/null
+++ b/gnulib-tests/test-exclude2.sh
@@ -0,0 +1,50 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+cat > in <<EOT
+foo*
+bar
+Baz
+EOT
+
+# Test case-insensitive literal matches
+
+cat > expected <<EOT
+foo: 0
+foo*: 1
+bar: 1
+foobar: 0
+baz: 1
+bar/qux: 0
+EOT
+
+${CHECKER} test-exclude -casefold in -- foo 'foo*' bar foobar baz bar/qux > out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/gnulib-tests/test-exclude3.sh b/gnulib-tests/test-exclude3.sh
new file mode 100755
index 0000000..6003fbd
--- /dev/null
+++ b/gnulib-tests/test-exclude3.sh
@@ -0,0 +1,50 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+# Test include
+
+cat > in <<EOT
+foo*
+bar
+Baz
+EOT
+
+cat > expected <<EOT
+foo: 1
+foo*: 0
+bar: 0
+foobar: 1
+baz: 1
+bar/qux: 1
+EOT
+
+${CHECKER} test-exclude -include in -- foo 'foo*' bar foobar baz bar/qux > out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/gnulib-tests/test-exclude4.sh b/gnulib-tests/test-exclude4.sh
new file mode 100755
index 0000000..b386b88
--- /dev/null
+++ b/gnulib-tests/test-exclude4.sh
@@ -0,0 +1,45 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+# Test wildcard matching
+
+cat > in <<EOT
+foo*
+bar
+Baz
+EOT
+
+cat > expected <<EOT
+foobar: 1
+EOT
+
+${CHECKER} test-exclude -wildcards in -- foobar > out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/gnulib-tests/test-exclude5.sh b/gnulib-tests/test-exclude5.sh
new file mode 100755
index 0000000..34ba665
--- /dev/null
+++ b/gnulib-tests/test-exclude5.sh
@@ -0,0 +1,48 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+# Test FNM_LEADING_DIR
+
+cat > in <<EOT
+foo*
+bar
+Baz
+EOT
+
+cat > expected <<EOT
+bar: 1
+bar/qux: 1
+barz: 0
+foo/bar: 1
+EOT
+
+${CHECKER} test-exclude -leading_dir in -- bar bar/qux barz foo/bar > out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/gnulib-tests/test-exclude6.sh b/gnulib-tests/test-exclude6.sh
new file mode 100755
index 0000000..be3a4c4
--- /dev/null
+++ b/gnulib-tests/test-exclude6.sh
@@ -0,0 +1,46 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+# Test anchored
+
+cat > in <<EOT
+foo*
+bar
+Baz
+EOT
+
+cat > expected <<EOT
+bar: 1
+foo/bar: 0
+EOT
+
+${CHECKER} test-exclude -anchored in -- bar foo/bar > out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/gnulib-tests/test-exclude7.sh b/gnulib-tests/test-exclude7.sh
new file mode 100755
index 0000000..ed4e5bc
--- /dev/null
+++ b/gnulib-tests/test-exclude7.sh
@@ -0,0 +1,47 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+# Test exclude precedence
+
+cat > in <<EOT
+foo*
+bar
+Baz
+EOT
+
+cat > expected <<EOT
+bar: 0
+bar: 1
+EOT
+
+${CHECKER} test-exclude in -include in -- bar > out || exit $?
+${CHECKER} test-exclude -include in -no-include in -- bar >> out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/gnulib-tests/test-exclude8.sh b/gnulib-tests/test-exclude8.sh
new file mode 100755
index 0000000..d496834
--- /dev/null
+++ b/gnulib-tests/test-exclude8.sh
@@ -0,0 +1,46 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2010-2020 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+# Test escaped metacharacters.
+
+cat > in <<'EOT'
+f\*e
+b[a\*]r
+EOT
+
+cat > expected <<'EOT'
+f*e: 1
+file: 0
+bar: 1
+EOT
+
+${CHECKER} test-exclude -wildcards in -- 'f*e' 'file' 'bar' > out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/gnulib-tests/test-faccessat.c b/gnulib-tests/test-faccessat.c
new file mode 100644
index 0000000..00342c6
--- /dev/null
+++ b/gnulib-tests/test-faccessat.c
@@ -0,0 +1,76 @@
+/* Test checking user's permissions for a file.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (faccessat, int, (int, const char *, int, int));
+
+#include <errno.h>
+#include <fcntl.h>
+
+#include "macros.h"
+
+#define BASE "test-faccessat.t"
+
+int
+main (void)
+{
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (faccessat (-1, "foo", F_OK, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (faccessat (99, "foo", F_OK, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Test behavior with trailing slash.  */
+  unlink (BASE "file");
+  ASSERT (faccessat (AT_FDCWD, ".", X_OK, 0) == 0);
+  ASSERT (faccessat (AT_FDCWD, "./", X_OK, 0) == 0);
+  ASSERT (close (open (BASE "file", O_CREAT | O_WRONLY, 0)) == 0);
+  ASSERT (faccessat (AT_FDCWD, BASE "file", F_OK, 0) == 0);
+  ASSERT (faccessat (AT_FDCWD, BASE "file/", F_OK, 0) != 0);
+  unlink (BASE "link1");
+  if (symlink (".", BASE "link1") == 0)
+    {
+      ASSERT (faccessat (AT_FDCWD, BASE "link1", X_OK, 0) == 0);
+      ASSERT (faccessat (AT_FDCWD, BASE "link1/", X_OK, 0) == 0);
+
+      unlink (BASE "link2");
+      ASSERT (symlink (BASE "file", BASE "link2") == 0);
+      ASSERT (faccessat (AT_FDCWD, BASE "link2", F_OK, 0) == 0);
+      ASSERT (faccessat (AT_FDCWD, BASE "link2/", F_OK, 0) != 0);
+      unlink (BASE "link2");
+
+      unlink (BASE "link3");
+      ASSERT (symlink (BASE "no-such-file", BASE "link3") == 0);
+      ASSERT (faccessat (AT_FDCWD, BASE "link3", F_OK, 0) != 0);
+      ASSERT (faccessat (AT_FDCWD, BASE "link3/", F_OK, 0) != 0);
+      unlink (BASE "link3");
+    }
+  unlink (BASE "link1");
+  unlink (BASE "file");
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fadvise.c b/gnulib-tests/test-fadvise.c
new file mode 100644
index 0000000..5d5d9c1
--- /dev/null
+++ b/gnulib-tests/test-fadvise.c
@@ -0,0 +1,50 @@
+/* Test that fadvise works as advertised.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Pádraig Brady.  */
+
+#include <config.h>
+#include <stdio.h>
+
+#include "fadvise.h"
+
+/* We ignore any errors as these hints are only advisory.
+ * There is the chance one can pass invalid ADVICE, which will
+ * not be indicated, but given the simplicity of the interface
+ * this is unlikely.  Also not returning errors allows the
+ * unconditional passing of descriptors to non standard files,
+ * which will just be ignored if unsupported.  */
+
+int
+main (void)
+{
+  /* Valid.  */
+  fadvise (stdin, FADVISE_SEQUENTIAL);
+  fdadvise (fileno (stdin), 0, 0, FADVISE_RANDOM);
+
+  /* Ignored.  */
+  fadvise (NULL, FADVISE_RANDOM);
+
+  /* Invalid.  */
+  fdadvise (42, 0, 0, FADVISE_RANDOM);
+  /* Unfortunately C enums are not types.
+     One could hack type safety by wrapping in a struct,
+     but it's probably not worth the complexity in this case.  */
+  fadvise (stdin, FADVISE_SEQUENTIAL + FADVISE_RANDOM);
+  fadvise (stdin, 4242);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fchdir.c b/gnulib-tests/test-fchdir.c
new file mode 100644
index 0000000..9fc3cdb
--- /dev/null
+++ b/gnulib-tests/test-fchdir.c
@@ -0,0 +1,110 @@
+/* Test changing to a directory named by a file descriptor.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fchdir, int, (int));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "cloexec.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  char *cwd;
+  int fd;
+  int i;
+
+  cwd = getcwd (NULL, 0);
+  ASSERT (cwd);
+
+  fd = open (".", O_RDONLY);
+  ASSERT (0 <= fd);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (fchdir (-1) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (fchdir (99) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Check for other failure cases.  */
+  {
+    int bad_fd = open ("/dev/null", O_RDONLY);
+    ASSERT (0 <= bad_fd);
+    errno = 0;
+    ASSERT (fchdir (bad_fd) == -1);
+    ASSERT (errno == ENOTDIR);
+    ASSERT (close (bad_fd) == 0);
+  }
+
+  /* Repeat test twice, once in '.' and once in '..'.  */
+  for (i = 0; i < 2; i++)
+    {
+      ASSERT (chdir (&".."[1 - i]) == 0);
+      ASSERT (fchdir (fd) == 0);
+      {
+        size_t len = strlen (cwd) + 1;
+        char *new_dir = malloc (len);
+        ASSERT (new_dir);
+        ASSERT (getcwd (new_dir, len) == new_dir);
+        ASSERT (strcmp (cwd, new_dir) == 0);
+        free (new_dir);
+      }
+
+      /* For second iteration, use a cloned fd, to ensure that dup
+         remembers whether an fd was associated with a directory.  */
+      if (!i)
+        {
+          int new_fd = dup (fd);
+          ASSERT (0 <= new_fd);
+          ASSERT (close (fd) == 0);
+          ASSERT (dup2 (new_fd, fd) == fd);
+          ASSERT (close (new_fd) == 0);
+          ASSERT (dup_cloexec (fd) == new_fd);
+          ASSERT (dup2 (new_fd, fd) == fd);
+          ASSERT (close (new_fd) == 0);
+          ASSERT (fcntl (fd, F_DUPFD_CLOEXEC, new_fd) == new_fd);
+          ASSERT (close (fd) == 0);
+          ASSERT (fcntl (new_fd, F_DUPFD, fd) == fd);
+          ASSERT (close (new_fd) == 0);
+#if GNULIB_TEST_DUP3
+          ASSERT (dup3 (fd, new_fd, 0) == new_fd);
+          ASSERT (dup3 (new_fd, fd, 0) == fd);
+          ASSERT (close (new_fd) == 0);
+#endif
+        }
+    }
+
+  free (cwd);
+  return 0;
+}
diff --git a/gnulib-tests/test-fchmodat.c b/gnulib-tests/test-fchmodat.c
new file mode 100644
index 0000000..f6b695b
--- /dev/null
+++ b/gnulib-tests/test-fchmodat.c
@@ -0,0 +1,64 @@
+/* Test changing the protections of a file relative to an open directory.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fchmodat, int, (int, const char *, mode_t, int));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define BASE "test-fchmodat."
+
+int
+main (void)
+{
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (fchmodat (-1, "foo", 0600, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (fchmodat (99, "foo", 0600, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Test that fchmodat works on non-symlinks, when given
+     the AT_SYMLINK_NOFOLLOW flag.  */
+  {
+    struct stat statbuf;
+    unlink (BASE "file");
+    ASSERT (close (creat (BASE "file", 0600)) == 0);
+    ASSERT (fchmodat (AT_FDCWD, BASE "file", 0400, AT_SYMLINK_NOFOLLOW) == 0);
+    ASSERT (stat (BASE "file", &statbuf) >= 0);
+    ASSERT ((statbuf.st_mode & 0700) == 0400);
+    /* Clean up.  */
+    ASSERT (chmod (BASE "file", 0600) == 0);
+    ASSERT (unlink (BASE "file") == 0);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fchownat.c b/gnulib-tests/test-fchownat.c
new file mode 100644
index 0000000..960e2e9
--- /dev/null
+++ b/gnulib-tests/test-fchownat.c
@@ -0,0 +1,105 @@
+/* Tests of fchownat.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fchownat, int, (int, char const *, uid_t, gid_t, int));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+#include "mgetgroups.h"
+#include "openat.h"
+#include "stat-time.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#ifndef BASE
+# define BASE "test-fchownat.t"
+#endif
+
+#include "test-chown.h"
+#include "test-lchown.h"
+
+static int dfd = AT_FDCWD;
+
+/* Wrapper around fchownat to test chown behavior.  */
+static int
+do_chown (char const *name, uid_t user, gid_t group)
+{
+#ifdef TEST_CHOWNAT
+  return chownat (dfd, name, user, group);
+#else
+  return fchownat (dfd, name, user, group, 0);
+#endif
+}
+
+/* Wrapper around fchownat to test lchown behavior.  */
+static int
+do_lchown (char const *name, uid_t user, gid_t group)
+{
+#ifdef TEST_CHOWNAT
+  return lchownat (dfd, name, user, group);
+#else
+  return fchownat (dfd, name, user, group, AT_SYMLINK_NOFOLLOW);
+#endif
+}
+
+int
+main (int argc _GL_UNUSED, char *argv[])
+{
+  int result1; /* Skip because of no chown/symlink support.  */
+  int result2; /* Skip because of no lchown support.  */
+
+  /* Clean up any trash from prior testsuite runs.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (fchownat (-1, "foo", getuid (), getgid (), 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (fchownat (99, "foo", getuid (), getgid (), 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Basic tests.  */
+  result1 = test_chown (do_chown, true);
+  result2 = test_lchown (do_lchown, result1 == 0);
+  dfd = open (".", O_RDONLY);
+  ASSERT (0 <= dfd);
+  ASSERT (test_chown (do_chown, false) == result1);
+  ASSERT (test_lchown (do_lchown, false) == result2);
+  /* We expect 0/0, 0/77, or 77/77, but not 77/0.  */
+  ASSERT (result1 <= result2);
+  ASSERT (close (dfd) == 0);
+
+  /* FIXME - add additional tests of dfd not at current directory.  */
+  return result1 | result2;
+}
diff --git a/gnulib-tests/test-fclose.c b/gnulib-tests/test-fclose.c
new file mode 100644
index 0000000..36c2b32
--- /dev/null
+++ b/gnulib-tests/test-fclose.c
@@ -0,0 +1,114 @@
+/* Test of fclose module.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fclose, int, (FILE *));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define BASE "test-fclose.t"
+
+int
+main (int argc, char **argv)
+{
+  const char buf[] = "hello world";
+  int fd;
+  int fd2;
+  FILE *f;
+
+  /* Prepare a seekable file.  */
+  fd = open (BASE, O_RDWR | O_CREAT | O_TRUNC, 0600);
+  ASSERT (0 <= fd);
+  ASSERT (write (fd, buf, sizeof buf) == sizeof buf);
+  ASSERT (lseek (fd, 1, SEEK_SET) == 1);
+
+  /* Create an output stream visiting the file; when it is closed, all
+     other file descriptors visiting the file must see the new file
+     position.  */
+  fd2 = dup (fd);
+  ASSERT (0 <= fd2);
+  f = fdopen (fd2, "w");
+  ASSERT (f);
+  ASSERT (fputc (buf[1], f) == buf[1]);
+  ASSERT (fclose (f) == 0);
+  errno = 0;
+  ASSERT (lseek (fd2, 0, SEEK_CUR) == -1);
+  ASSERT (errno == EBADF);
+  ASSERT (lseek (fd, 0, SEEK_CUR) == 2);
+
+  /* Likewise for an input stream.  */
+  fd2 = dup (fd);
+  ASSERT (0 <= fd2);
+  f = fdopen (fd2, "r");
+  ASSERT (f);
+  ASSERT (fgetc (f) == buf[2]);
+  ASSERT (fclose (f) == 0);
+  errno = 0;
+  ASSERT (lseek (fd2, 0, SEEK_CUR) == -1);
+  ASSERT (errno == EBADF);
+  ASSERT (lseek (fd, 0, SEEK_CUR) == 3);
+
+  /* Test that fclose() sets errno if someone else closes the stream
+     fd behind the back of stdio.  */
+  {
+    FILE *fp = fdopen (fd, "w+");
+    ASSERT (fp != NULL);
+    ASSERT (close (fd) == 0);
+    errno = 0;
+    ASSERT (fclose (fp) == EOF);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Test that fclose() sets errno if the stream was constructed with
+     an invalid file descriptor.  */
+  {
+    FILE *fp = fdopen (-1, "r");
+    if (fp != NULL)
+      {
+        errno = 0;
+        ASSERT (fclose (fp) == EOF);
+        ASSERT (errno == EBADF);
+      }
+  }
+  {
+    FILE *fp;
+    close (99);
+    fp = fdopen (99, "r");
+    if (fp != NULL)
+      {
+        errno = 0;
+        ASSERT (fclose (fp) == EOF);
+        ASSERT (errno == EBADF);
+      }
+  }
+
+  /* Clean up.  */
+  ASSERT (remove (BASE) == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fcntl-h.c b/gnulib-tests/test-fcntl-h.c
new file mode 100644
index 0000000..22a6212
--- /dev/null
+++ b/gnulib-tests/test-fcntl-h.c
@@ -0,0 +1,130 @@
+/* Test of <fcntl.h> substitute.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <fcntl.h>
+
+/* Check that the various O_* macros are defined.  */
+int o = (O_DIRECT | O_DIRECTORY | O_DSYNC | O_IGNORE_CTTY | O_NDELAY | O_NOATIME
+         | O_NONBLOCK | O_NOCTTY | O_NOFOLLOW | O_NOLINK | O_NOLINKS | O_NOTRANS
+         | O_RSYNC | O_SYNC | O_TTY_INIT | O_BINARY | O_TEXT);
+
+/* Check that the various SEEK_* macros are defined.  */
+int sk[] = { SEEK_CUR, SEEK_END, SEEK_SET };
+
+/* Check that the FD_* macros are defined.  */
+int i = FD_CLOEXEC;
+
+/* Check that the types are all defined.  */
+pid_t t1;
+off_t t2;
+mode_t t3;
+
+int
+main (void)
+{
+  /* Ensure no overlap in SEEK_*. */
+  switch (0)
+    {
+    case SEEK_CUR:
+    case SEEK_END:
+    case SEEK_SET:
+      ;
+    }
+
+  /* Ensure no dangerous overlap in non-zero gnulib-defined replacements.  */
+  switch (O_RDONLY)
+    {
+      /* Access modes */
+    case O_RDONLY:
+    case O_WRONLY:
+    case O_RDWR:
+#if O_EXEC && O_EXEC != O_RDONLY
+    case O_EXEC:
+#endif
+#if O_SEARCH && O_EXEC != O_SEARCH && O_SEARCH != O_RDONLY
+    case O_SEARCH:
+#endif
+      i = ! (~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH));
+      break;
+
+      /* Everyone should have these */
+    case O_CREAT:
+    case O_EXCL:
+    case O_TRUNC:
+    case O_APPEND:
+      break;
+
+      /* These might be 0 or O_RDONLY, only test non-zero versions.  */
+#if O_CLOEXEC
+    case O_CLOEXEC:
+#endif
+#if O_DIRECT
+    case O_DIRECT:
+#endif
+#if O_DIRECTORY
+    case O_DIRECTORY:
+#endif
+#if O_DSYNC
+    case O_DSYNC:
+#endif
+#if O_IGNORE_CTTY
+    case O_IGNORE_CTTY:
+#endif
+#if O_NOATIME
+    case O_NOATIME:
+#endif
+#if O_NONBLOCK
+    case O_NONBLOCK:
+#endif
+#if O_NOCTTY
+    case O_NOCTTY:
+#endif
+#if O_NOFOLLOW
+    case O_NOFOLLOW:
+#endif
+#if O_NOLINK
+    case O_NOLINK:
+#endif
+#if O_NOLINKS
+    case O_NOLINKS:
+#endif
+#if O_NOTRANS
+    case O_NOTRANS:
+#endif
+#if O_RSYNC && O_RSYNC != O_DSYNC
+    case O_RSYNC:
+#endif
+#if O_SYNC && O_SYNC != O_DSYNC && O_SYNC != O_RSYNC
+    case O_SYNC:
+#endif
+#if O_TTY_INIT
+    case O_TTY_INIT:
+#endif
+#if O_BINARY
+    case O_BINARY:
+#endif
+#if O_TEXT
+    case O_TEXT:
+#endif
+      ;
+    }
+
+  return !i;
+}
diff --git a/gnulib-tests/test-fcntl-safer.c b/gnulib-tests/test-fcntl-safer.c
new file mode 100644
index 0000000..62633ba
--- /dev/null
+++ b/gnulib-tests/test-fcntl-safer.c
@@ -0,0 +1,38 @@
+/* Test of opening a file descriptor.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "fcntl--.h"
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define BASE "test-fcntl-safer.t"
+
+#include "test-open.h"
+
+int
+main (void)
+{
+  return test_open (open, true);
+}
diff --git a/gnulib-tests/test-fcntl.c b/gnulib-tests/test-fcntl.c
new file mode 100644
index 0000000..d5e7e63
--- /dev/null
+++ b/gnulib-tests/test-fcntl.c
@@ -0,0 +1,414 @@
+/* Test of fcntl(2).
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <fcntl.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fcntl, int, (int, int, ...));
+
+/* Helpers.  */
+#include <errno.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <unistd.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+#endif
+
+#include "binary-io.h"
+#include "macros.h"
+
+#if !O_BINARY
+# define setmode(f,m) zero ()
+static int zero (void) { return 0; }
+#endif
+
+/* Return true if FD is open.  */
+static bool
+is_open (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
+#else
+# ifndef F_GETFL
+#  error Please port fcntl to your platform
+# endif
+  return 0 <= fcntl (fd, F_GETFL);
+#endif
+}
+
+/* Return true if FD is open and inheritable across exec/spawn.  */
+static bool
+is_inheritable (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  DWORD flags;
+  if (h == INVALID_HANDLE_VALUE || GetHandleInformation (h, &flags) == 0)
+    return false;
+  return (flags & HANDLE_FLAG_INHERIT) != 0;
+#else
+# ifndef F_GETFD
+#  error Please port fcntl to your platform
+# endif
+  int i = fcntl (fd, F_GETFD);
+  return 0 <= i && (i & FD_CLOEXEC) == 0;
+#endif
+}
+
+/* Return non-zero if FD is open in the given MODE, which is either
+   O_TEXT or O_BINARY.  */
+static bool
+is_mode (int fd, int mode)
+{
+  int value = setmode (fd, O_BINARY);
+  setmode (fd, value);
+  return mode == value;
+}
+
+/* Since native fcntl can have more supported operations than our
+   replacement is aware of, and since various operations assign
+   different types to the vararg argument, a wrapper around fcntl must
+   be able to pass a vararg of unknown type on through to the original
+   fcntl.  Make sure that this works properly: func1 behaves like the
+   original fcntl interpreting the vararg as an int or a pointer to a
+   struct, and func2 behaves like rpl_fcntl that doesn't know what
+   type to forward.  */
+struct dummy_struct
+{
+  long filler;
+  int value;
+};
+static int
+func1 (int a, ...)
+{
+  va_list arg;
+  int i;
+  va_start (arg, a);
+  if (a < 4)
+    i = va_arg (arg, int);
+  else
+    {
+      struct dummy_struct *s = va_arg (arg, struct dummy_struct *);
+      i = s->value;
+    }
+  va_end (arg);
+  return i;
+}
+static int
+func2 (int a, ...)
+{
+  va_list arg;
+  void *p;
+  va_start (arg, a);
+  p = va_arg (arg, void *);
+  va_end (arg);
+  return func1 (a, p);
+}
+
+/* Ensure that all supported fcntl actions are distinct, and
+   usable in preprocessor expressions.  */
+static void
+check_flags (void)
+{
+  switch (0)
+    {
+    case F_DUPFD:
+#if F_DUPFD
+#endif
+
+    case F_DUPFD_CLOEXEC:
+#if F_DUPFD_CLOEXEC
+#endif
+
+    case F_GETFD:
+#if F_GETFD
+#endif
+
+#ifdef F_SETFD
+    case F_SETFD:
+# if F_SETFD
+# endif
+#endif
+
+#ifdef F_GETFL
+    case F_GETFL:
+# if F_GETFL
+# endif
+#endif
+
+#ifdef F_SETFL
+    case F_SETFL:
+# if F_SETFL
+# endif
+#endif
+
+#ifdef F_GETOWN
+    case F_GETOWN:
+# if F_GETOWN
+# endif
+#endif
+
+#ifdef F_SETOWN
+    case F_SETOWN:
+# if F_SETOWN
+# endif
+#endif
+
+#ifdef F_GETLK
+    case F_GETLK:
+# if F_GETLK
+# endif
+#endif
+
+#ifdef F_SETLK
+    case F_SETLK:
+# if F_SETLK
+# endif
+#endif
+
+#ifdef F_SETLKW
+    case F_SETLKW:
+# if F_SETLKW
+# endif
+#endif
+
+      ;
+    }
+}
+
+int
+main (void)
+{
+  const char *file = "test-fcntl.tmp";
+  int fd;
+  int bad_fd = getdtablesize ();
+
+  /* Sanity check that rpl_fcntl is likely to work.  */
+  ASSERT (func2 (1, 2) == 2);
+  ASSERT (func2 (2, -2) == -2);
+  ASSERT (func2 (3, 0x80000000) == 0x80000000);
+  {
+    struct dummy_struct s = { 0L, 4 };
+    ASSERT (func2 (4, &s) == 4);
+  }
+  check_flags ();
+
+  /* Assume std descriptors were provided by invoker, and ignore fds
+     that might have been inherited.  */
+  fd = creat (file, 0600);
+  ASSERT (STDERR_FILENO < fd);
+  close (fd + 1);
+  close (fd + 2);
+
+  /* For F_DUPFD*, the source must be valid.  */
+  errno = 0;
+  ASSERT (fcntl (-1, F_DUPFD, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_DUPFD, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_DUPFD, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (-1, F_DUPFD_CLOEXEC, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_DUPFD_CLOEXEC, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_DUPFD_CLOEXEC, 0) == -1);
+  ASSERT (errno == EBADF);
+
+  /* For F_DUPFD*, the destination must be valid.  */
+  errno = 0;
+  ASSERT (fcntl (fd, F_DUPFD, -1) == -1);
+  ASSERT (errno == EINVAL);
+  errno = 0;
+  ASSERT (fcntl (fd, F_DUPFD, bad_fd) == -1);
+  ASSERT (errno == EINVAL);
+  errno = 0;
+  ASSERT (fcntl (fd, F_DUPFD_CLOEXEC, -1) == -1);
+  ASSERT (errno == EINVAL);
+  errno = 0;
+  ASSERT (fcntl (fd, F_DUPFD_CLOEXEC, bad_fd) == -1);
+  ASSERT (errno == EINVAL
+          || errno == EMFILE /* WSL */);
+
+  /* For F_DUPFD*, check for correct inheritance, as well as
+     preservation of text vs. binary.  */
+  setmode (fd, O_BINARY);
+  ASSERT (is_open (fd));
+  ASSERT (!is_open (fd + 1));
+  ASSERT (!is_open (fd + 2));
+  ASSERT (is_inheritable (fd));
+  ASSERT (is_mode (fd, O_BINARY));
+
+  ASSERT (fcntl (fd, F_DUPFD, fd) == fd + 1);
+  ASSERT (is_open (fd));
+  ASSERT (is_open (fd + 1));
+  ASSERT (!is_open (fd + 2));
+  ASSERT (is_inheritable (fd + 1));
+  ASSERT (is_mode (fd, O_BINARY));
+  ASSERT (is_mode (fd + 1, O_BINARY));
+  ASSERT (close (fd + 1) == 0);
+
+  ASSERT (fcntl (fd, F_DUPFD_CLOEXEC, fd + 2) == fd + 2);
+  ASSERT (is_open (fd));
+  ASSERT (!is_open (fd + 1));
+  ASSERT (is_open (fd + 2));
+  ASSERT (is_inheritable (fd));
+  ASSERT (!is_inheritable (fd + 2));
+  ASSERT (is_mode (fd, O_BINARY));
+  ASSERT (is_mode (fd + 2, O_BINARY));
+  ASSERT (close (fd) == 0);
+
+  setmode (fd + 2, O_TEXT);
+  ASSERT (fcntl (fd + 2, F_DUPFD, fd + 1) == fd + 1);
+  ASSERT (!is_open (fd));
+  ASSERT (is_open (fd + 1));
+  ASSERT (is_open (fd + 2));
+  ASSERT (is_inheritable (fd + 1));
+  ASSERT (!is_inheritable (fd + 2));
+  ASSERT (is_mode (fd + 1, O_TEXT));
+  ASSERT (is_mode (fd + 2, O_TEXT));
+  ASSERT (close (fd + 1) == 0);
+
+  ASSERT (fcntl (fd + 2, F_DUPFD_CLOEXEC, 0) == fd);
+  ASSERT (is_open (fd));
+  ASSERT (!is_open (fd + 1));
+  ASSERT (is_open (fd + 2));
+  ASSERT (!is_inheritable (fd));
+  ASSERT (!is_inheritable (fd + 2));
+  ASSERT (is_mode (fd, O_TEXT));
+  ASSERT (is_mode (fd + 2, O_TEXT));
+  ASSERT (close (fd + 2) == 0);
+
+  /* Test F_GETFD on invalid file descriptors.  */
+  errno = 0;
+  ASSERT (fcntl (-1, F_GETFD) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_GETFD) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_GETFD) == -1);
+  ASSERT (errno == EBADF);
+
+  /* Test F_GETFD, the FD_CLOEXEC bit.  */
+  {
+    int result = fcntl (fd, F_GETFD);
+    ASSERT (0 <= result);
+    ASSERT ((result & FD_CLOEXEC) == FD_CLOEXEC);
+    ASSERT (dup (fd) == fd + 1);
+    result = fcntl (fd + 1, F_GETFD);
+    ASSERT (0 <= result);
+    ASSERT ((result & FD_CLOEXEC) == 0);
+    ASSERT (close (fd + 1) == 0);
+  }
+
+#ifdef F_SETFD
+  /* Test F_SETFD on invalid file descriptors.  */
+  errno = 0;
+  ASSERT (fcntl (-1, F_SETFD, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_SETFD, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_SETFD, 0) == -1);
+  ASSERT (errno == EBADF);
+#endif
+
+#ifdef F_GETFL
+  /* Test F_GETFL on invalid file descriptors.  */
+  errno = 0;
+  ASSERT (fcntl (-1, F_GETFL) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_GETFL) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_GETFL) == -1);
+  ASSERT (errno == EBADF);
+#endif
+
+#ifdef F_SETFL
+  /* Test F_SETFL on invalid file descriptors.  */
+  errno = 0;
+  ASSERT (fcntl (-1, F_SETFL, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_SETFL, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_SETFL, 0) == -1);
+  ASSERT (errno == EBADF);
+#endif
+
+#ifdef F_GETOWN
+  /* Test F_GETOWN on invalid file descriptors.  */
+  errno = 0;
+  ASSERT (fcntl (-1, F_GETOWN) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_GETOWN) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_GETOWN) == -1);
+  ASSERT (errno == EBADF);
+#endif
+
+#ifdef F_SETOWN
+  /* Test F_SETFL on invalid file descriptors.  */
+  errno = 0;
+  ASSERT (fcntl (-1, F_SETOWN, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_SETOWN, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_SETOWN, 0) == -1);
+  ASSERT (errno == EBADF);
+#endif
+
+  /* Cleanup.  */
+  ASSERT (close (fd) == 0);
+  ASSERT (unlink (file) == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fdatasync.c b/gnulib-tests/test-fdatasync.c
new file mode 100644
index 0000000..403cc97
--- /dev/null
+++ b/gnulib-tests/test-fdatasync.c
@@ -0,0 +1,81 @@
+/* Test of fdatasync() function.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fdatasync, int, (int));
+
+#include <errno.h>
+#include <fcntl.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  int fd;
+  const char *file = "test-fdatasync.txt";
+
+  /* Assuming stdin and stdout are ttys, fdatasync is allowed to fail, but
+     may succeed as an extension.  */
+  for (fd = 0; fd < 2; fd++)
+    if (fdatasync (fd) != 0)
+      {
+        ASSERT (errno == EINVAL /* POSIX */
+                || errno == ENOTSUP /* seen on Mac OS X 10.5 */
+                || errno == EBADF /* seen on AIX 7.1 */
+                || errno == EIO /* seen on mingw */
+                );
+      }
+
+  /* fdatasync must fail on invalid fd.  */
+  {
+    errno = 0;
+    ASSERT (fdatasync (-1) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (fdatasync (99) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  fd = open (file, O_WRONLY|O_CREAT|O_TRUNC, 0644);
+  ASSERT (0 <= fd);
+  ASSERT (write (fd, "hello", 5) == 5);
+  ASSERT (fdatasync (fd) == 0);
+  ASSERT (close (fd) == 0);
+
+#if 0
+  /* POSIX is self-contradictory on whether fdatasync must fail on
+     read-only file descriptors.  Glibc allows it, as does our
+     implementation if fsync allows it.  */
+  fd = open (file, O_RDONLY);
+  ASSERT (0 <= fd);
+  errno = 0;
+  ASSERT (fdatasync (fd) == -1);
+  ASSERT (errno == EBADF);
+  ASSERT (close (fd) == 0);
+#endif
+
+  ASSERT (unlink (file) == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fdopen.c b/gnulib-tests/test-fdopen.c
new file mode 100644
index 0000000..e10a858
--- /dev/null
+++ b/gnulib-tests/test-fdopen.c
@@ -0,0 +1,49 @@
+/* Test opening a stream with a file descriptor.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fdopen, FILE *, (int, const char *));
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Test behavior on failure.  POSIX makes it hard to check for
+     failure, since the behavior is not well-defined on invalid file
+     descriptors, so try fdopen 1000 times and if that's not enough to
+     fail due to EMFILE, so be it.  */
+
+  int i;
+  for (i = 0; i < 1000; i++)
+    {
+      errno = 0;
+      if (! fdopen (STDOUT_FILENO, "w"))
+        {
+          ASSERT (errno != 0);
+          break;
+        }
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fdopendir.c b/gnulib-tests/test-fdopendir.c
new file mode 100644
index 0000000..eda9153
--- /dev/null
+++ b/gnulib-tests/test-fdopendir.c
@@ -0,0 +1,80 @@
+/* Test opening a directory stream from a file descriptor.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <dirent.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fdopendir, DIR *, (int));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (int argc _GL_UNUSED, char *argv[])
+{
+  DIR *d;
+  int fd;
+
+  /* A non-directory cannot be turned into a directory stream.  */
+  fd = open ("test-fdopendir.tmp", O_RDONLY | O_CREAT, 0600);
+  ASSERT (0 <= fd);
+  errno = 0;
+  ASSERT (fdopendir (fd) == NULL);
+  ASSERT (errno == ENOTDIR);
+  ASSERT (close (fd) == 0);
+  ASSERT (unlink ("test-fdopendir.tmp") == 0);
+
+  /* A bad fd cannot be turned into a stream.  */
+  {
+    errno = 0;
+    ASSERT (fdopendir (-1) == NULL);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (fdopendir (99) == NULL);
+    ASSERT (errno == EBADF);
+  }
+
+  /* This should work.  */
+  fd = open (".", O_RDONLY);
+  ASSERT (0 <= fd);
+  d = fdopendir (fd);
+  ASSERT (d);
+  /* fdopendir should not close fd.  */
+  ASSERT (dup2 (fd, fd) == fd);
+
+  /* Don't test dirfd here.  dirfd (d) must return fd on current POSIX
+     platforms, but on pre-2008 platforms or on non-POSIX platforms
+     dirfd (fd) might return some other descriptor, or -1, and gnulib
+     does not work around this porting problem.  */
+
+  ASSERT (closedir (d) == 0);
+  /* Now we can guarantee that fd must be closed.  */
+  errno = 0;
+  ASSERT (dup2 (fd, fd) == -1);
+  ASSERT (errno == EBADF);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fdutimensat.c b/gnulib-tests/test-fdutimensat.c
new file mode 100644
index 0000000..a4a0a16
--- /dev/null
+++ b/gnulib-tests/test-fdutimensat.c
@@ -0,0 +1,151 @@
+/* Tests of fdutimensat.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include "utimens.h"
+
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-fdutimensat.t"
+
+#include "test-futimens.h"
+#include "test-lutimens.h"
+#include "test-utimens.h"
+
+static int dfd = AT_FDCWD;
+
+/* Wrap fdutimensat to behave like futimens.  */
+static int
+do_futimens (int fd, struct timespec const times[2])
+{
+  return fdutimensat (fd, dfd, NULL, times, 0);
+}
+
+/* Test the use of file descriptors alongside a name.  */
+static int
+do_fdutimens (char const *name, struct timespec const times[2])
+{
+  int result;
+  int nofollow_result;
+  int nofollow_errno;
+  int fd = openat (dfd, name, O_WRONLY);
+  if (fd < 0)
+    fd = openat (dfd, name, O_RDONLY);
+  errno = 0;
+  nofollow_result = fdutimensat (fd, dfd, name, times, AT_SYMLINK_NOFOLLOW);
+  nofollow_errno = errno;
+  result = fdutimensat (fd, dfd, name, times, 0);
+  ASSERT (result == nofollow_result
+          || (nofollow_result == -1 && nofollow_errno == ENOSYS));
+  if (0 <= fd)
+    {
+      int saved_errno = errno;
+      close (fd);
+      errno = saved_errno;
+    }
+  return result;
+}
+
+/* Wrap lutimensat to behave like lutimens.  */
+static int
+do_lutimens (const char *name, struct timespec const times[2])
+{
+  return lutimensat (dfd, name, times);
+}
+
+/* Wrap fdutimensat to behave like lutimens.  */
+static int
+do_lutimens1 (const char *name, struct timespec const times[2])
+{
+  return fdutimensat (-1, dfd, name, times, AT_SYMLINK_NOFOLLOW);
+}
+
+/* Wrap fdutimensat to behave like utimens.  */
+static int
+do_utimens (const char *name, struct timespec const times[2])
+{
+  return fdutimensat (-1, dfd, name, times, 0);
+}
+
+int
+main (void)
+{
+  int result1; /* Skip because of no symlink support.  */
+  int result2; /* Skip because of no futimens support.  */
+  int result3; /* Skip because of no lutimens support.  */
+  int fd;
+
+  /* Clean up any trash from prior testsuite runs.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  /* Basic tests.  */
+  result1 = test_utimens (do_utimens, true);
+  ASSERT (test_utimens (do_fdutimens, false) == result1);
+  result2 = test_futimens (do_futimens, result1 == 0);
+  result3 = test_lutimens (do_lutimens, (result1 + result2) == 0);
+  /* We expect 0/0, 0/77, or 77/77, but not 77/0.  */
+  ASSERT (result1 <= result3);
+  ASSERT (test_lutimens (do_lutimens1, (result1 + result2) == 0) == result3);
+  dfd = open (".", O_RDONLY);
+  ASSERT (0 <= dfd);
+  ASSERT (test_utimens (do_utimens, false) == result1);
+  ASSERT (test_utimens (do_fdutimens, false) == result1);
+  ASSERT (test_futimens (do_futimens, false) == result2);
+  ASSERT (test_lutimens (do_lutimens, false) == result3);
+  ASSERT (test_lutimens (do_lutimens1, false) == result3);
+
+  /* Directory relative tests.  */
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  ASSERT (chdir (BASE "dir") == 0);
+  fd = creat ("file", 0600);
+  ASSERT (0 <= fd);
+  errno = 0;
+  ASSERT (fdutimensat (AT_FDCWD, fd, ".", NULL, 0) == -1);
+  ASSERT (errno == ENOTDIR);
+  {
+    struct timespec ts[2];
+    struct stat st;
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = 0;
+    ts[1] = ts[0];
+    ASSERT (fdutimensat (fd, dfd, BASE "dir/file", ts, 0) == 0);
+    ASSERT (stat ("file", &st) == 0);
+    ASSERT (st.st_atime == Y2K);
+    ASSERT (get_stat_atime_ns (&st) == 0);
+    ASSERT (st.st_mtime == Y2K);
+    ASSERT (get_stat_mtime_ns (&st) == 0);
+  }
+  ASSERT (close (fd) == 0);
+  ASSERT (close (dfd) == 0);
+  errno = 0;
+  ASSERT (fdutimensat (-1, dfd, ".", NULL, 0) == -1);
+  ASSERT (errno == EBADF);
+
+  /* Cleanup.  */
+  ASSERT (chdir ("..") == 0);
+  ASSERT (unlink (BASE "dir/file") == 0);
+  ASSERT (rmdir (BASE "dir") == 0);
+  return result1 | result2 | result3;
+}
diff --git a/gnulib-tests/test-fflush.c b/gnulib-tests/test-fflush.c
new file mode 100644
index 0000000..cf61905
--- /dev/null
+++ b/gnulib-tests/test-fflush.c
@@ -0,0 +1,191 @@
+/* Test of POSIX compatible fflush() function.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake, 2007.  */
+
+#include <config.h>
+
+/* None of the files accessed by this test are large, so disable the
+   ftell link warning if we are not using the gnulib ftell module.  */
+#define _GL_NO_LARGE_FILES
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fflush, int, (FILE *));
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  FILE *f;
+  char buffer[10];
+  int fd;
+
+  /* Create test file.  */
+  f = fopen ("test-fflush.txt", "w");
+  if (!f || fwrite ("1234567890ABCDEFG", 1, 17, f) != 17 || fclose (f) != 0)
+    {
+      fputs ("Failed to create sample file.\n", stderr);
+      unlink ("test-fflush.txt");
+      return 1;
+    }
+
+  /* Test fflush.  */
+  f = fopen ("test-fflush.txt", "r");
+  ASSERT (f != NULL);
+  fd = fileno (f);
+  if (!f || 0 > fd || fread (buffer, 1, 5, f) != 5)
+    {
+      fputs ("Failed initial read of sample file.\n", stderr);
+      if (f)
+        fclose (f);
+      unlink ("test-fflush.txt");
+      return 1;
+    }
+  /* For deterministic results, ensure f read a bigger buffer.
+     This is not the case on BeOS, nor on uClibc.  */
+#if !(defined __BEOS__ || defined __UCLIBC__)
+  if (lseek (fd, 0, SEEK_CUR) == 5)
+    {
+      fputs ("Sample file was not buffered after fread.\n", stderr);
+      fclose (f);
+      unlink ("test-fflush.txt");
+      return 1;
+    }
+#endif
+  /* POSIX requires fflush-fseek to set file offset of fd.  */
+  if (fflush (f) != 0 || fseeko (f, 0, SEEK_CUR) != 0)
+    {
+      fputs ("Failed to flush-fseek sample file.\n", stderr);
+      fclose (f);
+      unlink ("test-fflush.txt");
+      return 1;
+    }
+  /* Check that offset is correct.  */
+  if (lseek (fd, 0, SEEK_CUR) != 5)
+    {
+      fprintf (stderr, "File offset is wrong after fseek: %ld.\n",
+               (long) lseek (fd, 0, SEEK_CUR));
+      fclose (f);
+      unlink ("test-fflush.txt");
+      return 1;
+    }
+  if (ftell (f) != 5)
+    {
+      fprintf (stderr, "ftell result is wrong after fseek: %ld.\n",
+               (long) ftell (f));
+      fclose (f);
+      unlink ("test-fflush.txt");
+      return 1;
+    }
+  /* Check that file reading resumes at correct location.  */
+  if (fgetc (f) != '6')
+    {
+      fputs ("Failed to read next byte after fseek.\n", stderr);
+      fclose (f);
+      unlink ("test-fflush.txt");
+      return 1;
+    }
+  /* For deterministic results, ensure f read a bigger buffer.  */
+  if (lseek (fd, 0, SEEK_CUR) == 6)
+    {
+      fputs ("Sample file was not buffered after fgetc.\n", stderr);
+      fclose (f);
+      unlink ("test-fflush.txt");
+      return 1;
+    }
+  /* POSIX requires fflush-fseeko to set file offset of fd.  */
+  if (fflush (f) != 0 || fseeko (f, 0, SEEK_CUR) != 0)
+    {
+      fputs ("Failed to flush-fseeko sample file.\n", stderr);
+      fclose (f);
+      unlink ("test-fflush.txt");
+      return 1;
+    }
+  /* Check that offset is correct.  */
+  if (lseek (fd, 0, SEEK_CUR) != 6)
+    {
+      fprintf (stderr, "File offset is wrong after fseeko: %ld.\n",
+               (long) lseek (fd, 0, SEEK_CUR));
+      fclose (f);
+      unlink ("test-fflush.txt");
+      return 1;
+    }
+  if (ftell (f) != 6)
+    {
+      fprintf (stderr, "ftell result is wrong after fseeko: %ld.\n",
+               (long) ftell (f));
+      fclose (f);
+      unlink ("test-fflush.txt");
+      return 1;
+    }
+  /* Check that file reading resumes at correct location.  */
+  if (fgetc (f) != '7')
+    {
+      fputs ("Failed to read next byte after fseeko.\n", stderr);
+      fclose (f);
+      unlink ("test-fflush.txt");
+      return 1;
+    }
+  fclose (f);
+
+  /* Test that fflush() sets errno if someone else closes the stream
+     fd behind the back of stdio.  */
+  {
+    FILE *fp = fopen ("test-fflush.txt", "w");
+    ASSERT (fp != NULL);
+    fputc ('x', fp);
+    ASSERT (close (fileno (fp)) == 0);
+    errno = 0;
+    ASSERT (fflush (fp) == EOF);
+    ASSERT (errno == EBADF);
+    fclose (fp);
+  }
+
+  /* Test that fflush() sets errno if the stream was constructed with
+     an invalid file descriptor.  */
+  {
+    FILE *fp = fdopen (-1, "w");
+    if (fp != NULL)
+      {
+        fputc ('x', fp);
+        errno = 0;
+        ASSERT (fflush (fp) == EOF);
+        ASSERT (errno == EBADF);
+      }
+  }
+  {
+    FILE *fp;
+    close (99);
+    fp = fdopen (99, "w");
+    if (fp != NULL)
+      {
+        fputc ('x', fp);
+        errno = 0;
+        ASSERT (fflush (fp) == EOF);
+        ASSERT (errno == EBADF);
+      }
+  }
+
+  /* Clean up.  */
+  unlink ("test-fflush.txt");
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fflush2.c b/gnulib-tests/test-fflush2.c
new file mode 100644
index 0000000..acca0ae
--- /dev/null
+++ b/gnulib-tests/test-fflush2.c
@@ -0,0 +1,102 @@
+/* Test of POSIX compatible fflush() function.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "binary-io.h"
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  int c;
+
+  /* Avoid the well-known bugs of fflush() on streams in O_TEXT mode
+     on native Windows platforms.  */
+  set_binary_mode (0, O_BINARY);
+
+  if (argc > 1)
+    switch (argv[1][0])
+      {
+      case '1':
+        /* Check fflush after a backup ungetc() call.  This is case 1a in
+           terms of
+           <https://lists.gnu.org/r/bug-gnulib/2008-03/msg00131.html>,
+           according to the Austin Group's resolution on 2009-01-08.  */
+
+        c = fgetc (stdin);
+        ASSERT (c == '#');
+
+        c = fgetc (stdin);
+        ASSERT (c == '!');
+
+        /* Here the file-position indicator must be 2.  */
+
+        c = ungetc ('!', stdin);
+        ASSERT (c == '!');
+
+        fflush (stdin);
+
+        /* Here the file-position indicator must be 1.  */
+
+        c = fgetc (stdin);
+        ASSERT (c == '!');
+
+        c = fgetc (stdin);
+        ASSERT (c == '/');
+
+        return 0;
+
+      case '2':
+        /* Check fflush after a non-backup ungetc() call.  This is case 2a in
+           terms of
+           <https://lists.gnu.org/r/bug-gnulib/2008-03/msg00131.html>,
+           according to the Austin Group's resolution on 2009-01-08.  */
+        /* Check that fflush after a non-backup ungetc() call discards the
+           ungetc buffer.  This is mandated by POSIX
+           <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fflush.html>:
+             "...any characters pushed back onto the stream by ungetc()
+              or ungetwc() that have not subsequently been read from the
+              stream shall be discarded..."  */
+
+        c = fgetc (stdin);
+        ASSERT (c == '#');
+
+        c = fgetc (stdin);
+        ASSERT (c == '!');
+
+        /* Here the file-position indicator must be 2.  */
+
+        c = ungetc ('@', stdin);
+        ASSERT (c == '@');
+
+        fflush (stdin);
+
+        /* Here the file-position indicator must be 1.  */
+
+        c = fgetc (stdin);
+        ASSERT (c == '!');
+
+        c = fgetc (stdin);
+        ASSERT (c == '/');
+
+        return 0;
+      }
+
+  return 1;
+}
diff --git a/gnulib-tests/test-fflush2.sh b/gnulib-tests/test-fflush2.sh
new file mode 100755
index 0000000..0d8859d
--- /dev/null
+++ b/gnulib-tests/test-fflush2.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+# Execute the test only with seekable input stream.
+# The behaviour of fflush() on a non-seekable input stream is undefined.
+${CHECKER} ./test-fflush2${EXEEXT} 1 < "$srcdir/test-fflush2.sh" || exit $?
+${CHECKER} ./test-fflush2${EXEEXT} 2 < "$srcdir/test-fflush2.sh" || exit $?
+#cat "$srcdir/test-fflush2.sh" | ${CHECKER} ./test-fflush2${EXEEXT} || exit $?
+
+exit 0
diff --git a/gnulib-tests/test-fgetc.c b/gnulib-tests/test-fgetc.c
new file mode 100644
index 0000000..42db301
--- /dev/null
+++ b/gnulib-tests/test-fgetc.c
@@ -0,0 +1,99 @@
+/* Test of fgetc() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fgetc, int, (FILE *));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  const char *filename = "test-fgetc.txt";
+
+  /* We don't have an fgetc() function that installs an invalid parameter
+     handler so far.  So install that handler here, explicitly.  */
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
+    && MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
+  gl_msvc_inval_ensure_handler ();
+#endif
+
+  /* Prepare a file.  */
+  {
+    const char text[] = "hello world";
+    int fd = open (filename, O_RDWR | O_CREAT | O_TRUNC, 0600);
+    ASSERT (fd >= 0);
+    ASSERT (write (fd, text, sizeof (text)) == sizeof (text));
+    ASSERT (close (fd) == 0);
+  }
+
+  /* Test that fgetc() sets errno if someone else closes the stream
+     fd behind the back of stdio.  */
+  {
+    FILE *fp = fopen (filename, "r");
+    ASSERT (fp != NULL);
+    ASSERT (close (fileno (fp)) == 0);
+    errno = 0;
+    ASSERT (fgetc (fp) == EOF);
+    ASSERT (errno == EBADF);
+    ASSERT (ferror (fp));
+    fclose (fp);
+  }
+
+  /* Test that fgetc() sets errno if the stream was constructed with
+     an invalid file descriptor.  */
+  {
+    FILE *fp = fdopen (-1, "r");
+    if (fp != NULL)
+      {
+        errno = 0;
+        ASSERT (fgetc (fp) == EOF);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+  {
+    FILE *fp;
+    close (99);
+    fp = fdopen (99, "r");
+    if (fp != NULL)
+      {
+        errno = 0;
+        ASSERT (fgetc (fp) == EOF);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+
+  /* Clean up.  */
+  unlink (filename);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-file-has-acl-1.sh b/gnulib-tests/test-file-has-acl-1.sh
new file mode 100755
index 0000000..c789d22
--- /dev/null
+++ b/gnulib-tests/test-file-has-acl-1.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+# Test file-has-acl on the file system of /var/tmp, which usually is a local
+# file system.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+
+if test -d /var/tmp; then
+  TMPDIR=/var/tmp
+else
+  TMPDIR=/tmp
+fi
+test -d $TMPDIR || Exit 77
+export TMPDIR
+
+$BOURNE_SHELL "${srcdir}/test-file-has-acl.sh"
+
+Exit $?
diff --git a/gnulib-tests/test-file-has-acl-2.sh b/gnulib-tests/test-file-has-acl-2.sh
new file mode 100755
index 0000000..41561d6
--- /dev/null
+++ b/gnulib-tests/test-file-has-acl-2.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# Test file-has-acl on the file system of the build directory, which may be
+# a local file system or NFS mounted.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+
+TMPDIR=`pwd`
+export TMPDIR
+
+$BOURNE_SHELL "${srcdir}/test-file-has-acl.sh"
+
+Exit $?
diff --git a/gnulib-tests/test-file-has-acl.c b/gnulib-tests/test-file-has-acl.c
new file mode 100644
index 0000000..35f8658
--- /dev/null
+++ b/gnulib-tests/test-file-has-acl.c
@@ -0,0 +1,74 @@
+/* Test for presence of ACL.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include "acl.h"
+
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  const char *file;
+  struct stat statbuf;
+
+  ASSERT (argc == 2);
+
+  file = argv[1];
+
+  if (stat (file, &statbuf) < 0)
+    {
+      fprintf (stderr, "could not access file \"%s\"\n", file);
+      exit (EXIT_FAILURE);
+    }
+
+  /* Check against possible infinite loop in file_has_acl.  */
+#if HAVE_DECL_ALARM
+  /* Declare failure if test takes too long, by using default abort
+     caused by SIGALRM.  */
+  {
+    int alarm_value = 5;
+    signal (SIGALRM, SIG_DFL);
+    alarm (alarm_value);
+  }
+#endif
+
+#if USE_ACL
+  {
+    int ret = file_has_acl (file, &statbuf);
+    if (ret < 0)
+      {
+        fprintf (stderr, "could not access the ACL of file \"%s\"\n", file);
+        exit (EXIT_FAILURE);
+      }
+    printf ("%s\n", ret ? "yes" : "no");
+  }
+#else
+  printf ("no\n");
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-file-has-acl.sh b/gnulib-tests/test-file-has-acl.sh
new file mode 100755
index 0000000..09d18da
--- /dev/null
+++ b/gnulib-tests/test-file-has-acl.sh
@@ -0,0 +1,389 @@
+#!/bin/sh
+
+# Show all commands when run with environment variable VERBOSE=yes.
+test -z "$VERBOSE" || set -x
+
+test "$USE_ACL" = 0 &&
+  {
+    echo "Skipping test: insufficient ACL support"
+    exit 77
+  }
+
+# func_tmpdir
+# creates a temporary directory.
+# Sets variable
+# - tmp             pathname of freshly created temporary directory
+func_tmpdir ()
+{
+  # Use the environment variable TMPDIR, falling back to /tmp. This allows
+  # users to specify a different temporary directory, for example, if their
+  # /tmp is filled up or too small.
+  : ${TMPDIR=/tmp}
+  {
+    # Use the mktemp program if available. If not available, hide the error
+    # message.
+    tmp=`(umask 077 && mktemp -d "$TMPDIR/glXXXXXX") 2>/dev/null` &&
+    test -n "$tmp" && test -d "$tmp"
+  } ||
+  {
+    # Use a simple mkdir command. It is guaranteed to fail if the directory
+    # already exists.  $RANDOM is bash specific and expands to empty in shells
+    # other than bash, ksh and zsh.  Its use does not increase security;
+    # rather, it minimizes the probability of failure in a very cluttered /tmp
+    # directory.
+    tmp=$TMPDIR/gl$$-$RANDOM
+    (umask 077 && mkdir "$tmp")
+  } ||
+  {
+    echo "$0: cannot create a temporary directory in $TMPDIR" >&2
+    exit 1
+  }
+}
+
+func_tmpdir
+# builddir may already be set by the script that invokes this one.
+case "$builddir" in
+  '') builddir=`pwd` ;;
+  /* | ?:*) ;;
+  *) builddir=`pwd`/$builddir ;;
+esac
+cd "$builddir" ||
+  {
+    echo "$0: cannot determine build directory (unreadable parent dir?)" >&2
+    exit 1
+  }
+# Switch to a temporary directory, to increase the likelihood that ACLs are
+# supported on the current file system. (/tmp is usually locally mounted,
+# whereas the build dir is sometimes NFS-mounted.)
+( cd "$tmp"
+
+  # Prepare tmpfile0.
+  rm -f tmpfile[0-9] tmp.err
+  echo "Simple contents" > tmpfile0
+  chmod 600 tmpfile0
+
+  # Classification of the platform according to the programs available for
+  # manipulating ACLs.
+  # Possible values are:
+  #   linux, cygwin, freebsd, solaris, hpux, hpuxjfs, osf1, aix, macosx, irix, none.
+  # TODO: Support also native Windows platforms (mingw).
+  acl_flavor=none
+  if (getfacl tmpfile0 >/dev/null) 2>/dev/null; then
+    # Platforms with the getfacl and setfacl programs.
+    # Linux, FreeBSD, Solaris, Cygwin.
+    if (setfacl --help >/dev/null) 2>/dev/null; then
+      # Linux, Cygwin.
+      if (LC_ALL=C setfacl --help | grep ' --set-file' >/dev/null) 2>/dev/null; then
+        # Linux.
+        acl_flavor=linux
+      else
+        acl_flavor=cygwin
+      fi
+    else
+      # FreeBSD, Solaris.
+      if (LC_ALL=C setfacl 2>&1 | grep '\-x entries' >/dev/null) 2>/dev/null; then
+        # FreeBSD.
+        acl_flavor=freebsd
+      else
+        # Solaris.
+        acl_flavor=solaris
+      fi
+    fi
+  else
+    if (lsacl / >/dev/null) 2>/dev/null; then
+      # Platforms with the lsacl and chacl programs.
+      # HP-UX, sometimes also IRIX.
+      if (getacl tmpfile0 >/dev/null) 2>/dev/null; then
+        # HP-UX 11.11 or newer.
+        acl_flavor=hpuxjfs
+      else
+        # HP-UX 11.00.
+        acl_flavor=hpux
+      fi
+    else
+      if (getacl tmpfile0 >/dev/null) 2>/dev/null; then
+        # Tru64, NonStop Kernel.
+        if (getacl -m tmpfile0 >/dev/null) 2>/dev/null; then
+          # Tru64.
+          acl_flavor=osf1
+        else
+          # NonStop Kernel.
+          acl_flavor=nsk
+        fi
+      else
+        if (aclget tmpfile0 >/dev/null) 2>/dev/null; then
+          # AIX.
+          acl_flavor=aix
+        else
+          if (fsaclctl -v >/dev/null) 2>/dev/null; then
+            # Mac OS X.
+            acl_flavor=macosx
+          else
+            if test -f /sbin/chacl; then
+              # IRIX.
+              acl_flavor=irix
+            fi
+          fi
+        fi
+      fi
+    fi
+  fi
+
+  # func_test_file_has_acl file expected
+  # tests the result of the file_has_acl function on file, and checks that it
+  # matches the expected value.
+  func_test_file_has_acl ()
+  {
+    res=`${CHECKER} "$builddir"/test-file-has-acl${EXEEXT} "$1"`
+    test "$res" = "$2" || {
+      echo "file_has_acl(\"$1\") returned $res, expected $2" 1>&2
+      exit 1
+    }
+  }
+
+  # func_test_has_acl file expected
+  # tests the result of the file_has_acl function on file, and checks that it
+  # matches the expected value, also taking into account the system's 'ls'
+  # program.
+  case $acl_flavor in
+    freebsd | solaris | hpux | macosx)
+      case $acl_flavor in
+        freebsd | solaris | hpux) acl_ls_option="-ld" ;;
+        macosx)                   acl_ls_option="-lde" ;;
+      esac
+      func_test_has_acl ()
+      {
+        func_test_file_has_acl "$1" "$2"
+        case `/bin/ls $acl_ls_option "$1" | sed 1q` in
+          ??????????+*)
+            test "$2" = yes || {
+              echo "/bin/ls $acl_ls_option $1 shows an ACL, but expected $2" 1>&2
+              exit 1
+            }
+            ;;
+          ??????????" "*)
+            test "$2" = no || {
+              echo "/bin/ls $acl_ls_option $1 shows no ACL, but expected $2" 1>&2
+              exit 1
+            }
+            ;;
+        esac
+      }
+      ;;
+    irix)
+      func_test_has_acl ()
+      {
+        func_test_file_has_acl "$1" "$2"
+        case `/bin/ls -ldD "$1" | sed 1q` in
+          *" []")
+            test "$2" = no || {
+              echo "/bin/ls -ldD $1 shows no ACL, but expected $2" 1>&2
+              exit 1
+            }
+            ;;
+          *)
+            test "$2" = yes || {
+              echo "/bin/ls -ldD $1 shows an ACL, but expected $2" 1>&2
+              exit 1
+            }
+            ;;
+        esac
+      }
+      ;;
+    *)
+      func_test_has_acl ()
+      {
+        func_test_file_has_acl "$1" "$2"
+      }
+      ;;
+  esac
+
+  func_test_has_acl tmpfile0 no
+
+  mkdir tmpdir0
+  func_test_has_acl tmpdir0 no
+
+  if test $acl_flavor != none; then
+    # A POSIX compliant 'id' program.
+    if test -f /usr/xpg4/bin/id; then
+      ID=/usr/xpg4/bin/id
+    else
+      ID=id
+    fi
+    # Use a user and group id different from the current one, to avoid
+    # redundant/ambiguous ACLs.
+    myuid=`$ID -u`
+    mygid=`$ID -g`
+    auid=1
+    if test "$auid" = "$myuid"; then auid=2; fi
+    agid=1
+    if test "$agid" = "$mygid"; then agid=2; fi
+
+    case $acl_flavor in
+      linux | freebsd | solaris)
+
+        # Set an ACL for a user.
+        if setfacl -m user:$auid:1 tmpfile0; then
+
+          func_test_has_acl tmpfile0 yes
+
+          # Remove the ACL for the user.
+          case $acl_flavor in
+            linux)   setfacl -x user:$auid tmpfile0 ;;
+            freebsd) setfacl -x user:$auid:1 tmpfile0 ;;
+            *)       setfacl -d user:$auid:1 tmpfile0 ;;
+          esac
+
+          # On Linux and FreeBSD, the ACL for the mask is implicitly added.
+          # On Solaris, it is always there.
+          case $acl_flavor in
+            linux | freebsd) func_test_has_acl tmpfile0 yes ;;
+            *)               func_test_has_acl tmpfile0 no ;;
+          esac
+
+          # Remove the ACL for the mask, if it was implicitly added.
+          case $acl_flavor in
+            linux | freebsd) setfacl -x mask: tmpfile0 ;;
+            *)               setfacl -d mask: tmpfile0 ;;
+          esac
+
+          func_test_has_acl tmpfile0 no
+
+        fi
+        ;;
+
+      cygwin)
+
+        # Set an ACL for a group.
+        if setfacl -m group:0:1 tmpfile0; then
+
+          func_test_has_acl tmpfile0 yes
+
+          # Remove the ACL for the group.
+          setfacl -d group:0 tmpfile0
+
+          func_test_has_acl tmpfile0 no
+
+        fi
+        ;;
+
+      hpux | hpuxjfs)
+
+        # Set an ACL for a user.
+        orig=`lsacl tmpfile0 | sed -e 's/ tmpfile0$//'`
+        if chacl -r "${orig}($auid.%,--x)" tmpfile0; then
+
+          func_test_has_acl tmpfile0 yes
+
+          # Remove the ACL for the user.
+          chacl -d "($auid.%,--x)" tmpfile0
+
+          func_test_has_acl tmpfile0 no
+
+        else
+          if test $acl_flavor = hpuxjfs; then
+
+            # Set an ACL for a user.
+            setacl -m user:$auid:1 tmpfile0
+
+            func_test_has_acl tmpfile0 yes
+
+            # Remove the ACL for the user.
+            setacl -d user:$auid tmpfile0
+
+            func_test_has_acl tmpfile0 no
+
+          fi
+        fi
+        ;;
+
+      osf1)
+
+        # Set an ACL for a user.
+        setacl -u user:$auid:1 tmpfile0 2> tmp.err
+        cat tmp.err 1>&2
+        if grep 'Error:' tmp.err > /dev/null \
+           || grep 'Operation not supported' tmp.err > /dev/null; then
+          :
+        else
+
+          func_test_has_acl tmpfile0 yes
+
+          # Remove the ACL for the user.
+          setacl -x user:$auid:1 tmpfile0
+
+          func_test_has_acl tmpfile0 no
+
+        fi
+        ;;
+
+      nsk)
+
+        # Set an ACL for a user.
+        setacl -m user:$auid:1 tmpfile0
+
+        func_test_has_acl tmpfile0 yes
+
+        # Remove the ACL for the user.
+        setacl -d user:$auid tmpfile0
+
+        func_test_has_acl tmpfile0 no
+
+        ;;
+
+      aix)
+
+        # Set an ACL for a user.
+        { aclget tmpfile0 | sed -e 's/disabled$/enabled/'; echo "        permit --x u:$auid"; } | aclput tmpfile0
+        if aclget tmpfile0 | grep enabled > /dev/null; then
+
+          func_test_has_acl tmpfile0 yes
+
+          # Remove the ACL for the user.
+          aclget tmpfile0 | grep -v ' u:[^ ]*$' | aclput tmpfile0
+
+          func_test_has_acl tmpfile0 no
+
+        fi
+        ;;
+
+      macosx)
+
+        # Set an ACL for a user.
+        /bin/chmod +a "user:daemon allow execute" tmpfile0
+
+        func_test_has_acl tmpfile0 yes
+
+        # Remove the ACL for the user.
+        /bin/chmod -a "user:daemon allow execute" tmpfile0
+
+        func_test_has_acl tmpfile0 no
+
+        ;;
+
+      irix)
+
+        # Set an ACL for a user.
+        /sbin/chacl user::rw-,group::---,other::---,user:$auid:--x tmpfile0 2> tmp.err
+        cat tmp.err 1>&2
+        if test -s tmp.err; then :; else
+
+          func_test_has_acl tmpfile0 yes
+
+          # Remove the ACL for the user.
+          /sbin/chacl user::rw-,group::---,other::--- tmpfile0
+
+          func_test_has_acl tmpfile0 no
+
+        fi
+        ;;
+
+    esac
+  fi
+
+  rm -f tmpfile[0-9] tmp.err
+  rm -rf tmpdir0
+) || exit 1
+
+rm -rf "$tmp"
+exit 0
diff --git a/gnulib-tests/test-filenamecat.c b/gnulib-tests/test-filenamecat.c
new file mode 100644
index 0000000..a6f236e
--- /dev/null
+++ b/gnulib-tests/test-filenamecat.c
@@ -0,0 +1,85 @@
+/* Test of concatenation of two arbitrary file names.
+
+   Copyright (C) 1996-2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <config.h>
+
+#include "filenamecat.h"
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+int
+main (int argc _GL_UNUSED, char *argv[])
+{
+  static char const *const tests[][3] =
+    {
+      {"a", "b",   "a/b"},
+      {"a/", "b",  "a/b"},
+      {"a/", "/b", "a/b"},
+      {"a", "/b",  "a/b"},
+
+      {"/", "b",  "/b"},
+      {"/", "/b", "/./b"}, /* This result could be shorter.  */
+      {"/", "/",  "/./"},  /* This result could be shorter.  */
+      {"a", "/",  "a/"},   /* this might deserve a diagnostic */
+      {"/a", "/", "/a/"},  /* this might deserve a diagnostic */
+      {"a", "//b",  "a//b"},
+      {"", "a", "a"},  /* this might deserve a diagnostic */
+    };
+  unsigned int i;
+  bool fail = false;
+
+  for (i = 0; i < sizeof tests / sizeof tests[0]; i++)
+    {
+      char *base_in_result;
+      char const *const *t = tests[i];
+      char *res = file_name_concat (t[0], t[1], &base_in_result);
+      ptrdiff_t prefixlen = base_in_result - res;
+      size_t t0len = strlen (t[0]);
+      size_t reslen = strlen (res);
+      if (strcmp (res, t[2]) != 0)
+        {
+          fprintf (stderr, "test #%u: got %s, expected %s\n", i, res, t[2]);
+          fail = true;
+        }
+      if (strcmp (t[1], base_in_result) != 0)
+        {
+          fprintf (stderr, "test #%u: base %s != base_in_result %s\n",
+                   i, t[1], base_in_result);
+          fail = true;
+        }
+      if (! (0 <= prefixlen && prefixlen <= reslen))
+        {
+          fprintf (stderr, "test #%u: base_in_result is not in result\n", i);
+          fail = true;
+        }
+      if (reslen < t0len || memcmp (res, t[0], t0len) != 0)
+        {
+          fprintf (stderr, "test #%u: %s is not a prefix of %s\n",
+                   i, t[0], res);
+          fail = true;
+        }
+      free (res);
+    }
+  exit (fail ? EXIT_FAILURE : EXIT_SUCCESS);
+}
diff --git a/gnulib-tests/test-filevercmp.c b/gnulib-tests/test-filevercmp.c
new file mode 100644
index 0000000..8da27a2
--- /dev/null
+++ b/gnulib-tests/test-filevercmp.c
@@ -0,0 +1,120 @@
+/* Test of filevercmp() function.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "filevercmp.h"
+
+#include <stddef.h>
+
+#include "macros.h"
+
+/* set of well sorted examples */
+static const char *const examples[] =
+{
+  "",
+  ".",
+  "..",
+  ".0",
+  ".9",
+  ".A",
+  ".Z",
+  ".a~",
+  ".a",
+  ".b~",
+  ".b",
+  ".z",
+  ".zz~",
+  ".zz",
+  ".zz.~1~",
+  ".zz.0",
+  "0",
+  "9",
+  "A",
+  "Z",
+  "a~",
+  "a",
+  "a.b~",
+  "a.b",
+  "a.bc~",
+  "a.bc",
+  "b~",
+  "b",
+  "gcc-c++-10.fc9.tar.gz",
+  "gcc-c++-10.fc9.tar.gz.~1~",
+  "gcc-c++-10.fc9.tar.gz.~2~",
+  "gcc-c++-10.8.12-0.7rc2.fc9.tar.bz2",
+  "gcc-c++-10.8.12-0.7rc2.fc9.tar.bz2.~1~",
+  "glibc-2-0.1.beta1.fc10.rpm",
+  "glibc-common-5-0.2.beta2.fc9.ebuild",
+  "glibc-common-5-0.2b.deb",
+  "glibc-common-11b.ebuild",
+  "glibc-common-11-0.6rc2.ebuild",
+  "libstdc++-0.5.8.11-0.7rc2.fc10.tar.gz",
+  "libstdc++-4a.fc8.tar.gz",
+  "libstdc++-4.10.4.20040204svn.rpm",
+  "libstdc++-devel-3.fc8.ebuild",
+  "libstdc++-devel-3a.fc9.tar.gz",
+  "libstdc++-devel-8.fc8.deb",
+  "libstdc++-devel-8.6.2-0.4b.fc8",
+  "nss_ldap-1-0.2b.fc9.tar.bz2",
+  "nss_ldap-1-0.6rc2.fc8.tar.gz",
+  "nss_ldap-1.0-0.1a.tar.gz",
+  "nss_ldap-10beta1.fc8.tar.gz",
+  "nss_ldap-10.11.8.6.20040204cvs.fc10.ebuild",
+  "z",
+  "zz~",
+  "zz",
+  "zz.~1~",
+  "zz.0",
+  "#.b#",
+  NULL
+};
+
+int
+main (void)
+{
+  const char *const *i;
+
+  /* Following tests taken from test-strverscmp.c */
+  ASSERT (filevercmp ("", "") == 0);
+  ASSERT (filevercmp ("a", "a") == 0);
+  ASSERT (filevercmp ("a", "b") < 0);
+  ASSERT (filevercmp ("b", "a") > 0);
+  ASSERT (filevercmp ("a0", "a") > 0);
+  ASSERT (filevercmp ("00", "01") < 0);
+  ASSERT (filevercmp ("01", "010") < 0);
+  ASSERT (filevercmp ("9", "10") < 0);
+  ASSERT (filevercmp ("0a", "0") > 0);
+
+  /* compare each version string with each other - O(n^2) */
+  for (i = examples; *i; i++)
+    {
+      const char *const *j;
+      for (j = examples; *j; j++)
+        {
+          int result = filevercmp (*i, *j);
+          if (result < 0)
+            ASSERT (i < j);
+          else if (0 < result)
+            ASSERT (j < i);
+          else
+            ASSERT (i == j);
+        }
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-float.c b/gnulib-tests/test-float.c
new file mode 100644
index 0000000..f84959c
--- /dev/null
+++ b/gnulib-tests/test-float.c
@@ -0,0 +1,384 @@
+/* Test of <float.h> substitute.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include <float.h>
+
+#include "fpucw.h"
+#include "macros.h"
+
+/* Check that FLT_RADIX is a constant expression.  */
+int a[] = { FLT_RADIX };
+
+#if FLT_RADIX == 2
+
+/* Return 2^n.  */
+static float
+pow2f (int n)
+{
+  int k = n;
+  volatile float x = 1;
+  volatile float y = 2;
+  /* Invariant: 2^n == x * y^k.  */
+  if (k < 0)
+    {
+      y = 0.5f;
+      k = - k;
+    }
+  while (k > 0)
+    {
+      if (k != 2 * (k / 2))
+        {
+          x = x * y;
+          k = k - 1;
+        }
+      if (k == 0)
+        break;
+      y = y * y;
+      k = k / 2;
+    }
+  /* Now k == 0, hence x == 2^n.  */
+  return x;
+}
+
+/* Return 2^n.  */
+static double
+pow2d (int n)
+{
+  int k = n;
+  volatile double x = 1;
+  volatile double y = 2;
+  /* Invariant: 2^n == x * y^k.  */
+  if (k < 0)
+    {
+      y = 0.5;
+      k = - k;
+    }
+  while (k > 0)
+    {
+      if (k != 2 * (k / 2))
+        {
+          x = x * y;
+          k = k - 1;
+        }
+      if (k == 0)
+        break;
+      y = y * y;
+      k = k / 2;
+    }
+  /* Now k == 0, hence x == 2^n.  */
+  return x;
+}
+
+/* Return 2^n.  */
+static long double
+pow2l (int n)
+{
+  int k = n;
+  volatile long double x = 1;
+  volatile long double y = 2;
+  /* Invariant: 2^n == x * y^k.  */
+  if (k < 0)
+    {
+      y = 0.5L;
+      k = - k;
+    }
+  while (k > 0)
+    {
+      if (k != 2 * (k / 2))
+        {
+          x = x * y;
+          k = k - 1;
+        }
+      if (k == 0)
+        break;
+      y = y * y;
+      k = k / 2;
+    }
+  /* Now k == 0, hence x == 2^n.  */
+  return x;
+}
+
+/* ----------------------- Check macros for 'float' ----------------------- */
+
+/* Check that the FLT_* macros expand to constant expressions.  */
+int fb[] =
+  {
+    FLT_MANT_DIG, FLT_MIN_EXP, FLT_MAX_EXP,
+    FLT_DIG, FLT_MIN_10_EXP, FLT_MAX_10_EXP
+  };
+float fc[] = { FLT_EPSILON, FLT_MIN, FLT_MAX };
+
+static void
+test_float (void)
+{
+  /* Check that the value of FLT_MIN_EXP is well parenthesized.  */
+  ASSERT ((FLT_MIN_EXP % 101111) == (FLT_MIN_EXP) % 101111);
+
+  /* Check that the value of DBL_MIN_10_EXP is well parenthesized.  */
+  ASSERT ((FLT_MIN_10_EXP % 101111) == (FLT_MIN_10_EXP) % 101111);
+
+  /* Check that 'float' is as specified in IEEE 754.  */
+  ASSERT (FLT_MANT_DIG == 24);
+  ASSERT (FLT_MIN_EXP == -125);
+  ASSERT (FLT_MAX_EXP == 128);
+
+  /* Check the value of FLT_MIN_10_EXP.  */
+  ASSERT (FLT_MIN_10_EXP == - (int) (- (FLT_MIN_EXP - 1) * 0.30103));
+
+  /* Check the value of FLT_DIG.  */
+  ASSERT (FLT_DIG == (int) ((FLT_MANT_DIG - 1) * 0.30103));
+
+  /* Check the value of FLT_MIN_10_EXP.  */
+  ASSERT (FLT_MIN_10_EXP == - (int) (- (FLT_MIN_EXP - 1) * 0.30103));
+
+  /* Check the value of FLT_MAX_10_EXP.  */
+  ASSERT (FLT_MAX_10_EXP == (int) (FLT_MAX_EXP * 0.30103));
+
+  /* Check the value of FLT_MAX.  */
+  {
+    volatile float m = FLT_MAX;
+    int n;
+
+    ASSERT (m + m > m);
+    for (n = 0; n <= 2 * FLT_MANT_DIG; n++)
+      {
+        volatile float pow2_n = pow2f (n); /* 2^n */
+        volatile float x = m + (m / pow2_n);
+        if (x > m)
+          ASSERT (x + x == x);
+        else
+          ASSERT (!(x + x == x));
+      }
+  }
+
+  /* Check the value of FLT_MIN.  */
+  {
+    volatile float m = FLT_MIN;
+    volatile float x = pow2f (FLT_MIN_EXP - 1);
+    ASSERT (m == x);
+  }
+
+  /* Check the value of FLT_EPSILON.  */
+  {
+    volatile float e = FLT_EPSILON;
+    volatile float me;
+    int n;
+
+    me = 1.0f + e;
+    ASSERT (me > 1.0f);
+    ASSERT (me - 1.0f == e);
+    for (n = 0; n <= 2 * FLT_MANT_DIG; n++)
+      {
+        volatile float half_n = pow2f (- n); /* 2^-n */
+        volatile float x = me - half_n;
+        if (x < me)
+          ASSERT (x <= 1.0f);
+      }
+  }
+}
+
+/* ----------------------- Check macros for 'double' ----------------------- */
+
+/* Check that the DBL_* macros expand to constant expressions.  */
+int db[] =
+  {
+    DBL_MANT_DIG, DBL_MIN_EXP, DBL_MAX_EXP,
+    DBL_DIG, DBL_MIN_10_EXP, DBL_MAX_10_EXP
+  };
+double dc[] = { DBL_EPSILON, DBL_MIN, DBL_MAX };
+
+static void
+test_double (void)
+{
+  /* Check that the value of DBL_MIN_EXP is well parenthesized.  */
+  ASSERT ((DBL_MIN_EXP % 101111) == (DBL_MIN_EXP) % 101111);
+
+  /* Check that the value of DBL_MIN_10_EXP is well parenthesized.  */
+  ASSERT ((DBL_MIN_10_EXP % 101111) == (DBL_MIN_10_EXP) % 101111);
+
+  /* Check that 'double' is as specified in IEEE 754.  */
+  ASSERT (DBL_MANT_DIG == 53);
+  ASSERT (DBL_MIN_EXP == -1021);
+  ASSERT (DBL_MAX_EXP == 1024);
+
+  /* Check the value of DBL_MIN_10_EXP.  */
+  ASSERT (DBL_MIN_10_EXP == - (int) (- (DBL_MIN_EXP - 1) * 0.30103));
+
+  /* Check the value of DBL_DIG.  */
+  ASSERT (DBL_DIG == (int) ((DBL_MANT_DIG - 1) * 0.30103));
+
+  /* Check the value of DBL_MIN_10_EXP.  */
+  ASSERT (DBL_MIN_10_EXP == - (int) (- (DBL_MIN_EXP - 1) * 0.30103));
+
+  /* Check the value of DBL_MAX_10_EXP.  */
+  ASSERT (DBL_MAX_10_EXP == (int) (DBL_MAX_EXP * 0.30103));
+
+  /* Check the value of DBL_MAX.  */
+  {
+    volatile double m = DBL_MAX;
+    int n;
+
+    ASSERT (m + m > m);
+    for (n = 0; n <= 2 * DBL_MANT_DIG; n++)
+      {
+        volatile double pow2_n = pow2d (n); /* 2^n */
+        volatile double x = m + (m / pow2_n);
+        if (x > m)
+          ASSERT (x + x == x);
+        else
+          ASSERT (!(x + x == x));
+      }
+  }
+
+  /* Check the value of DBL_MIN.  */
+  {
+    volatile double m = DBL_MIN;
+    volatile double x = pow2d (DBL_MIN_EXP - 1);
+    ASSERT (m == x);
+  }
+
+  /* Check the value of DBL_EPSILON.  */
+  {
+    volatile double e = DBL_EPSILON;
+    volatile double me;
+    int n;
+
+    me = 1.0 + e;
+    ASSERT (me > 1.0);
+    ASSERT (me - 1.0 == e);
+    for (n = 0; n <= 2 * DBL_MANT_DIG; n++)
+      {
+        volatile double half_n = pow2d (- n); /* 2^-n */
+        volatile double x = me - half_n;
+        if (x < me)
+          ASSERT (x <= 1.0);
+      }
+  }
+}
+
+/* -------------------- Check macros for 'long double' -------------------- */
+
+/* Check that the LDBL_* macros expand to constant expressions.  */
+int lb[] =
+  {
+    LDBL_MANT_DIG, LDBL_MIN_EXP, LDBL_MAX_EXP,
+    LDBL_DIG, LDBL_MIN_10_EXP, LDBL_MAX_10_EXP
+  };
+long double lc1 = LDBL_EPSILON;
+long double lc2 = LDBL_MIN;
+#if 0 /* LDBL_MAX is not a constant expression on some platforms.  */
+long double lc3 = LDBL_MAX;
+#endif
+
+static void
+test_long_double (void)
+{
+  /* Check that the value of LDBL_MIN_EXP is well parenthesized.  */
+  ASSERT ((LDBL_MIN_EXP % 101111) == (LDBL_MIN_EXP) % 101111);
+
+  /* Check that the value of LDBL_MIN_10_EXP is well parenthesized.  */
+  ASSERT ((LDBL_MIN_10_EXP % 101111) == (LDBL_MIN_10_EXP) % 101111);
+
+  /* Check that 'long double' is at least as wide as 'double'.  */
+  ASSERT (LDBL_MANT_DIG >= DBL_MANT_DIG);
+  ASSERT (LDBL_MIN_EXP - LDBL_MANT_DIG <= DBL_MIN_EXP - DBL_MANT_DIG);
+  ASSERT (LDBL_MAX_EXP >= DBL_MAX_EXP);
+
+  /* Check the value of LDBL_DIG.  */
+  ASSERT (LDBL_DIG == (int)((LDBL_MANT_DIG - 1) * 0.30103));
+
+  /* Check the value of LDBL_MIN_10_EXP.  */
+  ASSERT (LDBL_MIN_10_EXP == - (int) (- (LDBL_MIN_EXP - 1) * 0.30103));
+
+  /* Check the value of LDBL_MAX_10_EXP.  */
+  ASSERT (LDBL_MAX_10_EXP == (int) (LDBL_MAX_EXP * 0.30103));
+
+  /* Check the value of LDBL_MAX.  */
+  {
+    volatile long double m = LDBL_MAX;
+    int n;
+
+    ASSERT (m + m > m);
+    for (n = 0; n <= 2 * LDBL_MANT_DIG; n++)
+      {
+        volatile long double pow2_n = pow2l (n); /* 2^n */
+        volatile long double x = m + (m / pow2_n);
+        if (x > m)
+          ASSERT (x + x == x);
+        else
+          ASSERT (!(x + x == x));
+      }
+  }
+
+  /* Check the value of LDBL_MIN.  */
+  {
+    volatile long double m = LDBL_MIN;
+    volatile long double x = pow2l (LDBL_MIN_EXP - 1);
+    ASSERT (m == x);
+  }
+
+  /* Check the value of LDBL_EPSILON.  */
+  {
+    volatile long double e = LDBL_EPSILON;
+    volatile long double me;
+    int n;
+
+    me = 1.0L + e;
+    ASSERT (me > 1.0L);
+    ASSERT (me - 1.0L == e);
+    for (n = 0; n <= 2 * LDBL_MANT_DIG; n++)
+      {
+        volatile long double half_n = pow2l (- n); /* 2^-n */
+        volatile long double x = me - half_n;
+        if (x < me)
+          ASSERT (x <= 1.0L);
+      }
+  }
+}
+
+int
+main ()
+{
+  test_float ();
+  test_double ();
+
+  {
+    DECL_LONG_DOUBLE_ROUNDING
+
+    BEGIN_LONG_DOUBLE_ROUNDING ();
+
+    test_long_double ();
+
+    END_LONG_DOUBLE_ROUNDING ();
+  }
+
+  return 0;
+}
+
+#else
+
+int
+main ()
+{
+  fprintf (stderr, "Skipping test: FLT_RADIX is not 2.\n");
+  return 77;
+}
+
+#endif
diff --git a/gnulib-tests/test-fnmatch-h.c b/gnulib-tests/test-fnmatch-h.c
new file mode 100644
index 0000000..f44d06c
--- /dev/null
+++ b/gnulib-tests/test-fnmatch-h.c
@@ -0,0 +1,31 @@
+/* Test of <fnmatch.h> substitute.
+   Copyright (C) 2018-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2018.  */
+
+#include <config.h>
+
+#include <fnmatch.h>
+
+/* Check that the various FNM_* macros are defined.  */
+int ret = FNM_NOMATCH;
+int options[] = { FNM_PATHNAME, FNM_PERIOD, FNM_NOESCAPE };
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-fnmatch.c b/gnulib-tests/test-fnmatch.c
new file mode 100644
index 0000000..a094c1f
--- /dev/null
+++ b/gnulib-tests/test-fnmatch.c
@@ -0,0 +1,56 @@
+/* Test of fnmatch string matching function.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson <simon@josefsson.org>, 2009.  */
+
+#include <config.h>
+
+#include <fnmatch.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fnmatch, int, (char const *, char const *, int));
+
+#include "macros.h"
+
+int
+main ()
+{
+  int res;
+
+  ASSERT (res = fnmatch ("", "", 0) == 0);
+
+  ASSERT (res = fnmatch ("*", "", 0) == 0);
+  ASSERT (res = fnmatch ("*", "foo", 0) == 0);
+  ASSERT (res = fnmatch ("*", "bar", 0) == 0);
+  ASSERT (res = fnmatch ("*", "*", 0) == 0);
+  ASSERT (res = fnmatch ("**", "f", 0) == 0);
+  ASSERT (res = fnmatch ("**", "foo.txt", 0) == 0);
+  ASSERT (res = fnmatch ("*.*", "foo.txt", 0) == 0);
+
+  ASSERT (res = fnmatch ("foo*.txt", "foobar.txt", 0) == 0);
+
+  ASSERT (res = fnmatch ("foo.txt", "foo.txt", 0) == 0);
+  ASSERT (res = fnmatch ("foo\\.txt", "foo.txt", 0) == 0);
+  ASSERT (res = fnmatch ("foo\\.txt", "foo.txt", FNM_NOESCAPE) == FNM_NOMATCH);
+
+  /* Verify that an unmatched [ is treated as a literal, as POSIX
+     requires.  This test ensures that glibc Bugzilla bug #12378 stays
+     fixed.
+   */
+  ASSERT (res = fnmatch ("[/b", "[/b", 0) == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fopen-safer.c b/gnulib-tests/test-fopen-safer.c
new file mode 100644
index 0000000..b041fc1
--- /dev/null
+++ b/gnulib-tests/test-fopen-safer.c
@@ -0,0 +1,31 @@
+/* Test of opening a file stream.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "stdio--.h"
+
+#define BASE "test-fopen-safer.t"
+
+#include "test-fopen.h"
+
+int
+main (void)
+{
+  return test_fopen ();
+}
diff --git a/gnulib-tests/test-fopen.c b/gnulib-tests/test-fopen.c
new file mode 100644
index 0000000..36d2529
--- /dev/null
+++ b/gnulib-tests/test-fopen.c
@@ -0,0 +1,34 @@
+/* Test of opening a file stream.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fopen, FILE *, (char const *, char const *));
+
+#define BASE "test-fopen.t"
+
+#include "test-fopen.h"
+
+int
+main (void)
+{
+  return test_fopen ();
+}
diff --git a/gnulib-tests/test-fopen.h b/gnulib-tests/test-fopen.h
new file mode 100644
index 0000000..fb036af
--- /dev/null
+++ b/gnulib-tests/test-fopen.h
@@ -0,0 +1,73 @@
+/* Test of opening a file stream.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+/* Include <config.h> and a form of <stdio.h> first.  */
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+/* Test fopen.  Assumes BASE is defined.  */
+
+static int
+test_fopen (void)
+{
+  FILE *f;
+  /* Remove anything from prior partial run.  */
+  unlink (BASE "file");
+
+  /* Read requires existing file.  */
+  errno = 0;
+  ASSERT (fopen (BASE "file", "r") == NULL);
+  ASSERT (errno == ENOENT);
+
+  /* Write can create a file.  */
+  f = fopen (BASE "file", "w");
+  ASSERT (f);
+  ASSERT (fclose (f) == 0);
+
+  /* Trailing slash is invalid on non-directory.  */
+  errno = 0;
+  ASSERT (fopen (BASE "file/", "r") == NULL);
+  ASSERT (errno == ENOTDIR || errno == EISDIR || errno == EINVAL);
+
+  /* Cannot create a directory.  */
+  errno = 0;
+  ASSERT (fopen ("nonexist.ent/", "w") == NULL);
+  ASSERT (errno == ENOTDIR || errno == EISDIR || errno == ENOENT
+          || errno == EINVAL);
+
+  /* Directories cannot be opened for writing.  */
+  errno = 0;
+  ASSERT (fopen (".", "w") == NULL);
+  ASSERT (errno == EISDIR || errno == EINVAL || errno == EACCES);
+
+  /* /dev/null must exist, and be writable.  */
+  f = fopen ("/dev/null", "r");
+  ASSERT (f);
+  ASSERT (fclose (f) == 0);
+  f = fopen ("/dev/null", "w");
+  ASSERT (f);
+  ASSERT (fclose (f) == 0);
+
+  /* Cleanup.  */
+  ASSERT (unlink (BASE "file") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fpending.c b/gnulib-tests/test-fpending.c
new file mode 100644
index 0000000..a0bdd96
--- /dev/null
+++ b/gnulib-tests/test-fpending.c
@@ -0,0 +1,41 @@
+/* Ensure that __fpending works.
+
+   Copyright (C) 2004, 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+   Written by Jim Meyering.  */
+
+#include <config.h>
+
+#include "fpending.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  ASSERT (__fpending (stdout) == 0);
+
+  fputs ("foo", stdout);
+  ASSERT (__fpending (stdout) == 3);
+
+  fflush (stdout);
+  ASSERT (__fpending (stdout) == 0);
+
+  exit (0);
+}
diff --git a/gnulib-tests/test-fpending.sh b/gnulib-tests/test-fpending.sh
new file mode 100755
index 0000000..abe7d83
--- /dev/null
+++ b/gnulib-tests/test-fpending.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+tmpfile=
+trap 'rm -fr $tmpfile' 1 2 3 15
+
+tmpfile=test-fpending.t
+
+${CHECKER} ./test-fpending${EXEEXT} > $tmpfile || exit 1
+
+rm -fr $tmpfile
+
+exit 0
diff --git a/gnulib-tests/test-fprintf-posix.h b/gnulib-tests/test-fprintf-posix.h
new file mode 100644
index 0000000..8974ed6
--- /dev/null
+++ b/gnulib-tests/test-fprintf-posix.h
@@ -0,0 +1,153 @@
+/* Test of POSIX compatible vsprintf() and sprintf() functions.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include "infinity.h"
+
+static void
+test_function (int (*my_fprintf) (FILE *, const char *, ...))
+{
+  /* Here we don't test output that may be platform dependent.
+     The bulk of the tests is done as part of the 'vasnprintf-posix' module.  */
+
+  /* Test support of size specifiers as in C99.  */
+
+  my_fprintf (stdout, "%ju %d\n", (uintmax_t) 12345671, 33, 44, 55);
+
+  my_fprintf (stdout, "%zu %d\n", (size_t) 12345672, 33, 44, 55);
+
+  my_fprintf (stdout, "%tu %d\n", (ptrdiff_t) 12345673, 33, 44, 55);
+
+  /* Test the support of the 'a' and 'A' conversion specifier for hexadecimal
+     output of floating-point numbers.  */
+
+  /* Positive zero.  */
+  my_fprintf (stdout, "%a %d\n", 0.0, 33, 44, 55);
+
+  /* Positive infinity.  */
+  my_fprintf (stdout, "%a %d\n", Infinityd (), 33, 44, 55);
+
+  /* Negative infinity.  */
+  my_fprintf (stdout, "%a %d\n", - Infinityd (), 33, 44, 55);
+
+  /* FLAG_ZERO with infinite number.  */
+  my_fprintf (stdout, "%010a %d\n", Infinityd (), 33, 44, 55);
+
+  /* Test the support of the %f format directive.  */
+
+  /* A positive number.  */
+  my_fprintf (stdout, "%f %d\n", 12.75, 33, 44, 55);
+
+  /* A larger positive number.  */
+  my_fprintf (stdout, "%f %d\n", 1234567.0, 33, 44, 55);
+
+  /* A negative number.  */
+  my_fprintf (stdout, "%f %d\n", -0.03125, 33, 44, 55);
+
+  /* Positive zero.  */
+  my_fprintf (stdout, "%f %d\n", 0.0, 33, 44, 55);
+
+  /* FLAG_ZERO.  */
+  my_fprintf (stdout, "%015f %d\n", 1234.0, 33, 44, 55);
+
+  /* Precision.  */
+  my_fprintf (stdout, "%.f %d\n", 1234.0, 33, 44, 55);
+
+  /* Precision with no rounding.  */
+  my_fprintf (stdout, "%.2f %d\n", 999.95, 33, 44, 55);
+
+  /* Precision with rounding.  */
+  my_fprintf (stdout, "%.2f %d\n", 999.996, 33, 44, 55);
+
+  /* A positive number.  */
+  my_fprintf (stdout, "%Lf %d\n", 12.75L, 33, 44, 55);
+
+  /* A larger positive number.  */
+  my_fprintf (stdout, "%Lf %d\n", 1234567.0L, 33, 44, 55);
+
+  /* A negative number.  */
+  my_fprintf (stdout, "%Lf %d\n", -0.03125L, 33, 44, 55);
+
+  /* Positive zero.  */
+  my_fprintf (stdout, "%Lf %d\n", 0.0L, 33, 44, 55);
+
+  /* FLAG_ZERO.  */
+  my_fprintf (stdout, "%015Lf %d\n", 1234.0L, 33, 44, 55);
+
+  /* Precision.  */
+  my_fprintf (stdout, "%.Lf %d\n", 1234.0L, 33, 44, 55);
+
+  /* Precision with no rounding.  */
+  my_fprintf (stdout, "%.2Lf %d\n", 999.95L, 33, 44, 55);
+
+  /* Precision with rounding.  */
+  my_fprintf (stdout, "%.2Lf %d\n", 999.996L, 33, 44, 55);
+
+  /* Test the support of the %F format directive.  */
+
+  /* A positive number.  */
+  my_fprintf (stdout, "%F %d\n", 12.75, 33, 44, 55);
+
+  /* A larger positive number.  */
+  my_fprintf (stdout, "%F %d\n", 1234567.0, 33, 44, 55);
+
+  /* A negative number.  */
+  my_fprintf (stdout, "%F %d\n", -0.03125, 33, 44, 55);
+
+  /* Positive zero.  */
+  my_fprintf (stdout, "%F %d\n", 0.0, 33, 44, 55);
+
+  /* FLAG_ZERO.  */
+  my_fprintf (stdout, "%015F %d\n", 1234.0, 33, 44, 55);
+
+  /* Precision.  */
+  my_fprintf (stdout, "%.F %d\n", 1234.0, 33, 44, 55);
+
+  /* Precision with no rounding.  */
+  my_fprintf (stdout, "%.2F %d\n", 999.95, 33, 44, 55);
+
+  /* Precision with rounding.  */
+  my_fprintf (stdout, "%.2F %d\n", 999.996, 33, 44, 55);
+
+  /* A positive number.  */
+  my_fprintf (stdout, "%LF %d\n", 12.75L, 33, 44, 55);
+
+  /* A larger positive number.  */
+  my_fprintf (stdout, "%LF %d\n", 1234567.0L, 33, 44, 55);
+
+  /* A negative number.  */
+  my_fprintf (stdout, "%LF %d\n", -0.03125L, 33, 44, 55);
+
+  /* Positive zero.  */
+  my_fprintf (stdout, "%LF %d\n", 0.0L, 33, 44, 55);
+
+  /* FLAG_ZERO.  */
+  my_fprintf (stdout, "%015LF %d\n", 1234.0L, 33, 44, 55);
+
+  /* Precision.  */
+  my_fprintf (stdout, "%.LF %d\n", 1234.0L, 33, 44, 55);
+
+  /* Precision with no rounding.  */
+  my_fprintf (stdout, "%.2LF %d\n", 999.95L, 33, 44, 55);
+
+  /* Precision with rounding.  */
+  my_fprintf (stdout, "%.2LF %d\n", 999.996L, 33, 44, 55);
+
+  /* Test the support of the POSIX/XSI format strings with positions.  */
+
+  my_fprintf (stdout, "%2$d %1$d\n", 33, 55);
+}
diff --git a/gnulib-tests/test-fpurge.c b/gnulib-tests/test-fpurge.c
new file mode 100644
index 0000000..3bca176
--- /dev/null
+++ b/gnulib-tests/test-fpurge.c
@@ -0,0 +1,134 @@
+/* Test of fpurge() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+/* None of the files accessed by this test are large, so disable the
+   fseek link warning if we are not using the gnulib fseek module.  */
+#define _GL_NO_LARGE_FILES
+#include <stdio.h>
+
+#include <string.h>
+
+#include "macros.h"
+
+#define TESTFILE "t-fpurge.tmp"
+
+int
+main (void)
+{
+  int check_filepos;
+
+  for (check_filepos = 0; check_filepos <= 1; check_filepos++)
+    {
+      FILE *fp;
+
+      /* Create a file with some contents.  */
+      fp = fopen (TESTFILE, "w");
+      if (fp == NULL)
+        goto skip;
+      if (fwrite ("foobarsh", 1, 8, fp) < 8)
+        goto skip;
+      if (fclose (fp))
+        goto skip;
+
+      /* The file's contents is now "foobarsh".  */
+
+      /* Open it in read-write mode.  */
+      fp = fopen (TESTFILE, "r+");
+      if (fp == NULL)
+        goto skip;
+      if (fseek (fp, 3, SEEK_CUR))
+        goto skip;
+      if (fwrite ("g", 1, 1, fp) < 1)
+        goto skip;
+      if (fflush (fp))
+        goto skip;
+      if (fwrite ("bz", 1, 2, fp) < 2)
+        goto skip;
+      /* Discard pending write.  */
+      ASSERT (fpurge (fp) == 0);
+      /* Verify that when discarding pending output, the file position is set
+         back to where it was before the write calls.  */
+      if (check_filepos)
+        ASSERT (ftell (fp) == 4);
+      ASSERT (fclose (fp) == 0);
+
+      /* Open it in read-only mode.  */
+      fp = fopen (TESTFILE, "r");
+      if (fp == NULL)
+        goto skip;
+      /* Verify that the pending writes before the fpurge were really
+         discarded.  */
+      {
+        char buf[8];
+        if (fread (buf, 1, 7, fp) < 7)
+          goto skip;
+        ASSERT (memcmp (buf, "foogars", 7) == 0);
+      }
+      /* Discard the buffered 'h'.  */
+      if (check_filepos)
+        ASSERT (ftell (fp) == 7);
+      ASSERT (fpurge (fp) == 0);
+      /* Verify that when discarding pending input, the file position is
+         advanced to match the end of the previously read input.  */
+      if (check_filepos)
+        ASSERT (ftell (fp) == 8);
+      ASSERT (getc (fp) == EOF);
+      ASSERT (fclose (fp) == 0);
+
+      /* The file's contents is now "foogarsh".  */
+
+      /* Ensure that purging a read does not corrupt subsequent writes.  */
+      fp = fopen (TESTFILE, "r+");
+      if (fp == NULL)
+        goto skip;
+      if (fseek (fp, -1, SEEK_END))
+        goto skip;
+      ASSERT (getc (fp) == 'h');
+      ASSERT (getc (fp) == EOF);
+      if (check_filepos)
+        ASSERT (ftell (fp) == 8);
+      ASSERT (fpurge (fp) == 0);
+      if (check_filepos)
+        ASSERT (ftell (fp) == 8);
+      ASSERT (putc ('!', fp) == '!');
+      if (check_filepos)
+        ASSERT (ftell (fp) == 9);
+      ASSERT (fclose (fp) == 0);
+      fp = fopen (TESTFILE, "r");
+      if (fp == NULL)
+        goto skip;
+      {
+        char buf[10];
+        ASSERT (fread (buf, 1, 10, fp) == 9);
+        ASSERT (memcmp (buf, "foogarsh!", 9) == 0);
+      }
+      ASSERT (fclose (fp) == 0);
+
+      /* The file's contents is now "foogarsh!".  */
+    }
+
+  remove (TESTFILE);
+  return 0;
+
+ skip:
+  fprintf (stderr, "Skipping test: prerequisite file operations failed.\n");
+  remove (TESTFILE);
+  return 77;
+}
diff --git a/gnulib-tests/test-fputc.c b/gnulib-tests/test-fputc.c
new file mode 100644
index 0000000..e8e25b8
--- /dev/null
+++ b/gnulib-tests/test-fputc.c
@@ -0,0 +1,93 @@
+/* Test of fputc() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fputc, int, (int, FILE *));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  const char *filename = "test-fputc.txt";
+
+  /* We don't have an fputc() function that installs an invalid parameter
+     handler so far.  So install that handler here, explicitly.  */
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
+    && MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
+  gl_msvc_inval_ensure_handler ();
+#endif
+
+  /* Test that fputc() on an unbuffered stream sets errno if someone else
+     closes the stream fd behind the back of stdio.  */
+  {
+    FILE *fp = fopen (filename, "w");
+    ASSERT (fp != NULL);
+    setvbuf (fp, NULL, _IONBF, 0);
+    ASSERT (close (fileno (fp)) == 0);
+    errno = 0;
+    ASSERT (fputc ('x', fp) == EOF);
+    ASSERT (errno == EBADF);
+    ASSERT (ferror (fp));
+    fclose (fp);
+  }
+
+  /* Test that fputc() on an unbuffered stream sets errno if the stream
+     was constructed with an invalid file descriptor.  */
+  {
+    FILE *fp = fdopen (-1, "w");
+    if (fp != NULL)
+      {
+        setvbuf (fp, NULL, _IONBF, 0);
+        errno = 0;
+        ASSERT (fputc ('x', fp) == EOF);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+  {
+    FILE *fp;
+    close (99);
+    fp = fdopen (99, "w");
+    if (fp != NULL)
+      {
+        setvbuf (fp, NULL, _IONBF, 0);
+        errno = 0;
+        ASSERT (fputc ('x', fp) == EOF);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+
+  /* Clean up.  */
+  unlink (filename);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fread.c b/gnulib-tests/test-fread.c
new file mode 100644
index 0000000..08b3a11
--- /dev/null
+++ b/gnulib-tests/test-fread.c
@@ -0,0 +1,102 @@
+/* Test of fread() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fread, size_t, (void *, size_t, size_t, FILE *));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  const char *filename = "test-fread.txt";
+
+  /* We don't have an fread() function that installs an invalid parameter
+     handler so far.  So install that handler here, explicitly.  */
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
+    && MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
+  gl_msvc_inval_ensure_handler ();
+#endif
+
+  /* Prepare a file.  */
+  {
+    const char text[] = "hello world";
+    int fd = open (filename, O_RDWR | O_CREAT | O_TRUNC, 0600);
+    ASSERT (fd >= 0);
+    ASSERT (write (fd, text, sizeof (text)) == sizeof (text));
+    ASSERT (close (fd) == 0);
+  }
+
+  /* Test that fread() sets errno if someone else closes the stream
+     fd behind the back of stdio.  */
+  {
+    FILE *fp = fopen (filename, "r");
+    char buf[5];
+    ASSERT (fp != NULL);
+    ASSERT (close (fileno (fp)) == 0);
+    errno = 0;
+    ASSERT (fread (buf, 1, sizeof (buf), fp) == 0);
+    ASSERT (errno == EBADF);
+    ASSERT (ferror (fp));
+    fclose (fp);
+  }
+
+  /* Test that fread() sets errno if the stream was constructed with
+     an invalid file descriptor.  */
+  {
+    FILE *fp = fdopen (-1, "r");
+    if (fp != NULL)
+      {
+        char buf[1];
+        errno = 0;
+        ASSERT (fread (buf, 1, 1, fp) == 0);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+  {
+    FILE *fp;
+    close (99);
+    fp = fdopen (99, "r");
+    if (fp != NULL)
+      {
+        char buf[1];
+        errno = 0;
+        ASSERT (fread (buf, 1, 1, fp) == 0);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+
+  /* Clean up.  */
+  unlink (filename);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-freadahead.c b/gnulib-tests/test-freadahead.c
new file mode 100644
index 0000000..a7042f1
--- /dev/null
+++ b/gnulib-tests/test-freadahead.c
@@ -0,0 +1,77 @@
+/* Test of freadahead() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "freadahead.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  int nbytes = atoi (argv[1]);
+  if (nbytes > 0)
+    {
+      void *buf = malloc (nbytes);
+      ASSERT (fread (buf, 1, nbytes, stdin) == nbytes);
+      free (buf);
+    }
+
+  if (nbytes == 0)
+    ASSERT (freadahead (stdin) == 0);
+  else
+    {
+      if (lseek (0, 0, SEEK_CUR) == nbytes)
+        /* An unbuffered stdio, such as BeOS or on uClibc compiled without
+           __STDIO_BUFFERS.  */
+        ASSERT (freadahead (stdin) == 0);
+      else
+        {
+          /* Normal buffered stdio.  */
+          size_t buffered;
+          int c, c2;
+
+          ASSERT (freadahead (stdin) != 0);
+          buffered = freadahead (stdin);
+
+          c = fgetc (stdin);
+          ASSERT (freadahead (stdin) == buffered - 1);
+          ungetc (c, stdin);
+          ASSERT (freadahead (stdin) == buffered);
+          c2 = fgetc (stdin);
+          ASSERT (c2 == c);
+          ASSERT (freadahead (stdin) == buffered - 1);
+
+          c = '@';
+          ungetc (c, stdin);
+          ASSERT (freadahead (stdin) == buffered);
+          c2 = fgetc (stdin);
+          ASSERT (c2 == c);
+          ASSERT (freadahead (stdin) == buffered - 1);
+        }
+    }
+
+  /* Free memory allocated during ungetc().  */
+  fclose (stdin);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-freadahead.sh b/gnulib-tests/test-freadahead.sh
new file mode 100755
index 0000000..f420000
--- /dev/null
+++ b/gnulib-tests/test-freadahead.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+${CHECKER} ./test-freadahead${EXEEXT} 0 < "$srcdir/test-freadahead.sh" || exit 1
+${CHECKER} ./test-freadahead${EXEEXT} 5 < "$srcdir/test-freadahead.sh" || exit 1
+exit 0
diff --git a/gnulib-tests/test-freading.c b/gnulib-tests/test-freading.c
new file mode 100644
index 0000000..f2abd1f
--- /dev/null
+++ b/gnulib-tests/test-freading.c
@@ -0,0 +1,130 @@
+/* Test of freading() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+/* None of the files accessed by this test are large, so disable the
+   fseek link warning if we are not using the gnulib fseek module.  */
+#define _GL_NO_LARGE_FILES
+#include "freading.h"
+
+#include <stdio.h>
+
+#include "macros.h"
+
+#define TESTFILE "t-freading.tmp"
+
+int
+main (void)
+{
+  FILE *fp;
+
+  /* Create a file with some contents.  Write-only file is never reading.  */
+  fp = fopen (TESTFILE, "w");
+  ASSERT (fp);
+  ASSERT (!freading (fp));
+  ASSERT (fwrite ("foobarsh", 1, 8, fp) == 8);
+  ASSERT (!freading (fp));
+  ASSERT (fclose (fp) == 0);
+
+  /* Open it in read-only mode.  Read-only file is always reading.  */
+  fp = fopen (TESTFILE, "r");
+  ASSERT (fp);
+  ASSERT (freading (fp));
+  ASSERT (fgetc (fp) == 'f');
+  ASSERT (freading (fp));
+  ASSERT (fseek (fp, 2, SEEK_CUR) == 0);
+  ASSERT (freading (fp));
+  ASSERT (fgetc (fp) == 'b');
+  ASSERT (freading (fp));
+  fflush (fp);
+  ASSERT (freading (fp));
+  ASSERT (fgetc (fp) == 'a');
+  ASSERT (freading (fp));
+  ASSERT (fseek (fp, 0, SEEK_END) == 0);
+  ASSERT (freading (fp));
+  ASSERT (fclose (fp) == 0);
+
+  /* Open it in read-write mode.  POSIX requires a reposition (fseek,
+     fsetpos, rewind) or EOF when transitioning from read to write;
+     freading is only deterministic after input or output, but this
+     test case should be portable even on open, after reposition, and
+     at EOF.  */
+  /* First a scenario with only fgetc, fseek, fputc.  */
+  fp = fopen (TESTFILE, "r+");
+  ASSERT (fp);
+  ASSERT (!freading (fp));
+  ASSERT (fgetc (fp) == 'f');
+  ASSERT (freading (fp));
+  ASSERT (fseek (fp, 2, SEEK_CUR) ==  0);
+  /* freading (fp) is undefined here, but fwriting (fp) is false.  */
+  ASSERT (fgetc (fp) == 'b');
+  ASSERT (freading (fp));
+  /* This fseek call is necessary when switching from reading to writing.
+     See the description of fopen(), ISO C 99 7.19.5.3.(6).  */
+  ASSERT (fseek (fp, 0, SEEK_CUR) == 0);
+  /* freading (fp) is undefined here, but fwriting (fp) is false.  */
+  ASSERT (fputc ('x', fp) == 'x');
+  ASSERT (!freading (fp));
+  ASSERT (fseek (fp, 0, SEEK_END) == 0);
+  /* freading (fp) is undefined here, because on some implementations (e.g.
+     glibc) fseek causes a buffer to be read.
+     fwriting (fp) is undefined as well.  */
+  ASSERT (fclose (fp) == 0);
+
+  /* Open it in read-write mode.  POSIX requires a reposition (fseek,
+     fsetpos, rewind) or EOF when transitioning from read to write;
+     freading is only deterministic after input or output, but this
+     test case should be portable even on open, after reposition, and
+     at EOF.  */
+  /* Here a scenario that includes fflush.  */
+  fp = fopen (TESTFILE, "r+");
+  ASSERT (fp);
+  ASSERT (!freading (fp));
+  ASSERT (fgetc (fp) == 'f');
+  ASSERT (freading (fp));
+  ASSERT (fseek (fp, 2, SEEK_CUR) == 0);
+  /* freading (fp) is undefined here, but fwriting (fp) is false.  */
+  ASSERT (fgetc (fp) == 'b');
+  ASSERT (freading (fp));
+  fflush (fp);
+  /* freading (fp) is undefined here, but fwriting (fp) is false.  */
+  ASSERT (fgetc (fp) == 'x');
+  ASSERT (freading (fp));
+  /* This fseek call is necessary when switching from reading to writing.
+     See the description of fopen(), ISO C 99 7.19.5.3.(6).  */
+  ASSERT (fseek (fp, 0, SEEK_CUR) == 0);
+  /* freading (fp) is undefined here, but fwriting (fp) is false.  */
+  ASSERT (fputc ('z', fp) == 'z');
+  ASSERT (!freading (fp));
+  ASSERT (fseek (fp, 0, SEEK_END) == 0);
+  /* freading (fp) is undefined here, because on some implementations (e.g.
+     glibc) fseek causes a buffer to be read.
+     fwriting (fp) is undefined as well.  */
+  ASSERT (fclose (fp) == 0);
+
+  /* Open it in append mode.  Write-only file is never reading.  */
+  fp = fopen (TESTFILE, "a");
+  ASSERT (fp);
+  ASSERT (!freading (fp));
+  ASSERT (fwrite ("bla", 1, 3, fp) == 3);
+  ASSERT (!freading (fp));
+  ASSERT (fclose (fp) == 0);
+  ASSERT (remove (TESTFILE) == 0);
+  return 0;
+}
diff --git a/gnulib-tests/test-freadptr.c b/gnulib-tests/test-freadptr.c
new file mode 100644
index 0000000..3a4a349
--- /dev/null
+++ b/gnulib-tests/test-freadptr.c
@@ -0,0 +1,100 @@
+/* Test of freadptr() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include "freadptr.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  int nbytes = atoi (argv[1]);
+  {
+    void *buf = malloc (nbytes);
+    ASSERT (fread (buf, 1, nbytes, stdin) == nbytes);
+    free (buf);
+  }
+
+  if (lseek (0, 0, SEEK_CUR) == nbytes)
+    {
+      /* An unbuffered stdio, such as BeOS or on uClibc compiled without
+         __STDIO_BUFFERS.  Or stdin is a pipe.  */
+      size_t size;
+      ASSERT (freadptr (stdin, &size) == NULL);
+    }
+  else
+    {
+      /* Normal buffered stdio.  */
+      const char stdin_contents[] =
+        "#!/bin/sh\n\n${CHECKER} ./test-freadptr${EXEEXT} 5 < \"$srcdir/test-freadptr.sh\" || exit 1\ncat \"$srcdir/test-freadptr.sh\" | ${CHECKER} ./test-freadptr${EXEEXT} 5 || exit 1\nexit 0\n";
+      const char *expected = stdin_contents + nbytes;
+      size_t available1;
+      size_t available2;
+      size_t available3;
+
+      /* Test normal behaviour.  */
+      {
+        const char *ptr = freadptr (stdin, &available1);
+
+        ASSERT (ptr != NULL);
+        ASSERT (available1 != 0);
+        ASSERT (available1 <= strlen (expected));
+        ASSERT (memcmp (ptr, expected, available1) == 0);
+      }
+
+      /* Test behaviour after normal ungetc.  */
+      ungetc (fgetc (stdin), stdin);
+      {
+        const char *ptr = freadptr (stdin, &available2);
+
+        if (ptr != NULL)
+          {
+            ASSERT (available2 == available1);
+            ASSERT (memcmp (ptr, expected, available2) == 0);
+          }
+      }
+
+      /* Test behaviour after arbitrary ungetc.  */
+      fgetc (stdin);
+      ungetc ('@', stdin);
+      {
+        const char *ptr = freadptr (stdin, &available3);
+
+        if (ptr != NULL)
+          {
+            ASSERT (available3 == 1 || available3 == available1);
+            ASSERT (ptr[0] == '@');
+            if (available3 > 1)
+              {
+                ASSERT (memcmp (ptr + 1, expected + 1, available3 - 1) == 0);
+              }
+          }
+      }
+    }
+
+  /* Free memory allocated during ungetc().  */
+  fclose (stdin);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-freadptr.sh b/gnulib-tests/test-freadptr.sh
new file mode 100755
index 0000000..0917fa3
--- /dev/null
+++ b/gnulib-tests/test-freadptr.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+${CHECKER} ./test-freadptr${EXEEXT} 5 < "$srcdir/test-freadptr.sh" || exit 1
+cat "$srcdir/test-freadptr.sh" | ${CHECKER} ./test-freadptr${EXEEXT} 5 || exit 1
+exit 0
diff --git a/gnulib-tests/test-freadptr2.c b/gnulib-tests/test-freadptr2.c
new file mode 100644
index 0000000..c26751e
--- /dev/null
+++ b/gnulib-tests/test-freadptr2.c
@@ -0,0 +1,63 @@
+/* Test of freadptr() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "freadptr.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+static int
+freadptrbufsize (FILE *fp)
+{
+  size_t size = 0;
+
+  freadptr (fp, &size);
+  return size;
+}
+
+int
+main (int argc, char **argv)
+{
+  int nbytes = atoi (argv[1]);
+  if (nbytes > 0)
+    {
+      void *buf = malloc (nbytes);
+      ASSERT (fread (buf, 1, nbytes, stdin) == nbytes);
+      free (buf);
+    }
+
+  if (nbytes == 0)
+    ASSERT (freadptrbufsize (stdin) == 0);
+  else
+    {
+      if (lseek (0, 0, SEEK_CUR) == nbytes)
+        /* An unbuffered stdio, such as BeOS or on uClibc compiled without
+           __STDIO_BUFFERS.  */
+        ASSERT (freadptrbufsize (stdin) == 0);
+      else
+        /* Normal buffered stdio.  */
+        ASSERT (freadptrbufsize (stdin) != 0);
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-freadptr2.sh b/gnulib-tests/test-freadptr2.sh
new file mode 100755
index 0000000..f429f38
--- /dev/null
+++ b/gnulib-tests/test-freadptr2.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+${CHECKER} ./test-freadptr2${EXEEXT} 0 < "$srcdir/test-freadptr2.sh" || exit 1
+${CHECKER} ./test-freadptr2${EXEEXT} 5 < "$srcdir/test-freadptr2.sh" || exit 1
+exit 0
diff --git a/gnulib-tests/test-freadseek.c b/gnulib-tests/test-freadseek.c
new file mode 100644
index 0000000..d1698c5
--- /dev/null
+++ b/gnulib-tests/test-freadseek.c
@@ -0,0 +1,98 @@
+/* Test of freadseek() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include "freadseek.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  static const char stdin_contents[] =
+    "#!/bin/sh\n\n${CHECKER} ./test-freadseek${EXEEXT} 5 19 6 7 18 9 19 < \"$srcdir/test-freadseek.sh\" || exit 1\ncat \"$srcdir/test-freadseek.sh\" | ${CHECKER} ./test-freadseek${EXEEXT} 5 19 6 7 18 9 19 || exit 1\nexit 0\n";
+  int nbytes1 = atoi (argv[1]);
+  int nbytes2 = atoi (argv[2]);
+  int nbytes3 = atoi (argv[3]);
+  int nbytes4 = atoi (argv[4]);
+  int nbytes5 = atoi (argv[5]);
+  int nbytes6 = atoi (argv[6]);
+  int nbytes7 = atoi (argv[7]);
+  void *buf1 = malloc (nbytes1);
+  void *buf3 = malloc (nbytes3);
+  void *buf5 = malloc (nbytes5);
+  void *buf7 = malloc (nbytes7);
+  /* A private variable to keep track of the position.  */
+  size_t position = 0;
+
+  ASSERT (fread (buf1, 1, nbytes1, stdin) == nbytes1);
+  ASSERT (memcmp (buf1, stdin_contents + position, nbytes1) == 0);
+  position += nbytes1;
+
+  /* Test normal behaviour.  */
+  ASSERT (freadseek (stdin, nbytes2) == 0);
+  position += nbytes2;
+
+  ASSERT (fread (buf3, 1, nbytes3, stdin) == nbytes3);
+  ASSERT (memcmp (buf3, stdin_contents + position, nbytes3) == 0);
+  position += nbytes3;
+
+  /* Test behaviour after normal ungetc.  */
+  ungetc (fgetc (stdin), stdin);
+  ASSERT (freadseek (stdin, nbytes4) == 0);
+  position += nbytes4;
+
+  ASSERT (fread (buf5, 1, nbytes5, stdin) == nbytes5);
+  ASSERT (memcmp (buf5, stdin_contents + position, nbytes5) == 0);
+  position += nbytes5;
+
+  /* Test behaviour after arbitrary ungetc.  */
+  fgetc (stdin);
+  ungetc ('@', stdin);
+  ASSERT (freadseek (stdin, nbytes6) == 0);
+  position += nbytes6;
+
+  ASSERT (fread (buf7, 1, nbytes7, stdin) == nbytes7);
+  ASSERT (memcmp (buf7, stdin_contents + position, nbytes7) == 0);
+  position += nbytes7;
+
+  /* Test move to end of file.  */
+  ASSERT (freadseek (stdin, strlen (stdin_contents) - position) == 0);
+  ASSERT (fgetc (stdin) == EOF);
+  ASSERT (!ferror (stdin));
+
+#if !defined __MINT__ /* FreeMiNT has problems seeking past end of file */
+  /* Test move beyond end of file.  */
+  ASSERT (freadseek (stdin, 1000000) == 0);
+  ASSERT (fgetc (stdin) == EOF);
+  ASSERT (!ferror (stdin));
+#endif
+
+  free (buf7);
+  free (buf5);
+  free (buf3);
+  free (buf1);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-freadseek.sh b/gnulib-tests/test-freadseek.sh
new file mode 100755
index 0000000..8925204
--- /dev/null
+++ b/gnulib-tests/test-freadseek.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+${CHECKER} ./test-freadseek${EXEEXT} 5 19 6 7 18 9 19 < "$srcdir/test-freadseek.sh" || exit 1
+cat "$srcdir/test-freadseek.sh" | ${CHECKER} ./test-freadseek${EXEEXT} 5 19 6 7 18 9 19 || exit 1
+exit 0
diff --git a/gnulib-tests/test-freopen-safer.c b/gnulib-tests/test-freopen-safer.c
new file mode 100644
index 0000000..de696fa
--- /dev/null
+++ b/gnulib-tests/test-freopen-safer.c
@@ -0,0 +1,97 @@
+/* Test of reopening a stream.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "stdio--.h"
+
+/* Helpers.  */
+#include <unistd.h>
+
+/* This test intentionally closes stderr.  So, we arrange to have fd 10
+   (outside the range of interesting fd's during the test) set up to
+   duplicate the original stderr.  */
+
+#define BACKUP_STDERR_FILENO 10
+#define ASSERT_STREAM myerr
+#include "macros.h"
+
+static FILE *myerr;
+
+int
+main (void)
+{
+  FILE *fp;
+
+  /* We close fd 2 later, so save it in fd 10.  */
+  if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO
+      || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL)
+    return 2;
+
+  {
+    FILE *tmp;
+    ASSERT (tmp = fopen ("/dev/null", "r"));
+    ASSERT (STDERR_FILENO < fileno (tmp));
+    ASSERT (fp = fopen ("/dev/null", "w"));
+    ASSERT (fileno (tmp) < fileno (fp));
+    ASSERT (fclose (tmp) == 0);
+  }
+
+  /* Gap in fds.  */
+  ASSERT (freopen ("/dev/null", "r+", fp) == fp);
+  ASSERT (STDERR_FILENO < fileno (fp));
+
+  ASSERT (freopen ("/dev/null", "r", stdin) == stdin);
+  ASSERT (STDIN_FILENO == fileno (stdin));
+
+  ASSERT (freopen ("/dev/null", "w", stdout) == stdout);
+  ASSERT (STDOUT_FILENO == fileno (stdout));
+
+  ASSERT (freopen ("/dev/null", "w", stderr) == stderr);
+  ASSERT (STDERR_FILENO == fileno (stderr));
+
+  /* fd 0 closed.  */
+  ASSERT (close (STDIN_FILENO) == 0);
+
+  ASSERT (freopen ("/dev/null", "w", stdout) == stdout);
+  ASSERT (STDOUT_FILENO == fileno (stdout));
+
+  ASSERT (freopen ("/dev/null", "w", stderr) == stderr);
+  ASSERT (STDERR_FILENO == fileno (stderr));
+
+  ASSERT (freopen ("/dev/null", "a", fp) == fp);
+  ASSERT (STDERR_FILENO < fileno (fp));
+
+  /* fd 1 closed.  */
+  ASSERT (close (STDOUT_FILENO) == 0);
+
+  ASSERT (freopen ("/dev/null", "w", stderr) == stderr);
+  ASSERT (STDERR_FILENO == fileno (stderr));
+
+  ASSERT (freopen ("/dev/null", "a+", fp) == fp);
+  ASSERT (STDERR_FILENO < fileno (fp));
+
+  /* fd 2 closed.  */
+  ASSERT (close (STDERR_FILENO) == 0);
+
+  ASSERT (freopen ("/dev/null", "w+", fp) == fp);
+  ASSERT (STDERR_FILENO < fileno (fp));
+
+  return 0;
+}
diff --git a/gnulib-tests/test-freopen.c b/gnulib-tests/test-freopen.c
new file mode 100644
index 0000000..b609208
--- /dev/null
+++ b/gnulib-tests/test-freopen.c
@@ -0,0 +1,86 @@
+/* Test of opening a file stream.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (freopen, FILE *, (char const *, char const *, FILE *));
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  const char *filename = "test-freopen.txt";
+
+  close (STDIN_FILENO);
+  ASSERT (freopen ("/dev/null", "r", stdin) != NULL);
+  ASSERT (getchar () == EOF);
+  ASSERT (!ferror (stdin));
+  ASSERT (feof (stdin));
+
+#if 0 /* freopen (NULL, ...) is unsupported on most platforms.  */
+  /* Test that freopen() sets errno if someone else closes the stream
+     fd behind the back of stdio.  */
+  {
+    FILE *fp = fopen (filename, "w+");
+    ASSERT (fp != NULL);
+    ASSERT (close (fileno (fp)) == 0);
+    errno = 0;
+    ASSERT (freopen (NULL, "r", fp) == NULL);
+    perror("freopen");
+    ASSERT (errno == EBADF);
+    fclose (fp);
+  }
+
+  /* Test that freopen() sets errno if the stream was constructed with
+     an invalid file descriptor.  */
+  {
+    FILE *fp = fdopen (-1, "w+");
+    if (fp != NULL)
+      {
+        errno = 0;
+        ASSERT (freopen (NULL, "r", fp) == NULL);
+        ASSERT (errno == EBADF);
+        fclose (fp);
+      }
+  }
+  {
+    FILE *fp;
+    close (99);
+    fp = fdopen (99, "w+");
+    if (fp != NULL)
+      {
+        errno = 0;
+        ASSERT (freopen (NULL, "r", fp) == NULL);
+        ASSERT (errno == EBADF);
+        fclose (fp);
+      }
+  }
+#endif
+
+  /* Clean up.  */
+  unlink (filename);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-frexp.c b/gnulib-tests/test-frexp.c
new file mode 100644
index 0000000..c503847
--- /dev/null
+++ b/gnulib-tests/test-frexp.c
@@ -0,0 +1,67 @@
+/* Test of splitting a double into fraction and mantissa.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <math.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (frexp, double, (double, int *));
+
+#include <float.h>
+
+#include "isnand-nolibm.h"
+#include "minus-zero.h"
+#include "infinity.h"
+#include "nan.h"
+#include "macros.h"
+
+/* Avoid some warnings from "gcc -Wshadow".
+   This file doesn't use the exp() function.  */
+#undef exp
+#define exp exponent
+
+#undef INFINITY
+#undef NAN
+
+#define DOUBLE double
+/* The use of 'volatile' guarantees that excess precision bits are dropped
+   when dealing with denormalized numbers.  It is necessary on x86 systems
+   where double-floats are not IEEE compliant by default, to avoid that the
+   results become platform and compiler option dependent.  'volatile' is a
+   portable alternative to gcc's -ffloat-store option.  */
+#define VOLATILE volatile
+#define ISNAN isnand
+#define INFINITY Infinityd ()
+#define NAN NaNd ()
+#define L_(literal) literal
+#define MINUS_ZERO minus_zerod
+#define MAX_EXP DBL_MAX_EXP
+#define MIN_EXP DBL_MIN_EXP
+#define MIN_NORMAL_EXP DBL_MIN_EXP
+#define FREXP frexp
+#define RANDOM randomd
+#include "test-frexp.h"
+
+int
+main ()
+{
+  test_function ();
+
+  return 0;
+}
diff --git a/gnulib-tests/test-frexp.h b/gnulib-tests/test-frexp.h
new file mode 100644
index 0000000..9b54da3
--- /dev/null
+++ b/gnulib-tests/test-frexp.h
@@ -0,0 +1,179 @@
+/* Test of splitting a double into fraction and mantissa.
+   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+static DOUBLE
+my_ldexp (DOUBLE x, int d)
+{
+  for (; d > 0; d--)
+    x *= L_(2.0);
+  for (; d < 0; d++)
+    x *= L_(0.5);
+  return x;
+}
+
+static void
+test_function (void)
+{
+  int i;
+  VOLATILE DOUBLE x;
+
+  { /* NaN.  */
+    int exp = -9999;
+    DOUBLE mantissa;
+    x = NAN;
+    mantissa = FREXP (x, &exp);
+    ASSERT (ISNAN (mantissa));
+  }
+
+  { /* Positive infinity.  */
+    int exp = -9999;
+    DOUBLE mantissa;
+    x = INFINITY;
+    mantissa = FREXP (x, &exp);
+    ASSERT (mantissa == x);
+  }
+
+  { /* Negative infinity.  */
+    int exp = -9999;
+    DOUBLE mantissa;
+    x = - INFINITY;
+    mantissa = FREXP (x, &exp);
+    ASSERT (mantissa == x);
+  }
+
+  { /* Positive zero.  */
+    int exp = -9999;
+    DOUBLE mantissa;
+    x = L_(0.0);
+    mantissa = FREXP (x, &exp);
+    ASSERT (exp == 0);
+    ASSERT (mantissa == x);
+    ASSERT (!signbit (mantissa));
+  }
+
+  { /* Negative zero.  */
+    int exp = -9999;
+    DOUBLE mantissa;
+    x = MINUS_ZERO;
+    mantissa = FREXP (x, &exp);
+    ASSERT (exp == 0);
+    ASSERT (mantissa == x);
+    ASSERT (signbit (mantissa));
+  }
+
+  for (i = 1, x = L_(1.0); i <= MAX_EXP; i++, x *= L_(2.0))
+    {
+      int exp = -9999;
+      DOUBLE mantissa = FREXP (x, &exp);
+      ASSERT (exp == i);
+      ASSERT (mantissa == L_(0.5));
+    }
+  for (i = 1, x = L_(1.0); i >= MIN_NORMAL_EXP; i--, x *= L_(0.5))
+    {
+      int exp = -9999;
+      DOUBLE mantissa = FREXP (x, &exp);
+      ASSERT (exp == i);
+      ASSERT (mantissa == L_(0.5));
+    }
+  for (; i >= MIN_EXP - 100 && x > L_(0.0); i--, x *= L_(0.5))
+    {
+      int exp = -9999;
+      DOUBLE mantissa = FREXP (x, &exp);
+      ASSERT (exp == i);
+      ASSERT (mantissa == L_(0.5));
+    }
+
+  for (i = 1, x = - L_(1.0); i <= MAX_EXP; i++, x *= L_(2.0))
+    {
+      int exp = -9999;
+      DOUBLE mantissa = FREXP (x, &exp);
+      ASSERT (exp == i);
+      ASSERT (mantissa == - L_(0.5));
+    }
+  for (i = 1, x = - L_(1.0); i >= MIN_NORMAL_EXP; i--, x *= L_(0.5))
+    {
+      int exp = -9999;
+      DOUBLE mantissa = FREXP (x, &exp);
+      ASSERT (exp == i);
+      ASSERT (mantissa == - L_(0.5));
+    }
+  for (; i >= MIN_EXP - 100 && x < L_(0.0); i--, x *= L_(0.5))
+    {
+      int exp = -9999;
+      DOUBLE mantissa = FREXP (x, &exp);
+      ASSERT (exp == i);
+      ASSERT (mantissa == - L_(0.5));
+    }
+
+  for (i = 1, x = L_(1.01); i <= MAX_EXP; i++, x *= L_(2.0))
+    {
+      int exp = -9999;
+      DOUBLE mantissa = FREXP (x, &exp);
+      ASSERT (exp == i);
+      ASSERT (mantissa == L_(0.505));
+    }
+  for (i = 1, x = L_(1.01); i >= MIN_NORMAL_EXP; i--, x *= L_(0.5))
+    {
+      int exp = -9999;
+      DOUBLE mantissa = FREXP (x, &exp);
+      ASSERT (exp == i);
+      ASSERT (mantissa == L_(0.505));
+    }
+  for (; i >= MIN_EXP - 100 && x > L_(0.0); i--, x *= L_(0.5))
+    {
+      int exp = -9999;
+      DOUBLE mantissa = FREXP (x, &exp);
+      ASSERT (exp == i);
+      ASSERT (mantissa >= L_(0.5));
+      ASSERT (mantissa < L_(1.0));
+      ASSERT (mantissa == my_ldexp (x, - exp));
+    }
+
+  for (i = 1, x = L_(1.73205); i <= MAX_EXP; i++, x *= L_(2.0))
+    {
+      int exp = -9999;
+      DOUBLE mantissa = FREXP (x, &exp);
+      ASSERT (exp == i);
+      ASSERT (mantissa == L_(0.866025));
+    }
+  for (i = 1, x = L_(1.73205); i >= MIN_NORMAL_EXP; i--, x *= L_(0.5))
+    {
+      int exp = -9999;
+      DOUBLE mantissa = FREXP (x, &exp);
+      ASSERT (exp == i);
+      ASSERT (mantissa == L_(0.866025));
+    }
+  for (; i >= MIN_EXP - 100 && x > L_(0.0); i--, x *= L_(0.5))
+    {
+      int exp = -9999;
+      DOUBLE mantissa = FREXP (x, &exp);
+      ASSERT (exp == i || exp == i + 1);
+      ASSERT (mantissa >= L_(0.5));
+      ASSERT (mantissa < L_(1.0));
+      ASSERT (mantissa == my_ldexp (x, - exp));
+    }
+
+  /* Randomized tests.  */
+  for (i = 0; i < SIZEOF (RANDOM); i++)
+    {
+      x = L_(20.0) * RANDOM[i] - L_(10.0); /* -10.0 <= x <= 10.0 */
+      {
+        int exp = -9999;
+        DOUBLE mantissa = FREXP (x, &exp);
+        ASSERT (x == my_ldexp (mantissa, exp));
+      }
+    }
+}
diff --git a/gnulib-tests/test-frexpl.c b/gnulib-tests/test-frexpl.c
new file mode 100644
index 0000000..bed1802
--- /dev/null
+++ b/gnulib-tests/test-frexpl.c
@@ -0,0 +1,78 @@
+/* Test of splitting a 'long double' into fraction and mantissa.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <math.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (frexpl, long double, (long double, int *));
+
+#include <float.h>
+
+#include "fpucw.h"
+#include "isnanl-nolibm.h"
+#include "minus-zero.h"
+#include "infinity.h"
+#include "nan.h"
+#include "macros.h"
+
+/* Avoid some warnings from "gcc -Wshadow".
+   This file doesn't use the exp() function.  */
+#undef exp
+#define exp exponent
+
+#undef INFINITY
+#undef NAN
+
+#define DOUBLE long double
+#define VOLATILE
+#define ISNAN isnanl
+#define INFINITY Infinityl ()
+#define NAN NaNl ()
+#define L_(literal) literal##L
+#define MINUS_ZERO minus_zerol
+#define MAX_EXP LDBL_MAX_EXP
+#define MIN_EXP LDBL_MIN_EXP
+/* On MIPS IRIX machines, LDBL_MIN_EXP is -1021, but the smallest reliable
+   exponent for 'long double' is -964.  Similarly, on PowerPC machines,
+   LDBL_MIN_EXP is -1021, but the smallest reliable exponent for 'long double'
+   is -968.  For exponents below that, the precision may be truncated to the
+   precision used for 'double'.  */
+#ifdef __sgi
+# define MIN_NORMAL_EXP (LDBL_MIN_EXP + 57)
+#elif defined __ppc || defined __ppc__ || defined __powerpc || defined __powerpc__
+# define MIN_NORMAL_EXP (LDBL_MIN_EXP + 53)
+#else
+# define MIN_NORMAL_EXP LDBL_MIN_EXP
+#endif
+#define FREXP frexpl
+#define RANDOM randoml
+#include "test-frexp.h"
+
+int
+main ()
+{
+  DECL_LONG_DOUBLE_ROUNDING
+
+  BEGIN_LONG_DOUBLE_ROUNDING ();
+
+  test_function ();
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fseek.c b/gnulib-tests/test-fseek.c
new file mode 100644
index 0000000..ae653a7
--- /dev/null
+++ b/gnulib-tests/test-fseek.c
@@ -0,0 +1,70 @@
+/* Test of fseek() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+/* None of the files accessed by this test are large, so disable the
+   fseek link warning if the user requested GNULIB_POSIXCHECK.  */
+#define _GL_NO_LARGE_FILES
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fseek, int, (FILE *, long, int));
+
+#include "macros.h"
+
+#ifndef FUNC_UNGETC_BROKEN
+# define FUNC_UNGETC_BROKEN 0
+#endif
+
+int
+main (int argc, char **argv)
+{
+  /* Assume stdin is non-empty, seekable, and starts with '#!/bin/sh'
+     iff argc > 1.  */
+  int expected = argc > 1 ? 0 : -1;
+  ASSERT (fseek (stdin, 0, SEEK_CUR) == expected);
+  if (argc > 1)
+    {
+      /* Test that fseek discards previously read ungetc data.  */
+      int ch = fgetc (stdin);
+      ASSERT (ch == '#');
+      ASSERT (ungetc (ch, stdin) == ch);
+      ASSERT (fseek (stdin, 2, SEEK_SET) == 0);
+      ch = fgetc (stdin);
+      ASSERT (ch == '/');
+      if (2 < argc)
+        {
+          if (FUNC_UNGETC_BROKEN)
+            {
+              fputs ("Skipping test: ungetc cannot handle arbitrary bytes\n",
+                     stderr);
+              return 77;
+            }
+          /* Test that fseek discards random ungetc data.  */
+          ASSERT (ungetc (ch ^ 0xff, stdin) == (ch ^ 0xff));
+        }
+      ASSERT (fseek (stdin, 0, SEEK_END) == 0);
+      ASSERT (fgetc (stdin) == EOF);
+      /* Test that fseek resets end-of-file marker.  */
+      ASSERT (feof (stdin));
+      ASSERT (fseek (stdin, 0, SEEK_END) == 0);
+      ASSERT (!feof (stdin));
+    }
+  return 0;
+}
diff --git a/gnulib-tests/test-fseek.sh b/gnulib-tests/test-fseek.sh
new file mode 100755
index 0000000..4ad3fda
--- /dev/null
+++ b/gnulib-tests/test-fseek.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+${CHECKER} ./test-fseek${EXEEXT} 1 < "$srcdir/test-fseek.sh" || exit 1
+echo hi | ${CHECKER} ./test-fseek${EXEEXT} || exit 1
+exit 0
diff --git a/gnulib-tests/test-fseek2.sh b/gnulib-tests/test-fseek2.sh
new file mode 100755
index 0000000..beadc98
--- /dev/null
+++ b/gnulib-tests/test-fseek2.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec ${CHECKER} ./test-fseek${EXEEXT} 1 2 < "$srcdir/test-fseek2.sh"
diff --git a/gnulib-tests/test-fseeko.c b/gnulib-tests/test-fseeko.c
new file mode 100644
index 0000000..2452999
--- /dev/null
+++ b/gnulib-tests/test-fseeko.c
@@ -0,0 +1,74 @@
+/* Test of fseeko() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+/* None of the files accessed by this test are large, so disable the
+   fseek link warning if we are not using the gnulib fseek module.  */
+#define _GL_NO_LARGE_FILES
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fseeko, int, (FILE *, off_t, int));
+
+
+#include "macros.h"
+
+#ifndef FUNC_UNGETC_BROKEN
+# define FUNC_UNGETC_BROKEN 0
+#endif
+
+int
+main (int argc, char **argv _GL_UNUSED)
+{
+  /* Assume stdin is non-empty, seekable, and starts with '#!/bin/sh'
+     iff argc > 1.  */
+  int expected = argc > 1 ? 0 : -1;
+  /* Exit with success only if fseek/fseeko agree.  */
+  int r1 = fseeko (stdin, 0, SEEK_CUR);
+  int r2 = fseek (stdin, 0, SEEK_CUR);
+  ASSERT (r1 == r2 && r1 == expected);
+  if (argc > 1)
+    {
+      /* Test that fseek discards previously read ungetc data.  */
+      int ch = fgetc (stdin);
+      ASSERT (ch == '#');
+      ASSERT (ungetc (ch, stdin) == ch);
+      ASSERT (fseeko (stdin, 2, SEEK_SET) == 0);
+      ch = fgetc (stdin);
+      ASSERT (ch == '/');
+      if (2 < argc)
+        {
+          if (FUNC_UNGETC_BROKEN)
+            {
+              fputs ("Skipping test: ungetc cannot handle arbitrary bytes\n",
+                     stderr);
+              return 77;
+            }
+          /* Test that fseek discards random ungetc data.  */
+          ASSERT (ungetc (ch ^ 0xff, stdin) == (ch ^ 0xff));
+        }
+      ASSERT (fseeko (stdin, 0, SEEK_END) == 0);
+      ASSERT (fgetc (stdin) == EOF);
+      /* Test that fseek resets end-of-file marker.  */
+      ASSERT (feof (stdin));
+      ASSERT (fseeko (stdin, 0, SEEK_END) == 0);
+      ASSERT (!feof (stdin));
+    }
+  return 0;
+}
diff --git a/gnulib-tests/test-fseeko.sh b/gnulib-tests/test-fseeko.sh
new file mode 100755
index 0000000..c7b675e
--- /dev/null
+++ b/gnulib-tests/test-fseeko.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+${CHECKER} ./test-fseeko${EXEEXT} 1 < "$srcdir/test-fseeko.sh" || exit 1
+echo hi | ${CHECKER} ./test-fseeko${EXEEXT} || exit 1
+exit 0
diff --git a/gnulib-tests/test-fseeko2.sh b/gnulib-tests/test-fseeko2.sh
new file mode 100755
index 0000000..7bf315e
--- /dev/null
+++ b/gnulib-tests/test-fseeko2.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec ${CHECKER} ./test-fseeko${EXEEXT} 1 2 < "$srcdir/test-fseeko2.sh"
diff --git a/gnulib-tests/test-fseeko3.c b/gnulib-tests/test-fseeko3.c
new file mode 100644
index 0000000..78b79c6
--- /dev/null
+++ b/gnulib-tests/test-fseeko3.c
@@ -0,0 +1,51 @@
+/* Test of fseeko() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <eblake@redhat.com>, 2011.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include <stdlib.h>
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  int do_initial_ftell = atoi (argv[1]);
+  const char *filename = argv[2];
+  FILE *fp = fopen (filename, "r");
+  ASSERT (fp != NULL);
+
+  if (do_initial_ftell)
+    {
+      off_t pos = ftell (fp);
+      ASSERT (pos == 0);
+    }
+
+  ASSERT (fseeko (fp, 0, SEEK_END) == 0);
+
+  {
+    off_t pos = ftell (fp);
+    ASSERT (pos > 0);
+  }
+
+  ASSERT (fclose (fp) == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fseeko3.sh b/gnulib-tests/test-fseeko3.sh
new file mode 100755
index 0000000..254d0cb
--- /dev/null
+++ b/gnulib-tests/test-fseeko3.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+${CHECKER} ./test-fseeko3${EXEEXT} 0 "$srcdir/test-fseeko3.sh" || exit 1
+
+${CHECKER} ./test-fseeko3${EXEEXT} 1 "$srcdir/test-fseeko3.sh" || exit 1
+
+exit 0
diff --git a/gnulib-tests/test-fseeko4.c b/gnulib-tests/test-fseeko4.c
new file mode 100644
index 0000000..5e19c27
--- /dev/null
+++ b/gnulib-tests/test-fseeko4.c
@@ -0,0 +1,73 @@
+/* Test of fseeko() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  const char *filename = argv[1];
+
+  /* Test that fseeko() sets errno if someone else closes the stream
+     fd behind the back of stdio.  */
+  {
+    FILE *fp = fopen (filename, "r");
+    ASSERT (fp != NULL);
+    setvbuf (fp, NULL, _IONBF, 0);
+    ASSERT (ftell (fp) == 0);
+    ASSERT (fseeko (fp, 0, SEEK_END) == 0);
+    ASSERT (ftell (fp) > 0);
+    ASSERT (close (fileno (fp)) == 0);
+    errno = 0;
+    ASSERT (fseeko (fp, 0, SEEK_SET) == -1);
+    ASSERT (errno == EBADF);
+    fclose (fp);
+  }
+
+  /* Test that fseeko() sets errno if the stream was constructed with
+     an invalid file descriptor.  */
+  {
+    FILE *fp = fdopen (-1, "w");
+    if (fp != NULL)
+      {
+        errno = 0;
+        ASSERT (fseeko (fp, 0, SEEK_END) == -1);
+        ASSERT (errno == EBADF);
+        fclose (fp);
+      }
+  }
+  {
+    FILE *fp;
+    close (99);
+    fp = fdopen (99, "w");
+    if (fp != NULL)
+      {
+        errno = 0;
+        ASSERT (fseeko (fp, 0, SEEK_END) == -1);
+        ASSERT (errno == EBADF);
+        fclose (fp);
+      }
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fseeko4.sh b/gnulib-tests/test-fseeko4.sh
new file mode 100755
index 0000000..7a4d352
--- /dev/null
+++ b/gnulib-tests/test-fseeko4.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+${CHECKER} ./test-fseeko4${EXEEXT} "$srcdir/test-fseeko4.sh" || exit 1
+
+exit 0
diff --git a/gnulib-tests/test-fseterr.c b/gnulib-tests/test-fseterr.c
new file mode 100644
index 0000000..cb042c1
--- /dev/null
+++ b/gnulib-tests/test-fseterr.c
@@ -0,0 +1,44 @@
+/* Test setting the error indicator of a stream.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "fseterr.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+main ()
+{
+  /* All streams are initially created with the error indicator cleared.  */
+  if (ferror (stdout))
+    abort ();
+
+  /* Verify that fseterr() works.  */
+  fseterr (stdout);
+  if (!ferror (stdout))
+    abort ();
+
+  /* Verify fseterr's effect can be undone by clearerr().  */
+  clearerr (stdout);
+  if (ferror (stdout))
+    abort ();
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fstat.c b/gnulib-tests/test-fstat.c
new file mode 100644
index 0000000..621498c
--- /dev/null
+++ b/gnulib-tests/test-fstat.c
@@ -0,0 +1,50 @@
+/* Tests of fstat() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fstat, int, (int, struct stat *));
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    struct stat statbuf;
+
+    errno = 0;
+    ASSERT (fstat (-1, &statbuf) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    struct stat statbuf;
+
+    close (99);
+    errno = 0;
+    ASSERT (fstat (99, &statbuf) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-fstatat.c b/gnulib-tests/test-fstatat.c
new file mode 100644
index 0000000..f0f12b5
--- /dev/null
+++ b/gnulib-tests/test-fstatat.c
@@ -0,0 +1,108 @@
+/* Tests of fstatat.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fstatat, int, (int, char const *, struct stat *, int));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "openat.h"
+#include "same-inode.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#ifndef BASE
+# define BASE "test-fstatat.t"
+#endif
+
+#include "test-lstat.h"
+#include "test-stat.h"
+
+static int dfd = AT_FDCWD;
+
+/* Wrapper around fstatat to test stat behavior.  */
+static int
+do_stat (char const *name, struct stat *st)
+{
+#ifdef TEST_STATAT
+  return statat (dfd, name, st);
+#else
+  return fstatat (dfd, name, st, 0);
+#endif
+}
+
+/* Wrapper around fstatat to test lstat behavior.  */
+static int
+do_lstat (char const *name, struct stat *st)
+{
+#ifdef TEST_STATAT
+  return lstatat (dfd, name, st);
+#else
+  return fstatat (dfd, name, st, AT_SYMLINK_NOFOLLOW);
+#endif
+}
+
+int
+main (int argc _GL_UNUSED, char *argv[])
+{
+  int result;
+
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    struct stat statbuf;
+
+    errno = 0;
+    ASSERT (fstatat (-1, "foo", &statbuf, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    struct stat statbuf;
+
+    close (99);
+    errno = 0;
+    ASSERT (fstatat (99, "foo", &statbuf, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  result = test_stat_func (do_stat, false);
+  ASSERT (test_lstat_func (do_lstat, false) == result);
+  dfd = open (".", O_RDONLY);
+  ASSERT (0 <= dfd);
+  ASSERT (test_stat_func (do_stat, false) == result);
+  ASSERT (test_lstat_func (do_lstat, false) == result);
+  ASSERT (close (dfd) == 0);
+
+  /* FIXME - add additional tests of dfd not at current directory.  */
+
+  if (result == 77)
+    fputs ("skipping test: symlinks not supported on this file system\n",
+           stderr);
+  return result;
+}
diff --git a/gnulib-tests/test-fsync.c b/gnulib-tests/test-fsync.c
new file mode 100644
index 0000000..2e0381b
--- /dev/null
+++ b/gnulib-tests/test-fsync.c
@@ -0,0 +1,83 @@
+/* Test of fsync() function.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fsync, int, (int));
+
+#include <errno.h>
+#include <fcntl.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  int fd;
+  const char *file = "test-fsync.txt";
+
+  /* Assuming stdin and stdout are ttys, fsync is allowed to fail, but
+     may succeed as an extension.  */
+  for (fd = 0; fd < 2; fd++)
+    if (fsync (fd) != 0)
+      {
+        ASSERT (errno == EINVAL /* POSIX */
+                || errno == ENOTSUP /* seen on Mac OS X 10.5 */
+                || errno == EBADF /* seen on AIX 7.1 */
+                || errno == EIO /* seen on mingw */
+                );
+      }
+
+  /* fsync must fail on invalid fd.  */
+  {
+    errno = 0;
+    ASSERT (fsync (-1) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (fsync (99) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  fd = open (file, O_WRONLY|O_CREAT|O_TRUNC, 0644);
+  ASSERT (0 <= fd);
+  ASSERT (write (fd, "hello", 5) == 5);
+  ASSERT (fsync (fd) == 0);
+  ASSERT (close (fd) == 0);
+
+  /* For a read-only regular file input file descriptor, fsync should
+     succeed (since at least atime changes can be synchronized).
+     On AIX and Cygwin, this test would fail.  */
+#if !(defined _AIX || defined __CYGWIN__)
+  fd = open (file, O_RDONLY);
+  ASSERT (0 <= fd);
+  {
+    char buf[1];
+    ASSERT (read (fd, buf, sizeof buf) == sizeof buf);
+  }
+  ASSERT (fsync (fd) == 0);
+  ASSERT (close (fd) == 0);
+#endif
+
+  ASSERT (unlink (file) == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-ftell.c b/gnulib-tests/test-ftell.c
new file mode 100644
index 0000000..859fec7
--- /dev/null
+++ b/gnulib-tests/test-ftell.c
@@ -0,0 +1,107 @@
+/* Test of ftell() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+/* None of the files accessed by this test are large, so disable the
+   fseek link warning if we are not using the gnulib fseek module.  */
+#define _GL_NO_LARGE_FILES
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (ftell, long, (FILE *));
+
+#include "binary-io.h"
+#include "macros.h"
+
+#ifndef FUNC_UNGETC_BROKEN
+# define FUNC_UNGETC_BROKEN 0
+#endif
+
+int
+main (int argc, char **argv)
+{
+  int ch;
+  /* Assume stdin is seekable iff argc > 1.  */
+  if (argc == 1)
+    {
+      ASSERT (ftell (stdin) == -1);
+      return 0;
+    }
+
+  /* mingw ftell is unreliable on text mode input.  */
+  set_binary_mode (0, O_BINARY);
+
+  /* Simple tests.  */
+  ASSERT (ftell (stdin) == 0);
+
+  ch = fgetc (stdin);
+  ASSERT (ch == '#');
+  ASSERT (ftell (stdin) == 1);
+
+  /* Test ftell after ungetc of read input.  */
+  ch = ungetc ('#', stdin);
+  ASSERT (ch == '#');
+  ASSERT (ftell (stdin) == 0);
+
+  ch = fgetc (stdin);
+  ASSERT (ch == '#');
+  ASSERT (ftell (stdin) == 1);
+
+  /* Test ftell after fseek.  */
+  ASSERT (fseek (stdin, 2, SEEK_SET) == 0);
+  ASSERT (ftell (stdin) == 2);
+
+  /* Test ftell after random ungetc.  */
+  ch = fgetc (stdin);
+  ASSERT (ch == '/');
+  ch = ungetc ('@', stdin);
+  ASSERT (ch == '@');
+  ASSERT (ftell (stdin) == 2);
+
+  ch = fgetc (stdin);
+  ASSERT (ch == '@');
+  ASSERT (ftell (stdin) == 3);
+
+  if (2 < argc)
+    {
+      if (FUNC_UNGETC_BROKEN)
+        {
+          fputs ("Skipping test: ungetc cannot handle arbitrary bytes\n",
+                 stderr);
+          return 77;
+        }
+      /* Test ftell after ungetc without read.  */
+      ASSERT (fseek (stdin, 0, SEEK_CUR) == 0);
+      ASSERT (ftell (stdin) == 3);
+
+      ch = ungetc ('~', stdin);
+      ASSERT (ch == '~');
+      ASSERT (ftell (stdin) == 2);
+    }
+
+#if !defined __MINT__ /* FreeMiNT has problems seeking past end of file */
+  /* Test ftell beyond end of file.  */
+  ASSERT (fseek (stdin, 0, SEEK_END) == 0);
+  ch = ftell (stdin);
+  ASSERT (fseek (stdin, 10, SEEK_END) == 0);
+  ASSERT (ftell (stdin) == ch + 10);
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-ftell.sh b/gnulib-tests/test-ftell.sh
new file mode 100755
index 0000000..5c27808
--- /dev/null
+++ b/gnulib-tests/test-ftell.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+${CHECKER} ./test-ftell${EXEEXT} 1 < "$srcdir/test-ftell.sh" || exit 1
+echo hi | ${CHECKER} ./test-ftell${EXEEXT} || exit 1
+exit 0
diff --git a/gnulib-tests/test-ftell2.sh b/gnulib-tests/test-ftell2.sh
new file mode 100755
index 0000000..7d116d2
--- /dev/null
+++ b/gnulib-tests/test-ftell2.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec ${CHECKER} ./test-ftell${EXEEXT} 1 2 < "$srcdir/test-ftell2.sh"
diff --git a/gnulib-tests/test-ftell3.c b/gnulib-tests/test-ftell3.c
new file mode 100644
index 0000000..1feafcb
--- /dev/null
+++ b/gnulib-tests/test-ftell3.c
@@ -0,0 +1,78 @@
+/* Test of ftell() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* None of the files accessed by this test are large, so disable the
+   fseek link warning if we are not using the gnulib fseek module.  */
+#define _GL_NO_LARGE_FILES
+#include <stdio.h>
+
+#include <string.h>
+
+#include "macros.h"
+
+#define TESTFILE "t-ftell3.tmp"
+
+int
+main (void)
+{
+  FILE *fp;
+
+  /* Create a file with some contents.  */
+  fp = fopen (TESTFILE, "w");
+  if (fp == NULL)
+    goto skip;
+  if (fwrite ("foogarsh", 1, 8, fp) < 8)
+    goto skip;
+  if (fclose (fp))
+    goto skip;
+
+  /* The file's contents is now "foogarsh".  */
+
+  /* Try writing after reading to EOF.  */
+  fp = fopen (TESTFILE, "r+");
+  if (fp == NULL)
+    goto skip;
+  if (fseek (fp, -1, SEEK_END))
+    goto skip;
+  ASSERT (getc (fp) == 'h');
+  ASSERT (getc (fp) == EOF);
+  ASSERT (ftell (fp) == 8);
+  ASSERT (ftell (fp) == 8);
+  ASSERT (putc ('!', fp) == '!');
+  ASSERT (ftell (fp) == 9);
+  ASSERT (fclose (fp) == 0);
+  fp = fopen (TESTFILE, "r");
+  if (fp == NULL)
+    goto skip;
+  {
+    char buf[10];
+    ASSERT (fread (buf, 1, 10, fp) == 9);
+    ASSERT (memcmp (buf, "foogarsh!", 9) == 0);
+  }
+  ASSERT (fclose (fp) == 0);
+
+  /* The file's contents is now "foogarsh!".  */
+
+  remove (TESTFILE);
+  return 0;
+
+ skip:
+  fprintf (stderr, "Skipping test: prerequisite file operations failed.\n");
+  remove (TESTFILE);
+  return 77;
+}
diff --git a/gnulib-tests/test-ftello.c b/gnulib-tests/test-ftello.c
new file mode 100644
index 0000000..71936a1
--- /dev/null
+++ b/gnulib-tests/test-ftello.c
@@ -0,0 +1,118 @@
+/* Test of ftello() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+/* None of the files accessed by this test are large, so disable the
+   fseek link warning if we are not using the gnulib fseek module.  */
+#define _GL_NO_LARGE_FILES
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (ftello, off_t, (FILE *));
+
+#include "binary-io.h"
+#include "macros.h"
+
+#ifndef FUNC_UNGETC_BROKEN
+# define FUNC_UNGETC_BROKEN 0
+#endif
+
+int
+main (int argc, char **argv _GL_UNUSED)
+{
+  int ch;
+  /* Assume stdin is seekable iff argc > 1.  */
+  if (argc == 1)
+    {
+      ASSERT (ftell (stdin) == -1);
+      ASSERT (ftello (stdin) == -1);
+      return 0;
+    }
+
+  /* mingw ftell is unreliable on text mode input.  */
+  set_binary_mode (0, O_BINARY);
+
+  /* Simple tests.  For each test, make sure ftell and ftello agree.  */
+  ASSERT (ftell (stdin) == 0);
+  ASSERT (ftello (stdin) == 0);
+
+  ch = fgetc (stdin);
+  ASSERT (ch == '#');
+  ASSERT (ftell (stdin) == 1);
+  ASSERT (ftello (stdin) == 1);
+
+  /* Test ftell after ungetc of read input.  */
+  ch = ungetc ('#', stdin);
+  ASSERT (ch == '#');
+  ASSERT (ftell (stdin) == 0);
+  ASSERT (ftello (stdin) == 0);
+
+  ch = fgetc (stdin);
+  ASSERT (ch == '#');
+  ASSERT (ftell (stdin) == 1);
+  ASSERT (ftello (stdin) == 1);
+
+  /* Test ftell after fseek.  */
+  ASSERT (fseek (stdin, 2, SEEK_SET) == 0);
+  ASSERT (ftell (stdin) == 2);
+  ASSERT (ftello (stdin) == 2);
+
+  /* Test ftell after random ungetc.  */
+  ch = fgetc (stdin);
+  ASSERT (ch == '/');
+  ch = ungetc ('@', stdin);
+  ASSERT (ch == '@');
+  ASSERT (ftell (stdin) == 2);
+  ASSERT (ftello (stdin) == 2);
+
+  ch = fgetc (stdin);
+  ASSERT (ch == '@');
+  ASSERT (ftell (stdin) == 3);
+  ASSERT (ftello (stdin) == 3);
+
+  if (2 < argc)
+    {
+      if (FUNC_UNGETC_BROKEN)
+        {
+          fputs ("Skipping test: ungetc cannot handle arbitrary bytes\n",
+                 stderr);
+          return 77;
+        }
+      /* Test ftell after ungetc without read.  */
+      ASSERT (fseek (stdin, 0, SEEK_CUR) == 0);
+      ASSERT (ftell (stdin) == 3);
+      ASSERT (ftello (stdin) == 3);
+
+      ch = ungetc ('~', stdin);
+      ASSERT (ch == '~');
+      ASSERT (ftell (stdin) == 2);
+      ASSERT (ftello (stdin) == 2);
+    }
+
+#if !defined __MINT__ /* FreeMiNT has problems seeking past end of file */
+  /* Test ftell beyond end of file.  */
+  ASSERT (fseek (stdin, 0, SEEK_END) == 0);
+  ch = ftello (stdin);
+  ASSERT (fseek (stdin, 10, SEEK_END) == 0);
+  ASSERT (ftell (stdin) == ch + 10);
+  ASSERT (ftello (stdin) == ch + 10);
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-ftello.sh b/gnulib-tests/test-ftello.sh
new file mode 100755
index 0000000..e8db061
--- /dev/null
+++ b/gnulib-tests/test-ftello.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+${CHECKER} ./test-ftello${EXEEXT} 1 < "$srcdir/test-ftello.sh" || exit 1
+echo hi | ${CHECKER} ./test-ftello${EXEEXT} || exit 1
+exit 0
diff --git a/gnulib-tests/test-ftello2.sh b/gnulib-tests/test-ftello2.sh
new file mode 100755
index 0000000..63a222c
--- /dev/null
+++ b/gnulib-tests/test-ftello2.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec ${CHECKER} ./test-ftello${EXEEXT} 1 2 < "$srcdir/test-ftello2.sh"
diff --git a/gnulib-tests/test-ftello3.c b/gnulib-tests/test-ftello3.c
new file mode 100644
index 0000000..f693596
--- /dev/null
+++ b/gnulib-tests/test-ftello3.c
@@ -0,0 +1,78 @@
+/* Test of ftello() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* None of the files accessed by this test are large, so disable the
+   fseek link warning if we are not using the gnulib fseek module.  */
+#define _GL_NO_LARGE_FILES
+#include <stdio.h>
+
+#include <string.h>
+
+#include "macros.h"
+
+#define TESTFILE "t-ftello3.tmp"
+
+int
+main (void)
+{
+  FILE *fp;
+
+  /* Create a file with some contents.  */
+  fp = fopen (TESTFILE, "w");
+  if (fp == NULL)
+    goto skip;
+  if (fwrite ("foogarsh", 1, 8, fp) < 8)
+    goto skip;
+  if (fclose (fp))
+    goto skip;
+
+  /* The file's contents is now "foogarsh".  */
+
+  /* Try writing after reading to EOF.  */
+  fp = fopen (TESTFILE, "r+");
+  if (fp == NULL)
+    goto skip;
+  if (fseek (fp, -1, SEEK_END))
+    goto skip;
+  ASSERT (getc (fp) == 'h');
+  ASSERT (getc (fp) == EOF);
+  ASSERT (ftello (fp) == 8);
+  ASSERT (ftello (fp) == 8);
+  ASSERT (putc ('!', fp) == '!');
+  ASSERT (ftello (fp) == 9);
+  ASSERT (fclose (fp) == 0);
+  fp = fopen (TESTFILE, "r");
+  if (fp == NULL)
+    goto skip;
+  {
+    char buf[10];
+    ASSERT (fread (buf, 1, 10, fp) == 9);
+    ASSERT (memcmp (buf, "foogarsh!", 9) == 0);
+  }
+  ASSERT (fclose (fp) == 0);
+
+  /* The file's contents is now "foogarsh!".  */
+
+  remove (TESTFILE);
+  return 0;
+
+ skip:
+  fprintf (stderr, "Skipping test: prerequisite file operations failed.\n");
+  remove (TESTFILE);
+  return 77;
+}
diff --git a/gnulib-tests/test-ftello4.c b/gnulib-tests/test-ftello4.c
new file mode 100644
index 0000000..54cfe75
--- /dev/null
+++ b/gnulib-tests/test-ftello4.c
@@ -0,0 +1,70 @@
+/* Test of ftello() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  const char *filename = argv[1];
+
+  /* Test that ftello() sets errno if someone else closes the stream
+     fd behind the back of stdio.  */
+  {
+    FILE *fp = fopen (filename, "r");
+    ASSERT (fp != NULL);
+    setvbuf (fp, NULL, _IONBF, 0);
+    ASSERT (close (fileno (fp)) == 0);
+    errno = 0;
+    ASSERT (ftello (fp) == (off_t)-1);
+    ASSERT (errno == EBADF);
+    fclose (fp);
+  }
+
+  /* Test that ftello() sets errno if the stream was constructed with
+     an invalid file descriptor.  */
+  {
+    FILE *fp = fdopen (-1, "w");
+    if (fp != NULL)
+      {
+        errno = 0;
+        ASSERT (ftello (fp) == (off_t)-1);
+        ASSERT (errno == EBADF);
+        fclose (fp);
+      }
+  }
+  {
+    FILE *fp;
+    close (99);
+    fp = fdopen (99, "w");
+    if (fp != NULL)
+      {
+        errno = 0;
+        ASSERT (ftello (fp) == (off_t)-1);
+        ASSERT (errno == EBADF);
+        fclose (fp);
+      }
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-ftello4.sh b/gnulib-tests/test-ftello4.sh
new file mode 100755
index 0000000..f7ff149
--- /dev/null
+++ b/gnulib-tests/test-ftello4.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+${CHECKER} ./test-ftello4${EXEEXT} "$srcdir/test-ftello4.sh" || exit 1
+
+exit 0
diff --git a/gnulib-tests/test-ftruncate.c b/gnulib-tests/test-ftruncate.c
new file mode 100644
index 0000000..3ad7edd
--- /dev/null
+++ b/gnulib-tests/test-ftruncate.c
@@ -0,0 +1,60 @@
+/* Test truncating a file.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (ftruncate, int, (int, off_t));
+
+#include <errno.h>
+#include <fcntl.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  const char *filename = argv[1];
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (ftruncate (-1, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (ftruncate (99, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Test behaviour for read-only file descriptors.  */
+  {
+    int fd = open (filename, O_RDONLY);
+    ASSERT (fd >= 0);
+    errno = 0;
+    ASSERT (ftruncate (fd, 0) == -1);
+    ASSERT (errno == EBADF || errno == EINVAL
+            || errno == EACCES /* seen on mingw */
+           );
+    close (fd);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-ftruncate.sh b/gnulib-tests/test-ftruncate.sh
new file mode 100755
index 0000000..203e07b
--- /dev/null
+++ b/gnulib-tests/test-ftruncate.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec ${CHECKER} ./test-ftruncate${EXEEXT} "$srcdir/test-ftruncate.sh"
diff --git a/gnulib-tests/test-futimens.c b/gnulib-tests/test-futimens.c
new file mode 100644
index 0000000..87cd7a7
--- /dev/null
+++ b/gnulib-tests/test-futimens.c
@@ -0,0 +1,51 @@
+/* Tests of futimens.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (futimens, int, (int, struct timespec const[2]));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "stat-time.h"
+#include "timespec.h"
+#include "utimecmp.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-futimens.t"
+
+#include "test-futimens.h"
+
+int
+main (void)
+{
+  /* Clean up any trash from prior testsuite runs.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_futimens (futimens, true);
+}
diff --git a/gnulib-tests/test-futimens.h b/gnulib-tests/test-futimens.h
new file mode 100644
index 0000000..b5645e6
--- /dev/null
+++ b/gnulib-tests/test-futimens.h
@@ -0,0 +1,177 @@
+/* Test of file timestamp modification functions.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "test-utimens-common.h"
+
+/* This file is designed to test both fdutimens(a,NULL,b) and
+   futimens(a,b).  FUNC is the function to test.  Assumes that BASE
+   and ASSERT are already defined.  If PRINT, warn before skipping
+   tests with status 77.  */
+static int
+test_futimens (int (*func) (int, struct timespec const *),
+               bool print)
+{
+  int fd = creat (BASE "file", 0600);
+  int result;
+  struct stat st1;
+  struct stat st2;
+  ASSERT (0 <= fd);
+
+  /* Sanity check.  */
+  ASSERT (fstat (fd, &st1) == 0);
+  nap ();
+  errno = 0;
+  result = func (fd, NULL);
+  if (result == -1 && errno == ENOSYS)
+    {
+      ASSERT (close (fd) == 0);
+      ASSERT (unlink (BASE "file") == 0);
+      if (print)
+        fputs ("skipping test: "
+               "setting fd time not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  ASSERT (!result);
+  ASSERT (fstat (fd, &st2) == 0);
+  /* If utimens truncates to worse resolution than the file system
+     supports, then time can appear to go backwards between now and a
+     follow-up utimens with UTIME_NOW or a NULL timespec.  Use
+     UTIMECMP_TRUNCATE_SOURCE to compensate, with st1 as the
+     source.  */
+  ASSERT (0 <= utimecmp (BASE "file", &st2, &st1, UTIMECMP_TRUNCATE_SOURCE));
+  if (check_ctime)
+    ASSERT (ctime_compare (&st1, &st2) < 0);
+  {
+    /* On some NFS systems, the 'now' timestamp of creat or a NULL
+       timespec is determined by the server, but the 'now' timestamp
+       determined by gettime() (as is done when using UTIME_NOW) is
+       determined by the client; since the two machines are not
+       necessarily on the same clock, this is another case where time
+       can appear to go backwards.  The rest of this test cares about
+       client time, so manually use gettime() to set both times.  */
+    struct timespec ts[2];
+    gettime (&ts[0]);
+    ts[1] = ts[0];
+    ASSERT (func (fd, ts) == 0);
+    ASSERT (fstat (fd, &st1) == 0);
+    nap ();
+  }
+
+  /* Invalid arguments.  */
+  {
+    errno = 0;
+    ASSERT (func (AT_FDCWD, NULL) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    errno = 0;
+    ASSERT (func (-1, NULL) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (func (99, NULL) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    int fd0 = dup (0);
+    ASSERT (0 <= fd0);
+    ASSERT (close (fd0) == 0);
+    errno = 0;
+    ASSERT (func (fd0, NULL) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    struct timespec ts[2];
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = UTIME_BOGUS_POS;
+    ts[1].tv_sec = Y2K;
+    ts[1].tv_nsec = 0;
+    errno = 0;
+    ASSERT (func (fd, ts) == -1);
+    ASSERT (errno == EINVAL);
+  }
+  {
+    struct timespec ts[2];
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = 0;
+    ts[1].tv_sec = Y2K;
+    ts[1].tv_nsec = UTIME_BOGUS_NEG;
+    errno = 0;
+    ASSERT (func (fd, ts) == -1);
+    ASSERT (errno == EINVAL);
+  }
+  ASSERT (fstat (fd, &st2) == 0);
+  ASSERT (st1.st_atime == st2.st_atime);
+  ASSERT (get_stat_atime_ns (&st1) == get_stat_atime_ns (&st2));
+  ASSERT (utimecmp (BASE "file", &st1, &st2, 0) == 0);
+
+  /* Set both times.  */
+  {
+    struct timespec ts[2];
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = BILLION / 2 - 1;
+    ts[1].tv_sec = Y2K;
+    ts[1].tv_nsec = BILLION - 1;
+    ASSERT (func (fd, ts) == 0);
+    ASSERT (fstat (fd, &st2) == 0);
+    ASSERT (st2.st_atime == Y2K);
+    ASSERT (0 <= get_stat_atime_ns (&st2));
+    ASSERT (get_stat_atime_ns (&st2) < BILLION / 2);
+    ASSERT (st2.st_mtime == Y2K);
+    ASSERT (0 <= get_stat_mtime_ns (&st2));
+    ASSERT (get_stat_mtime_ns (&st2) < BILLION);
+    if (check_ctime)
+      ASSERT (ctime_compare (&st1, &st2) < 0);
+  }
+
+  /* Play with UTIME_OMIT, UTIME_NOW.  */
+  {
+    struct stat st3;
+    struct timespec ts[2];
+    ts[0].tv_sec = BILLION;
+    ts[0].tv_nsec = UTIME_OMIT;
+    ts[1].tv_sec = 0;
+    ts[1].tv_nsec = UTIME_NOW;
+    nap ();
+    ASSERT (func (fd, ts) == 0);
+    ASSERT (fstat (fd, &st3) == 0);
+    ASSERT (st3.st_atime == Y2K);
+    ASSERT (0 <= get_stat_atime_ns (&st3));
+    ASSERT (get_stat_atime_ns (&st3) <= BILLION / 2);
+    ASSERT (utimecmp (BASE "file", &st1, &st3, 0) <= 0);
+    if (check_ctime)
+      ASSERT (ctime_compare (&st2, &st3) < 0);
+    nap ();
+    ts[0].tv_nsec = 0;
+    ts[1].tv_nsec = UTIME_OMIT;
+    ASSERT (func (fd, ts) == 0);
+    ASSERT (fstat (fd, &st2) == 0);
+    ASSERT (st2.st_atime == BILLION);
+    ASSERT (get_stat_atime_ns (&st2) == 0);
+    ASSERT (st3.st_mtime == st2.st_mtime);
+    ASSERT (get_stat_mtime_ns (&st3) == get_stat_mtime_ns (&st2));
+    if (check_ctime)
+      ASSERT (ctime_compare (&st3, &st2) < 0);
+  }
+
+  /* Cleanup.  */
+  ASSERT (close (fd) == 0);
+  ASSERT (unlink (BASE "file") == 0);
+  return 0;
+}
diff --git a/gnulib-tests/test-fwrite.c b/gnulib-tests/test-fwrite.c
new file mode 100644
index 0000000..9ff0d07
--- /dev/null
+++ b/gnulib-tests/test-fwrite.c
@@ -0,0 +1,96 @@
+/* Test of fwrite() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fwrite, size_t, (const void *, size_t, size_t, FILE *));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  const char *filename = "test-fwrite.txt";
+
+  /* We don't have an fwrite() function that installs an invalid parameter
+     handler so far.  So install that handler here, explicitly.  */
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
+    && MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
+  gl_msvc_inval_ensure_handler ();
+#endif
+
+  /* Test that fwrite() on an unbuffered stream sets errno if someone else
+     closes the stream fd behind the back of stdio.  */
+  {
+    FILE *fp = fopen (filename, "w");
+    char buf[5] = "world";
+    ASSERT (fp != NULL);
+    setvbuf (fp, NULL, _IONBF, 0);
+    ASSERT (close (fileno (fp)) == 0);
+    errno = 0;
+    ASSERT (fwrite (buf, 1, sizeof (buf), fp) == 0);
+    ASSERT (errno == EBADF);
+    ASSERT (ferror (fp));
+    fclose (fp);
+  }
+
+  /* Test that fwrite() on an unbuffered stream sets errno if the stream
+     was constructed with an invalid file descriptor.  */
+  {
+    FILE *fp = fdopen (-1, "w");
+    if (fp != NULL)
+      {
+        char buf[5] = "world";
+        setvbuf (fp, NULL, _IONBF, 0);
+        errno = 0;
+        ASSERT (fwrite (buf, 1, sizeof (buf), fp) == 0);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+  {
+    FILE *fp;
+    close (99);
+    fp = fdopen (99, "w");
+    if (fp != NULL)
+      {
+        char buf[5] = "world";
+        setvbuf (fp, NULL, _IONBF, 0);
+        errno = 0;
+        ASSERT (fwrite (buf, 1, sizeof (buf), fp) == 0);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+
+  /* Clean up.  */
+  unlink (filename);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-getaddrinfo.c b/gnulib-tests/test-getaddrinfo.c
new file mode 100644
index 0000000..5b439a9
--- /dev/null
+++ b/gnulib-tests/test-getaddrinfo.c
@@ -0,0 +1,178 @@
+/* Test the getaddrinfo module.
+
+   Copyright (C) 2006-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson.  */
+
+#include <config.h>
+
+#include <netdb.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (gai_strerror, char const *, (int));
+/* On native Windows, these two functions may have the __stdcall calling
+   convention.  But the SIGNATURE_CHECK works only for functions with __cdecl
+   calling convention.  */
+#if !(defined _WIN32 && !defined __CYGWIN__)
+SIGNATURE_CHECK (freeaddrinfo, void, (struct addrinfo *));
+SIGNATURE_CHECK (getaddrinfo, int, (char const *, char const *,
+                                    struct addrinfo const *,
+                                    struct addrinfo **));
+#endif
+
+#include <arpa/inet.h>
+#include <errno.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "sockets.h"
+
+/* Whether to print debugging messages.  */
+#define ENABLE_DEBUGGING 0
+
+#if ENABLE_DEBUGGING
+# define dbgprintf printf
+#else
+# define dbgprintf if (0) printf
+#endif
+
+/* BeOS does not have AF_UNSPEC.  */
+#ifndef AF_UNSPEC
+# define AF_UNSPEC 0
+#endif
+
+#ifndef EAI_SERVICE
+# define EAI_SERVICE 0
+#endif
+
+static int
+simple (char const *host, char const *service)
+{
+  char buf[BUFSIZ];
+  static int skip = 0;
+  struct addrinfo hints;
+  struct addrinfo *ai0, *ai;
+  int res;
+  int err;
+
+  /* Once we skipped the test, do not try anything else */
+  if (skip)
+    return 0;
+
+  dbgprintf ("Finding %s service %s...\n", host, service);
+
+  /* This initializes "hints" but does not use it.  Is there a reason
+     for this?  If so, please fix this comment.  */
+  memset (&hints, 0, sizeof (hints));
+  hints.ai_flags = AI_CANONNAME;
+  hints.ai_family = AF_UNSPEC;
+  hints.ai_socktype = SOCK_STREAM;
+
+  res = getaddrinfo (host, service, 0, &ai0);
+  err = errno;
+
+  dbgprintf ("res %d: %s\n", res, gai_strerror (res));
+
+  if (res != 0)
+    {
+      /* EAI_AGAIN is returned if no network is available. Don't fail
+         the test merely because someone is down the country on their
+         in-law's farm. */
+      if (res == EAI_AGAIN)
+        {
+          skip++;
+          fprintf (stderr, "skipping getaddrinfo test: no network?\n");
+          return 77;
+        }
+      /* IRIX reports EAI_NONAME for "https".  Don't fail the test
+         merely because of this.  */
+      if (res == EAI_NONAME)
+        return 0;
+      /* Solaris reports EAI_SERVICE for "http" and "https".  Don't
+         fail the test merely because of this.  */
+      if (res == EAI_SERVICE)
+        return 0;
+#ifdef EAI_NODATA
+      /* AIX reports EAI_NODATA for "https".  Don't fail the test
+         merely because of this.  */
+      if (res == EAI_NODATA)
+        return 0;
+#endif
+      /* Provide details if errno was set.  */
+      if (res == EAI_SYSTEM)
+        fprintf (stderr, "system error: %s\n", strerror (err));
+
+      return 1;
+    }
+
+  for (ai = ai0; ai; ai = ai->ai_next)
+    {
+      void *ai_addr = ai->ai_addr;
+      struct sockaddr_in *sock_addr = ai_addr;
+      dbgprintf ("\tflags %x\n", ai->ai_flags + 0u);
+      dbgprintf ("\tfamily %x\n", ai->ai_family + 0u);
+      dbgprintf ("\tsocktype %x\n", ai->ai_socktype + 0u);
+      dbgprintf ("\tprotocol %x\n", ai->ai_protocol + 0u);
+      dbgprintf ("\taddrlen %lu: ", (unsigned long) ai->ai_addrlen);
+      dbgprintf ("\tFound %s\n",
+                 inet_ntop (ai->ai_family,
+                            &sock_addr->sin_addr,
+                            buf, sizeof (buf) - 1));
+      if (ai->ai_canonname)
+        dbgprintf ("\tFound %s...\n", ai->ai_canonname);
+
+      {
+        char ipbuf[BUFSIZ];
+        char portbuf[BUFSIZ];
+
+        res = getnameinfo (ai->ai_addr, ai->ai_addrlen,
+                           ipbuf, sizeof (ipbuf) - 1,
+                           portbuf, sizeof (portbuf) - 1,
+                           NI_NUMERICHOST|NI_NUMERICSERV);
+        dbgprintf ("\t\tgetnameinfo %d: %s\n", res, gai_strerror (res));
+        if (res == 0)
+          {
+            dbgprintf ("\t\tip %s\n", ipbuf);
+            dbgprintf ("\t\tport %s\n", portbuf);
+          }
+      }
+
+    }
+
+  freeaddrinfo (ai0);
+
+  return 0;
+}
+
+#define HOST1 "www.gnu.org"
+#define SERV1 "http"
+#define HOST2 "www.ibm.com"
+#define SERV2 "https"
+#define HOST3 "microsoft.com"
+#define SERV3 "http"
+#define HOST4 "google.org"
+#define SERV4 "ldap"
+
+int main (void)
+{
+  (void) gl_sockets_startup (SOCKETS_1_1);
+
+  return simple (HOST1, SERV1)
+    + simple (HOST2, SERV2)
+    + simple (HOST3, SERV3)
+    + simple (HOST4, SERV4);
+}
diff --git a/gnulib-tests/test-getcwd-lgpl.c b/gnulib-tests/test-getcwd-lgpl.c
new file mode 100644
index 0000000..fdf0afd
--- /dev/null
+++ b/gnulib-tests/test-getcwd-lgpl.c
@@ -0,0 +1,102 @@
+/* Test of getcwd() function.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (getcwd, char *, (char *, size_t));
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  char *pwd1;
+  char *pwd2;
+  /* If the user provides an argument, attempt to chdir there first.  */
+  if (1 < argc)
+    {
+      if (chdir (argv[1]) == 0)
+        printf ("changed to directory %s\n", argv[1]);
+    }
+
+  pwd1 = getcwd (NULL, 0);
+  ASSERT (pwd1 && *pwd1);
+  if (1 < argc)
+    printf ("cwd=%s\n", pwd1);
+
+  /* Make sure the result is usable.  */
+  ASSERT (chdir (pwd1) == 0);
+  ASSERT (chdir (".//./.") == 0);
+
+  /* Make sure that result is normalized.  */
+  pwd2 = getcwd (NULL, 0);
+  ASSERT (pwd2);
+  ASSERT (strcmp (pwd1, pwd2) == 0);
+  free (pwd2);
+  {
+    size_t len = strlen (pwd1);
+    ssize_t i = len - 10;
+    if (i < 1)
+      i = 1;
+    pwd2 = getcwd (NULL, len + 1);
+    ASSERT (pwd2);
+    free (pwd2);
+    pwd2 = malloc (len + 2);
+    for ( ; i <= len; i++)
+      {
+        char *tmp;
+        errno = 0;
+        ASSERT (getcwd (pwd2, i) == NULL);
+        ASSERT (errno == ERANGE);
+        /* Allow either glibc or BSD behavior, since POSIX allows both.  */
+        errno = 0;
+        tmp = getcwd (NULL, i);
+        if (tmp)
+          {
+            ASSERT (strcmp (pwd1, tmp) == 0);
+            free (tmp);
+          }
+        else
+          {
+            ASSERT (errno == ERANGE);
+          }
+      }
+    ASSERT (getcwd (pwd2, len + 1) == pwd2);
+    pwd2[len] = '/';
+    pwd2[len + 1] = '\0';
+  }
+  ASSERT (strstr (pwd2, "/./") == NULL);
+  ASSERT (strstr (pwd2, "/../") == NULL);
+  ASSERT (strstr (pwd2 + 1 + (pwd2[1] == '/'), "//") == NULL);
+
+  /* Validate a POSIX requirement on size.  */
+  errno = 0;
+  ASSERT (getcwd(pwd2, 0) == NULL);
+  ASSERT (errno == EINVAL);
+
+  free (pwd1);
+  free (pwd2);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-getcwd.c b/gnulib-tests/test-getcwd.c
new file mode 100644
index 0000000..e1df1ff
--- /dev/null
+++ b/gnulib-tests/test-getcwd.c
@@ -0,0 +1,260 @@
+/* Test of getcwd() function.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#include "pathmax.h"
+#include "macros.h"
+
+#if ! HAVE_GETPAGESIZE
+# define getpagesize() 0
+#endif
+
+/* This size is chosen to be larger than PATH_MAX (4k), yet smaller than
+   the 16kB pagesize on ia64 linux.  Those conditions make the code below
+   trigger a bug in glibc's getcwd implementation before 2.4.90-10.  */
+#define TARGET_LEN (5 * 1024)
+
+#if defined HAVE_OPENAT || (defined GNULIB_OPENAT && defined HAVE_FDOPENDIR)
+# define HAVE_OPENAT_SUPPORT 1
+#else
+# define HAVE_OPENAT_SUPPORT 0
+#endif
+
+/* Keep this test in sync with m4/getcwd-abort-bug.m4.  */
+static int
+test_abort_bug (void)
+{
+  char *cwd;
+  size_t initial_cwd_len;
+  int fail = 0;
+
+  /* The bug is triggered when PATH_MAX < getpagesize (), so skip
+     this relatively expensive and invasive test if that's not true.  */
+#ifdef PATH_MAX
+  int bug_possible = PATH_MAX < getpagesize ();
+#else
+  int bug_possible = 0;
+#endif
+  if (! bug_possible)
+    return 0;
+
+  cwd = getcwd (NULL, 0);
+  if (cwd == NULL)
+    return 2;
+
+  initial_cwd_len = strlen (cwd);
+  free (cwd);
+
+  if (HAVE_OPENAT_SUPPORT)
+    {
+      static char const dir_name[] = "confdir-14B---";
+      size_t desired_depth = ((TARGET_LEN - 1 - initial_cwd_len)
+                              / sizeof dir_name);
+      size_t d;
+      for (d = 0; d < desired_depth; d++)
+        {
+          if (mkdir (dir_name, S_IRWXU) < 0 || chdir (dir_name) < 0)
+            {
+              if (! (errno == ERANGE || errno == ENAMETOOLONG
+                     || errno == ENOENT))
+                fail = 3; /* Unable to construct deep hierarchy.  */
+              break;
+            }
+        }
+
+      /* If libc has the bug in question, this invocation of getcwd
+         results in a failed assertion.  */
+      cwd = getcwd (NULL, 0);
+      if (cwd == NULL)
+        fail = 4; /* getcwd didn't assert, but it failed for a long name
+                     where the answer could have been learned.  */
+      free (cwd);
+
+      /* Call rmdir first, in case the above chdir failed.  */
+      rmdir (dir_name);
+      while (0 < d--)
+        {
+          if (chdir ("..") < 0)
+            {
+              fail = 5;
+              break;
+            }
+          rmdir (dir_name);
+        }
+    }
+
+  return fail;
+}
+
+/* The length of this name must be 8.  */
+#define DIR_NAME "confdir3"
+#define DIR_NAME_LEN 8
+#define DIR_NAME_SIZE (DIR_NAME_LEN + 1)
+
+/* The length of "../".  */
+#define DOTDOTSLASH_LEN 3
+
+/* Leftover bytes in the buffer, to work around library or OS bugs.  */
+#define BUF_SLOP 20
+
+/* Keep this test in sync with m4/getcwd-path-max.m4.  */
+static int
+test_long_name (void)
+{
+#ifndef PATH_MAX
+  /* The Hurd doesn't define this, so getcwd can't exhibit the bug --
+     at least not on a local file system.  And if we were to start worrying
+     about remote file systems, we'd have to enable the wrapper function
+     all of the time, just to be safe.  That's not worth the cost.  */
+  return 0;
+#elif ((INT_MAX / (DIR_NAME_SIZE / DOTDOTSLASH_LEN + 1) \
+        - DIR_NAME_SIZE - BUF_SLOP) \
+       <= PATH_MAX)
+  /* FIXME: Assuming there's a system for which this is true,
+     this should be done in a compile test.  */
+  return 0;
+#else
+  char buf[PATH_MAX * (DIR_NAME_SIZE / DOTDOTSLASH_LEN + 1)
+           + DIR_NAME_SIZE + BUF_SLOP];
+  char *cwd = getcwd (buf, PATH_MAX);
+  size_t initial_cwd_len;
+  size_t cwd_len;
+  int fail = 0;
+  size_t n_chdirs = 0;
+
+  if (cwd == NULL)
+    return 1;
+
+  cwd_len = initial_cwd_len = strlen (cwd);
+
+  while (1)
+    {
+# ifdef HAVE_GETCWD_SHORTER
+      /* On OS/X <= 10.9 for example, we're restricted to shorter paths
+         as lstat() doesn't support more than PATH_MAX.  */
+      size_t dotdot_max = PATH_MAX * 2;
+# else
+      size_t dotdot_max = PATH_MAX * (DIR_NAME_SIZE / DOTDOTSLASH_LEN);
+# endif
+      char *c = NULL;
+
+      cwd_len += DIR_NAME_SIZE;
+      /* If mkdir or chdir fails, it could be that this system cannot create
+         any file with an absolute name longer than PATH_MAX, such as cygwin.
+         If so, leave fail as 0, because the current working directory can't
+         be too long for getcwd if it can't even be created.  On Linux with
+         the 9p file system, mkdir fails with error EINVAL when cwd_len gets
+         too long; ignore this failure because the getcwd() system call
+         produces good results whereas the gnulib substitute calls getdents64
+         which fails with error EPROTO.
+         For other errors, be pessimistic and consider that as a failure,
+         too.  */
+      if (mkdir (DIR_NAME, S_IRWXU) < 0 || chdir (DIR_NAME) < 0)
+        {
+          if (! (errno == ERANGE || errno == ENAMETOOLONG || errno == ENOENT))
+            #ifdef __linux__
+            if (! (errno == EINVAL))
+            #endif
+              fail = 2;
+          break;
+        }
+
+      if (PATH_MAX <= cwd_len && cwd_len < PATH_MAX + DIR_NAME_SIZE)
+        {
+          c = getcwd (buf, PATH_MAX);
+          if (!c && errno == ENOENT)
+            {
+              fail = 3;
+              break;
+            }
+          if (c)
+            {
+              fail = 4;
+              break;
+            }
+          if (! (errno == ERANGE || errno == ENAMETOOLONG))
+            {
+              fail = 5;
+              break;
+            }
+        }
+
+      if (dotdot_max <= cwd_len - initial_cwd_len)
+        {
+          if (dotdot_max + DIR_NAME_SIZE < cwd_len - initial_cwd_len)
+            break;
+          c = getcwd (buf, cwd_len + 1);
+          if (!c)
+            {
+              if (! (errno == ERANGE || errno == ENOENT
+                     || errno == ENAMETOOLONG))
+                {
+                  fail = 6;
+                  break;
+                }
+              if (HAVE_OPENAT_SUPPORT || errno == ERANGE || errno == ENOENT)
+                {
+                  fail = 7;
+                  break;
+                }
+            }
+        }
+
+      if (c && strlen (c) != cwd_len)
+        {
+          fail = 8;
+          break;
+        }
+      ++n_chdirs;
+    }
+
+  /* Leaving behind such a deep directory is not polite.
+     So clean up here, right away, even though the driving
+     shell script would also clean up.  */
+  {
+    size_t i;
+
+    /* Try rmdir first, in case the chdir failed.  */
+    rmdir (DIR_NAME);
+    for (i = 0; i <= n_chdirs; i++)
+      {
+        if (chdir ("..") < 0)
+          break;
+        if (rmdir (DIR_NAME) != 0)
+          break;
+      }
+  }
+
+  return fail;
+#endif
+}
+
+int
+main (int argc, char **argv)
+{
+  return test_abort_bug () * 10 + test_long_name ();
+}
diff --git a/gnulib-tests/test-getcwd.sh b/gnulib-tests/test-getcwd.sh
new file mode 100755
index 0000000..64a3c7c
--- /dev/null
+++ b/gnulib-tests/test-getcwd.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+
+${CHECKER} test-getcwd
+
+Exit $?
diff --git a/gnulib-tests/test-getdelim.c b/gnulib-tests/test-getdelim.c
new file mode 100644
index 0000000..3ce7ccc
--- /dev/null
+++ b/gnulib-tests/test-getdelim.c
@@ -0,0 +1,94 @@
+/* Test of getdelim() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (getdelim, ssize_t, (char **, size_t *, int, FILE *));
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  FILE *f;
+  char *line;
+  size_t len;
+  ssize_t result;
+
+  /* Create test file.  */
+  f = fopen ("test-getdelim.txt", "wb");
+  if (!f || fwrite ("anAnbcnd\0f", 1, 10, f) != 10 || fclose (f) != 0)
+    {
+      fputs ("Failed to create sample file.\n", stderr);
+      remove ("test-getdelim.txt");
+      return 1;
+    }
+  f = fopen ("test-getdelim.txt", "rb");
+  if (!f)
+    {
+      fputs ("Failed to reopen sample file.\n", stderr);
+      remove ("test-getdelim.txt");
+      return 1;
+    }
+
+  /* Test initial allocation, which must include trailing NUL.  */
+  line = NULL;
+  len = 0;
+  result = getdelim (&line, &len, 'n', f);
+  ASSERT (result == 2);
+  ASSERT (strcmp (line, "an") == 0);
+  ASSERT (2 < len);
+  free (line);
+
+  /* Test initial allocation again, with line = NULL and len != 0.  */
+  line = NULL;
+  len = (size_t)(~0) / 4;
+  result = getdelim (&line, &len, 'n', f);
+  ASSERT (result == 2);
+  ASSERT (strcmp (line, "An") == 0);
+  ASSERT (2 < len);
+  free (line);
+
+  /* Test growth of buffer.  */
+  line = malloc (1);
+  len = 1;
+  result = getdelim (&line, &len, 'n', f);
+  ASSERT (result == 3);
+  ASSERT (strcmp (line, "bcn") == 0);
+  ASSERT (3 < len);
+
+  /* Test embedded NULs and EOF behavior.  */
+  result = getdelim (&line, &len, 'n', f);
+  ASSERT (result == 3);
+  ASSERT (memcmp (line, "d\0f", 4) == 0);
+  ASSERT (3 < len);
+
+  result = getdelim (&line, &len, 'n', f);
+  ASSERT (result == -1);
+
+  free (line);
+  fclose (f);
+  remove ("test-getdelim.txt");
+  return 0;
+}
diff --git a/gnulib-tests/test-getdtablesize.c b/gnulib-tests/test-getdtablesize.c
new file mode 100644
index 0000000..bf00fb4
--- /dev/null
+++ b/gnulib-tests/test-getdtablesize.c
@@ -0,0 +1,36 @@
+/* Test of getdtablesize() function.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (getdtablesize, int, (void));
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  ASSERT (getdtablesize () >= 3);
+  ASSERT (dup2 (0, getdtablesize() - 1) == getdtablesize () - 1);
+  ASSERT (dup2 (0, getdtablesize()) == -1);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-getgroups.c b/gnulib-tests/test-getgroups.c
new file mode 100644
index 0000000..5c7bc5c
--- /dev/null
+++ b/gnulib-tests/test-getgroups.c
@@ -0,0 +1,79 @@
+/* Tests of getgroups.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (getgroups, int, (int, gid_t[]));
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#include "macros.h"
+
+int
+main (int argc, char **argv _GL_UNUSED)
+{
+  int result;
+  gid_t *groups;
+
+  errno = 0;
+  result = getgroups (0, NULL);
+  if (result == -1 && errno == ENOSYS)
+    {
+      fputs ("skipping test: no support for groups\n", stderr);
+      return 77;
+    }
+  ASSERT (0 <= result);
+  ASSERT (result + 1 < SIZE_MAX / sizeof *groups);
+  groups = malloc ((result + 1) * sizeof *groups);
+  ASSERT (groups);
+  groups[result] = -1;
+  /* Check for EINVAL handling.  Not all processes have supplemental
+     groups, and getgroups does not have to return the effective gid,
+     so a result of 0 is reasonable.  Also, we can't test for EINVAL
+     if result is 1, because of how getgroups treats 0.  */
+  if (1 < result)
+    {
+      errno = 0;
+      ASSERT (getgroups (result - 1, groups) == -1);
+      ASSERT (errno == EINVAL);
+    }
+  ASSERT (getgroups (result, groups) == result);
+  ASSERT (getgroups (result + 1, groups) == result);
+  ASSERT (groups[result] == -1);
+  errno = 0;
+  ASSERT (getgroups (-1, NULL) == -1);
+  ASSERT (errno == EINVAL);
+
+  /* The automated unit test, with no arguments, ends here.  However,
+     for debugging purposes, you can pass a command-line argument to
+     list the returned groups.  */
+  if (1 < argc)
+    {
+      int i;
+      for (i = 0; i < result; i++)
+        printf ("%d\n", (int) groups[i]);
+    }
+  free (groups);
+  return 0;
+}
diff --git a/gnulib-tests/test-gethostname.c b/gnulib-tests/test-gethostname.c
new file mode 100644
index 0000000..74fd1dc
--- /dev/null
+++ b/gnulib-tests/test-gethostname.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2008-2020 Free Software Foundation, Inc.
+ * Written by Simon Josefsson.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Get gethostname() declaration.  */
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (gethostname, int, (char *, size_t));
+
+/* Get HOST_NAME_MAX definition.  */
+#include <limits.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#define NOHOSTNAME "magic-gnulib-test-string"
+
+int
+main (int argc, char *argv[] _GL_UNUSED)
+{
+  char buf[HOST_NAME_MAX];
+  int rc;
+
+  if (strlen (NOHOSTNAME) >= HOST_NAME_MAX)
+    {
+      printf ("HOST_NAME_MAX impossibly small?! %d\n", HOST_NAME_MAX);
+      return 2;
+    }
+
+  strcpy (buf, NOHOSTNAME);
+
+  rc = gethostname (buf, sizeof (buf));
+
+  if (rc != 0)
+    {
+      printf ("gethostname failed, rc %d errno %d\n", rc, errno);
+      return 1;
+    }
+
+  if (strcmp (buf, NOHOSTNAME) == 0)
+    {
+      printf ("gethostname left buffer untouched.\n");
+      return 1;
+    }
+
+  if (argc > 1)
+    printf ("hostname: %s\n", buf);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-getline.c b/gnulib-tests/test-getline.c
new file mode 100644
index 0000000..3e7a4b7
--- /dev/null
+++ b/gnulib-tests/test-getline.c
@@ -0,0 +1,94 @@
+/* Test of getline() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (getline, ssize_t, (char **, size_t *, FILE *));
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  FILE *f;
+  char *line;
+  size_t len;
+  ssize_t result;
+
+  /* Create test file.  */
+  f = fopen ("test-getline.txt", "wb");
+  if (!f || fwrite ("a\nA\nbc\nd\0f", 1, 10, f) != 10 || fclose (f) != 0)
+    {
+      fputs ("Failed to create sample file.\n", stderr);
+      remove ("test-getline.txt");
+      return 1;
+    }
+  f = fopen ("test-getline.txt", "rb");
+  if (!f)
+    {
+      fputs ("Failed to reopen sample file.\n", stderr);
+      remove ("test-getline.txt");
+      return 1;
+    }
+
+  /* Test initial allocation, which must include trailing NUL.  */
+  line = NULL;
+  len = 0;
+  result = getline (&line, &len, f);
+  ASSERT (result == 2);
+  ASSERT (strcmp (line, "a\n") == 0);
+  ASSERT (2 < len);
+  free (line);
+
+  /* Test initial allocation again, with line = NULL and len != 0.  */
+  line = NULL;
+  len = (size_t)(~0) / 4;
+  result = getline (&line, &len, f);
+  ASSERT (result == 2);
+  ASSERT (strcmp (line, "A\n") == 0);
+  ASSERT (2 < len);
+  free (line);
+
+  /* Test growth of buffer, must not leak.  */
+  len = 1;
+  line = malloc (len);
+  result = getline (&line, &len, f);
+  ASSERT (result == 3);
+  ASSERT (strcmp (line, "bc\n") == 0);
+  ASSERT (3 < len);
+
+  /* Test embedded NULs and EOF behavior.  */
+  result = getline (&line, &len, f);
+  ASSERT (result == 3);
+  ASSERT (memcmp (line, "d\0f", 4) == 0);
+  ASSERT (3 < len);
+
+  result = getline (&line, &len, f);
+  ASSERT (result == -1);
+
+  free (line);
+  fclose (f);
+  remove ("test-getline.txt");
+  return 0;
+}
diff --git a/gnulib-tests/test-getloadavg.c b/gnulib-tests/test-getloadavg.c
new file mode 100644
index 0000000..daf443b
--- /dev/null
+++ b/gnulib-tests/test-getloadavg.c
@@ -0,0 +1,83 @@
+/* Test of getting load average.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (getloadavg, int, (double [], int));
+
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+
+static void
+check_avg (int minutes, double avg, int printit)
+{
+  if (printit)
+    printf ("%d-minute: %f  ", minutes, avg);
+  else
+    {
+      /* Plausibility checks.  */
+      if (avg < 0.01)
+        printf ("suspiciously low %d-minute average: %f\n", minutes, avg);
+      if (avg > 1000000)
+        printf ("suspiciously high %d-minute average: %f\n", minutes, avg);
+    }
+  if (avg < 0 || avg != avg)
+    exit (minutes);
+}
+
+/* This program can also be used as a manual test, by invoking it with
+   an argument; it then prints the load average.  If the argument is
+   nonzero, the manual test repeats forever, sleeping for the stated
+   interval between each iteration.  */
+int
+main (int argc, char **argv)
+{
+  int naptime = 0;
+
+  if (argc > 1)
+    naptime = atoi (argv[1]);
+
+  while (1)
+    {
+      double avg[3];
+      int loads = getloadavg (avg, 3);
+      if (loads == -1)
+        {
+          if (! (errno == ENOSYS || errno == ENOTSUP || errno == ENOENT))
+            return 1;
+          perror ("Skipping test; load average not supported");
+          return 77;
+        }
+      if (loads > 0)
+        check_avg (1, avg[0], argc > 1);
+      if (loads > 1)
+        check_avg (5, avg[1], argc > 1);
+      if (loads > 2)
+        check_avg (15, avg[1], argc > 1);
+      if (loads > 0 && argc > 1)
+        putchar ('\n');
+
+      if (naptime == 0)
+        break;
+      sleep (naptime);
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-getlogin.c b/gnulib-tests/test-getlogin.c
new file mode 100644
index 0000000..a3048f2
--- /dev/null
+++ b/gnulib-tests/test-getlogin.c
@@ -0,0 +1,38 @@
+/* Test of getting user name.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible and Paul Eggert.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (getlogin, char *, (void));
+
+#include "test-getlogin.h"
+
+int
+main (void)
+{
+  /* Test value.  */
+  char *buf = getlogin ();
+  int err = buf ? 0 : errno;
+  ASSERT (buf || err);
+  test_getlogin_result (buf, err);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-getlogin.h b/gnulib-tests/test-getlogin.h
new file mode 100644
index 0000000..0939015
--- /dev/null
+++ b/gnulib-tests/test-getlogin.h
@@ -0,0 +1,92 @@
+/* Test of getting user name.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible and Paul Eggert.  */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#if !(defined _WIN32 && !defined __CYGWIN__)
+# include <pwd.h>
+#endif
+
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "macros.h"
+
+static void
+test_getlogin_result (const char *buf, int err)
+{
+  if (err != 0)
+    {
+      if (err == ENOENT)
+        {
+          /* This can happen on GNU/Linux.  */
+          fprintf (stderr, "Skipping test: no entry in utmp file.\n");
+          exit (77);
+        }
+
+      /* It fails when stdin is not connected to a tty.  */
+      ASSERT (err == ENOTTY
+              || err == EINVAL /* seen on Linux/SPARC */
+              || err == ENXIO
+             );
+#if !defined __hpux /* On HP-UX 11.11 it fails anyway.  */
+      ASSERT (! isatty (0));
+#endif
+      fprintf (stderr, "Skipping test: stdin is not a tty.\n");
+      exit (77);
+    }
+
+  /* Compare against the value from the environment.  */
+#if !(defined _WIN32 && !defined __CYGWIN__)
+  /* Unix platform */
+  {
+    struct stat stat_buf;
+    struct passwd *pwd;
+
+    if (!isatty (STDIN_FILENO))
+      {
+         fprintf (stderr, "Skipping test: stdin is not a tty.\n");
+         exit (77);
+      }
+
+    ASSERT (fstat (STDIN_FILENO, &stat_buf) == 0);
+
+    pwd = getpwnam (buf);
+    if (! pwd)
+      {
+        fprintf (stderr, "Skipping test: %s: no such user\n", buf);
+        exit (77);
+      }
+
+    ASSERT (pwd->pw_uid == stat_buf.st_uid);
+  }
+#endif
+#if defined _WIN32 && !defined __CYGWIN__
+  /* Native Windows platform.
+     Note: This test would fail on Cygwin in an ssh session, because sshd
+     sets USERNAME=SYSTEM.  */
+  {
+    const char *name = getenv ("USERNAME");
+    if (name != NULL && name[0] != '\0')
+      ASSERT (strcmp (buf, name) == 0);
+  }
+#endif
+}
diff --git a/gnulib-tests/test-getndelim2.c b/gnulib-tests/test-getndelim2.c
new file mode 100644
index 0000000..e7dbf64
--- /dev/null
+++ b/gnulib-tests/test-getndelim2.c
@@ -0,0 +1,151 @@
+/* Test of getndelim2() function.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2008.  */
+
+#include <config.h>
+
+#include "getndelim2.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  FILE *f;
+  char *line = NULL;
+  size_t len = 0;
+  ssize_t result;
+
+  /* Create test file.  */
+  f = fopen ("test-getndelim2.txt", "wb+");
+  if (!f || fwrite ("a\nbc\nd\0f", 1, 8, f) != 8)
+    {
+      fputs ("Failed to create sample file.\n", stderr);
+      remove ("test-getndelim2.txt");
+      return 1;
+    }
+  rewind (f);
+
+  /* Unlimited lines.  */
+
+  /* Test initial allocation, which must include trailing NUL.  */
+  result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, '\n', '\n', f);
+  ASSERT (result == 2);
+  ASSERT (strcmp (line, "a\n") == 0);
+  ASSERT (2 < len);
+
+  /* Test growth of buffer, must not leak.  */
+  free (line);
+  line = malloc (1);
+  len = 0;
+  result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, EOF, '\n', f);
+  ASSERT (result == 3);
+  ASSERT (strcmp (line, "bc\n") == 0);
+  ASSERT (3 < len);
+
+  /* Test embedded NULs and EOF behavior.  */
+  result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, '\n', EOF, f);
+  ASSERT (result == 3);
+  ASSERT (memcmp (line, "d\0f", 4) == 0);
+  ASSERT (3 < len);
+
+  result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, '\n', EOF, f);
+  ASSERT (result == -1);
+
+  /* Using offset and nmax.  */
+
+  /* Limit growth to four bytes, including NUL, but parse to next 'd'.  */
+  free (line);
+  rewind (f);
+  line = malloc (8);
+  memset (line, 'e', 8);
+  len = 8;
+  result = getndelim2 (&line, &len, 6, 10, 'd', 'd', f);
+  ASSERT (result == 3);
+  ASSERT (10 == len);
+  ASSERT (strcmp (line, "eeeeeea\nb") == 0);
+
+  /* No change if offset larger than limit.  */
+  result = getndelim2 (&line, &len, len, 1, EOF, EOF, f);
+  ASSERT (result == -1);
+  ASSERT (10 == len);
+  ASSERT (strcmp (line, "eeeeeea\nb") == 0);
+
+  /* Consume to end of file, including embedded NUL.  */
+  result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, EOF, EOF, f);
+  ASSERT (result == 2);
+  ASSERT (10 == len);
+  ASSERT (memcmp (line, "\0f\0eeea\nb", 10) == 0);
+
+  result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, '\n', '\r', f);
+  ASSERT (result == -1);
+
+  /* Larger file size.  */
+  rewind (f);
+  {
+    int i;
+    for (i = 0; i < 16; i++)
+      fprintf (f, "%500x%c", i + 0u, i % 2 ? '\n' : '\r');
+  }
+  rewind (f);
+  {
+    char buffer[502];
+
+    result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, '\n', '\r', f);
+    ASSERT (result == 501);
+    ASSERT (501 < len);
+    memset (buffer, ' ', 499);
+    buffer[499] = '0';
+    buffer[500] = '\r';
+    buffer[501] = '\0';
+    ASSERT (strcmp (buffer, line) == 0);
+
+    result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, '\n', '\r', f);
+    ASSERT (result == 501);
+    ASSERT (501 < len);
+    buffer[499] = '1';
+    buffer[500] = '\n';
+    ASSERT (strcmp (buffer, line) == 0);
+
+    result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, 'g', 'f', f);
+    ASSERT (result == 501 * 14 - 1);
+    ASSERT (501 * 14 <= len);
+    buffer[499] = 'f';
+    buffer[500] = '\0';
+    ASSERT (strcmp (buffer, line + 501 * 13) == 0);
+
+    result = getndelim2 (&line, &len, 501 * 14 - 1, GETNLINE_NO_LIMIT,
+                         EOF, EOF, f);
+    ASSERT (result == 1);
+    buffer[500] = '\n';
+    ASSERT (strcmp (buffer, line + 501 * 13) == 0);
+
+    result = getndelim2 (&line, &len, 501 * 14 - 1, GETNLINE_NO_LIMIT,
+                         EOF, EOF, f);
+    buffer[500] = '\0';
+    ASSERT (strcmp (buffer, line + 501 * 13) == 0);
+    ASSERT (result == -1);
+  }
+
+  fclose (f);
+  remove ("test-getndelim2.txt");
+  return 0;
+}
diff --git a/gnulib-tests/test-getopt-gnu.c b/gnulib-tests/test-getopt-gnu.c
new file mode 100644
index 0000000..34db5ae
--- /dev/null
+++ b/gnulib-tests/test-getopt-gnu.c
@@ -0,0 +1,45 @@
+/* Test of command line argument processing.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+/* None of the files accessed by this test are large, so disable the
+   ftell link warning if we are not using the gnulib ftell module.  */
+#define _GL_NO_LARGE_FILES
+
+/* POSIX and glibc provide the getopt() function in <unistd.h>, see
+   https://pubs.opengroup.org/onlinepubs/9699919799/functions/getopt.html
+   https://www.gnu.org/software/libc/manual/html_node/Using-Getopt.html
+   But gnulib provides the getopt() function in <getopt.h>, not in <unistd.h>.
+   This is what we are testing here.  */
+#include <getopt.h>
+
+#ifndef __getopt_argv_const
+# define __getopt_argv_const const
+#endif
+#include "signature.h"
+SIGNATURE_CHECK (getopt_long, int, (int, char *__getopt_argv_const *,
+                                    char const *, struct option const *,
+                                    int *));
+SIGNATURE_CHECK (getopt_long_only, int, (int, char *__getopt_argv_const *,
+                                         char const *, struct option const *,
+                                         int *));
+
+#define TEST_GETOPT_GNU 1
+#define TEST_GETOPT_TMP_NAME "test-getopt-gnu.tmp"
+#include "test-getopt-main.h"
diff --git a/gnulib-tests/test-getopt-main.h b/gnulib-tests/test-getopt-main.h
new file mode 100644
index 0000000..f3278cc
--- /dev/null
+++ b/gnulib-tests/test-getopt-main.h
@@ -0,0 +1,76 @@
+/* Test of command line argument processing.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include "signature.h"
+SIGNATURE_CHECK (getopt, int, (int, char * const[], char const *));
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/* This test intentionally remaps stderr.  So, we arrange to have fd 10
+   (outside the range of interesting fd's during the test) set up to
+   duplicate the original stderr.  */
+
+#define BACKUP_STDERR_FILENO 10
+#define ASSERT_STREAM myerr
+#include "macros.h"
+
+static FILE *myerr;
+
+#include "test-getopt.h"
+#if TEST_GETOPT_GNU
+# include "test-getopt_long.h"
+#endif
+
+int
+main (void)
+{
+   /* This test validates that stderr is used correctly, so move the
+      original into fd 10.  */
+  if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO
+      || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL)
+    return 2;
+
+  ASSERT (freopen (TEST_GETOPT_TMP_NAME, "w", stderr) == stderr);
+
+  /* These default values are required by POSIX.  */
+  ASSERT (optind == 1);
+  ASSERT (opterr != 0);
+
+  setenv ("POSIXLY_CORRECT", "1", 1);
+  test_getopt ();
+
+#if TEST_GETOPT_GNU
+  test_getopt_long_posix ();
+#endif
+
+  unsetenv ("POSIXLY_CORRECT");
+  test_getopt ();
+
+#if TEST_GETOPT_GNU
+  test_getopt_long ();
+  test_getopt_long_only ();
+#endif
+
+  ASSERT (fclose (stderr) == 0);
+  ASSERT (remove (TEST_GETOPT_TMP_NAME) == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-getopt-posix.c b/gnulib-tests/test-getopt-posix.c
new file mode 100644
index 0000000..10ed784
--- /dev/null
+++ b/gnulib-tests/test-getopt-posix.c
@@ -0,0 +1,34 @@
+/* Test of command line argument processing.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+/* None of the files accessed by this test are large, so disable the
+   ftell link warning if we are not using the gnulib ftell module.  */
+#define _GL_NO_LARGE_FILES
+
+/* POSIX and glibc provide the getopt() function in <unistd.h>, see
+   https://pubs.opengroup.org/onlinepubs/9699919799/functions/getopt.html
+   https://www.gnu.org/software/libc/manual/html_node/Using-Getopt.html
+   But gnulib provides the getopt() function in <getopt.h>, not in <unistd.h>.
+   Nevertheless the getopt() function should also be found in <unistd.h>.  */
+#include <unistd.h>
+
+#define TEST_GETOPT_GNU 0
+#define TEST_GETOPT_TMP_NAME "test-getopt-posix.tmp"
+#include "test-getopt-main.h"
diff --git a/gnulib-tests/test-getopt.h b/gnulib-tests/test-getopt.h
new file mode 100644
index 0000000..c9237b0
--- /dev/null
+++ b/gnulib-tests/test-getopt.h
@@ -0,0 +1,1391 @@
+/* Test of command line argument processing.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <stdbool.h>
+
+/* The glibc/gnulib implementation of getopt supports setting optind =
+   0, but not all other implementations do.  This matters for getopt.
+   But for getopt_long, we require GNU compatibility.  */
+#if defined __GETOPT_PREFIX || (__GLIBC__ >= 2 && !defined __UCLIBC__)
+# define OPTIND_MIN 0
+#elif HAVE_DECL_OPTRESET
+# define OPTIND_MIN (optreset = 1)
+#else
+# define OPTIND_MIN 1
+#endif
+
+static void
+getopt_loop (int argc, const char **argv,
+             const char *options,
+             int *a_seen, int *b_seen,
+             const char **p_value, const char **q_value,
+             int *non_options_count, const char **non_options,
+             int *unrecognized, bool *message_issued)
+{
+  int c;
+  int pos = ftell (stderr);
+
+  while ((c = getopt (argc, (char **) argv, options)) != -1)
+    {
+      switch (c)
+        {
+        case 'a':
+          (*a_seen)++;
+          break;
+        case 'b':
+          (*b_seen)++;
+          break;
+        case 'p':
+          *p_value = optarg;
+          break;
+        case 'q':
+          *q_value = optarg;
+          break;
+        case '\1':
+          /* Must only happen with option '-' at the beginning.  */
+          ASSERT (options[0] == '-');
+          non_options[(*non_options_count)++] = optarg;
+          break;
+        case ':':
+          /* Must only happen with option ':' at the beginning.  */
+          ASSERT (options[0] == ':'
+                  || ((options[0] == '-' || options[0] == '+')
+                      && options[1] == ':'));
+          FALLTHROUGH;
+        case '?':
+          *unrecognized = optopt;
+          break;
+        default:
+          *unrecognized = c;
+          break;
+        }
+    }
+
+  *message_issued = pos < ftell (stderr);
+}
+
+static void
+test_getopt (void)
+{
+  int start;
+  bool posixly = !!getenv ("POSIXLY_CORRECT");
+  /* See comment in getopt.c:
+     glibc gets a LSB-compliant getopt.
+     Standalone applications get a POSIX-compliant getopt.  */
+#if defined __GETOPT_PREFIX || !(__GLIBC__ >= 2 || defined __MINGW32__)
+  /* Using getopt from gnulib or from a non-glibc system.  */
+  posixly = true;
+#endif
+
+  /* Test processing of boolean options.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-a";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "ab",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-b";
+      argv[argc++] = "-a";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "ab",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ba";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "ab",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ab";
+      argv[argc++] = "-a";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "ab",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 2);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+      ASSERT (!output);
+    }
+
+  /* Test processing of options with arguments.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-pfoo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "p:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "p:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ab";
+      argv[argc++] = "-q";
+      argv[argc++] = "baz";
+      argv[argc++] = "-pfoo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value != NULL && strcmp (q_value, "baz") == 0);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 5);
+      ASSERT (!output);
+    }
+
+#if GNULIB_TEST_GETOPT_GNU
+  /* Test processing of options with optional arguments.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-pfoo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "p::q::",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "p::q::",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "abp::q::",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+      ASSERT (!output);
+    }
+#endif /* GNULIB_TEST_GETOPT_GNU */
+
+  /* Check that invalid options are recognized; and that both opterr
+     and leading ':' can silence output.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-x";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 42;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'x');
+      ASSERT (optind == 5);
+      ASSERT (output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-x";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 0;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'x');
+      ASSERT (optind == 5);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-x";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, ":abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'x');
+      ASSERT (optind == 5);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-:";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 42;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == ':');
+      ASSERT (optind == 5);
+      ASSERT (output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-:";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 0;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == ':');
+      ASSERT (optind == 5);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-:";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, ":abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == ':');
+      ASSERT (optind == 5);
+      ASSERT (!output);
+    }
+
+  /* Check for missing argument behavior.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ap";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'p');
+      ASSERT (optind == 2);
+      ASSERT (output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ap";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 0;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'p');
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ap";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, ":abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'p');
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+
+  /* Check that by default, non-options arguments are moved to the end.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      if (posixly)
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "donald") == 0);
+          ASSERT (strcmp (argv[2], "-p") == 0);
+          ASSERT (strcmp (argv[3], "billy") == 0);
+          ASSERT (strcmp (argv[4], "duck") == 0);
+          ASSERT (strcmp (argv[5], "-a") == 0);
+          ASSERT (strcmp (argv[6], "bar") == 0);
+          ASSERT (argv[7] == NULL);
+          ASSERT (a_seen == 0);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value == NULL);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 1);
+          ASSERT (!output);
+        }
+      else
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "-p") == 0);
+          ASSERT (strcmp (argv[2], "billy") == 0);
+          ASSERT (strcmp (argv[3], "-a") == 0);
+          ASSERT (strcmp (argv[4], "donald") == 0);
+          ASSERT (strcmp (argv[5], "duck") == 0);
+          ASSERT (strcmp (argv[6], "bar") == 0);
+          ASSERT (argv[7] == NULL);
+          ASSERT (a_seen == 1);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 4);
+          ASSERT (!output);
+        }
+    }
+
+  /* Check that '--' ends the argument processing.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[20];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "--";
+      argv[argc++] = "-b";
+      argv[argc++] = "foo";
+      argv[argc++] = "-q";
+      argv[argc++] = "johnny";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      if (posixly)
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "donald") == 0);
+          ASSERT (strcmp (argv[2], "-p") == 0);
+          ASSERT (strcmp (argv[3], "billy") == 0);
+          ASSERT (strcmp (argv[4], "duck") == 0);
+          ASSERT (strcmp (argv[5], "-a") == 0);
+          ASSERT (strcmp (argv[6], "--") == 0);
+          ASSERT (strcmp (argv[7], "-b") == 0);
+          ASSERT (strcmp (argv[8], "foo") == 0);
+          ASSERT (strcmp (argv[9], "-q") == 0);
+          ASSERT (strcmp (argv[10], "johnny") == 0);
+          ASSERT (strcmp (argv[11], "bar") == 0);
+          ASSERT (argv[12] == NULL);
+          ASSERT (a_seen == 0);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value == NULL);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 1);
+          ASSERT (!output);
+        }
+      else
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "-p") == 0);
+          ASSERT (strcmp (argv[2], "billy") == 0);
+          ASSERT (strcmp (argv[3], "-a") == 0);
+          ASSERT (strcmp (argv[4], "--") == 0);
+          ASSERT (strcmp (argv[5], "donald") == 0);
+          ASSERT (strcmp (argv[6], "duck") == 0);
+          ASSERT (strcmp (argv[7], "-b") == 0);
+          ASSERT (strcmp (argv[8], "foo") == 0);
+          ASSERT (strcmp (argv[9], "-q") == 0);
+          ASSERT (strcmp (argv[10], "johnny") == 0);
+          ASSERT (strcmp (argv[11], "bar") == 0);
+          ASSERT (argv[12] == NULL);
+          ASSERT (a_seen == 1);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 5);
+          ASSERT (!output);
+        }
+    }
+
+#if GNULIB_TEST_GETOPT_GNU
+  /* Check that the '-' flag causes non-options to be returned in order.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "-abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 3);
+      ASSERT (strcmp (non_options[0], "donald") == 0);
+      ASSERT (strcmp (non_options[1], "duck") == 0);
+      ASSERT (strcmp (non_options[2], "bar") == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 7);
+      ASSERT (!output);
+    }
+
+  /* Check that '--' ends the argument processing.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[20];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "--";
+      argv[argc++] = "-b";
+      argv[argc++] = "foo";
+      argv[argc++] = "-q";
+      argv[argc++] = "johnny";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "-abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "--") == 0);
+      ASSERT (strcmp (argv[7], "-b") == 0);
+      ASSERT (strcmp (argv[8], "foo") == 0);
+      ASSERT (strcmp (argv[9], "-q") == 0);
+      ASSERT (strcmp (argv[10], "johnny") == 0);
+      ASSERT (strcmp (argv[11], "bar") == 0);
+      ASSERT (argv[12] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (!output);
+      if (non_options_count == 2)
+        {
+          /* glibc behaviour.  */
+          ASSERT (non_options_count == 2);
+          ASSERT (strcmp (non_options[0], "donald") == 0);
+          ASSERT (strcmp (non_options[1], "duck") == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 7);
+        }
+      else
+        {
+          /* Another valid behaviour.  */
+          ASSERT (non_options_count == 7);
+          ASSERT (strcmp (non_options[0], "donald") == 0);
+          ASSERT (strcmp (non_options[1], "duck") == 0);
+          ASSERT (strcmp (non_options[2], "-b") == 0);
+          ASSERT (strcmp (non_options[3], "foo") == 0);
+          ASSERT (strcmp (non_options[4], "-q") == 0);
+          ASSERT (strcmp (non_options[5], "johnny") == 0);
+          ASSERT (strcmp (non_options[6], "bar") == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 12);
+        }
+    }
+
+  /* Check that the '-' flag has to come first.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "abp:q:-",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      if (posixly)
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "donald") == 0);
+          ASSERT (strcmp (argv[2], "-p") == 0);
+          ASSERT (strcmp (argv[3], "billy") == 0);
+          ASSERT (strcmp (argv[4], "duck") == 0);
+          ASSERT (strcmp (argv[5], "-a") == 0);
+          ASSERT (strcmp (argv[6], "bar") == 0);
+          ASSERT (argv[7] == NULL);
+          ASSERT (a_seen == 0);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value == NULL);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 1);
+          ASSERT (!output);
+        }
+      else
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "-p") == 0);
+          ASSERT (strcmp (argv[2], "billy") == 0);
+          ASSERT (strcmp (argv[3], "-a") == 0);
+          ASSERT (strcmp (argv[4], "donald") == 0);
+          ASSERT (strcmp (argv[5], "duck") == 0);
+          ASSERT (strcmp (argv[6], "bar") == 0);
+          ASSERT (argv[7] == NULL);
+          ASSERT (a_seen == 1);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 4);
+          ASSERT (!output);
+        }
+    }
+
+  /* Check that the '+' flag causes the first non-option to terminate the
+     loop.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "+abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 1);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-+";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_loop (argc, argv, "+abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == '+');
+      ASSERT (optind == 2);
+      ASSERT (output);
+    }
+
+  /* Check that '--' ends the argument processing.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[20];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "--";
+      argv[argc++] = "-b";
+      argv[argc++] = "foo";
+      argv[argc++] = "-q";
+      argv[argc++] = "johnny";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "+abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "--") == 0);
+      ASSERT (strcmp (argv[7], "-b") == 0);
+      ASSERT (strcmp (argv[8], "foo") == 0);
+      ASSERT (strcmp (argv[9], "-q") == 0);
+      ASSERT (strcmp (argv[10], "johnny") == 0);
+      ASSERT (strcmp (argv[11], "bar") == 0);
+      ASSERT (argv[12] == NULL);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 1);
+      ASSERT (!output);
+    }
+#endif /* GNULIB_TEST_GETOPT_GNU */
+
+  /* Check that the '+' flag has to come first.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "abp:q:+",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      if (posixly)
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "donald") == 0);
+          ASSERT (strcmp (argv[2], "-p") == 0);
+          ASSERT (strcmp (argv[3], "billy") == 0);
+          ASSERT (strcmp (argv[4], "duck") == 0);
+          ASSERT (strcmp (argv[5], "-a") == 0);
+          ASSERT (strcmp (argv[6], "bar") == 0);
+          ASSERT (argv[7] == NULL);
+          ASSERT (a_seen == 0);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value == NULL);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 1);
+          ASSERT (!output);
+        }
+      else
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "-p") == 0);
+          ASSERT (strcmp (argv[2], "billy") == 0);
+          ASSERT (strcmp (argv[3], "-a") == 0);
+          ASSERT (strcmp (argv[4], "donald") == 0);
+          ASSERT (strcmp (argv[5], "duck") == 0);
+          ASSERT (strcmp (argv[6], "bar") == 0);
+          ASSERT (argv[7] == NULL);
+          ASSERT (a_seen == 1);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 4);
+          ASSERT (!output);
+        }
+    }
+
+#if GNULIB_TEST_GETOPT_GNU
+  /* If GNU extensions are supported, require compliance with POSIX
+     interpretation on leading '+' behavior.
+     http://austingroupbugs.net/view.php?id=191  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "+:abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 1);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_loop (argc, argv, "+:abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'p');
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-b";
+      argv[argc++] = "-p";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_loop (argc, argv, "+:abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'p');
+      ASSERT (optind == 3);
+      ASSERT (!output);
+    }
+
+  /* Check that 'W' does not dump core:
+     https://sourceware.org/bugzilla/show_bug.cgi?id=12922
+     Technically, POSIX says the presence of ';' in the opt-string
+     gives unspecified behavior, so we only test this when GNU compliance
+     is desired.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int argc = 0;
+      const char *argv[10];
+      int pos = ftell (stderr);
+
+      argv[argc++] = "program";
+      argv[argc++] = "-W";
+      argv[argc++] = "dummy";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      ASSERT (getopt (argc, (char **) argv, "W;") == 'W');
+      ASSERT (ftell (stderr) == pos);
+      ASSERT (optind == 2);
+    }
+#endif /* GNULIB_TEST_GETOPT_GNU */
+}
diff --git a/gnulib-tests/test-getopt_long.h b/gnulib-tests/test-getopt_long.h
new file mode 100644
index 0000000..eaa61b4
--- /dev/null
+++ b/gnulib-tests/test-getopt_long.h
@@ -0,0 +1,2144 @@
+/* Test of command line argument processing.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+static int a_seen;
+static int b_seen;
+static int q_seen;
+
+static const struct option long_options_required[] =
+  {
+    { "alpha",    no_argument,       NULL, 'a' },
+    { "beta",     no_argument,       &b_seen, 1 },
+    { "prune",    required_argument, NULL, 'p' },
+    { "quetsche", required_argument, &q_seen, 1 },
+    { "xtremely-",no_argument,       NULL, 1003 },
+    { "xtra",     no_argument,       NULL, 1001 },
+    { "xtreme",   no_argument,       NULL, 1002 },
+    { "xtremely", no_argument,       NULL, 1003 },
+    { NULL,       0,                 NULL, 0 }
+  };
+
+static const struct option long_options_optional[] =
+  {
+    { "alpha",    no_argument,       NULL, 'a' },
+    { "beta",     no_argument,       &b_seen, 1 },
+    { "prune",    optional_argument, NULL, 'p' },
+    { "quetsche", optional_argument, &q_seen, 1 },
+    { NULL,       0,                 NULL, 0 }
+  };
+
+static void
+getopt_long_loop (int argc, const char **argv,
+                  const char *options, const struct option *long_options,
+                  const char **p_value, const char **q_value,
+                  int *non_options_count, const char **non_options,
+                  int *unrecognized)
+{
+  int option_index = -1;
+  int c;
+
+  opterr = 0;
+  q_seen = 0;
+  while ((c = getopt_long (argc, (char **) argv, options, long_options,
+                           &option_index))
+         != -1)
+    {
+      switch (c)
+        {
+        case 0:
+          /* An option with a non-NULL flag pointer was processed.  */
+          if (q_seen)
+            *q_value = optarg;
+          break;
+        case 'a':
+          a_seen++;
+          break;
+        case 'b':
+          b_seen = 1;
+          break;
+        case 'p':
+          *p_value = optarg;
+          break;
+        case 'q':
+          *q_value = optarg;
+          break;
+        case '\1':
+          /* Must only happen with option '-' at the beginning.  */
+          ASSERT (options[0] == '-');
+          non_options[(*non_options_count)++] = optarg;
+          break;
+        case ':':
+          /* Must only happen with option ':' at the beginning.  */
+          ASSERT (options[0] == ':'
+                  || ((options[0] == '-' || options[0] == '+')
+                      && options[1] == ':'));
+          FALLTHROUGH;
+        case '?':
+          *unrecognized = optopt;
+          break;
+        default:
+          *unrecognized = c;
+          break;
+        }
+    }
+}
+
+/* Reduce casting, so we can use string literals elsewhere.
+   getopt_long takes an array of char*, but luckily does not modify
+   those elements, so we can pass const char*.  */
+static int
+do_getopt_long (int argc, const char **argv, const char *shortopts,
+                const struct option *longopts, int *longind)
+{
+  return getopt_long (argc, (char **) argv, shortopts, longopts, longind);
+}
+
+static void
+test_getopt_long (void)
+{
+  int start;
+
+  /* Test disambiguation of options.  */
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--x";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xt";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xtr";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xtra";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == 1001);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xtre";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xtrem";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xtreme";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == 1002);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xtremel";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == 1003);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xtremely";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == 1003);
+  }
+
+  /* Check that -W handles unknown options.  */
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-W";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "W;", long_options_required, &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 'W');
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-Wunknown";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "W;", long_options_required, &option_index);
+    /* glibc and BSD behave differently here, but for now, we allow
+       both behaviors since W support is not frequently used.  */
+    if (c == '?')
+      {
+        ASSERT (optopt == 0);
+        ASSERT (optarg == NULL);
+      }
+    else
+      {
+        ASSERT (c == 'W');
+        ASSERT (strcmp (optarg, "unknown") == 0);
+      }
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-W";
+    argv[argc++] = "unknown";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "W;", long_options_required, &option_index);
+    /* glibc and BSD behave differently here, but for now, we allow
+       both behaviors since W support is not frequently used.  */
+    if (c == '?')
+      {
+        ASSERT (optopt == 0);
+        ASSERT (optarg == NULL);
+      }
+    else
+      {
+        ASSERT (c == 'W');
+        ASSERT (strcmp (optarg, "unknown") == 0);
+      }
+  }
+
+  /* Test that 'W' does not dump core:
+     https://sourceware.org/bugzilla/show_bug.cgi?id=12922  */
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-W";
+    argv[argc++] = "dummy";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "W;", NULL, &option_index);
+    ASSERT (c == 'W');
+    ASSERT (optind == 2);
+  }
+
+  /* Test processing of boolean short options.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-a";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-b";
+      argv[argc++] = "-a";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ba";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ab";
+      argv[argc++] = "-a";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 2);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+
+  /* Test processing of boolean long options.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--alpha";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--beta";
+      argv[argc++] = "--alpha";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--alpha";
+      argv[argc++] = "--beta";
+      argv[argc++] = "--alpha";
+      argv[argc++] = "--beta";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 2);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 5);
+    }
+
+  /* Test processing of boolean long options via -W.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-Walpha";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abW;", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-W";
+      argv[argc++] = "beta";
+      argv[argc++] = "-W";
+      argv[argc++] = "alpha";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "aW;b", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 5);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-Walpha";
+      argv[argc++] = "-Wbeta";
+      argv[argc++] = "-Walpha";
+      argv[argc++] = "-Wbeta";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "W;ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 2);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 5);
+    }
+
+  /* Test processing of short options with arguments.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-pfoo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ab";
+      argv[argc++] = "-q";
+      argv[argc++] = "baz";
+      argv[argc++] = "-pfoo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value != NULL && strcmp (q_value, "baz") == 0);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 5);
+    }
+
+  /* Test processing of long options with arguments.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--p=foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--p";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ab";
+      argv[argc++] = "--q";
+      argv[argc++] = "baz";
+      argv[argc++] = "--p=foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value != NULL && strcmp (q_value, "baz") == 0);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 5);
+    }
+
+  /* Test processing of long options with arguments via -W.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-Wp=foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p:q:W;", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-W";
+      argv[argc++] = "p";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p:W;q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 4);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ab";
+      argv[argc++] = "-Wq";
+      argv[argc++] = "baz";
+      argv[argc++] = "-W";
+      argv[argc++] = "p=foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "W;abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value != NULL && strcmp (q_value, "baz") == 0);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 6);
+    }
+
+  /* Test processing of short options with optional arguments.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-pfoo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+
+  /* Test processing of long options with optional arguments.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--p=foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--p";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--p=";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && *p_value == '\0');
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--p";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+
+  /* Test processing of long options with optional arguments via -W.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-Wp=foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::q::W;", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-Wp";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::q::W;", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-Wp=";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "W;p::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && *p_value == '\0');
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-W";
+      argv[argc++] = "p=";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "W;p::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && *p_value == '\0');
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-W";
+      argv[argc++] = "p";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "W;abp::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      /* ASSERT (p_value == NULL); */
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 4);
+    }
+
+  /* Check that invalid options are recognized.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-x";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'x');
+      ASSERT (optind == 5);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-:";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == ':');
+      ASSERT (optind == 5);
+    }
+
+  /* Check that unexpected arguments are recognized.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "--a=";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'a');
+      ASSERT (optind == 4);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "--b=";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      /* When flag is non-zero, glibc sets optopt anyway, but BSD
+         leaves optopt unchanged.  */
+      ASSERT (unrecognized == 1 || unrecognized == 0);
+      ASSERT (optind == 4);
+    }
+
+  /* Check that by default, non-options arguments are moved to the end.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "-p") == 0);
+      ASSERT (strcmp (argv[2], "billy") == 0);
+      ASSERT (strcmp (argv[3], "-a") == 0);
+      ASSERT (strcmp (argv[4], "donald") == 0);
+      ASSERT (strcmp (argv[5], "duck") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 4);
+    }
+
+  /* Check that '--' ends the argument processing.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[20];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "--";
+      argv[argc++] = "-b";
+      argv[argc++] = "foo";
+      argv[argc++] = "-q";
+      argv[argc++] = "johnny";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "-p") == 0);
+      ASSERT (strcmp (argv[2], "billy") == 0);
+      ASSERT (strcmp (argv[3], "-a") == 0);
+      ASSERT (strcmp (argv[4], "--") == 0);
+      ASSERT (strcmp (argv[5], "donald") == 0);
+      ASSERT (strcmp (argv[6], "duck") == 0);
+      ASSERT (strcmp (argv[7], "-b") == 0);
+      ASSERT (strcmp (argv[8], "foo") == 0);
+      ASSERT (strcmp (argv[9], "-q") == 0);
+      ASSERT (strcmp (argv[10], "johnny") == 0);
+      ASSERT (strcmp (argv[11], "bar") == 0);
+      ASSERT (argv[12] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 5);
+    }
+
+  /* Check that the '-' flag causes non-options to be returned in order.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "-abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 3);
+      ASSERT (strcmp (non_options[0], "donald") == 0);
+      ASSERT (strcmp (non_options[1], "duck") == 0);
+      ASSERT (strcmp (non_options[2], "bar") == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 7);
+    }
+
+  /* Check that '--' ends the argument processing.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[20];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "--";
+      argv[argc++] = "-b";
+      argv[argc++] = "foo";
+      argv[argc++] = "-q";
+      argv[argc++] = "johnny";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "-abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "--") == 0);
+      ASSERT (strcmp (argv[7], "-b") == 0);
+      ASSERT (strcmp (argv[8], "foo") == 0);
+      ASSERT (strcmp (argv[9], "-q") == 0);
+      ASSERT (strcmp (argv[10], "johnny") == 0);
+      ASSERT (strcmp (argv[11], "bar") == 0);
+      ASSERT (argv[12] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      if (non_options_count == 2)
+      {
+        /* glibc behaviour.  */
+        ASSERT (non_options_count == 2);
+        ASSERT (strcmp (non_options[0], "donald") == 0);
+        ASSERT (strcmp (non_options[1], "duck") == 0);
+        ASSERT (unrecognized == 0);
+        ASSERT (optind == 7);
+      }
+      else
+      {
+        /* Another valid behaviour.  */
+        ASSERT (non_options_count == 7);
+        ASSERT (strcmp (non_options[0], "donald") == 0);
+        ASSERT (strcmp (non_options[1], "duck") == 0);
+        ASSERT (strcmp (non_options[2], "-b") == 0);
+        ASSERT (strcmp (non_options[3], "foo") == 0);
+        ASSERT (strcmp (non_options[4], "-q") == 0);
+        ASSERT (strcmp (non_options[5], "johnny") == 0);
+        ASSERT (strcmp (non_options[6], "bar") == 0);
+        ASSERT (unrecognized == 0);
+        ASSERT (optind == 12);
+      }
+    }
+
+  /* Check that the '-' flag has to come first.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:-", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "-p") == 0);
+      ASSERT (strcmp (argv[2], "billy") == 0);
+      ASSERT (strcmp (argv[3], "-a") == 0);
+      ASSERT (strcmp (argv[4], "donald") == 0);
+      ASSERT (strcmp (argv[5], "duck") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 4);
+    }
+
+  /* Check that the '+' flag causes the first non-option to terminate the
+     loop.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "+abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 1);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-+";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "+abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == '+');
+      ASSERT (optind == 2);
+    }
+
+  /* Check that '--' ends the argument processing.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[20];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "--";
+      argv[argc++] = "-b";
+      argv[argc++] = "foo";
+      argv[argc++] = "-q";
+      argv[argc++] = "johnny";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "+abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "--") == 0);
+      ASSERT (strcmp (argv[7], "-b") == 0);
+      ASSERT (strcmp (argv[8], "foo") == 0);
+      ASSERT (strcmp (argv[9], "-q") == 0);
+      ASSERT (strcmp (argv[10], "johnny") == 0);
+      ASSERT (strcmp (argv[11], "bar") == 0);
+      ASSERT (argv[12] == NULL);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 1);
+    }
+
+  /* Check that the '+' flag has to come first.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:+", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "-p") == 0);
+      ASSERT (strcmp (argv[2], "billy") == 0);
+      ASSERT (strcmp (argv[3], "-a") == 0);
+      ASSERT (strcmp (argv[4], "donald") == 0);
+      ASSERT (strcmp (argv[5], "duck") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 4);
+    }
+}
+
+/* Test behavior of getopt_long when POSIXLY_CORRECT is set in the
+   environment.  Options with optional arguments should not change
+   behavior just because of an environment variable.
+   https://lists.gnu.org/r/bug-m4/2006-09/msg00028.html  */
+static void
+test_getopt_long_posix (void)
+{
+  int start;
+
+  /* Check that POSIXLY_CORRECT stops parsing the same as leading '+'.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 1);
+    }
+
+  /* Check that POSIXLY_CORRECT doesn't change optional arguments.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+
+  /* Check that leading - still sees options after non-options.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-a";
+      argv[argc++] = "billy";
+      argv[argc++] = "-b";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "-ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 1);
+      ASSERT (strcmp (non_options[0], "billy") == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 4);
+    }
+}
+
+/* Reduce casting, so we can use string literals elsewhere.
+   getopt_long_only takes an array of char*, but luckily does not
+   modify those elements, so we can pass const char*.  */
+static int
+do_getopt_long_only (int argc, const char **argv, const char *shortopts,
+                     const struct option *longopts, int *longind)
+{
+  return getopt_long_only (argc, (char **) argv, shortopts, longopts, longind);
+}
+
+static void
+test_getopt_long_only (void)
+{
+  /* Test disambiguation of options.  */
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-x";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "ab", long_options_required,
+                             &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-x";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "abx", long_options_required,
+                             &option_index);
+    ASSERT (c == 'x');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--x";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "abx", long_options_required,
+                             &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-b";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    b_seen = 0;
+    c = do_getopt_long_only (argc, argv, "abx", long_options_required,
+                             &option_index);
+    ASSERT (c == 'b');
+    ASSERT (b_seen == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--b";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    b_seen = 0;
+    c = do_getopt_long_only (argc, argv, "abx", long_options_required,
+                             &option_index);
+    ASSERT (c == 0);
+    ASSERT (b_seen == 1);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-xt";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "ab", long_options_required,
+                             &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-xt";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "abx", long_options_required,
+                             &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-xtra";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "ab", long_options_required,
+                             &option_index);
+    ASSERT (c == 1001);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-xtreme";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "abx:", long_options_required,
+                             &option_index);
+    ASSERT (c == 1002);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-xtremel";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "ab", long_options_required,
+                             &option_index);
+    /* glibc getopt_long_only is intentionally different from
+       getopt_long when handling a prefix that is common to two
+       spellings, when both spellings have the same option directives.
+       BSD getopt_long_only treats both cases the same.  */
+    ASSERT (c == 1003 || c == '?');
+    ASSERT (optind == 2);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-xtremel";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "abx::", long_options_required,
+                             &option_index);
+    /* glibc getopt_long_only is intentionally different from
+       getopt_long when handling a prefix that is common to two
+       spellings, when both spellings have the same option directives.
+       BSD getopt_long_only treats both cases the same.  */
+    ASSERT (c == 1003 || c == '?');
+    ASSERT (optind == 2);
+    ASSERT (optarg == NULL);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-xtras";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "abx::", long_options_required,
+                             &option_index);
+    ASSERT (c == 'x');
+    ASSERT (strcmp (optarg, "tras") == 0);
+  }
+}
diff --git a/gnulib-tests/test-getprogname.c b/gnulib-tests/test-getprogname.c
new file mode 100644
index 0000000..38163ea
--- /dev/null
+++ b/gnulib-tests/test-getprogname.c
@@ -0,0 +1,58 @@
+/* Test the gnulib getprogname module.
+   Copyright (C) 2016-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "getprogname.h"
+#include <string.h>
+#include <assert.h>
+
+#ifdef __hpux
+# define STREQ(a, b) (strncmp (a, b, 14) == 0)
+#else
+# define STREQ(a, b) (strcmp (a, b) == 0)
+#endif
+
+int
+main (void)
+{
+  char const *p = getprogname ();
+
+  /* libtool creates a temporary executable whose name is sometimes prefixed
+     with "lt-" (depends on the platform).  But the name of the temporary
+     executable is a detail that should not be visible to the end user and to
+     the test suite.  Remove this "lt-" prefix here.  */
+  if (strncmp (p, "lt-", 3) == 0)
+    p += 3;
+
+  /* Note: You can make this test fail
+     a) by running it on a case-insensitive file system (such as on Windows,
+        Cygwin, or on Mac OS X with a case-insensitive HFS+ file system),
+        with an invocation that contains upper case characters, e.g.
+        test-GETPROGNAME,
+     b) by hardlinking or symlinking it to a different name (e.g. test-foo)
+        and invoking it through that name.
+     That's not the intended use. The Makefile always invokes it as
+     'test-getprogname${EXEEXT}'. */
+#if defined __CYGWIN__
+  /* The Cygwin getprogname() function strips the ".exe" suffix. */
+  assert (STREQ (p, "test-getprogname"));
+#else
+  assert (STREQ (p, "test-getprogname" EXEEXT));
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-getrusage.c b/gnulib-tests/test-getrusage.c
new file mode 100644
index 0000000..a201236
--- /dev/null
+++ b/gnulib-tests/test-getrusage.c
@@ -0,0 +1,86 @@
+/* Test of getting resource utilization.
+   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2012.  */
+
+#include <config.h>
+
+#include <sys/resource.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (getrusage, int, (int, struct rusage *));
+
+#include <sys/time.h>
+
+#include "macros.h"
+
+volatile unsigned int counter;
+
+int
+main (void)
+{
+  struct rusage before;
+  struct rusage after;
+  int ret;
+
+  ret = getrusage (RUSAGE_SELF, &before);
+  ASSERT (ret == 0);
+
+  /* Busy-loop for one second.  */
+  {
+    struct timeval t0;
+    ASSERT (gettimeofday (&t0, NULL) == 0);
+
+    for (;;)
+      {
+        struct timeval t;
+        int i;
+
+        for (i = 0; i < 1000000; i++)
+          counter++;
+
+        ASSERT (gettimeofday (&t, NULL) == 0);
+        if (t.tv_sec - t0.tv_sec > 1
+            || (t.tv_sec - t0.tv_sec == 1 && t.tv_usec >= t0.tv_usec))
+          break;
+      }
+  }
+
+  ret = getrusage (RUSAGE_SELF, &after);
+  ASSERT (ret == 0);
+
+  ASSERT (after.ru_utime.tv_sec >= before.ru_utime.tv_sec);
+  ASSERT (after.ru_stime.tv_sec >= before.ru_stime.tv_sec);
+  {
+    /* Compute time spent during busy-looping (in usec).  */
+    unsigned int spent_utime =
+      (after.ru_utime.tv_sec > before.ru_utime.tv_sec
+       ? (after.ru_utime.tv_sec - before.ru_utime.tv_sec - 1) * 1000000U
+         + after.ru_utime.tv_usec + (1000000U - before.ru_utime.tv_usec)
+       : after.ru_utime.tv_usec - before.ru_utime.tv_usec);
+    unsigned int spent_stime =
+      (after.ru_stime.tv_sec > before.ru_stime.tv_sec
+       ? (after.ru_stime.tv_sec - before.ru_stime.tv_sec - 1) * 1000000U
+         + after.ru_stime.tv_usec + (1000000U - before.ru_stime.tv_usec)
+       : after.ru_stime.tv_usec - before.ru_stime.tv_usec);
+
+    ASSERT (spent_utime + spent_stime <= 2 * 1000000U);
+    /* Assume that the load during this busy-looping was less than 100.  */
+    ASSERT (spent_utime + spent_stime > 10000U);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-gettimeofday.c b/gnulib-tests/test-gettimeofday.c
new file mode 100644
index 0000000..4ce4107
--- /dev/null
+++ b/gnulib-tests/test-gettimeofday.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2005, 2007, 2009-2020 Free Software Foundation, Inc.
+ * Written by Jim Meyering.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/time.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (gettimeofday, int,
+                 (struct timeval *, GETTIMEOFDAY_TIMEZONE *));
+
+#include <time.h>
+
+#include <stdio.h>
+#include <string.h>
+
+int
+main (void)
+{
+  time_t t = 0;
+  struct tm *lt;
+  struct tm saved_lt;
+  struct timeval tv;
+  lt = localtime (&t);
+  saved_lt = *lt;
+  gettimeofday (&tv, NULL);
+  if (memcmp (lt, &saved_lt, sizeof (struct tm)) != 0)
+    {
+      fprintf (stderr, "gettimeofday still clobbers the localtime buffer!\n");
+      return 1;
+    }
+  return 0;
+}
diff --git a/gnulib-tests/test-hard-locale.c b/gnulib-tests/test-hard-locale.c
new file mode 100644
index 0000000..e232123
--- /dev/null
+++ b/gnulib-tests/test-hard-locale.c
@@ -0,0 +1,109 @@
+/* Test of determination whether a locale is different from the "C" locale.
+   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+#include "hard-locale.h"
+
+#include <locale.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+/* True if all locale names are accepted and all locales are trivial.
+   This is the case e.g. on OpenBSD 3.8.  */
+static bool all_trivial;
+
+static int
+test_one (const char *name, int failure_bitmask)
+{
+  if (setlocale (LC_ALL, name) != NULL)
+    {
+      bool expected;
+
+      /* musl libc has special code for the C.UTF-8 locale; other than that,
+         all locale names are accepted and all locales are trivial.
+         OpenBSD returns the locale name that was set, but we don't know how it
+         behaves under the hood.  Likewise for Haiku.  */
+#if defined MUSL_LIBC || defined __OpenBSD__ || defined __HAIKU__
+      expected = true;
+#else
+      expected = !all_trivial;
+#endif
+      if (hard_locale (LC_CTYPE) != expected)
+        {
+          if (expected)
+            fprintf (stderr, "Unexpected: The category LC_CTYPE of the locale '%s' is not equivalent to C or POSIX.\n",
+                     name);
+          else
+            fprintf (stderr, "Unexpected: The category LC_CTYPE of the locale '%s' is equivalent to C or POSIX.\n",
+                     name);
+          return failure_bitmask;
+        }
+
+      /* On NetBSD 7.0, some locales such as de_DE.ISO8859-1 and de_DE.UTF-8
+         have the LC_COLLATE category set to "C".
+         Similarly, on musl libc, with the C.UTF-8 locale.  */
+#if defined __NetBSD__
+      expected = false;
+#elif defined MUSL_LIBC
+      expected = strcmp (name, "C.UTF-8") != 0;
+#elif (defined __OpenBSD__ && HAVE_DUPLOCALE) || defined __HAIKU__ /* OpenBSD >= 6.2, Haiku */
+      expected = true;
+#else
+      expected = !all_trivial;
+#endif
+      if (hard_locale (LC_COLLATE) != expected)
+        {
+          if (expected)
+            fprintf (stderr, "Unexpected: The category LC_COLLATE of the locale '%s' is not equivalent to C or POSIX.\n",
+                     name);
+          else
+            fprintf (stderr, "Unexpected: The category LC_COLLATE of the locale '%s' is equivalent to C or POSIX.\n",
+                     name);
+          return failure_bitmask;
+        }
+    }
+  return 0;
+}
+
+int
+main ()
+{
+  int fail = 0;
+
+  /* The initial locale is the "C" or "POSIX" locale.  */
+  if (hard_locale (LC_CTYPE) || hard_locale (LC_COLLATE))
+    {
+      fprintf (stderr, "The initial locale should not be hard!\n");
+      fail |= 1;
+    }
+
+  all_trivial = (setlocale (LC_ALL, "foobar") != NULL);
+
+  fail |= test_one ("de", 2);
+  fail |= test_one ("de_DE", 4);
+  fail |= test_one ("de_DE.ISO8859-1", 8);
+  fail |= test_one ("de_DE.iso88591", 8);
+  fail |= test_one ("de_DE.UTF-8", 16);
+  fail |= test_one ("de_DE.utf8", 16);
+  fail |= test_one ("german", 32);
+  fail |= test_one ("C.UTF-8", 64);
+
+  return fail;
+}
diff --git a/gnulib-tests/test-hash.c b/gnulib-tests/test-hash.c
new file mode 100644
index 0000000..67d9519
--- /dev/null
+++ b/gnulib-tests/test-hash.c
@@ -0,0 +1,263 @@
+/*
+ * Copyright (C) 2009-2020 Free Software Foundation, Inc.
+ * Written by Jim Meyering
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "hash.h"
+#include "hash-pjw.h"
+#include "inttostr.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define STREQ(a, b) (strcmp (a, b) == 0)
+#define ARRAY_CARDINALITY(Array) (sizeof (Array) / sizeof *(Array))
+
+static bool
+hash_compare_strings (void const *x, void const *y)
+{
+  ASSERT (x != y);
+  return STREQ (x, y) ? true : false;
+}
+
+static void
+hash_freer (void *x)
+{
+  free (x);
+}
+
+static void
+insert_new (Hash_table *ht, const void *ent)
+{
+  void *e = hash_insert (ht, ent);
+  ASSERT (e == ent);
+}
+
+static bool
+walk (void *ent, void *data)
+{
+  char *str = ent;
+  unsigned int *map = data;
+  switch (*str)
+    {
+    case 'a': *map |= 1; return true;
+    case 'b': *map |= 2; return true;
+    case 'c': *map |= 4; return true;
+    }
+  *map |= 8;
+  return false;
+}
+
+static int
+get_seed (char const *str, unsigned int *seed)
+{
+  size_t len = strlen (str);
+  if (len == 0 || strspn (str, "0123456789") != len || 10 < len)
+    return 1;
+
+  *seed = atoi (str);
+  return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+  unsigned int i;
+  unsigned int k;
+  unsigned int table_size[] = {1, 2, 3, 4, 5, 23, 53};
+  Hash_table *ht;
+  Hash_tuning tuning;
+
+  hash_reset_tuning (&tuning);
+  tuning.shrink_threshold = 0.3;
+  tuning.shrink_factor = 0.707;
+  tuning.growth_threshold = 1.5;
+  tuning.growth_factor = 2.0;
+  tuning.is_n_buckets = true;
+
+  if (1 < argc)
+    {
+      unsigned int seed;
+      if (get_seed (argv[1], &seed) != 0)
+        {
+          fprintf (stderr, "invalid seed: %s\n", argv[1]);
+          exit (EXIT_FAILURE);
+        }
+
+      srand (seed);
+    }
+
+  for (i = 0; i < ARRAY_CARDINALITY (table_size); i++)
+    {
+      size_t sz = table_size[i];
+      ht = hash_initialize (sz, NULL, hash_pjw, hash_compare_strings, NULL);
+      ASSERT (ht);
+      insert_new (ht, "a");
+      {
+        char *str1 = strdup ("a");
+        char *str2;
+        ASSERT (str1);
+        str2 = hash_insert (ht, str1);
+        ASSERT (str1 != str2);
+        ASSERT (STREQ (str1, str2));
+        free (str1);
+      }
+      insert_new (ht, "b");
+      insert_new (ht, "c");
+      i = 0;
+      ASSERT (hash_do_for_each (ht, walk, &i) == 3);
+      ASSERT (i == 7);
+      {
+        void *buf[5] = { NULL };
+        ASSERT (hash_get_entries (ht, NULL, 0) == 0);
+        ASSERT (hash_get_entries (ht, buf, 5) == 3);
+        ASSERT (STREQ (buf[0], "a") || STREQ (buf[0], "b") || STREQ (buf[0], "c"));
+      }
+      ASSERT (hash_delete (ht, "a"));
+      ASSERT (hash_delete (ht, "a") == NULL);
+      ASSERT (hash_delete (ht, "b"));
+      ASSERT (hash_delete (ht, "c"));
+
+      ASSERT (hash_rehash (ht, 47));
+      ASSERT (hash_rehash (ht, 467));
+
+      /* Free an empty table. */
+      hash_clear (ht);
+      hash_free (ht);
+
+      ht = hash_initialize (sz, NULL, hash_pjw, hash_compare_strings, NULL);
+      ASSERT (ht);
+
+      insert_new (ht, "z");
+      insert_new (ht, "y");
+      insert_new (ht, "x");
+      insert_new (ht, "w");
+      insert_new (ht, "v");
+      insert_new (ht, "u");
+
+      hash_clear (ht);
+      ASSERT (hash_get_n_entries (ht) == 0);
+      hash_free (ht);
+
+      /* Test pointer hashing.  */
+      ht = hash_initialize (sz, NULL, NULL, NULL, NULL);
+      ASSERT (ht);
+      {
+        char *str = strdup ("a");
+        ASSERT (str);
+        insert_new (ht, "a");
+        insert_new (ht, str);
+        ASSERT (hash_lookup (ht, str) == str);
+        free (str);
+      }
+      hash_free (ht);
+    }
+
+  hash_reset_tuning (&tuning);
+  tuning.shrink_threshold = 0.3;
+  tuning.shrink_factor = 0.707;
+  tuning.growth_threshold = 1.5;
+  tuning.growth_factor = 2.0;
+  tuning.is_n_buckets = true;
+  /* Invalid tuning.  */
+  ht = hash_initialize (4651, &tuning, hash_pjw, hash_compare_strings,
+                        hash_freer);
+  ASSERT (!ht);
+
+  /* Alternate tuning.  */
+  tuning.growth_threshold = 0.89;
+
+  /* Run with default tuning, then with custom tuning settings.  */
+  for (k = 0; k < 2; k++)
+    {
+      Hash_tuning const *tune = (k == 0 ? NULL : &tuning);
+      /* Now, each entry is malloc'd.  */
+      ht = hash_initialize (4651, tune, hash_pjw,
+                            hash_compare_strings, hash_freer);
+      ASSERT (ht);
+      for (i = 0; i < 10000; i++)
+        {
+          unsigned int op = rand () % 10;
+          switch (op)
+            {
+            case 0:
+            case 1:
+            case 2:
+            case 3:
+            case 4:
+            case 5:
+              {
+                char buf[50];
+                char const *p = uinttostr (i, buf);
+                char *p_dup = strdup (p);
+                ASSERT (p_dup);
+                insert_new (ht, p_dup);
+              }
+              break;
+
+            case 6:
+              {
+                size_t n = hash_get_n_entries (ht);
+                ASSERT (hash_rehash (ht, n + rand () % 20));
+              }
+              break;
+
+            case 7:
+              {
+                size_t n = hash_get_n_entries (ht);
+                size_t delta = rand () % 20;
+                if (delta < n)
+                  ASSERT (hash_rehash (ht, n - delta));
+              }
+              break;
+
+            case 8:
+            case 9:
+              {
+                /* Delete a random entry.  */
+                size_t n = hash_get_n_entries (ht);
+                if (n)
+                  {
+                    size_t kk = rand () % n;
+                    void const *p;
+                    void *v;
+                    for (p = hash_get_first (ht); kk;
+                         --kk, p = hash_get_next (ht, p))
+                      {
+                        /* empty */
+                      }
+                    ASSERT (p);
+                    v = hash_delete (ht, p);
+                    ASSERT (v);
+                    free (v);
+                  }
+                break;
+              }
+            }
+          ASSERT (hash_table_ok (ht));
+        }
+
+      hash_free (ht);
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-i-ring.c b/gnulib-tests/test-i-ring.c
new file mode 100644
index 0000000..a299917
--- /dev/null
+++ b/gnulib-tests/test-i-ring.c
@@ -0,0 +1,63 @@
+/* Test the simple ring buffer.
+   Copyright (C) 2006-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+#include <config.h>
+
+#include "i-ring.h"
+
+#include "macros.h"
+
+int
+main (void)
+{
+  int o;
+  I_ring ir;
+  i_ring_init (&ir, -1);
+  o = i_ring_push (&ir, 1);
+  ASSERT (o == -1);
+  o = i_ring_push (&ir, 2);
+  ASSERT (o == -1);
+  o = i_ring_push (&ir, 3);
+  ASSERT (o == -1);
+  o = i_ring_push (&ir, 4);
+  ASSERT (o == -1);
+  o = i_ring_push (&ir, 5);
+  ASSERT (o == 1);
+  o = i_ring_push (&ir, 6);
+  ASSERT (o == 2);
+  o = i_ring_push (&ir, 7);
+  ASSERT (o == 3);
+
+  o = i_ring_pop (&ir);
+  ASSERT (o == 7);
+  o = i_ring_pop (&ir);
+  ASSERT (o == 6);
+  o = i_ring_pop (&ir);
+  ASSERT (o == 5);
+  o = i_ring_pop (&ir);
+  ASSERT (o == 4);
+  ASSERT (i_ring_empty (&ir));
+
+  o = i_ring_push (&ir, 8);
+  ASSERT (o == -1);
+  o = i_ring_pop (&ir);
+  ASSERT (o == 8);
+  ASSERT (i_ring_empty (&ir));
+
+  return 0;
+}
diff --git a/gnulib-tests/test-iconv-h.c b/gnulib-tests/test-iconv-h.c
new file mode 100644
index 0000000..d044011
--- /dev/null
+++ b/gnulib-tests/test-iconv-h.c
@@ -0,0 +1,27 @@
+/* Test of <iconv.h> substitute.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#if HAVE_ICONV
+# include <iconv.h>
+#endif
+
+int
+main ()
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-iconv.c b/gnulib-tests/test-iconv.c
new file mode 100644
index 0000000..895f6de
--- /dev/null
+++ b/gnulib-tests/test-iconv.c
@@ -0,0 +1,159 @@
+/* Test of character set conversion.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#if HAVE_ICONV
+# include <iconv.h>
+
+# ifndef ICONV_CONST
+#  define ICONV_CONST /* empty */
+# endif
+
+#include "signature.h"
+SIGNATURE_CHECK (iconv, size_t, (iconv_t, ICONV_CONST char **, size_t *,
+                                 char **, size_t *));
+SIGNATURE_CHECK (iconv_close, int, (iconv_t x));
+SIGNATURE_CHECK (iconv_open, iconv_t, (char const *, char const *));
+
+#endif
+
+#include <errno.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+#if HAVE_ICONV
+  /* Assume that iconv() supports at least the encodings ASCII, ISO-8859-1,
+     and UTF-8.  */
+  iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1");
+  iconv_t cd_utf8_to_88591 = iconv_open ("ISO-8859-1", "UTF-8");
+
+#if defined __MVS__ && defined __IBMC__
+  /* String literals below are in ASCII, not EBCDIC.  */
+# pragma convert("ISO8859-1")
+# define CONVERT_ENABLED
+#endif
+
+  ASSERT (cd_88591_to_utf8 != (iconv_t)(-1));
+  ASSERT (cd_utf8_to_88591 != (iconv_t)(-1));
+
+  /* Test conversion from ISO-8859-1 to UTF-8 with no errors.  */
+  {
+    static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    static const char expected[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    char buf[50];
+    const char *inptr = input;
+    size_t inbytesleft = strlen (input);
+    char *outptr = buf;
+    size_t outbytesleft = sizeof (buf);
+    size_t res = iconv (cd_88591_to_utf8,
+                        (ICONV_CONST char **) &inptr, &inbytesleft,
+                        &outptr, &outbytesleft);
+    ASSERT (res == 0 && inbytesleft == 0);
+    ASSERT (outptr == buf + strlen (expected));
+    ASSERT (memcmp (buf, expected, strlen (expected)) == 0);
+  }
+
+  /* Test conversion from ISO-8859-1 to UTF-8 with E2BIG.  */
+  {
+    static const char input[] = "\304";
+    static char buf[2] = { (char)0xDE, (char)0xAD };
+    const char *inptr = input;
+    size_t inbytesleft = 1;
+    char *outptr = buf;
+    size_t outbytesleft = 1;
+    size_t res = iconv (cd_88591_to_utf8,
+                        (ICONV_CONST char **) &inptr, &inbytesleft,
+                        &outptr, &outbytesleft);
+    ASSERT (res == (size_t)(-1) && errno == E2BIG);
+    ASSERT (inbytesleft == 1);
+    ASSERT (outbytesleft == 1);
+    ASSERT ((unsigned char) buf[1] == 0xAD);
+    ASSERT ((unsigned char) buf[0] == 0xDE);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with no errors.  */
+  {
+    static const char input[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    static const char expected[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    char buf[50];
+    const char *inptr = input;
+    size_t inbytesleft = strlen (input);
+    char *outptr = buf;
+    size_t outbytesleft = sizeof (buf);
+    size_t res = iconv (cd_utf8_to_88591,
+                        (ICONV_CONST char **) &inptr, &inbytesleft,
+                        &outptr, &outbytesleft);
+    ASSERT (res == 0 && inbytesleft == 0);
+    ASSERT (outptr == buf + strlen (expected));
+    ASSERT (memcmp (buf, expected, strlen (expected)) == 0);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EILSEQ.  */
+  {
+    static const char input[] = "\342\202\254"; /* EURO SIGN */
+    char buf[10];
+    const char *inptr = input;
+    size_t inbytesleft = strlen (input);
+    char *outptr = buf;
+    size_t outbytesleft = sizeof (buf);
+    size_t res = iconv (cd_utf8_to_88591,
+                        (ICONV_CONST char **) &inptr, &inbytesleft,
+                        &outptr, &outbytesleft);
+    if (res == (size_t)(-1))
+      {
+        ASSERT (errno == EILSEQ);
+        ASSERT (inbytesleft == strlen (input) && outptr == buf);
+      }
+    else
+      {
+        ASSERT (res == 1);
+        ASSERT (inbytesleft == 0);
+      }
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EINVAL.  */
+  {
+    static const char input[] = "\342";
+    char buf[10];
+    const char *inptr = input;
+    size_t inbytesleft = 1;
+    char *outptr = buf;
+    size_t outbytesleft = sizeof (buf);
+    size_t res = iconv (cd_utf8_to_88591,
+                        (ICONV_CONST char **) &inptr, &inbytesleft,
+                        &outptr, &outbytesleft);
+    ASSERT (res == (size_t)(-1) && errno == EINVAL);
+    ASSERT (inbytesleft == 1 && outptr == buf);
+  }
+
+  iconv_close (cd_88591_to_utf8);
+  iconv_close (cd_utf8_to_88591);
+
+#ifdef CONVERT_ENABLED
+# pragma convert(pop)
+#endif
+
+#endif /* HAVE_ICONV */
+
+  return 0;
+}
diff --git a/gnulib-tests/test-ignore-value.c b/gnulib-tests/test-ignore-value.c
new file mode 100644
index 0000000..f323a7b
--- /dev/null
+++ b/gnulib-tests/test-ignore-value.c
@@ -0,0 +1,84 @@
+/* Test the "ignore-value" module.
+
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake.  */
+
+#include <config.h>
+
+#include "ignore-value.h"
+
+#include <stdio.h>
+
+#ifndef _GL_ATTRIBUTE_RETURN_CHECK
+# if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4)
+#  define _GL_ATTRIBUTE_RETURN_CHECK
+# else
+#  define _GL_ATTRIBUTE_RETURN_CHECK __attribute__((__warn_unused_result__))
+# endif
+#endif
+
+struct s { int i; };
+static char doChar (void) _GL_ATTRIBUTE_RETURN_CHECK;
+static int doInt (void) _GL_ATTRIBUTE_RETURN_CHECK;
+static off_t doOff (void) _GL_ATTRIBUTE_RETURN_CHECK;
+static void *doPtr (void) _GL_ATTRIBUTE_RETURN_CHECK;
+static struct s doStruct (void) _GL_ATTRIBUTE_RETURN_CHECK;
+
+static char
+doChar (void)
+{
+  return 0;
+}
+
+static int
+doInt (void)
+{
+  return 0;
+}
+
+static off_t
+doOff (void)
+{
+  return 0;
+}
+
+static void *
+doPtr (void)
+{
+  return NULL;
+}
+
+static struct s
+doStruct (void)
+{
+  static struct s s1;
+  return s1;
+}
+
+int
+main (void)
+{
+  /* If this test can compile with -Werror and the same warnings as
+     the rest of the project, then we are properly silencing warnings
+     about ignored return values.  */
+  ignore_value (doChar ());
+  ignore_value (doInt ());
+  ignore_value (doOff ());
+  ignore_value (doPtr ());
+  ignore_value (doStruct ());
+  return 0;
+}
diff --git a/gnulib-tests/test-inet_ntop.c b/gnulib-tests/test-inet_ntop.c
new file mode 100644
index 0000000..0bbc4dd
--- /dev/null
+++ b/gnulib-tests/test-inet_ntop.c
@@ -0,0 +1,56 @@
+/* Test of inet_ntop function.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+#include <arpa/inet.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (inet_ntop, char const *, (int, void const *, char *,
+                                           socklen_t));
+
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+#if defined AF_INET /* HAVE_IPV4 */
+  {
+    struct in_addr internal;
+    char printable[16];
+    const char *result;
+
+    /* This machine was for a long time known as
+       ma2s2.mathematik.uni-karlsruhe.de.  */
+# ifdef WORDS_BIGENDIAN
+    internal.s_addr = 0x810D7302;
+# else
+    internal.s_addr = 0x02730D81;
+# endif
+    result = inet_ntop (AF_INET, &internal, printable, sizeof (printable));
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "129.13.115.2") == 0);
+  }
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-inet_pton.c b/gnulib-tests/test-inet_pton.c
new file mode 100644
index 0000000..8ae0fe2
--- /dev/null
+++ b/gnulib-tests/test-inet_pton.c
@@ -0,0 +1,58 @@
+/* Test of inet_pton function.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+#include <arpa/inet.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (inet_pton, int, (int, const char *, void *));
+
+#include <netinet/in.h>
+#include <sys/socket.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+#if defined AF_INET /* HAVE_IPV4 */
+  {
+    /* This machine was for a long time known as
+       ma2s2.mathematik.uni-karlsruhe.de.  */
+    const char printable[] = "129.13.115.2";
+    struct in_addr internal;
+    int ret;
+
+    ret = inet_pton (AF_INET, printable, &internal);
+    ASSERT (ret == 1);
+    /* Verify that internal is filled in network byte order.  */
+    ASSERT (((unsigned char *) &internal)[0] == 0x81);
+    ASSERT (((unsigned char *) &internal)[1] == 0x0D);
+    ASSERT (((unsigned char *) &internal)[2] == 0x73);
+    ASSERT (((unsigned char *) &internal)[3] == 0x02);
+# ifdef WORDS_BIGENDIAN
+    ASSERT (internal.s_addr == 0x810D7302);
+# else
+    ASSERT (internal.s_addr == 0x02730D81);
+# endif
+  }
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-init.sh b/gnulib-tests/test-init.sh
new file mode 100755
index 0000000..e9d2524
--- /dev/null
+++ b/gnulib-tests/test-init.sh
@@ -0,0 +1,74 @@
+#!/bin/sh
+# Unit tests for init.sh
+# Copyright (C) 2011-2020 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+fail=0
+
+test_compare()
+{
+  touch empty || fail=1
+  echo xyz > in || fail=1
+
+  compare /dev/null /dev/null >out 2>err || fail=1
+  test -s out && fail_ "out not empty: $(cat out)"
+  # "err" should be empty, too, but has "set -x" output when VERBOSE=yes
+  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
+
+  compare /dev/null empty >out 2>err || fail=1
+  test -s out && fail_ "out not empty: $(cat out)"
+  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
+
+  compare in in >out 2>err || fail=1
+  test -s out && fail_ "out not empty: $(cat out)"
+  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
+
+  compare /dev/null in >out 2>err && fail=1
+  cat <<\EOF > exp
+diff -u /dev/null in
+--- /dev/null	1970-01-01
++++ in	1970-01-01
++xyz
+EOF
+  compare exp out || fail=1
+  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
+
+  compare empty in >out 2>err && fail=1
+  # Compare against expected output only if compare is using diff -u.
+  if grep @ out >/dev/null; then
+    # Remove the TAB-date suffix on each --- and +++ line,
+    # for both the expected and the actual output files.
+    # Also remove the @@ line, since Solaris 5.10 and GNU diff formats differ:
+    # -@@ -0,0 +1 @@
+    # +@@ -1,0 +1,1 @@
+    # Also, remove space after leading '+', since AIX 7.1 diff outputs a space.
+    sed 's/	.*//;/^@@/d;s/^+ /+/' out > k && mv k out
+    cat <<\EOF > exp
+--- empty
++++ in
++xyz
+EOF
+    compare exp out || fail=1
+  fi
+  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
+}
+
+test_compare
+
+Exit $fail
diff --git a/gnulib-tests/test-ino-map.c b/gnulib-tests/test-ino-map.c
new file mode 100644
index 0000000..5a7c74f
--- /dev/null
+++ b/gnulib-tests/test-ino-map.c
@@ -0,0 +1,50 @@
+/* Test the ino-map module.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <config.h>
+
+#include "ino-map.h"
+
+#include "macros.h"
+
+int
+main ()
+{
+  enum { INO_MAP_INIT = 123 };
+  struct ino_map *ino_map = ino_map_alloc (INO_MAP_INIT);
+  ASSERT (ino_map != NULL);
+
+  ASSERT (ino_map_insert (ino_map, 42) == INO_MAP_INIT);
+  ASSERT (ino_map_insert (ino_map, 42) == INO_MAP_INIT);
+  ASSERT (ino_map_insert (ino_map, 398) == INO_MAP_INIT + 1);
+  ASSERT (ino_map_insert (ino_map, 398) == INO_MAP_INIT + 1);
+  ASSERT (ino_map_insert (ino_map, 0) == INO_MAP_INIT + 2);
+  ASSERT (ino_map_insert (ino_map, 0) == INO_MAP_INIT + 2);
+
+  {
+    int i;
+    for (i = 0; i < 100; i++)
+      {
+        ASSERT (ino_map_insert (ino_map, 10000 + i) == INO_MAP_INIT + 3 + i);
+      }
+  }
+
+  ino_map_free (ino_map);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-intprops.c b/gnulib-tests/test-intprops.c
new file mode 100644
index 0000000..a56b18e
--- /dev/null
+++ b/gnulib-tests/test-intprops.c
@@ -0,0 +1,441 @@
+/* Test intprops.h.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+/* Tell gcc not to warn about the long expressions that the overflow
+   macros expand to, or about the (X < 0) expressions.  */
+#if 4 < __GNUC__ + (3 <= __GNUC_MINOR__)
+# pragma GCC diagnostic ignored "-Woverlength-strings"
+# pragma GCC diagnostic ignored "-Wtype-limits"
+
+/* Work around a bug in GCC 6.1 and earlier; see:
+   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68971  */
+# pragma GCC diagnostic ignored "-Woverflow"
+
+#endif
+
+#include <config.h>
+
+#include "intprops.h"
+#include "verify.h"
+
+#include <stdbool.h>
+#include <inttypes.h>
+#include <limits.h>
+
+#include "macros.h"
+
+/* Compile-time verification of expression X.
+   In this file, we need it as a statement, rather than as a declaration.  */
+#define verify_stmt(x) do { verify (x); } while (0)
+
+/* VERIFY (X) uses a static assertion for compilers that are known to work,
+   and falls back on a dynamic assertion for other compilers.
+   These tests should be checkable via 'verify' rather than 'ASSERT', but
+   using 'verify' would run into a bug with HP-UX 11.23 cc; see
+   <https://lists.gnu.org/r/bug-gnulib/2011-05/msg00401.html>.  */
+#if __GNUC__ || __SUNPRO_C
+# define VERIFY(x) verify_stmt (x)
+#else
+# define VERIFY(x) ASSERT (x)
+#endif
+
+#define DONTCARE __LINE__
+
+int int_minus_2 = -2;
+int int_1 = 1;
+
+int
+main (void)
+{
+  /* Use VERIFY for tests that must be integer constant expressions,
+     ASSERT otherwise.  */
+
+  /* TYPE_IS_INTEGER.  */
+  ASSERT (TYPE_IS_INTEGER (bool));
+  ASSERT (TYPE_IS_INTEGER (char));
+  ASSERT (TYPE_IS_INTEGER (signed char));
+  ASSERT (TYPE_IS_INTEGER (unsigned char));
+  ASSERT (TYPE_IS_INTEGER (short int));
+  ASSERT (TYPE_IS_INTEGER (unsigned short int));
+  ASSERT (TYPE_IS_INTEGER (int));
+  ASSERT (TYPE_IS_INTEGER (unsigned int));
+  ASSERT (TYPE_IS_INTEGER (long int));
+  ASSERT (TYPE_IS_INTEGER (unsigned long int));
+  ASSERT (TYPE_IS_INTEGER (intmax_t));
+  ASSERT (TYPE_IS_INTEGER (uintmax_t));
+  ASSERT (! TYPE_IS_INTEGER (float));
+  ASSERT (! TYPE_IS_INTEGER (double));
+  ASSERT (! TYPE_IS_INTEGER (long double));
+
+  /* TYPE_SIGNED.  */
+  /* VERIFY (! TYPE_SIGNED (bool)); // not guaranteed by gnulib substitute */
+  VERIFY (TYPE_SIGNED (signed char));
+  VERIFY (! TYPE_SIGNED (unsigned char));
+  VERIFY (TYPE_SIGNED (short int));
+  VERIFY (! TYPE_SIGNED (unsigned short int));
+  VERIFY (TYPE_SIGNED (int));
+  VERIFY (! TYPE_SIGNED (unsigned int));
+  VERIFY (TYPE_SIGNED (long int));
+  VERIFY (! TYPE_SIGNED (unsigned long int));
+  VERIFY (TYPE_SIGNED (intmax_t));
+  VERIFY (! TYPE_SIGNED (uintmax_t));
+  ASSERT (TYPE_SIGNED (float));
+  ASSERT (TYPE_SIGNED (double));
+  ASSERT (TYPE_SIGNED (long double));
+
+  /* Integer representation.  Check that it is two's complement.  */
+  VERIFY (INT_MIN + INT_MAX < 0);
+
+  /* TYPE_MINIMUM, TYPE_MAXIMUM.  */
+  VERIFY (TYPE_MINIMUM (char) == CHAR_MIN);
+  VERIFY (TYPE_MAXIMUM (char) == CHAR_MAX);
+  VERIFY (TYPE_MINIMUM (unsigned char) == 0);
+  VERIFY (TYPE_MAXIMUM (unsigned char) == UCHAR_MAX);
+  VERIFY (TYPE_MINIMUM (signed char) == SCHAR_MIN);
+  VERIFY (TYPE_MAXIMUM (signed char) == SCHAR_MAX);
+  VERIFY (TYPE_MINIMUM (short int) == SHRT_MIN);
+  VERIFY (TYPE_MAXIMUM (short int) == SHRT_MAX);
+  VERIFY (TYPE_MINIMUM (unsigned short int) == 0);
+  VERIFY (TYPE_MAXIMUM (unsigned short int) == USHRT_MAX);
+  VERIFY (TYPE_MINIMUM (int) == INT_MIN);
+  VERIFY (TYPE_MAXIMUM (int) == INT_MAX);
+  VERIFY (TYPE_MINIMUM (unsigned int) == 0);
+  VERIFY (TYPE_MAXIMUM (unsigned int) == UINT_MAX);
+  VERIFY (TYPE_MINIMUM (long int) == LONG_MIN);
+  VERIFY (TYPE_MAXIMUM (long int) == LONG_MAX);
+  VERIFY (TYPE_MINIMUM (unsigned long int) == 0);
+  VERIFY (TYPE_MAXIMUM (unsigned long int) == ULONG_MAX);
+  #ifdef LLONG_MAX
+   verify_stmt (TYPE_MINIMUM (long long int) == LLONG_MIN);
+   verify_stmt (TYPE_MAXIMUM (long long int) == LLONG_MAX);
+   verify_stmt (TYPE_MINIMUM (unsigned long long int) == 0);
+   verify_stmt (TYPE_MAXIMUM (unsigned long long int) == ULLONG_MAX);
+  #endif
+  VERIFY (TYPE_MINIMUM (intmax_t) == INTMAX_MIN);
+  VERIFY (TYPE_MAXIMUM (intmax_t) == INTMAX_MAX);
+  VERIFY (TYPE_MINIMUM (uintmax_t) == 0);
+  VERIFY (TYPE_MAXIMUM (uintmax_t) == UINTMAX_MAX);
+
+  /* TYPE_WIDTH.  */
+  #ifdef CHAR_WIDTH
+   verify_stmt (TYPE_WIDTH (char) == CHAR_WIDTH);
+   verify_stmt (TYPE_WIDTH (signed char) == SCHAR_WIDTH);
+   verify_stmt (TYPE_WIDTH (unsigned char) == UCHAR_WIDTH);
+   verify_stmt (TYPE_WIDTH (short int) == SHRT_WIDTH);
+   verify_stmt (TYPE_WIDTH (unsigned short int) == USHRT_WIDTH);
+   verify_stmt (TYPE_WIDTH (int) == INT_WIDTH);
+   verify_stmt (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
+   verify_stmt (TYPE_WIDTH (long int) == LONG_WIDTH);
+   verify_stmt (TYPE_WIDTH (unsigned long int) == ULONG_WIDTH);
+   #ifdef LLONG_WIDTH
+    verify_stmt (TYPE_WIDTH (long long int) == LLONG_WIDTH);
+    verify_stmt (TYPE_WIDTH (unsigned long long int) == ULLONG_WIDTH);
+   #endif
+  #endif
+
+  /* INT_BITS_STRLEN_BOUND.  */
+  VERIFY (INT_BITS_STRLEN_BOUND (1) == 1);
+  VERIFY (INT_BITS_STRLEN_BOUND (2620) == 789);
+
+  /* INT_STRLEN_BOUND, INT_BUFSIZE_BOUND.  */
+  #ifdef INT32_MAX /* POSIX guarantees int32_t; this ports to non-POSIX.  */
+  VERIFY (INT_STRLEN_BOUND (int32_t) == sizeof ("-2147483648") - 1);
+  VERIFY (INT_BUFSIZE_BOUND (int32_t) == sizeof ("-2147483648"));
+  #endif
+  #ifdef INT64_MAX
+  VERIFY (INT_STRLEN_BOUND (int64_t) == sizeof ("-9223372036854775808") - 1);
+  VERIFY (INT_BUFSIZE_BOUND (int64_t) == sizeof ("-9223372036854775808"));
+  #endif
+
+  /* All the INT_<op>_RANGE_OVERFLOW tests are equally valid as
+     INT_<op>_OVERFLOW tests, so define macros to do both.  OP is the
+     operation, OPNAME its symbolic name, A and B its operands, T the
+     result type, V the overflow flag, and VRES the result if V and if
+     two's complement.  CHECK_BINOP is for most binary operatinos,
+     CHECK_SBINOP for binary +, -, * when the result type is signed,
+     and CHECK_UNOP for unary operations.  */
+  #define CHECK_BINOP(op, opname, a, b, t, v, vres)                       \
+    VERIFY (INT_##opname##_RANGE_OVERFLOW (a, b, TYPE_MINIMUM (t),        \
+                                           TYPE_MAXIMUM (t))              \
+            == (v));                                                      \
+    VERIFY (INT_##opname##_OVERFLOW (a, b) == (v))
+  #define CHECK_SBINOP(op, opname, a, b, t, v, vres)                      \
+    CHECK_BINOP(op, opname, a, b, t, v, vres);                            \
+    {                                                                     \
+      t result;                                                           \
+      ASSERT (INT_##opname##_WRAPV (a, b, &result) == (v));               \
+      ASSERT (result == ((v) ? (vres) : ((a) op (b))));                   \
+    }
+  #define CHECK_UNOP(op, opname, a, t, v)                                 \
+    VERIFY (INT_##opname##_RANGE_OVERFLOW (a, TYPE_MINIMUM (t),           \
+                                           TYPE_MAXIMUM (t))              \
+            == (v));                                                      \
+    VERIFY (INT_##opname##_OVERFLOW (a) == (v))
+
+  /* INT_<op>_RANGE_OVERFLOW, INT_<op>_OVERFLOW.  */
+  VERIFY (INT_ADD_RANGE_OVERFLOW (INT_MAX, 1, INT_MIN, INT_MAX));
+  VERIFY (INT_ADD_OVERFLOW (INT_MAX, 1));
+
+  CHECK_SBINOP (+, ADD, INT_MAX, 1, int, true, INT_MIN);
+  CHECK_SBINOP (+, ADD, INT_MAX, -1, int, false, INT_MAX - 1);
+  CHECK_SBINOP (+, ADD, INT_MIN, 1, int, false, INT_MIN + 1);
+  CHECK_SBINOP (+, ADD, INT_MIN, -1, int, true, INT_MAX);
+  CHECK_BINOP (+, ADD, UINT_MAX, 1u, unsigned int, true, 0u);
+  CHECK_BINOP (+, ADD, 0u, 1u, unsigned int, false, 1u);
+
+  CHECK_SBINOP (-, SUBTRACT, INT_MAX, 1, int, false, INT_MAX - 1);
+  CHECK_SBINOP (-, SUBTRACT, INT_MAX, -1, int, true, INT_MIN);
+  CHECK_SBINOP (-, SUBTRACT, INT_MIN, 1, int, true, INT_MAX);
+  CHECK_SBINOP (-, SUBTRACT, INT_MIN, -1, int, false, INT_MIN - -1);
+  CHECK_BINOP (-, SUBTRACT, UINT_MAX, 1u, unsigned int, false, UINT_MAX - 1u);
+  CHECK_BINOP (-, SUBTRACT, 0u, 1u, unsigned int, true, 0u - 1u);
+
+  CHECK_UNOP (-, NEGATE, INT_MIN, int, true);
+  CHECK_UNOP (-, NEGATE, 0, int, false);
+  CHECK_UNOP (-, NEGATE, INT_MAX, int, false);
+  CHECK_UNOP (-, NEGATE, 0u, unsigned int, false);
+  CHECK_UNOP (-, NEGATE, 1u, unsigned int, true);
+  CHECK_UNOP (-, NEGATE, UINT_MAX, unsigned int, true);
+
+  CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MAX, int, true, 1);
+  CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MIN, int, true, INT_MIN);
+  CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MAX, int, true, INT_MIN);
+  CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MIN, int, true, 0);
+  CHECK_SBINOP (*, MULTIPLY, -1, INT_MIN, int,
+                INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
+#if !defined __HP_cc
+  CHECK_SBINOP (*, MULTIPLY, LONG_MIN / INT_MAX, (long int) INT_MAX,
+                long int, false, LONG_MIN - LONG_MIN % INT_MAX);
+#endif
+
+  CHECK_BINOP (/, DIVIDE, INT_MIN, -1, int,
+               INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
+  CHECK_BINOP (/, DIVIDE, INT_MAX, 1, int, false, INT_MAX);
+  CHECK_BINOP (/, DIVIDE, (unsigned int) INT_MIN, -1u, unsigned int,
+               false, INT_MIN / -1u);
+
+  CHECK_BINOP (%, REMAINDER, INT_MIN, -1, int, INT_NEGATE_OVERFLOW (INT_MIN), 0);
+  CHECK_BINOP (%, REMAINDER, INT_MAX, 1, int, false, 0);
+  CHECK_BINOP (%, REMAINDER, (unsigned int) INT_MIN, -1u, unsigned int,
+               false, INT_MIN % -1u);
+
+  CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX, 1, unsigned int, true, UINT_MAX << 1);
+  CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2 + 1, 1, unsigned int, true,
+               (UINT_MAX / 2 + 1) << 1);
+  CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2, 1, unsigned int, false,
+               (UINT_MAX / 2) << 1);
+
+  /* INT_<op>_OVERFLOW and INT_<op>_WRAPV with mixed types.  */
+  #define CHECK_SUM(a, b, t, v, vres)                                     \
+    CHECK_SUM1 (a, b, t, v, vres);                                        \
+    CHECK_SUM1 (b, a, t, v, vres)
+  #define CHECK_SUM_WRAPV(a, b, t, v, vres, okres)                        \
+    CHECK_SUM_WRAPV1 (a, b, t, v, vres, okres);                           \
+    CHECK_SUM_WRAPV1 (b, a, t, v, vres, okres)
+  #define CHECK_SUM1(a, b, t, v, vres)                                    \
+    VERIFY (INT_ADD_OVERFLOW (a, b) == (v));                              \
+    CHECK_SUM_WRAPV1 (a, b, t, v, vres, (a) + (b))
+  #define CHECK_SUM_WRAPV1(a, b, t, v, vres, okres)                       \
+    {                                                                     \
+      t result;                                                           \
+      ASSERT (INT_ADD_WRAPV (a, b, &result) == (v));                      \
+      ASSERT (result == ((v) ? (vres) : (okres)));                        \
+    }
+  CHECK_SUM (-1, LONG_MIN, long int, true, LONG_MAX);
+  CHECK_SUM (-1, UINT_MAX, unsigned int, false, DONTCARE);
+  CHECK_SUM (-1L, INT_MIN, long int, INT_MIN == LONG_MIN,
+              INT_MIN == LONG_MIN ? INT_MAX : DONTCARE);
+  CHECK_SUM (0u, -1, unsigned int, true, 0u + -1);
+  CHECK_SUM (0u, 0, unsigned int, false, DONTCARE);
+  CHECK_SUM (0u, 1, unsigned int, false, DONTCARE);
+  CHECK_SUM (1, LONG_MAX, long int, true, LONG_MIN);
+  CHECK_SUM (1, UINT_MAX, unsigned int, true, 0u);
+  CHECK_SUM (1L, INT_MAX, long int, INT_MAX == LONG_MAX,
+              INT_MAX == LONG_MAX ? INT_MIN : DONTCARE);
+  CHECK_SUM (1u, INT_MAX, unsigned int, INT_MAX == UINT_MAX, 1u + INT_MAX);
+  CHECK_SUM (1u, INT_MIN, unsigned int, true, 1u + INT_MIN);
+  CHECK_SUM_WRAPV (-1, 1u, int, false, DONTCARE, 0);
+  CHECK_SUM_WRAPV (-1, 1ul, int, false, DONTCARE, 0);
+  CHECK_SUM_WRAPV (-1l, 1u, int, false, DONTCARE, 0);
+  CHECK_SUM_WRAPV (-100, 1000u, int, false, DONTCARE, 900);
+  CHECK_SUM_WRAPV (INT_MIN, UINT_MAX, int, false, DONTCARE, INT_MAX);
+  CHECK_SUM_WRAPV (1u, INT_MAX, int, true, INT_MIN, DONTCARE);
+  CHECK_SUM_WRAPV (INT_MAX, 1, long int, LONG_MAX <= INT_MAX, INT_MIN,
+                   INT_MAX + 1L);
+  CHECK_SUM_WRAPV (UINT_MAX, 1, long int, LONG_MAX <= UINT_MAX, 0,
+                   UINT_MAX + 1L);
+  CHECK_SUM_WRAPV (INT_MAX, 1, unsigned long int, ULONG_MAX <= INT_MAX, 0,
+                   INT_MAX + 1uL);
+  CHECK_SUM_WRAPV (UINT_MAX, 1, unsigned long int, ULONG_MAX <= UINT_MAX, 0,
+                   UINT_MAX + 1uL);
+
+  {
+    long int result;
+    ASSERT (INT_ADD_WRAPV (1, INT_MAX, &result) == (INT_MAX == LONG_MAX));
+    ASSERT (INT_ADD_WRAPV (-1, INT_MIN, &result) == (INT_MIN == LONG_MIN));
+  }
+
+  #define CHECK_DIFFERENCE(a, b, t, v, vres)                              \
+    VERIFY (INT_SUBTRACT_OVERFLOW (a, b) == (v))
+  #define CHECK_SDIFFERENCE(a, b, t, v, vres)                             \
+    CHECK_DIFFERENCE (a, b, t, v, vres);                                  \
+    CHECK_SDIFFERENCE_WRAPV (a, b, t, v, vres)
+  #define CHECK_SDIFFERENCE_WRAPV(a, b, t, v, vres)                       \
+    {                                                                     \
+      t result;                                                           \
+      ASSERT (INT_SUBTRACT_WRAPV (a, b, &result) == (v));                 \
+      ASSERT (result == ((v) ? (vres) : ((a) - (b))));                    \
+    }
+  CHECK_DIFFERENCE (INT_MAX, 1u, unsigned int, UINT_MAX < INT_MAX - 1,
+                    INT_MAX - 1u);
+  CHECK_DIFFERENCE (UINT_MAX, 1, unsigned int, false, UINT_MAX - 1);
+  CHECK_DIFFERENCE (0u, -1, unsigned int, false, 0u - -1);
+  CHECK_DIFFERENCE (UINT_MAX, -1, unsigned int, true, UINT_MAX - -1);
+  CHECK_DIFFERENCE (INT_MIN, 1u, unsigned int, true, INT_MIN - 1u);
+  CHECK_DIFFERENCE (-1, 0u, unsigned int, true, -1 - 0u);
+  CHECK_SDIFFERENCE (-1, INT_MIN, int, false, -1 - INT_MIN);
+  CHECK_SDIFFERENCE (-1, INT_MAX, int, false, -1 - INT_MAX);
+  CHECK_SDIFFERENCE (0, INT_MIN, int, INT_MIN < -INT_MAX, INT_MIN);
+  CHECK_SDIFFERENCE (0, INT_MAX, int, false, 0 - INT_MAX);
+  CHECK_SDIFFERENCE_WRAPV (-1, 1u, int, false, DONTCARE);
+  CHECK_SDIFFERENCE_WRAPV (-1, 1ul, int, false, DONTCARE);
+  CHECK_SDIFFERENCE_WRAPV (-1l, 1u, int, false, DONTCARE);
+  CHECK_SDIFFERENCE_WRAPV (0u, INT_MAX, int, false, DONTCARE);
+  CHECK_SDIFFERENCE_WRAPV (1u, INT_MIN, int, true, 1u - INT_MIN);
+  {
+    long int result;
+    ASSERT (INT_SUBTRACT_WRAPV (INT_MAX, -1, &result) == (INT_MAX == LONG_MAX));
+    ASSERT (INT_SUBTRACT_WRAPV (INT_MIN, 1, &result) == (INT_MAX == LONG_MAX));
+  }
+
+  #define CHECK_PRODUCT(a, b, t, v, vres)                                 \
+    CHECK_PRODUCT1 (a, b, t, v, vres);                                    \
+    CHECK_PRODUCT1 (b, a, t, v, vres)
+  #define CHECK_SPRODUCT(a, b, t, v, vres)                                \
+    CHECK_SPRODUCT1 (a, b, t, v, vres);                                   \
+    CHECK_SPRODUCT1 (b, a, t, v, vres)
+  #define CHECK_SPRODUCT_WRAPV(a, b, t, v, vres)                          \
+    CHECK_SPRODUCT_WRAPV1 (a, b, t, v, vres);                             \
+    CHECK_SPRODUCT_WRAPV1 (b, a, t, v, vres)
+  #define CHECK_PRODUCT1(a, b, t, v, vres)                                \
+    VERIFY (INT_MULTIPLY_OVERFLOW (a, b) == (v))
+  #define CHECK_SPRODUCT1(a, b, t, v, vres)                               \
+    CHECK_PRODUCT1 (a, b, t, v, vres);                                    \
+    CHECK_SPRODUCT_WRAPV1 (a, b, t, v, vres)
+  #define CHECK_SPRODUCT_WRAPV1(a, b, t, v, vres)                         \
+    {                                                                     \
+      t result;                                                           \
+      ASSERT (INT_MULTIPLY_WRAPV (a, b, &result) == (v));                 \
+      ASSERT (result == ((v) ? (vres) : ((a) * (b))));                    \
+    }
+  CHECK_PRODUCT (-1, 1u, unsigned int, true, -1 * 1u);
+  CHECK_SPRODUCT (-1, INT_MIN, int, INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
+  CHECK_PRODUCT (-1, UINT_MAX, unsigned int, true, -1 * UINT_MAX);
+  CHECK_SPRODUCT (-32768, LONG_MAX / -32768 - 1, long int, true, LONG_MIN);
+  CHECK_SPRODUCT (-12345, LONG_MAX / -12345, long int, false, DONTCARE);
+  CHECK_SPRODUCT (0, -1, int, false, DONTCARE);
+  CHECK_SPRODUCT (0, 0, int, false, DONTCARE);
+  CHECK_PRODUCT (0, 0u, unsigned int, false, DONTCARE);
+  CHECK_SPRODUCT (0, 1, int, false, DONTCARE);
+  CHECK_SPRODUCT (0, INT_MAX, int, false, DONTCARE);
+  CHECK_SPRODUCT (0, INT_MIN, int, false, DONTCARE);
+  CHECK_PRODUCT (0, UINT_MAX, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (0u, -1, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (0u, 0, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (0u, 0u, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (0u, 1, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (0u, INT_MAX, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (0u, INT_MIN, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (0u, UINT_MAX, unsigned int, false, DONTCARE);
+  CHECK_SPRODUCT (1, INT_MAX, int, false, DONTCARE);
+  CHECK_SPRODUCT (1, INT_MIN, int, false, DONTCARE);
+  CHECK_PRODUCT (1, UINT_MAX, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (1u, INT_MIN, unsigned int, true, 1u * INT_MIN);
+  CHECK_PRODUCT (1u, INT_MAX, unsigned int, UINT_MAX < INT_MAX, 1u * INT_MAX);
+  CHECK_PRODUCT (INT_MAX, UINT_MAX, unsigned int, true, INT_MAX * UINT_MAX);
+  CHECK_PRODUCT (INT_MAX, ULONG_MAX, unsigned long int, true,
+                 INT_MAX * ULONG_MAX);
+#if !defined __HP_cc
+  CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN - 1, long int, true, LONG_MIN);
+  CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN, long int, false, DONTCARE);
+#endif
+  CHECK_PRODUCT (INT_MIN, UINT_MAX, unsigned int, true, INT_MIN * UINT_MAX);
+  CHECK_PRODUCT (INT_MIN, ULONG_MAX, unsigned long int, true,
+                 INT_MIN * ULONG_MAX);
+  CHECK_SPRODUCT_WRAPV (-1, INT_MAX + 1u, int, false, DONTCARE);
+  CHECK_SPRODUCT_WRAPV (-1, 1u, int, false, DONTCARE);
+  CHECK_SPRODUCT (0, ULONG_MAX, int, false, DONTCARE);
+  CHECK_SPRODUCT (0u, LONG_MIN, int, false, DONTCARE);
+  {
+    long int result;
+    ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result)
+            == (LONG_MAX / INT_MAX < INT_MAX));
+    ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result)
+            || result == INT_MAX * (long int) INT_MAX);
+    ASSERT (INT_MULTIPLY_WRAPV (INT_MIN, INT_MIN, &result)
+            || result == INT_MIN * (long int) INT_MIN);
+  }
+
+# ifdef LLONG_MAX
+  {
+    long long int result;
+    ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result)
+            == (LLONG_MAX / LONG_MAX < LONG_MAX));
+    ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result)
+            || result == LONG_MAX * (long long int) LONG_MAX);
+    ASSERT (INT_MULTIPLY_WRAPV (LONG_MIN, LONG_MIN, &result)
+            || result == LONG_MIN * (long long int) LONG_MIN);
+  }
+# endif
+
+  /* Check for GCC bug 91450.  */
+  {
+    unsigned long long result;
+    ASSERT (INT_MULTIPLY_WRAPV (int_minus_2, int_1, &result) && result == -2);
+  }
+
+  #define CHECK_QUOTIENT(a, b, v) VERIFY (INT_DIVIDE_OVERFLOW (a, b) == (v))
+
+  CHECK_QUOTIENT (INT_MIN, -1L, INT_MIN == LONG_MIN);
+  CHECK_QUOTIENT (INT_MIN, UINT_MAX, false);
+  CHECK_QUOTIENT (INTMAX_MIN, UINTMAX_MAX, false);
+  CHECK_QUOTIENT (INTMAX_MIN, UINT_MAX, false);
+  CHECK_QUOTIENT (-11, 10u, true);
+  CHECK_QUOTIENT (-10, 10u, true);
+  CHECK_QUOTIENT (-9, 10u, false);
+  CHECK_QUOTIENT (11u, -10, true);
+  CHECK_QUOTIENT (10u, -10, true);
+  CHECK_QUOTIENT (9u, -10, false);
+
+  #define CHECK_REMAINDER(a, b, v) VERIFY (INT_REMAINDER_OVERFLOW (a, b) == (v))
+
+  CHECK_REMAINDER (INT_MIN, -1L, INT_MIN == LONG_MIN);
+  CHECK_REMAINDER (-1, UINT_MAX, true);
+  CHECK_REMAINDER ((intmax_t) -1, UINTMAX_MAX, true);
+  CHECK_REMAINDER (INTMAX_MIN, UINT_MAX,
+                   (INTMAX_MAX < UINT_MAX
+                    && - (unsigned int) INTMAX_MIN % UINT_MAX != 0));
+  CHECK_REMAINDER (INT_MIN, ULONG_MAX, INT_MIN % ULONG_MAX != 1);
+  CHECK_REMAINDER (1u, -1, false);
+  CHECK_REMAINDER (37*39u, -39, false);
+  CHECK_REMAINDER (37*39u + 1, -39, true);
+  CHECK_REMAINDER (37*39u - 1, -39, true);
+  CHECK_REMAINDER (LONG_MAX, -INT_MAX, false);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-inttostr.c b/gnulib-tests/test-inttostr.c
new file mode 100644
index 0000000..b6043e6
--- /dev/null
+++ b/gnulib-tests/test-inttostr.c
@@ -0,0 +1,94 @@
+/* Test inttostr functions, and incidentally, INT_BUFSIZE_BOUND
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <config.h>
+
+#include "inttostr.h"
+#include "intprops.h"
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+#define STREQ(a, b) (strcmp (a, b) == 0)
+#define IS_TIGHT(T) (_GL_SIGNED_TYPE_OR_EXPR (T) == TYPE_SIGNED (T))
+#define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9)
+
+/* Verify that an inttostr function works as advertised.
+   Convert maximum and minimum (per-type, T) values using both snprintf --
+   with a cast to intmax_t or uintmax_t -- and FN, and compare the
+   resulting strings.  Use malloc for the inttostr buffer, so that if
+   we ever exceed the usually-tight INT_BUFSIZE_BOUND, tools like
+   valgrind will detect the failure. */
+#define CK(T, Fn)                                                       \
+  do                                                                    \
+    {                                                                   \
+      char ref[100];                                                    \
+      char *buf = malloc (INT_BUFSIZE_BOUND (T));                       \
+      char const *p;                                                    \
+      ASSERT (buf);                                                     \
+      *buf = '\0';                                                      \
+      ASSERT                                                            \
+        ((TYPE_SIGNED (T)                                               \
+          ? snprintf (ref, sizeof ref, "%jd", (intmax_t) TYPE_MINIMUM (T)) \
+          : snprintf (ref, sizeof ref, "%ju", (uintmax_t) TYPE_MINIMUM (T))) \
+         < sizeof ref);                                                 \
+      ASSERT (STREQ ((p = Fn (TYPE_MINIMUM (T), buf)), ref));           \
+      /* Ensure that INT_BUFSIZE_BOUND is tight for signed types.  */   \
+      ASSERT (! TYPE_SIGNED (T) || (p == buf && *p == '-'));            \
+      ASSERT                                                            \
+        ((TYPE_SIGNED (T)                                               \
+          ? snprintf (ref, sizeof ref, "%jd", (intmax_t) TYPE_MAXIMUM (T)) \
+          : snprintf (ref, sizeof ref, "%ju", (uintmax_t) TYPE_MAXIMUM (T))) \
+         < sizeof ref);                                                 \
+      ASSERT (STREQ ((p = Fn (TYPE_MAXIMUM (T), buf)), ref));           \
+      /* For unsigned types, the bound is not always tight.  */         \
+      ASSERT (! IS_TIGHT (T) || TYPE_SIGNED (T)                         \
+              || (p == buf && ISDIGIT (*p)));                           \
+      free (buf);                                                       \
+    }                                                                   \
+  while (0)
+
+int
+main (void)
+{
+  size_t b_size = 2;
+  char *b = malloc (b_size);
+  ASSERT (b);
+
+  /* Ideally we would rely on the snprintf-posix module, in which case
+     this guard would not be required, but due to limitations in gnulib's
+     implementation (see modules/snprintf-posix), we cannot.  */
+  if (snprintf (b, b_size, "%ju", (uintmax_t) 3) == 1
+      && b[0] == '3' && b[1] == '\0')
+    {
+      CK (int,          inttostr);
+      CK (unsigned int, uinttostr);
+      CK (off_t,        offtostr);
+      CK (uintmax_t,    umaxtostr);
+      CK (intmax_t,     imaxtostr);
+      free (b);
+      return 0;
+    }
+
+  /* snprintf doesn't accept %ju; skip this test.  */
+  free (b);
+  return 77;
+}
diff --git a/gnulib-tests/test-inttypes.c b/gnulib-tests/test-inttypes.c
new file mode 100644
index 0000000..21db820
--- /dev/null
+++ b/gnulib-tests/test-inttypes.c
@@ -0,0 +1,118 @@
+/* Test of <inttypes.h> substitute.
+   Copyright (C) 2006-2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <inttypes.h>
+
+#include <stddef.h>
+
+/* Tests for macros supposed to be defined in inttypes.h.  */
+
+const char *k = /* implicit string concatenation */
+#ifdef INT8_MAX
+  PRId8 PRIi8
+#endif
+#ifdef UINT8_MAX
+  PRIo8 PRIu8 PRIx8 PRIX8
+#endif
+#ifdef INT16_MAX
+  PRId16 PRIi16
+#endif
+#ifdef UINT16_MAX
+  PRIo16 PRIu16 PRIx16 PRIX16
+#endif
+#ifdef INT32_MAX
+  PRId32 PRIi32
+#endif
+#ifdef UINT32_MAX
+  PRIo32 PRIu32 PRIx32 PRIX32
+#endif
+#ifdef INT64_MAX
+  PRId64 PRIi64
+#endif
+#ifdef UINT64_MAX
+  PRIo64 PRIu64 PRIx64 PRIX64
+#endif
+  PRIdLEAST8 PRIiLEAST8 PRIoLEAST8 PRIuLEAST8 PRIxLEAST8 PRIXLEAST8
+  PRIdLEAST16 PRIiLEAST16 PRIoLEAST16 PRIuLEAST16 PRIxLEAST16 PRIXLEAST16
+  PRIdLEAST32 PRIiLEAST32 PRIoLEAST32 PRIuLEAST32 PRIxLEAST32 PRIXLEAST32
+  PRIdLEAST64 PRIiLEAST64
+  PRIoLEAST64 PRIuLEAST64 PRIxLEAST64 PRIXLEAST64
+  PRIdFAST8 PRIiFAST8 PRIoFAST8 PRIuFAST8 PRIxFAST8 PRIXFAST8
+  PRIdFAST16 PRIiFAST16 PRIoFAST16 PRIuFAST16 PRIxFAST16 PRIXFAST16
+  PRIdFAST32 PRIiFAST32 PRIoFAST32 PRIuFAST32 PRIxFAST32 PRIXFAST32
+  PRIdFAST64 PRIiFAST64
+  PRIoFAST64 PRIuFAST64 PRIxFAST64 PRIXFAST64
+  PRIdMAX PRIiMAX PRIoMAX PRIuMAX PRIxMAX PRIXMAX
+#ifdef INTPTR_MAX
+  PRIdPTR PRIiPTR
+#endif
+#ifdef UINTPTR_MAX
+  PRIoPTR PRIuPTR PRIxPTR PRIXPTR
+#endif
+  ;
+const char *l = /* implicit string concatenation */
+#ifdef INT8_MAX
+  SCNd8 SCNi8
+#endif
+#ifdef UINT8_MAX
+  SCNo8 SCNu8 SCNx8
+#endif
+#ifdef INT16_MAX
+  SCNd16 SCNi16
+#endif
+#ifdef UINT16_MAX
+  SCNo16 SCNu16 SCNx16
+#endif
+#ifdef INT32_MAX
+  SCNd32 SCNi32
+#endif
+#ifdef UINT32_MAX
+  SCNo32 SCNu32 SCNx32
+#endif
+#ifdef INT64_MAX
+  SCNd64 SCNi64
+#endif
+#ifdef UINT64_MAX
+  SCNo64 SCNu64 SCNx64
+#endif
+  SCNdLEAST8 SCNiLEAST8 SCNoLEAST8 SCNuLEAST8 SCNxLEAST8
+  SCNdLEAST16 SCNiLEAST16 SCNoLEAST16 SCNuLEAST16 SCNxLEAST16
+  SCNdLEAST32 SCNiLEAST32 SCNoLEAST32 SCNuLEAST32 SCNxLEAST32
+  SCNdLEAST64 SCNiLEAST64
+  SCNoLEAST64 SCNuLEAST64 SCNxLEAST64
+  SCNdFAST8 SCNiFAST8 SCNoFAST8 SCNuFAST8 SCNxFAST8
+  SCNdFAST16 SCNiFAST16 SCNoFAST16 SCNuFAST16 SCNxFAST16
+  SCNdFAST32 SCNiFAST32 SCNoFAST32 SCNuFAST32 SCNxFAST32
+  SCNdFAST64 SCNiFAST64
+  SCNoFAST64 SCNuFAST64 SCNxFAST64
+  SCNdMAX SCNiMAX SCNoMAX SCNuMAX SCNxMAX
+#ifdef INTPTR_MAX
+  SCNdPTR SCNiPTR
+#endif
+#ifdef UINTPTR_MAX
+  SCNoPTR SCNuPTR SCNxPTR
+#endif
+  ;
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-ioctl.c b/gnulib-tests/test-ioctl.c
new file mode 100644
index 0000000..e09b009
--- /dev/null
+++ b/gnulib-tests/test-ioctl.c
@@ -0,0 +1,51 @@
+/* Test of ioctl() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <sys/ioctl.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (ioctl, int, (int, int, ...));
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+#ifdef FIONREAD
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    int value;
+    errno = 0;
+    ASSERT (ioctl (-1, FIONREAD, &value) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    int value;
+    close (99);
+    errno = 0;
+    ASSERT (ioctl (99, FIONREAD, &value) == -1);
+    ASSERT (errno == EBADF);
+  }
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-isatty.c b/gnulib-tests/test-isatty.c
new file mode 100644
index 0000000..f626cd5
--- /dev/null
+++ b/gnulib-tests/test-isatty.c
@@ -0,0 +1,99 @@
+/* Test isatty() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (isatty, int, (int));
+
+#include <errno.h>
+#include <fcntl.h>
+
+#include "macros.h"
+
+/* The name of the "always silent" device.  */
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Native Windows API.  */
+# define DEV_NULL "NUL"
+#else
+/* Unix API.  */
+# define DEV_NULL "/dev/null"
+#endif
+
+int
+main (void)
+{
+  const char *file = "test-isatty.txt";
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (isatty (-1) == 0);
+    ASSERT (errno == EBADF
+            || errno == 0 /* seen on IRIX 6.5, Solaris 10 */
+           );
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (isatty (99) == 0);
+    ASSERT (errno == EBADF
+            || errno == 0 /* seen on IRIX 6.5, Solaris 10 */
+           );
+  }
+
+  /* Test behaviour for regular files.  */
+  {
+    int fd;
+
+    fd = open (file, O_WRONLY|O_CREAT|O_TRUNC, 0644);
+    ASSERT (0 <= fd);
+    ASSERT (write (fd, "hello", 5) == 5);
+    ASSERT (close (fd) == 0);
+
+    fd = open (file, O_RDONLY);
+    ASSERT (0 <= fd);
+    ASSERT (! isatty (fd));
+    ASSERT (close (fd) == 0);
+  }
+
+  /* Test behaviour for pipes.  */
+  {
+    int fd[2];
+
+    ASSERT (pipe (fd) == 0);
+    ASSERT (! isatty (fd[0]));
+    ASSERT (! isatty (fd[1]));
+    ASSERT (close (fd[0]) == 0);
+    ASSERT (close (fd[1]) == 0);
+  }
+
+  /* Test behaviour for /dev/null.  */
+  {
+    int fd;
+
+    fd = open (DEV_NULL, O_RDONLY);
+    ASSERT (0 <= fd);
+    ASSERT (! isatty (fd));
+    ASSERT (close (fd) == 0);
+  }
+
+  ASSERT (unlink (file) == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-isblank.c b/gnulib-tests/test-isblank.c
new file mode 100644
index 0000000..7dd9136
--- /dev/null
+++ b/gnulib-tests/test-isblank.c
@@ -0,0 +1,50 @@
+/* Test of isblank() function.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+#include <ctype.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (isblank, int, (int));
+
+#include <limits.h>
+#include <stdio.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  unsigned int c;
+
+  /* Verify the property in the "C" locale.
+     POSIX specifies in
+       <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap07.html>
+     that
+       - in all locales, the blank characters include the <space> and <tab>
+         characters,
+       - in the "POSIX" locale (which is usually the same as the "C" locale),
+         the blank characters include only the ASCII <space> and <tab>
+         characters.  */
+  for (c = 0; c <= UCHAR_MAX; c++)
+    ASSERT (!isblank (c) == !(c == ' ' || c == '\t'));
+  ASSERT (!isblank (EOF));
+
+  return 0;
+}
diff --git a/gnulib-tests/test-isnand-nolibm.c b/gnulib-tests/test-isnand-nolibm.c
new file mode 100644
index 0000000..8502500
--- /dev/null
+++ b/gnulib-tests/test-isnand-nolibm.c
@@ -0,0 +1,21 @@
+/* Test of isnand() substitute.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "isnand-nolibm.h"
+
+#include "test-isnand.h"
diff --git a/gnulib-tests/test-isnand.h b/gnulib-tests/test-isnand.h
new file mode 100644
index 0000000..7d2e19c
--- /dev/null
+++ b/gnulib-tests/test-isnand.h
@@ -0,0 +1,63 @@
+/* Test of isnand() substitute.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <limits.h>
+
+#include "minus-zero.h"
+#include "infinity.h"
+#include "nan.h"
+#include "macros.h"
+
+int
+main ()
+{
+  /* Finite values.  */
+  ASSERT (!isnand (3.141));
+  ASSERT (!isnand (3.141e30));
+  ASSERT (!isnand (3.141e-30));
+  ASSERT (!isnand (-2.718));
+  ASSERT (!isnand (-2.718e30));
+  ASSERT (!isnand (-2.718e-30));
+  ASSERT (!isnand (0.0));
+  ASSERT (!isnand (minus_zerod));
+  /* Infinite values.  */
+  ASSERT (!isnand (Infinityd ()));
+  ASSERT (!isnand (- Infinityd ()));
+  /* Quiet NaN.  */
+  ASSERT (isnand (NaNd ()));
+#if defined DBL_EXPBIT0_WORD && defined DBL_EXPBIT0_BIT
+  /* Signalling NaN.  */
+  {
+    #define NWORDS \
+      ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+    typedef union { double value; unsigned int word[NWORDS]; } memory_double;
+    memory_double m;
+    m.value = NaNd ();
+# if DBL_EXPBIT0_BIT > 0
+    m.word[DBL_EXPBIT0_WORD] ^= (unsigned int) 1 << (DBL_EXPBIT0_BIT - 1);
+# else
+    m.word[DBL_EXPBIT0_WORD + (DBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)]
+      ^= (unsigned int) 1 << (sizeof (unsigned int) * CHAR_BIT - 1);
+# endif
+    m.word[DBL_EXPBIT0_WORD + (DBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)]
+      |= (unsigned int) 1 << DBL_EXPBIT0_BIT;
+    ASSERT (isnand (m.value));
+  }
+#endif
+  return 0;
+}
diff --git a/gnulib-tests/test-isnanf-nolibm.c b/gnulib-tests/test-isnanf-nolibm.c
new file mode 100644
index 0000000..3c2c971
--- /dev/null
+++ b/gnulib-tests/test-isnanf-nolibm.c
@@ -0,0 +1,21 @@
+/* Test of isnanf() substitute.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "isnanf-nolibm.h"
+
+#include "test-isnanf.h"
diff --git a/gnulib-tests/test-isnanf.h b/gnulib-tests/test-isnanf.h
new file mode 100644
index 0000000..e5c5594
--- /dev/null
+++ b/gnulib-tests/test-isnanf.h
@@ -0,0 +1,65 @@
+/* Test of isnanf() substitute.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <limits.h>
+
+#include "minus-zero.h"
+#include "infinity.h"
+#include "nan.h"
+#include "macros.h"
+
+int
+main ()
+{
+  /* Finite values.  */
+  ASSERT (!isnanf (3.141f));
+  ASSERT (!isnanf (3.141e30f));
+  ASSERT (!isnanf (3.141e-30f));
+  ASSERT (!isnanf (-2.718f));
+  ASSERT (!isnanf (-2.718e30f));
+  ASSERT (!isnanf (-2.718e-30f));
+  ASSERT (!isnanf (0.0f));
+  ASSERT (!isnanf (minus_zerof));
+  /* Infinite values.  */
+  ASSERT (!isnanf (Infinityf ()));
+  ASSERT (!isnanf (- Infinityf ()));
+  /* Quiet NaN.  */
+  ASSERT (isnanf (NaNf ()));
+#if defined FLT_EXPBIT0_WORD && defined FLT_EXPBIT0_BIT
+  /* Signalling NaN.  */
+  {
+    #define NWORDS \
+      ((sizeof (float) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+    typedef union { float value; unsigned int word[NWORDS]; } memory_float;
+    memory_float m;
+    m.value = NaNf ();
+# if FLT_EXPBIT0_BIT > 0
+    m.word[FLT_EXPBIT0_WORD] ^= (unsigned int) 1 << (FLT_EXPBIT0_BIT - 1);
+# else
+    m.word[FLT_EXPBIT0_WORD + (FLT_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)]
+      ^= (unsigned int) 1 << (sizeof (unsigned int) * CHAR_BIT - 1);
+# endif
+    if (FLT_EXPBIT0_WORD < NWORDS / 2)
+      m.word[FLT_EXPBIT0_WORD + 1] |= (unsigned int) 1 << FLT_EXPBIT0_BIT;
+    else
+      m.word[0] |= (unsigned int) 1;
+    ASSERT (isnanf (m.value));
+  }
+#endif
+  return 0;
+}
diff --git a/gnulib-tests/test-isnanl-nolibm.c b/gnulib-tests/test-isnanl-nolibm.c
new file mode 100644
index 0000000..49e9420
--- /dev/null
+++ b/gnulib-tests/test-isnanl-nolibm.c
@@ -0,0 +1,23 @@
+/* Test of isnanl() substitute.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "isnanl-nolibm.h"
+
+#include "test-isnanl.h"
diff --git a/gnulib-tests/test-isnanl.h b/gnulib-tests/test-isnanl.h
new file mode 100644
index 0000000..89030b9
--- /dev/null
+++ b/gnulib-tests/test-isnanl.h
@@ -0,0 +1,130 @@
+/* Test of isnanl() substitute.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <float.h>
+#include <limits.h>
+
+#include "minus-zero.h"
+#include "infinity.h"
+#include "nan.h"
+#include "macros.h"
+
+int
+main ()
+{
+  #define NWORDS \
+    ((sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+  typedef union { unsigned int word[NWORDS]; long double value; }
+          memory_long_double;
+
+  /* Finite values.  */
+  ASSERT (!isnanl (3.141L));
+  ASSERT (!isnanl (3.141e30L));
+  ASSERT (!isnanl (3.141e-30L));
+  ASSERT (!isnanl (-2.718L));
+  ASSERT (!isnanl (-2.718e30L));
+  ASSERT (!isnanl (-2.718e-30L));
+  ASSERT (!isnanl (0.0L));
+  ASSERT (!isnanl (minus_zerol));
+  /* Infinite values.  */
+  ASSERT (!isnanl (Infinityl ()));
+  ASSERT (!isnanl (- Infinityl ()));
+  /* Quiet NaN.  */
+  ASSERT (isnanl (NaNl ()));
+
+#if defined LDBL_EXPBIT0_WORD && defined LDBL_EXPBIT0_BIT
+  /* A bit pattern that is different from a Quiet NaN.  With a bit of luck,
+     it's a Signalling NaN.  */
+  {
+#if defined __powerpc__ && LDBL_MANT_DIG == 106
+    /* This is PowerPC "double double", a pair of two doubles.  Inf and Nan are
+       represented as the corresponding 64-bit IEEE values in the first double;
+       the second is ignored.  Manipulate only the first double.  */
+    #undef NWORDS
+    #define NWORDS \
+      ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+#endif
+
+    memory_long_double m;
+    m.value = NaNl ();
+# if LDBL_EXPBIT0_BIT > 0
+    m.word[LDBL_EXPBIT0_WORD] ^= (unsigned int) 1 << (LDBL_EXPBIT0_BIT - 1);
+# else
+    m.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)]
+      ^= (unsigned int) 1 << (sizeof (unsigned int) * CHAR_BIT - 1);
+# endif
+    m.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)]
+      |= (unsigned int) 1 << LDBL_EXPBIT0_BIT;
+    ASSERT (isnanl (m.value));
+  }
+#endif
+
+#if ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) && !HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
+/* Representation of an 80-bit 'long double' as an initializer for a sequence
+   of 'unsigned int' words.  */
+# ifdef WORDS_BIGENDIAN
+#  define LDBL80_WORDS(exponent,manthi,mantlo) \
+     { ((unsigned int) (exponent) << 16) | ((unsigned int) (manthi) >> 16), \
+       ((unsigned int) (manthi) << 16) | ((unsigned int) (mantlo) >> 16),   \
+       (unsigned int) (mantlo) << 16                                        \
+     }
+# else
+#  define LDBL80_WORDS(exponent,manthi,mantlo) \
+     { mantlo, manthi, exponent }
+# endif
+  { /* Quiet NaN.  */
+    static memory_long_double x =
+      { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) };
+    ASSERT (isnanl (x.value));
+  }
+  {
+    /* Signalling NaN.  */
+    static memory_long_double x =
+      { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
+    ASSERT (isnanl (x.value));
+  }
+  /* isnanl should return something for noncanonical values.  */
+  { /* Pseudo-NaN.  */
+    static memory_long_double x =
+      { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) };
+    ASSERT (isnanl (x.value) || !isnanl (x.value));
+  }
+  { /* Pseudo-Infinity.  */
+    static memory_long_double x =
+      { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
+    ASSERT (isnanl (x.value) || !isnanl (x.value));
+  }
+  { /* Pseudo-Zero.  */
+    static memory_long_double x =
+      { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
+    ASSERT (isnanl (x.value) || !isnanl (x.value));
+  }
+  { /* Unnormalized number.  */
+    static memory_long_double x =
+      { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
+    ASSERT (isnanl (x.value) || !isnanl (x.value));
+  }
+  { /* Pseudo-Denormal.  */
+    static memory_long_double x =
+      { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
+    ASSERT (isnanl (x.value) || !isnanl (x.value));
+  }
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-iswblank.c b/gnulib-tests/test-iswblank.c
new file mode 100644
index 0000000..40c58db
--- /dev/null
+++ b/gnulib-tests/test-iswblank.c
@@ -0,0 +1,35 @@
+/* Test of iswblank() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <wctype.h>
+
+#include "macros.h"
+
+/* Check that WEOF is defined.  */
+wint_t e = WEOF;
+
+int
+main (void)
+{
+  /* Check that the function exist as a function or as a macro.  */
+  (void) iswblank (0);
+  /* Check that the isw* functions map WEOF to 0.  */
+  ASSERT (!iswblank (e));
+
+  return 0;
+}
diff --git a/gnulib-tests/test-iswdigit.c b/gnulib-tests/test-iswdigit.c
new file mode 100644
index 0000000..a7f8ef5
--- /dev/null
+++ b/gnulib-tests/test-iswdigit.c
@@ -0,0 +1,233 @@
+/* Test of iswdigit() function.
+   Copyright (C) 2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <wctype.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (iswdigit, int, (wint_t));
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+
+#include "macros.h"
+
+/* Returns the value of iswdigit for the multibyte character s[0..n-1].  */
+static int
+for_character (const char *s, size_t n)
+{
+  mbstate_t state;
+  wchar_t wc;
+  size_t ret;
+
+  memset (&state, '\0', sizeof (mbstate_t));
+  wc = (wchar_t) 0xBADFACE;
+  ret = mbrtowc (&wc, s, n, &state);
+  if (ret == n)
+    return iswdigit (wc);
+  else
+    return 0;
+}
+
+int
+main (int argc, char *argv[])
+{
+  int is;
+  char buf[4];
+
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  /* Test WEOF.  */
+  is = iswdigit (WEOF);
+  ASSERT (is == 0);
+
+  /* Test single-byte characters.
+     ISO C 99 sections 7.25.2.1.5 and 5.2.1 specify that the decimal digits
+     include only the ASCII 0 ... 9 characters.  */
+  {
+    int c;
+
+    for (c = 0; c < 0x100; c++)
+      switch (c)
+        {
+        case '\t': case '\v': case '\f':
+        case ' ': case '!': case '"': case '#': case '%':
+        case '&': case '\'': case '(': case ')': case '*':
+        case '+': case ',': case '-': case '.': case '/':
+        case '0': case '1': case '2': case '3': case '4':
+        case '5': case '6': case '7': case '8': case '9':
+        case ':': case ';': case '<': case '=': case '>':
+        case '?':
+        case 'A': case 'B': case 'C': case 'D': case 'E':
+        case 'F': case 'G': case 'H': case 'I': case 'J':
+        case 'K': case 'L': case 'M': case 'N': case 'O':
+        case 'P': case 'Q': case 'R': case 'S': case 'T':
+        case 'U': case 'V': case 'W': case 'X': case 'Y':
+        case 'Z':
+        case '[': case '\\': case ']': case '^': case '_':
+        case 'a': case 'b': case 'c': case 'd': case 'e':
+        case 'f': case 'g': case 'h': case 'i': case 'j':
+        case 'k': case 'l': case 'm': case 'n': case 'o':
+        case 'p': case 'q': case 'r': case 's': case 't':
+        case 'u': case 'v': case 'w': case 'x': case 'y':
+        case 'z': case '{': case '|': case '}': case '~':
+          /* c is in the ISO C "basic character set".  */
+          buf[0] = (unsigned char) c;
+          is = for_character (buf, 1);
+          switch (c)
+            {
+            case '0': case '1': case '2': case '3': case '4':
+            case '5': case '6': case '7': case '8': case '9':
+              ASSERT (is != 0);
+              break;
+            default:
+              ASSERT (is == 0);
+              break;
+            }
+          break;
+        }
+  }
+
+  if (argc > 1)
+    switch (argv[1][0])
+      {
+      case '0':
+        /* C locale; tested above.  */
+        return 0;
+
+      case '1':
+        /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          is = for_character ("\262", 1);
+          ASSERT (is == 0);
+          /* U+00B3 SUPERSCRIPT THREE */
+          is = for_character ("\263", 1);
+          ASSERT (is == 0);
+          /* U+00B9 SUPERSCRIPT ONE */
+          is = for_character ("\271", 1);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      case '2':
+        /* Locale encoding is EUC-JP.  */
+        {
+          /* U+FF11 FULLWIDTH DIGIT ONE */
+          is = for_character ("\243\261", 2);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      case '3':
+        /* Locale encoding is UTF-8.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          is = for_character ("\302\262", 2);
+          ASSERT (is == 0);
+          /* U+00B3 SUPERSCRIPT THREE */
+          is = for_character ("\302\263", 2);
+          ASSERT (is == 0);
+          /* U+00B9 SUPERSCRIPT ONE */
+          is = for_character ("\302\271", 2);
+          ASSERT (is == 0);
+          /* U+0663 ARABIC-INDIC DIGIT THREE */
+          is = for_character ("\331\243", 2);
+          ASSERT (is == 0);
+          /* U+2070 SUPERSCRIPT ZERO */
+          is = for_character ("\342\201\260", 3);
+          ASSERT (is == 0);
+          /* U+2079 SUPERSCRIPT NINE */
+          is = for_character ("\342\201\271", 3);
+          ASSERT (is == 0);
+          /* U+FF11 FULLWIDTH DIGIT ONE */
+          is = for_character ("\357\274\221", 3);
+          ASSERT (is == 0);
+          /* U+1D7D1 MATHEMATICAL BOLD DIGIT THREE */
+          is = for_character ("\360\235\237\221", 4);
+          ASSERT (is == 0);
+          /* U+1D7DB MATHEMATICAL DOUBLE-STRUCK DIGIT THREE */
+          is = for_character ("\360\235\237\233", 4);
+          ASSERT (is == 0);
+          /* U+1D7E5 MATHEMATICAL SANS-SERIF DIGIT THREE */
+          is = for_character ("\360\235\237\245", 4);
+          ASSERT (is == 0);
+          /* U+1D7EF MATHEMATICAL SANS-SERIF BOLD DIGIT THREE */
+          is = for_character ("\360\235\237\257", 4);
+          ASSERT (is == 0);
+          /* U+1D7F9 MATHEMATICAL MONOSPACE DIGIT THREE */
+          is = for_character ("\360\235\237\271", 4);
+          ASSERT (is == 0);
+          /* U+E0033 TAG DIGIT THREE */
+          is = for_character ("\363\240\200\263", 4);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      case '4':
+        /* Locale encoding is GB18030.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          is = for_character ("\201\060\205\065", 4);
+          ASSERT (is == 0);
+          /* U+00B3 SUPERSCRIPT THREE */
+          is = for_character ("\201\060\205\066", 4);
+          ASSERT (is == 0);
+          /* U+00B9 SUPERSCRIPT ONE */
+          is = for_character ("\201\060\206\061", 4);
+          ASSERT (is == 0);
+          /* U+0663 ARABIC-INDIC DIGIT THREE */
+          is = for_character ("\201\061\211\071", 4);
+          ASSERT (is == 0);
+          /* U+2070 SUPERSCRIPT ZERO */
+          is = for_character ("\201\066\255\062", 4);
+          ASSERT (is == 0);
+          /* U+2079 SUPERSCRIPT NINE */
+          is = for_character ("\201\066\256\061", 4);
+          ASSERT (is == 0);
+          /* U+FF11 FULLWIDTH DIGIT ONE */
+          is = for_character ("\243\261", 2);
+          ASSERT (is == 0);
+          /* U+1D7D1 MATHEMATICAL BOLD DIGIT THREE */
+          is = for_character ("\224\063\353\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7DB MATHEMATICAL DOUBLE-STRUCK DIGIT THREE */
+          is = for_character ("\224\063\354\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7E5 MATHEMATICAL SANS-SERIF DIGIT THREE */
+          is = for_character ("\224\063\355\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7EF MATHEMATICAL SANS-SERIF BOLD DIGIT THREE */
+          is = for_character ("\224\063\356\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7F9 MATHEMATICAL MONOSPACE DIGIT THREE */
+          is = for_character ("\224\063\357\071", 4);
+          ASSERT (is == 0);
+          /* U+E0033 TAG DIGIT THREE */
+          is = for_character ("\323\066\232\071", 4);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      }
+
+  return 1;
+}
diff --git a/gnulib-tests/test-iswdigit.sh b/gnulib-tests/test-iswdigit.sh
new file mode 100755
index 0000000..1bde602
--- /dev/null
+++ b/gnulib-tests/test-iswdigit.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+
+# Test in the POSIX locale.
+LC_ALL=C     ${CHECKER} ./test-iswdigit${EXEEXT} 0 || exit 1
+LC_ALL=POSIX ${CHECKER} ./test-iswdigit${EXEEXT} 0 || exit 1
+
+# Test in an ISO-8859-1 or ISO-8859-15 locale.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR \
+  ${CHECKER} ./test-iswdigit${EXEEXT} 1 \
+  || exit 1
+fi
+
+# Test whether a specific EUC-JP locale is installed.
+: ${LOCALE_JA=ja_JP}
+if test $LOCALE_JA != none; then
+  LC_ALL=$LOCALE_JA \
+  ${CHECKER} ./test-iswdigit${EXEEXT} 2 \
+  || exit 1
+fi
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 != none; then
+  LC_ALL=$LOCALE_FR_UTF8 \
+  ${CHECKER} ./test-iswdigit${EXEEXT} 3 \
+  || exit 1
+fi
+
+# Test whether a specific GB18030 locale is installed.
+: ${LOCALE_ZH_CN=zh_CN.GB18030}
+if test $LOCALE_ZH_CN != none; then
+  LC_ALL=$LOCALE_ZH_CN \
+  ${CHECKER} ./test-iswdigit${EXEEXT} 4 \
+  || exit 1
+fi
+
+exit 0
diff --git a/gnulib-tests/test-iswxdigit.c b/gnulib-tests/test-iswxdigit.c
new file mode 100644
index 0000000..77aa0f0
--- /dev/null
+++ b/gnulib-tests/test-iswxdigit.c
@@ -0,0 +1,259 @@
+/* Test of iswxdigit() function.
+   Copyright (C) 2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <wctype.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (iswxdigit, int, (wint_t));
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+
+#include "macros.h"
+
+/* Returns the value of iswxdigit for the multibyte character s[0..n-1].  */
+static int
+for_character (const char *s, size_t n)
+{
+  mbstate_t state;
+  wchar_t wc;
+  size_t ret;
+
+  memset (&state, '\0', sizeof (mbstate_t));
+  wc = (wchar_t) 0xBADFACE;
+  ret = mbrtowc (&wc, s, n, &state);
+  if (ret == n)
+    return iswxdigit (wc);
+  else
+    return 0;
+}
+
+int
+main (int argc, char *argv[])
+{
+  int is;
+  char buf[4];
+
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  /* Test WEOF.  */
+  is = iswxdigit (WEOF);
+  ASSERT (is == 0);
+
+  /* Test single-byte characters.
+     ISO C 99 sections 7.25.2.1.12 and 6.4.4.1 specify that the hexadecimal
+     digits include only the ASCII 0 ... 9 A ... F a ... f characters.  */
+  {
+    int c;
+
+    for (c = 0; c < 0x100; c++)
+      switch (c)
+        {
+        case '\t': case '\v': case '\f':
+        case ' ': case '!': case '"': case '#': case '%':
+        case '&': case '\'': case '(': case ')': case '*':
+        case '+': case ',': case '-': case '.': case '/':
+        case '0': case '1': case '2': case '3': case '4':
+        case '5': case '6': case '7': case '8': case '9':
+        case ':': case ';': case '<': case '=': case '>':
+        case '?':
+        case 'A': case 'B': case 'C': case 'D': case 'E':
+        case 'F': case 'G': case 'H': case 'I': case 'J':
+        case 'K': case 'L': case 'M': case 'N': case 'O':
+        case 'P': case 'Q': case 'R': case 'S': case 'T':
+        case 'U': case 'V': case 'W': case 'X': case 'Y':
+        case 'Z':
+        case '[': case '\\': case ']': case '^': case '_':
+        case 'a': case 'b': case 'c': case 'd': case 'e':
+        case 'f': case 'g': case 'h': case 'i': case 'j':
+        case 'k': case 'l': case 'm': case 'n': case 'o':
+        case 'p': case 'q': case 'r': case 's': case 't':
+        case 'u': case 'v': case 'w': case 'x': case 'y':
+        case 'z': case '{': case '|': case '}': case '~':
+          /* c is in the ISO C "basic character set".  */
+          buf[0] = (unsigned char) c;
+          is = for_character (buf, 1);
+          switch (c)
+            {
+            case '0': case '1': case '2': case '3': case '4':
+            case '5': case '6': case '7': case '8': case '9':
+            case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+            case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
+              ASSERT (is != 0);
+              break;
+            default:
+              ASSERT (is == 0);
+              break;
+            }
+          break;
+        }
+  }
+
+  if (argc > 1)
+    switch (argv[1][0])
+      {
+      case '0':
+        /* C locale; tested above.  */
+        return 0;
+
+      case '1':
+        /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          is = for_character ("\262", 1);
+          ASSERT (is == 0);
+          /* U+00B3 SUPERSCRIPT THREE */
+          is = for_character ("\263", 1);
+          ASSERT (is == 0);
+          /* U+00B9 SUPERSCRIPT ONE */
+          is = for_character ("\271", 1);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      case '2':
+        /* Locale encoding is EUC-JP.  */
+        {
+          /* U+FF11 FULLWIDTH DIGIT ONE */
+          is = for_character ("\243\261", 2);
+          ASSERT (is == 0);
+          /* U+FF21 FULLWIDTH LATIN CAPITAL LETTER A */
+          is = for_character ("\243\301", 2);
+          ASSERT (is == 0);
+          /* U+FF41 FULLWIDTH LATIN SMALL LETTER A */
+          is = for_character ("\243\341", 2);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      case '3':
+        /* Locale encoding is UTF-8.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          is = for_character ("\302\262", 2);
+          ASSERT (is == 0);
+          /* U+00B3 SUPERSCRIPT THREE */
+          is = for_character ("\302\263", 2);
+          ASSERT (is == 0);
+          /* U+00B9 SUPERSCRIPT ONE */
+          is = for_character ("\302\271", 2);
+          ASSERT (is == 0);
+          /* U+0663 ARABIC-INDIC DIGIT THREE */
+          is = for_character ("\331\243", 2);
+          ASSERT (is == 0);
+          /* U+2070 SUPERSCRIPT ZERO */
+          is = for_character ("\342\201\260", 3);
+          ASSERT (is == 0);
+          /* U+2079 SUPERSCRIPT NINE */
+          is = for_character ("\342\201\271", 3);
+          ASSERT (is == 0);
+          /* U+FF11 FULLWIDTH DIGIT ONE */
+          is = for_character ("\357\274\221", 3);
+          ASSERT (is == 0);
+          /* U+FF21 FULLWIDTH LATIN CAPITAL LETTER A */
+          is = for_character ("\357\274\241", 3);
+          ASSERT (is == 0);
+          /* U+FF41 FULLWIDTH LATIN SMALL LETTER A */
+          is = for_character ("\357\275\201", 3);
+          ASSERT (is == 0);
+          /* U+1D7D1 MATHEMATICAL BOLD DIGIT THREE */
+          is = for_character ("\360\235\237\221", 4);
+          ASSERT (is == 0);
+          /* U+1D7DB MATHEMATICAL DOUBLE-STRUCK DIGIT THREE */
+          is = for_character ("\360\235\237\233", 4);
+          ASSERT (is == 0);
+          /* U+1D7E5 MATHEMATICAL SANS-SERIF DIGIT THREE */
+          is = for_character ("\360\235\237\245", 4);
+          ASSERT (is == 0);
+          /* U+1D7EF MATHEMATICAL SANS-SERIF BOLD DIGIT THREE */
+          is = for_character ("\360\235\237\257", 4);
+          ASSERT (is == 0);
+          /* U+1D7F9 MATHEMATICAL MONOSPACE DIGIT THREE */
+          is = for_character ("\360\235\237\271", 4);
+          ASSERT (is == 0);
+          /* U+E0033 TAG DIGIT THREE */
+          is = for_character ("\363\240\200\263", 4);
+          ASSERT (is == 0);
+          /* U+E0041 TAG LATIN CAPITAL LETTER A */
+          is = for_character ("\363\240\201\201", 4);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      case '4':
+        /* Locale encoding is GB18030.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          is = for_character ("\201\060\205\065", 4);
+          ASSERT (is == 0);
+          /* U+00B3 SUPERSCRIPT THREE */
+          is = for_character ("\201\060\205\066", 4);
+          ASSERT (is == 0);
+          /* U+00B9 SUPERSCRIPT ONE */
+          is = for_character ("\201\060\206\061", 4);
+          ASSERT (is == 0);
+          /* U+0663 ARABIC-INDIC DIGIT THREE */
+          is = for_character ("\201\061\211\071", 4);
+          ASSERT (is == 0);
+          /* U+2070 SUPERSCRIPT ZERO */
+          is = for_character ("\201\066\255\062", 4);
+          ASSERT (is == 0);
+          /* U+2079 SUPERSCRIPT NINE */
+          is = for_character ("\201\066\256\061", 4);
+          ASSERT (is == 0);
+          /* U+FF11 FULLWIDTH DIGIT ONE */
+          is = for_character ("\243\261", 2);
+          ASSERT (is == 0);
+          /* U+FF21 FULLWIDTH LATIN CAPITAL LETTER A */
+          is = for_character ("\243\301", 2);
+          ASSERT (is == 0);
+          /* U+FF41 FULLWIDTH LATIN SMALL LETTER A */
+          is = for_character ("\243\341", 2);
+          ASSERT (is == 0);
+          /* U+1D7D1 MATHEMATICAL BOLD DIGIT THREE */
+          is = for_character ("\224\063\353\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7DB MATHEMATICAL DOUBLE-STRUCK DIGIT THREE */
+          is = for_character ("\224\063\354\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7E5 MATHEMATICAL SANS-SERIF DIGIT THREE */
+          is = for_character ("\224\063\355\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7EF MATHEMATICAL SANS-SERIF BOLD DIGIT THREE */
+          is = for_character ("\224\063\356\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7F9 MATHEMATICAL MONOSPACE DIGIT THREE */
+          is = for_character ("\224\063\357\071", 4);
+          ASSERT (is == 0);
+          /* U+E0033 TAG DIGIT THREE */
+          is = for_character ("\323\066\232\071", 4);
+          ASSERT (is == 0);
+          /* U+E0041 TAG LATIN CAPITAL LETTER A */
+          is = for_character ("\323\066\234\063", 4);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      }
+
+  return 1;
+}
diff --git a/gnulib-tests/test-iswxdigit.sh b/gnulib-tests/test-iswxdigit.sh
new file mode 100755
index 0000000..f545438
--- /dev/null
+++ b/gnulib-tests/test-iswxdigit.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+
+# Test in the POSIX locale.
+LC_ALL=C     ${CHECKER} ./test-iswxdigit${EXEEXT} 0 || exit 1
+LC_ALL=POSIX ${CHECKER} ./test-iswxdigit${EXEEXT} 0 || exit 1
+
+# Test in an ISO-8859-1 or ISO-8859-15 locale.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR \
+  ${CHECKER} ./test-iswxdigit${EXEEXT} 1 \
+  || exit 1
+fi
+
+# Test whether a specific EUC-JP locale is installed.
+: ${LOCALE_JA=ja_JP}
+if test $LOCALE_JA != none; then
+  LC_ALL=$LOCALE_JA \
+  ${CHECKER} ./test-iswxdigit${EXEEXT} 2 \
+  || exit 1
+fi
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 != none; then
+  LC_ALL=$LOCALE_FR_UTF8 \
+  ${CHECKER} ./test-iswxdigit${EXEEXT} 3 \
+  || exit 1
+fi
+
+# Test whether a specific GB18030 locale is installed.
+: ${LOCALE_ZH_CN=zh_CN.GB18030}
+if test $LOCALE_ZH_CN != none; then
+  LC_ALL=$LOCALE_ZH_CN \
+  ${CHECKER} ./test-iswxdigit${EXEEXT} 4 \
+  || exit 1
+fi
+
+exit 0
diff --git a/gnulib-tests/test-langinfo.c b/gnulib-tests/test-langinfo.c
new file mode 100644
index 0000000..4f3bbb0
--- /dev/null
+++ b/gnulib-tests/test-langinfo.c
@@ -0,0 +1,92 @@
+/* Test of <langinfo.h> substitute.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+#include <langinfo.h>
+
+/* Check that all the nl_item values are defined.  */
+int items[] =
+  {
+    /* nl_langinfo items of the LC_CTYPE category */
+    CODESET,
+    /* nl_langinfo items of the LC_NUMERIC category */
+    RADIXCHAR,
+    THOUSEP,
+    /* nl_langinfo items of the LC_TIME category */
+    D_T_FMT,
+    D_FMT,
+    T_FMT,
+    T_FMT_AMPM,
+    AM_STR,
+    PM_STR,
+    DAY_1,
+    DAY_2,
+    DAY_3,
+    DAY_4,
+    DAY_5,
+    DAY_6,
+    DAY_7,
+    ABDAY_1,
+    ABDAY_2,
+    ABDAY_3,
+    ABDAY_4,
+    ABDAY_5,
+    ABDAY_6,
+    ABDAY_7,
+    MON_1,
+    MON_2,
+    MON_3,
+    MON_4,
+    MON_5,
+    MON_6,
+    MON_7,
+    MON_8,
+    MON_9,
+    MON_10,
+    MON_11,
+    MON_12,
+    ABMON_1,
+    ABMON_2,
+    ABMON_3,
+    ABMON_4,
+    ABMON_5,
+    ABMON_6,
+    ABMON_7,
+    ABMON_8,
+    ABMON_9,
+    ABMON_10,
+    ABMON_11,
+    ABMON_12,
+    ERA,
+    ERA_D_FMT,
+    ERA_D_T_FMT,
+    ERA_T_FMT,
+    ALT_DIGITS,
+    /* nl_langinfo items of the LC_MONETARY category */
+    CRNCYSTR,
+    /* nl_langinfo items of the LC_MESSAGES category */
+    YESEXPR,
+    NOEXPR
+  };
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-lchmod.c b/gnulib-tests/test-lchmod.c
new file mode 100644
index 0000000..783e608
--- /dev/null
+++ b/gnulib-tests/test-lchmod.c
@@ -0,0 +1,67 @@
+/* Test changing the protections of a file.
+   Copyright (C) 2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (lchmod, int, (const char *, mode_t));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define BASE "test-lchmod."
+
+int
+main (void)
+{
+  /* Test that lchmod works on non-symlinks.  */
+  {
+    struct stat statbuf;
+    unlink (BASE "file");
+    ASSERT (close (creat (BASE "file", 0600)) == 0);
+    ASSERT (lchmod (BASE "file", 0400) == 0);
+    ASSERT (stat (BASE "file", &statbuf) >= 0);
+    ASSERT ((statbuf.st_mode & 0700) == 0400);
+    /* Clean up.  */
+    ASSERT (chmod (BASE "file", 0600) == 0);
+    ASSERT (unlink (BASE "file") == 0);
+  }
+
+  /* Test that lchmod on symlinks does not modify the symlink target.  */
+  {
+    unlink (BASE "file");
+    unlink (BASE "link");
+    if (symlink (BASE "file", BASE "link") == 0)
+      {
+        struct stat statbuf;
+        ASSERT (close (creat (BASE "file", 0600)) == 0);
+        lchmod (BASE "link", 0400);
+        ASSERT (stat (BASE "file", &statbuf) >= 0);
+        ASSERT ((statbuf.st_mode & 0700) == 0600);
+      }
+    /* Clean up.  */
+    unlink (BASE "file");
+    unlink (BASE "link");
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-lchown.c b/gnulib-tests/test-lchown.c
new file mode 100644
index 0000000..b817267
--- /dev/null
+++ b/gnulib-tests/test-lchown.c
@@ -0,0 +1,49 @@
+/* Tests of lchown.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (lchown, int, (char const *, uid_t, gid_t));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+#include "mgetgroups.h"
+#include "stat-time.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-lchown.t"
+
+#include "test-lchown.h"
+
+int
+main (void)
+{
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_lchown (lchown, true);
+}
diff --git a/gnulib-tests/test-lchown.h b/gnulib-tests/test-lchown.h
new file mode 100644
index 0000000..cf29e29
--- /dev/null
+++ b/gnulib-tests/test-lchown.h
@@ -0,0 +1,260 @@
+/* Tests of lchown.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include "nap.h"
+
+#if !HAVE_GETEGID
+# define getegid() ((gid_t) -1)
+#endif
+
+#ifndef HAVE_LCHMOD
+# define HAVE_LCHMOD 0
+#endif
+
+#ifndef CHOWN_CHANGE_TIME_BUG
+# define CHOWN_CHANGE_TIME_BUG 0
+#endif
+
+/* This file is designed to test lchown(n,o,g) and
+   chownat(AT_FDCWD,n,o,g,AT_SYMLINK_NOFOLLOW).  FUNC is the function
+   to test.  Assumes that BASE and ASSERT are already defined, and
+   that appropriate headers are already included.  If PRINT, warn
+   before skipping symlink tests with status 77.  */
+
+static int
+test_lchown (int (*func) (char const *, uid_t, gid_t), bool print)
+{
+  struct stat st1;
+  struct stat st2;
+  gid_t *gids = NULL;
+  int gids_count;
+  int result;
+
+  /* Solaris 8 is interesting - if the current process belongs to
+     multiple groups, the current directory is owned by a group that
+     the current process belongs to but different than getegid(), and
+     the current directory does not have the S_ISGID bit, then regular
+     files created in the directory belong to the directory's group,
+     but symlinks belong to the current effective group id.  If
+     S_ISGID is set, then both files and symlinks belong to the
+     directory's group.  However, it is possible to run the testsuite
+     from within a directory owned by a group we don't belong to, in
+     which case all things that we create belong to the current
+     effective gid.  So, work around the issues by creating a
+     subdirectory (we are guaranteed that the subdirectory will be
+     owned by one of our current groups), change ownership of that
+     directory to the current effective gid (which will thus succeed),
+     then create all other files within that directory (eliminating
+     questions on whether inheritance or current id triumphs, since
+     the two methods resolve to the same gid).  */
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  ASSERT (stat (BASE "dir", &st1) == 0);
+
+  /* Filter out mingw and file systems which have no concept of groups.  */
+  result = func (BASE "dir", st1.st_uid, getegid ());
+  if (result == -1 && (errno == ENOSYS || errno == EPERM))
+    {
+      ASSERT (rmdir (BASE "dir") == 0);
+      if (print)
+        fputs ("skipping test: no support for ownership\n", stderr);
+      return 77;
+    }
+  ASSERT (result == 0);
+
+  ASSERT (close (creat (BASE "dir/file", 0600)) == 0);
+  ASSERT (stat (BASE "dir/file", &st1) == 0);
+  ASSERT (st1.st_uid != (uid_t) -1);
+  ASSERT (st1.st_gid != (gid_t) -1);
+  ASSERT (st1.st_gid == getegid ());
+
+  /* Sanity check of error cases.  */
+  errno = 0;
+  ASSERT (func ("", -1, -1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("no_such", -1, -1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("no_such/", -1, -1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (BASE "dir/file/", -1, -1) == -1);
+  ASSERT (errno == ENOTDIR);
+
+  /* Check that -1 does not alter ownership.  */
+  ASSERT (func (BASE "dir/file", -1, st1.st_gid) == 0);
+  ASSERT (func (BASE "dir/file", st1.st_uid, -1) == 0);
+  ASSERT (func (BASE "dir/file", (uid_t) -1, (gid_t) -1) == 0);
+  ASSERT (stat (BASE "dir/file", &st2) == 0);
+  ASSERT (st1.st_uid == st2.st_uid);
+  ASSERT (st1.st_gid == st2.st_gid);
+
+  /* Even if the values aren't changing, ctime is required to change
+     if at least one argument is not -1.  */
+  nap ();
+  ASSERT (func (BASE "dir/file", st1.st_uid, st1.st_gid) == 0);
+  ASSERT (stat (BASE "dir/file", &st2) == 0);
+  ASSERT (st1.st_ctime < st2.st_ctime
+          || (st1.st_ctime == st2.st_ctime
+              && get_stat_ctime_ns (&st1) < get_stat_ctime_ns (&st2)));
+
+  /* Test symlink behavior.  */
+  if (symlink ("link", BASE "dir/link2"))
+    {
+      ASSERT (unlink (BASE "dir/file") == 0);
+      ASSERT (rmdir (BASE "dir") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  result = func (BASE "dir/link2", -1, -1);
+  if (result == -1 && (errno == ENOSYS || errno == EOPNOTSUPP))
+    {
+      ASSERT (unlink (BASE "dir/file") == 0);
+      ASSERT (unlink (BASE "dir/link2") == 0);
+      ASSERT (rmdir (BASE "dir") == 0);
+      if (print)
+        fputs ("skipping test: symlink ownership not supported\n", stderr);
+      return 77;
+    }
+  ASSERT (result == 0);
+  errno = 0;
+  ASSERT (func (BASE "dir/link2/", st1.st_uid, st1.st_gid) == -1);
+  ASSERT (errno == ENOENT);
+  ASSERT (symlink ("file", BASE "dir/link") == 0);
+  ASSERT (mkdir (BASE "dir/sub", 0700) == 0);
+  ASSERT (symlink ("sub", BASE "dir/link3") == 0);
+
+  /* For non-privileged users, lchown can only portably succeed at
+     changing group ownership of a file we own.  If we belong to at
+     least two groups, then verifying the correct change is simple.
+     But if we belong to only one group, then we fall back on the
+     other observable effect of lchown: the ctime must be updated.  */
+  gids_count = mgetgroups (NULL, st1.st_gid, &gids);
+  if (1 < gids_count)
+    {
+      ASSERT (gids[1] != st1.st_gid);
+      ASSERT (gids[1] != (gid_t) -1);
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+
+      errno = 0;
+      ASSERT (func (BASE "dir/link2/", -1, gids[1]) == -1);
+      ASSERT (errno == ENOTDIR);
+      ASSERT (stat (BASE "dir/file", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+
+      ASSERT (func (BASE "dir/link2", -1, gids[1]) == 0);
+      ASSERT (stat (BASE "dir/file", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (gids[1] == st2.st_gid);
+
+      /* Trailing slash follows through to directory.  */
+      ASSERT (lstat (BASE "dir/link3", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/sub", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+
+      ASSERT (func (BASE "dir/link3/", -1, gids[1]) == 0);
+      ASSERT (lstat (BASE "dir/link3", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/sub", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (gids[1] == st2.st_gid);
+    }
+  else if (!CHOWN_CHANGE_TIME_BUG || HAVE_LCHMOD)
+    {
+      /* If we don't have lchmod, and lchown fails to change ctime,
+         then we can't test this part of lchown.  */
+      struct stat l1;
+      struct stat l2;
+      ASSERT (stat (BASE "dir/file", &st1) == 0);
+      ASSERT (lstat (BASE "dir/link", &l1) == 0);
+      ASSERT (lstat (BASE "dir/link2", &l2) == 0);
+
+      nap ();
+      errno = 0;
+      ASSERT (func (BASE "dir/link2/", -1, st1.st_gid) == -1);
+      ASSERT (errno == ENOTDIR);
+      ASSERT (stat (BASE "dir/file", &st2) == 0);
+      ASSERT (st1.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&st1) == get_stat_ctime_ns (&st2));
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (l1.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&l1) == get_stat_ctime_ns (&st2));
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (l2.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&l2) == get_stat_ctime_ns (&st2));
+
+      ASSERT (func (BASE "dir/link2", -1, st1.st_gid) == 0);
+      ASSERT (stat (BASE "dir/file", &st2) == 0);
+      ASSERT (st1.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&st1) == get_stat_ctime_ns (&st2));
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (l1.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&l1) == get_stat_ctime_ns (&st2));
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (l2.st_ctime < st2.st_ctime
+              || (l2.st_ctime == st2.st_ctime
+                  && get_stat_ctime_ns (&l2) < get_stat_ctime_ns (&st2)));
+
+      /* Trailing slash follows through to directory.  */
+      ASSERT (lstat (BASE "dir/sub", &st1) == 0);
+      ASSERT (lstat (BASE "dir/link3", &l1) == 0);
+      nap ();
+      ASSERT (func (BASE "dir/link3/", -1, st1.st_gid) == 0);
+      ASSERT (lstat (BASE "dir/link3", &st2) == 0);
+      ASSERT (l1.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&l1) == get_stat_ctime_ns (&st2));
+      ASSERT (lstat (BASE "dir/sub", &st2) == 0);
+      ASSERT (st1.st_ctime < st2.st_ctime
+              || (st1.st_ctime == st2.st_ctime
+                  && get_stat_ctime_ns (&st1) < get_stat_ctime_ns (&st2)));
+    }
+
+  /* Cleanup.  */
+  free (gids);
+  ASSERT (unlink (BASE "dir/file") == 0);
+  ASSERT (unlink (BASE "dir/link") == 0);
+  ASSERT (unlink (BASE "dir/link2") == 0);
+  ASSERT (unlink (BASE "dir/link3") == 0);
+  ASSERT (rmdir (BASE "dir/sub") == 0);
+  ASSERT (rmdir (BASE "dir") == 0);
+  return 0;
+}
diff --git a/gnulib-tests/test-limits-h.c b/gnulib-tests/test-limits-h.c
new file mode 100644
index 0000000..2629c96
--- /dev/null
+++ b/gnulib-tests/test-limits-h.c
@@ -0,0 +1,117 @@
+/* Test of <limits.h> substitute.
+   Copyright 2016-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#include <config.h>
+
+#include <limits.h>
+
+#include "verify.h"
+
+#if 4 < __GNUC__ + (3 <= __GNUC_MINOR__)
+# pragma GCC diagnostic ignored "-Woverlength-strings"
+#endif
+
+#define verify_width(width, min, max) \
+  verify ((max) >> ((width) - 1 - ((min) < 0)) == 1)
+
+/* Macros borrowed from intprops.h.  */
+#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+#define TYPE_WIDTH(t) (sizeof (t) * CHAR_BIT)
+#define TYPE_MINIMUM(t) ((t) ~ TYPE_MAXIMUM (t))
+#define TYPE_MAXIMUM(t)                                                 \
+  ((t) (! TYPE_SIGNED (t)                                               \
+        ? (t) -1                                                        \
+        : ((((t) 1 << (TYPE_WIDTH (t) - 2)) - 1) * 2 + 1)))
+
+/* Type width macros.  */
+
+int type_bits[] =
+  {
+    CHAR_BIT,
+    WORD_BIT,
+    LONG_BIT
+  };
+verify_width (CHAR_BIT, CHAR_MIN, CHAR_MAX);
+verify_width (WORD_BIT, INT_MIN, INT_MAX);
+verify_width (LONG_BIT, LONG_MIN, LONG_MAX);
+
+/* Numerical limit macros.  */
+
+char               limits1[]  = { CHAR_MIN, CHAR_MAX };
+verify (TYPE_MINIMUM (char) == CHAR_MIN);
+verify (TYPE_MAXIMUM (char) == CHAR_MAX);
+
+signed char        limits2[]  = { SCHAR_MIN, SCHAR_MAX };
+verify (TYPE_MINIMUM (signed char) == SCHAR_MIN);
+verify (TYPE_MAXIMUM (signed char) == SCHAR_MAX);
+
+unsigned char      limits3[]  = { UCHAR_MAX };
+verify (TYPE_MINIMUM (unsigned char) == 0);
+verify (TYPE_MAXIMUM (unsigned char) == UCHAR_MAX);
+
+short              limits4[]  = { SHRT_MIN, SHRT_MAX };
+verify (TYPE_MINIMUM (short int) == SHRT_MIN);
+verify (TYPE_MAXIMUM (short int) == SHRT_MAX);
+
+unsigned short     limits5[]  = { USHRT_MAX };
+verify (TYPE_MINIMUM (unsigned short int) == 0);
+verify (TYPE_MAXIMUM (unsigned short int) == USHRT_MAX);
+
+int                limits6[]  = { INT_MIN, INT_MAX };
+verify (TYPE_MINIMUM (int) == INT_MIN);
+verify (TYPE_MAXIMUM (int) == INT_MAX);
+
+unsigned int       limits7[]  = { UINT_MAX };
+verify (TYPE_MINIMUM (unsigned int) == 0);
+verify (TYPE_MAXIMUM (unsigned int) == UINT_MAX);
+
+long               limits8[]  = { LONG_MIN, LONG_MAX };
+verify (TYPE_MINIMUM (long int) == LONG_MIN);
+verify (TYPE_MAXIMUM (long int) == LONG_MAX);
+
+unsigned long      limits9[]  = { ULONG_MAX };
+verify (TYPE_MINIMUM (unsigned long int) == 0);
+verify (TYPE_MAXIMUM (unsigned long int) == ULONG_MAX);
+
+long long          limits10[] = { LLONG_MIN, LLONG_MAX };
+verify (TYPE_MINIMUM (long long int) == LLONG_MIN);
+verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
+
+unsigned long long limits11[] = { ULLONG_MAX };
+verify (TYPE_MINIMUM (unsigned long long int) == 0);
+verify (TYPE_MAXIMUM (unsigned long long int) == ULLONG_MAX);
+
+/* Macros specified by ISO/IEC TS 18661-1:2014.  */
+
+verify_width (CHAR_WIDTH, CHAR_MIN, CHAR_MAX);
+verify_width (SCHAR_WIDTH, SCHAR_MIN, SCHAR_MAX);
+verify_width (UCHAR_WIDTH, 0, UCHAR_MAX);
+verify_width (SHRT_WIDTH, SHRT_MIN, SHRT_MAX);
+verify_width (USHRT_WIDTH, 0, USHRT_MAX);
+verify_width (INT_WIDTH, INT_MIN, INT_MAX);
+verify_width (UINT_WIDTH, 0, UINT_MAX);
+verify_width (LONG_WIDTH, LONG_MIN, LONG_MAX);
+verify_width (ULONG_WIDTH, 0, ULONG_MAX);
+verify_width (LLONG_WIDTH, LLONG_MIN, LLONG_MAX);
+verify_width (ULLONG_WIDTH, 0, ULLONG_MAX);
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-link.c b/gnulib-tests/test-link.c
new file mode 100644
index 0000000..5e192dc
--- /dev/null
+++ b/gnulib-tests/test-link.c
@@ -0,0 +1,47 @@
+/* Test of link() function.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (link, int, (char const *, char const *));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-link.t"
+
+#include "test-link.h"
+
+int
+main (void)
+{
+  /* Remove any garbage left from previous partial runs.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_link (link, true);
+}
diff --git a/gnulib-tests/test-link.h b/gnulib-tests/test-link.h
new file mode 100644
index 0000000..a244077
--- /dev/null
+++ b/gnulib-tests/test-link.h
@@ -0,0 +1,182 @@
+/* Test of link() function.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This file is designed to test both link(a,b) and
+   linkat(AT_FDCWD,a,AT_FDCWD,b,0).  FUNC is the function to test.
+   Assumes that BASE and ASSERT are already defined, and that
+   appropriate headers are already included.  If PRINT, warn before
+   skipping tests with status 77.  This test does not try to create
+   hard links to symlinks, but does test other aspects of symlink.  */
+
+static int
+test_link (int (*func) (char const *, char const *), bool print)
+{
+  int fd;
+  int ret;
+
+  /* Create first file.  */
+  fd = open (BASE "a", O_CREAT | O_EXCL | O_WRONLY, 0600);
+  ASSERT (0 <= fd);
+  ASSERT (write (fd, "hello", 5) == 5);
+  ASSERT (close (fd) == 0);
+
+  /* Not all file systems support link.  Mingw doesn't have reliable
+     st_nlink on hard links, but our implementation does fail with
+     EPERM on poor file systems, and we can detect the inferior stat()
+     via st_ino.  Cygwin 1.5.x copies rather than links files on those
+     file systems, but there, st_nlink and st_ino are reliable.  */
+  ret = func (BASE "a", BASE "b");
+  if (!ret)
+  {
+    struct stat st;
+    ASSERT (stat (BASE "b", &st) == 0);
+    if (st.st_ino && st.st_nlink != 2)
+      {
+        ASSERT (unlink (BASE "b") == 0);
+        errno = EPERM;
+        ret = -1;
+      }
+  }
+  if (ret == -1)
+    {
+      /* If the device does not support hard links, errno is
+         EPERM on Linux, EOPNOTSUPP on FreeBSD.  */
+      switch (errno)
+        {
+        case EPERM:
+        case EOPNOTSUPP:
+          if (print)
+            fputs ("skipping test: "
+                   "hard links not supported on this file system\n",
+                   stderr);
+          ASSERT (unlink (BASE "a") == 0);
+          return 77;
+        default:
+          perror ("link");
+          return 1;
+        }
+    }
+  ASSERT (ret == 0);
+
+  /* Now, for some behavior tests.  Modify the contents of 'b', and
+     ensure that 'a' can see it, both while 'b' exists and after.  */
+  fd = open (BASE "b", O_APPEND | O_WRONLY);
+  ASSERT (0 <= fd);
+  ASSERT (write (fd, "world", 5) == 5);
+  ASSERT (close (fd) == 0);
+  {
+    char buf[11] = { 0 };
+    fd = open (BASE "a", O_RDONLY);
+    ASSERT (0 <= fd);
+    ASSERT (read (fd, buf, 10) == 10);
+    ASSERT (strcmp (buf, "helloworld") == 0);
+    ASSERT (close (fd) == 0);
+    ASSERT (unlink (BASE "b") == 0);
+    fd = open (BASE "a", O_RDONLY);
+    ASSERT (0 <= fd);
+    ASSERT (read (fd, buf, 10) == 10);
+    ASSERT (strcmp (buf, "helloworld") == 0);
+    ASSERT (close (fd) == 0);
+  }
+
+  /* Test for various error conditions.  */
+  ASSERT (mkdir (BASE "d", 0700) == 0);
+  errno = 0;
+  ASSERT (func (BASE "a", ".") == -1);
+  ASSERT (errno == EEXIST || errno == EINVAL);
+  errno = 0;
+  ASSERT (func (BASE "a", BASE "a") == -1);
+  ASSERT (errno == EEXIST);
+  ASSERT (func (BASE "a", BASE "b") == 0);
+  errno = 0;
+  ASSERT (func (BASE "a", BASE "b") == -1);
+  ASSERT (errno == EEXIST);
+  errno = 0;
+  ASSERT (func (BASE "a", BASE "d") == -1);
+  ASSERT (errno == EEXIST);
+  errno = 0;
+  ASSERT (func (BASE "c", BASE "e") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (BASE "a", BASE "c/.") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (BASE "a/", BASE "c") == -1);
+  ASSERT (errno == ENOTDIR || errno == EINVAL);
+  errno = 0;
+  ASSERT (func (BASE "a", BASE "c/") == -1);
+  ASSERT (errno == ENOTDIR || errno == ENOENT || errno == EINVAL);
+
+  /* Most platforms reject hard links to directories, and even on
+     those that do permit it, most users can't create them.  We assume
+     that if this test is run as root and we managed to create a hard
+     link, then unlink better be able to clean it up.  */
+  {
+    int result;
+    errno = 0;
+    result = func (BASE "d", BASE "c");
+    if (result == 0)
+      {
+        /* Probably root on Solaris.  */
+        ASSERT (unlink (BASE "c") == 0);
+      }
+    else
+      {
+        /* Most everyone else.  */
+        ASSERT (errno == EPERM || errno == EACCES || errno == EISDIR);
+        errno = 0;
+        ASSERT (func (BASE "d/.", BASE "c") == -1);
+        ASSERT (errno == EPERM || errno == EACCES || errno == EISDIR
+                || errno == EINVAL);
+        errno = 0;
+        ASSERT (func (BASE "d/.//", BASE "c") == -1);
+        ASSERT (errno == EPERM || errno == EACCES || errno == EISDIR
+                || errno == EINVAL);
+      }
+  }
+  ASSERT (unlink (BASE "a") == 0);
+  errno = 0;
+  ASSERT (unlink (BASE "c") == -1);
+  ASSERT (errno == ENOENT);
+  ASSERT (rmdir (BASE "d") == 0);
+
+  /* Test invalid use of symlink.  */
+  if (symlink (BASE "a", BASE "link") != 0)
+    {
+      ASSERT (unlink (BASE "b") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  errno = 0;
+  ASSERT (func (BASE "b", BASE "link/") == -1);
+  ASSERT (errno == ENOTDIR || errno == ENOENT || errno == EEXIST
+          || errno == EINVAL);
+  errno = 0;
+  ASSERT (func (BASE "b", BASE "link") == -1);
+  ASSERT (errno == EEXIST);
+  ASSERT (rename (BASE "b", BASE "a") == 0);
+  errno = 0;
+  ASSERT (func (BASE "link/", BASE "b") == -1);
+  ASSERT (errno == ENOTDIR || errno == EEXIST || errno == EINVAL);
+
+  /* Clean up.  */
+  ASSERT (unlink (BASE "a") == 0);
+  ASSERT (unlink (BASE "link") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-linkat.c b/gnulib-tests/test-linkat.c
new file mode 100644
index 0000000..c14f851
--- /dev/null
+++ b/gnulib-tests/test-linkat.c
@@ -0,0 +1,383 @@
+/* Tests of linkat.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (linkat, int, (int, char const *, int, char const *, int));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#include "areadlink.h"
+#include "filenamecat.h"
+#include "same-inode.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-linkat.t"
+
+#include "test-link.h"
+
+static int dfd1 = AT_FDCWD;
+static int dfd2 = AT_FDCWD;
+static int flag = AT_SYMLINK_FOLLOW;
+
+/* Wrapper to test linkat like link.  */
+static int
+do_link (char const *name1, char const *name2)
+{
+  return linkat (dfd1, name1, dfd2, name2, flag);
+}
+
+/* Can we expect that link() and linkat(), when called on a symlink,
+   increment the link count of that symlink?  */
+#if LINK_FOLLOWS_SYMLINKS == 0
+# define EXPECT_LINK_HARDLINKS_SYMLINKS 1
+#elif LINK_FOLLOWS_SYMLINKS == -1
+extern int __xpg4;
+# define EXPECT_LINK_HARDLINKS_SYMLINKS (__xpg4 == 0)
+#else
+# define EXPECT_LINK_HARDLINKS_SYMLINKS 0
+#endif
+
+/* Wrapper to see if two symlinks act the same.  */
+static void
+check_same_link (char const *name1, char const *name2)
+{
+  struct stat st1;
+  struct stat st2;
+  char *contents1;
+  char *contents2;
+  ASSERT (lstat (name1, &st1) == 0);
+  ASSERT (lstat (name2, &st2) == 0);
+  contents1 = areadlink_with_size (name1, st1.st_size);
+  contents2 = areadlink_with_size (name2, st2.st_size);
+  ASSERT (contents1);
+  ASSERT (contents2);
+  ASSERT (strcmp (contents1, contents2) == 0);
+  if (EXPECT_LINK_HARDLINKS_SYMLINKS)
+    ASSERT (SAME_INODE (st1, st2));
+  free (contents1);
+  free (contents2);
+}
+
+int
+main (void)
+{
+  int i;
+  int dfd;
+  char *cwd;
+  int result;
+
+  /* Clean up any trash from prior testsuite runs.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (linkat (-1, "foo", AT_FDCWD, "bar", 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (linkat (99, "foo", AT_FDCWD, "bar", 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  ASSERT (close (creat (BASE "oo", 0600)) == 0);
+  {
+    errno = 0;
+    ASSERT (linkat (AT_FDCWD, BASE "oo", -1, "bar", 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    errno = 0;
+    ASSERT (linkat (AT_FDCWD, BASE "oo", 99, "bar", 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  ASSERT (unlink (BASE "oo") == 0);
+
+  /* Test basic link functionality, without mentioning symlinks.  */
+  result = test_link (do_link, true);
+  dfd1 = open (".", O_RDONLY);
+  ASSERT (0 <= dfd1);
+  ASSERT (test_link (do_link, false) == result);
+  dfd2 = dfd1;
+  ASSERT (test_link (do_link, false) == result);
+  dfd1 = AT_FDCWD;
+  ASSERT (test_link (do_link, false) == result);
+  flag = 0;
+  ASSERT (test_link (do_link, false) == result);
+  dfd1 = dfd2;
+  ASSERT (test_link (do_link, false) == result);
+  dfd2 = AT_FDCWD;
+  ASSERT (test_link (do_link, false) == result);
+  ASSERT (close (dfd1) == 0);
+  dfd1 = AT_FDCWD;
+  ASSERT (test_link (do_link, false) == result);
+
+  /* Create locations to manipulate.  */
+  ASSERT (mkdir (BASE "sub1", 0700) == 0);
+  ASSERT (mkdir (BASE "sub2", 0700) == 0);
+  ASSERT (close (creat (BASE "00", 0600)) == 0);
+  cwd = getcwd (NULL, 0);
+  ASSERT (cwd);
+
+  dfd = open (BASE "sub1", O_RDONLY);
+  ASSERT (0 <= dfd);
+  ASSERT (chdir (BASE "sub2") == 0);
+
+  /* There are 16 possible scenarios, based on whether an fd is
+     AT_FDCWD or real, whether a file is absolute or relative, coupled
+     with whether flag is set for 32 iterations.
+
+     To ensure that we test all of the code paths (rather than
+     triggering early normalization optimizations), we use a loop to
+     repeatedly rename a file in the parent directory, use an fd open
+     on subdirectory 1, all while executing in subdirectory 2; all
+     relative names are thus given with a leading "../".  Finally, the
+     last scenario (two relative paths given, neither one AT_FDCWD)
+     has two paths, based on whether the two fds are equivalent, so we
+     do the other variant after the loop.  */
+  for (i = 0; i < 32; i++)
+    {
+      int fd1 = (i & 8) ? dfd : AT_FDCWD;
+      char *file1 = mfile_name_concat ((i & 4) ? ".." : cwd, BASE "xx", NULL);
+      int fd2 = (i & 2) ? dfd : AT_FDCWD;
+      char *file2 = mfile_name_concat ((i & 1) ? ".." : cwd, BASE "xx", NULL);
+      ASSERT (file1);
+      ASSERT (file2);
+      flag = (i & 0x10 ? AT_SYMLINK_FOLLOW : 0);
+
+      ASSERT (sprintf (strchr (file1, '\0') - 2, "%02d", i) == 2);
+      ASSERT (sprintf (strchr (file2, '\0') - 2, "%02d", i + 1) == 2);
+      ASSERT (linkat (fd1, file1, fd2, file2, flag) == 0);
+      ASSERT (unlinkat (fd1, file1, 0) == 0);
+      free (file1);
+      free (file2);
+    }
+  dfd2 = open ("..", O_RDONLY);
+  ASSERT (0 <= dfd2);
+  ASSERT (linkat (dfd, "../" BASE "32", dfd2, BASE "33", 0) == 0);
+  ASSERT (linkat (dfd, "../" BASE "33", dfd2, BASE "34",
+                  AT_SYMLINK_FOLLOW) == 0);
+  ASSERT (close (dfd2) == 0);
+
+  /* Now we change back to the parent directory, and set dfd to ".",
+     in order to test behavior on symlinks.  */
+  ASSERT (chdir ("..") == 0);
+  ASSERT (close (dfd) == 0);
+  if (symlink (BASE "sub1", BASE "link1"))
+    {
+      ASSERT (unlink (BASE "32") == 0);
+      ASSERT (unlink (BASE "33") == 0);
+      ASSERT (unlink (BASE "34") == 0);
+      ASSERT (rmdir (BASE "sub1") == 0);
+      ASSERT (rmdir (BASE "sub2") == 0);
+      free (cwd);
+      if (!result)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return result;
+    }
+  dfd = open (".", O_RDONLY);
+  ASSERT (0 <= dfd);
+  ASSERT (symlink (BASE "34", BASE "link2") == 0);
+  ASSERT (symlink (BASE "link3", BASE "link3") == 0);
+  ASSERT (symlink (BASE "nowhere", BASE "link4") == 0);
+
+  /* Link cannot overwrite existing files.  */
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link1", dfd, BASE "sub1", 0) == -1);
+  ASSERT (errno == EEXIST);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link1/", dfd, BASE "sub1", 0) == -1);
+  ASSERT (errno == EEXIST || errno == EPERM || errno == EACCES);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link1", dfd, BASE "sub1/", 0) == -1);
+  ASSERT (errno == EEXIST || errno == ENOTDIR);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link1", dfd, BASE "sub1",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == EEXIST || errno == EPERM || errno == EACCES);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link1/", dfd, BASE "sub1",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == EEXIST || errno == EPERM || errno == EACCES
+          || errno == EINVAL);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link1", dfd, BASE "sub1/",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == EEXIST || errno == EPERM || errno == EACCES
+          || errno == EINVAL);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link1", dfd, BASE "link2", 0) == -1);
+  ASSERT (errno == EEXIST);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link1", dfd, BASE "link2",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == EEXIST || errno == EPERM || errno == EACCES);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link1", dfd, BASE "link3", 0) == -1);
+  ASSERT (errno == EEXIST || errno == ELOOP);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link1", dfd, BASE "link3",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == EEXIST || errno == EPERM || errno == EACCES
+          || errno == ELOOP);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link2", dfd, BASE "link3", 0) == -1);
+  ASSERT (errno == EEXIST || errno == ELOOP);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link2", dfd, BASE "link3",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == EEXIST || errno == ELOOP);
+
+  /* AT_SYMLINK_FOLLOW only follows first argument, not second.  */
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link1", dfd, BASE "link4", 0) == -1);
+  ASSERT (errno == EEXIST);
+  ASSERT (linkat (dfd, BASE "link1", dfd, BASE "link4",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == EEXIST || errno == EPERM || errno == EACCES);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "34", dfd, BASE "link4", 0) == -1);
+  ASSERT (errno == EEXIST);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "34", dfd, BASE "link4", AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == EEXIST);
+
+  /* Trailing slash handling.  */
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link2/", dfd, BASE "link5", 0) == -1);
+  ASSERT (errno == ENOTDIR);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link2/", dfd, BASE "link5",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == ENOTDIR || errno == EINVAL);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link3/", dfd, BASE "link5", 0) == -1);
+  ASSERT (errno == ELOOP);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link3/", dfd, BASE "link5",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == ELOOP || errno == EINVAL);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link4/", dfd, BASE "link5", 0) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link4/", dfd, BASE "link5",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == ENOENT || errno == EINVAL);
+
+  /* Check for hard links to symlinks.  */
+  ASSERT (linkat (dfd, BASE "link1", dfd, BASE "link5", 0) == 0);
+  check_same_link (BASE "link1", BASE "link5");
+  ASSERT (unlink (BASE "link5") == 0);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link1", dfd, BASE "link5",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == EPERM || errno == EACCES);
+  ASSERT (linkat (dfd, BASE "link2", dfd, BASE "link5", 0) == 0);
+  check_same_link (BASE "link2", BASE "link5");
+  ASSERT (unlink (BASE "link5") == 0);
+  ASSERT (linkat (dfd, BASE "link2", dfd, BASE "file", AT_SYMLINK_FOLLOW) == 0);
+  errno = 0;
+  ASSERT (areadlink (BASE "file") == NULL);
+  ASSERT (errno == EINVAL);
+  ASSERT (unlink (BASE "file") == 0);
+  ASSERT (linkat (dfd, BASE "link3", dfd, BASE "link5", 0) == 0);
+  check_same_link (BASE "link3", BASE "link5");
+  ASSERT (unlink (BASE "link5") == 0);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link3", dfd, BASE "link5",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == ELOOP);
+  ASSERT (linkat (dfd, BASE "link4", dfd, BASE "link5", 0) == 0);
+  check_same_link (BASE "link4", BASE "link5");
+  ASSERT (unlink (BASE "link5") == 0);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link4", dfd, BASE "link5",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == ENOENT);
+
+  /* Check that symlink to symlink to file is followed all the way.  */
+  ASSERT (symlink (BASE "link2", BASE "link5") == 0);
+  ASSERT (linkat (dfd, BASE "link5", dfd, BASE "link6", 0) == 0);
+  check_same_link (BASE "link5", BASE "link6");
+  ASSERT (unlink (BASE "link6") == 0);
+  ASSERT (linkat (dfd, BASE "link5", dfd, BASE "file", AT_SYMLINK_FOLLOW) == 0);
+  errno = 0;
+  ASSERT (areadlink (BASE "file") == NULL);
+  ASSERT (errno == EINVAL);
+  ASSERT (unlink (BASE "file") == 0);
+  ASSERT (unlink (BASE "link5") == 0);
+  ASSERT (symlink (BASE "link3", BASE "link5") == 0);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link5", dfd, BASE "file",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == ELOOP);
+  ASSERT (unlink (BASE "link5") == 0);
+  ASSERT (symlink (BASE "link4", BASE "link5") == 0);
+  errno = 0;
+  ASSERT (linkat (dfd, BASE "link5", dfd, BASE "file",
+                  AT_SYMLINK_FOLLOW) == -1);
+  ASSERT (errno == ENOENT);
+
+  /* Now for some real fun with directory crossing.  */
+  ASSERT (symlink (cwd, BASE "sub1/link") == 0);
+  ASSERT (symlink (".././/" BASE "sub1/link/" BASE "link2",
+                   BASE "sub2/link") == 0);
+  ASSERT (close (dfd) == 0);
+  dfd = open (BASE "sub1", O_RDONLY);
+  ASSERT (0 <= dfd);
+  dfd2 = open (BASE "sub2", O_RDONLY);
+  ASSERT (0 < dfd2);
+  ASSERT (linkat (dfd, "../" BASE "sub2/link", dfd2, "./..//" BASE "sub1/file",
+              AT_SYMLINK_FOLLOW) == 0);
+  errno = 0;
+  ASSERT (areadlink (BASE "sub1/file") == NULL);
+  ASSERT (errno == EINVAL);
+
+  /* Cleanup.  */
+  ASSERT (close (dfd) == 0);
+  ASSERT (close (dfd2) == 0);
+  ASSERT (unlink (BASE "sub1/file") == 0);
+  ASSERT (unlink (BASE "sub1/link") == 0);
+  ASSERT (unlink (BASE "sub2/link") == 0);
+  ASSERT (unlink (BASE "32") == 0);
+  ASSERT (unlink (BASE "33") == 0);
+  ASSERT (unlink (BASE "34") == 0);
+  ASSERT (rmdir (BASE "sub1") == 0);
+  ASSERT (rmdir (BASE "sub2") == 0);
+  ASSERT (unlink (BASE "link1") == 0);
+  ASSERT (unlink (BASE "link2") == 0);
+  ASSERT (unlink (BASE "link3") == 0);
+  ASSERT (unlink (BASE "link4") == 0);
+  ASSERT (unlink (BASE "link5") == 0);
+  free (cwd);
+  return result;
+}
diff --git a/gnulib-tests/test-listen.c b/gnulib-tests/test-listen.c
new file mode 100644
index 0000000..74d31ea
--- /dev/null
+++ b/gnulib-tests/test-listen.c
@@ -0,0 +1,49 @@
+/* Test listen() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/socket.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (listen, int, (int, int));
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "sockets.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  (void) gl_sockets_startup (SOCKETS_1_1);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (listen (-1, 1) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (listen (99 ,1) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-localcharset.c b/gnulib-tests/test-localcharset.c
new file mode 100644
index 0000000..b2dd51c
--- /dev/null
+++ b/gnulib-tests/test-localcharset.c
@@ -0,0 +1,39 @@
+/* Manual test of localcharset() function.
+   Copyright (C) 2018-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This program prints the result of locale_charset in the current locale.
+   One way to use it is:
+     $ for l in `locale -a`; do
+         echo -n "$l               "; LANG=$l ./test-localcharset;
+       done \
+       | sort -k 2
+ */
+
+#include <config.h>
+
+#include "localcharset.h"
+
+#include <locale.h>
+#include <stdio.h>
+
+int
+main (void)
+{
+  setlocale (LC_ALL, "");
+  printf ("%s\n", locale_charset ());
+
+  return 0;
+}
diff --git a/gnulib-tests/test-locale.c b/gnulib-tests/test-locale.c
new file mode 100644
index 0000000..264d7b6
--- /dev/null
+++ b/gnulib-tests/test-locale.c
@@ -0,0 +1,80 @@
+/* Test of <locale.h> substitute.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <locale.h>
+
+#include "verify.h"
+
+int a[] =
+  {
+    LC_ALL,
+    LC_COLLATE,
+    LC_CTYPE,
+    LC_MESSAGES,
+    LC_MONETARY,
+    LC_NUMERIC,
+    LC_TIME
+  };
+
+/* Check that the 'struct lconv' type is defined.  */
+struct lconv l;
+int ls;
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+int
+main ()
+{
+#if HAVE_WORKING_NEWLOCALE
+  /* Check that the locale_t type and the LC_GLOBAL_LOCALE macro are defined.  */
+  locale_t b = LC_GLOBAL_LOCALE;
+  (void) b;
+#endif
+
+  /* Check that 'struct lconv' has the ISO C and POSIX specified members.  */
+  ls += sizeof (*l.decimal_point);
+  ls += sizeof (*l.thousands_sep);
+  ls += sizeof (*l.grouping);
+  ls += sizeof (*l.mon_decimal_point);
+  ls += sizeof (*l.mon_thousands_sep);
+  ls += sizeof (*l.mon_grouping);
+  ls += sizeof (*l.positive_sign);
+  ls += sizeof (*l.negative_sign);
+  ls += sizeof (*l.currency_symbol);
+  ls += sizeof (l.frac_digits);
+  ls += sizeof (l.p_cs_precedes);
+  ls += sizeof (l.p_sign_posn);
+  ls += sizeof (l.p_sep_by_space);
+  ls += sizeof (l.n_cs_precedes);
+  ls += sizeof (l.n_sign_posn);
+  ls += sizeof (l.n_sep_by_space);
+  ls += sizeof (*l.int_curr_symbol);
+  ls += sizeof (l.int_frac_digits);
+  ls += sizeof (l.int_p_cs_precedes);
+  ls += sizeof (l.int_p_sign_posn);
+  ls += sizeof (l.int_p_sep_by_space);
+  ls += sizeof (l.int_n_cs_precedes);
+  ls += sizeof (l.int_n_sign_posn);
+  ls += sizeof (l.int_n_sep_by_space);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-localeconv.c b/gnulib-tests/test-localeconv.c
new file mode 100644
index 0000000..ab54dde
--- /dev/null
+++ b/gnulib-tests/test-localeconv.c
@@ -0,0 +1,72 @@
+/* Test of localeconv() function.
+   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2012.  */
+
+#include <config.h>
+
+#include <locale.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (localeconv, struct lconv *, (void));
+
+#include <limits.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  /* Test localeconv() result in the "C" locale.  */
+  {
+    struct lconv *l = localeconv ();
+
+    ASSERT (STREQ (l->decimal_point, "."));
+    ASSERT (STREQ (l->thousands_sep, ""));
+#if !((defined __FreeBSD__ || defined __DragonFly__) || defined __sun || defined __CYGWIN__)
+    ASSERT (STREQ (l->grouping, ""));
+#endif
+
+    ASSERT (STREQ (l->mon_decimal_point, ""));
+    ASSERT (STREQ (l->mon_thousands_sep, ""));
+#if !((defined __FreeBSD__ || defined __DragonFly__) || defined __sun || defined __CYGWIN__)
+    ASSERT (STREQ (l->mon_grouping, ""));
+#endif
+    ASSERT (STREQ (l->positive_sign, ""));
+    ASSERT (STREQ (l->negative_sign, ""));
+
+    ASSERT (STREQ (l->currency_symbol, ""));
+    ASSERT (l->frac_digits == CHAR_MAX);
+    ASSERT (l->p_cs_precedes == CHAR_MAX);
+    ASSERT (l->p_sign_posn == CHAR_MAX);
+    ASSERT (l->p_sep_by_space == CHAR_MAX);
+    ASSERT (l->n_cs_precedes == CHAR_MAX);
+    ASSERT (l->n_sign_posn == CHAR_MAX);
+    ASSERT (l->n_sep_by_space == CHAR_MAX);
+
+    ASSERT (STREQ (l->int_curr_symbol, ""));
+    ASSERT (l->int_frac_digits == CHAR_MAX);
+    ASSERT (l->int_p_cs_precedes == CHAR_MAX);
+    ASSERT (l->int_p_sign_posn == CHAR_MAX);
+    ASSERT (l->int_p_sep_by_space == CHAR_MAX);
+    ASSERT (l->int_n_cs_precedes == CHAR_MAX);
+    ASSERT (l->int_n_sign_posn == CHAR_MAX);
+    ASSERT (l->int_n_sep_by_space == CHAR_MAX);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-localename.c b/gnulib-tests/test-localename.c
new file mode 100644
index 0000000..6ff10d9
--- /dev/null
+++ b/gnulib-tests/test-localename.c
@@ -0,0 +1,816 @@
+/* Test of gl_locale_name function and its variants.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "localename.h"
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+#if HAVE_WORKING_NEWLOCALE && HAVE_WORKING_USELOCALE && !HAVE_FAKE_LOCALES
+# define HAVE_GOOD_USELOCALE 1
+#endif
+
+
+#if HAVE_GOOD_USELOCALE
+
+static struct { int cat; int mask; const char *string; } const categories[] =
+  {
+      { LC_CTYPE,          LC_CTYPE_MASK,          "LC_CTYPE" },
+      { LC_NUMERIC,        LC_NUMERIC_MASK,        "LC_NUMERIC" },
+      { LC_TIME,           LC_TIME_MASK,           "LC_TIME" },
+      { LC_COLLATE,        LC_COLLATE_MASK,        "LC_COLLATE" },
+      { LC_MONETARY,       LC_MONETARY_MASK,       "LC_MONETARY" },
+      { LC_MESSAGES,       LC_MESSAGES_MASK,       "LC_MESSAGES" }
+# ifdef LC_PAPER
+    , { LC_PAPER,          LC_PAPER_MASK,          "LC_PAPER" }
+# endif
+# ifdef LC_NAME
+    , { LC_NAME,           LC_NAME_MASK,           "LC_NAME" }
+# endif
+# ifdef LC_ADDRESS
+    , { LC_ADDRESS,        LC_ADDRESS_MASK,        "LC_ADDRESS" }
+# endif
+# ifdef LC_TELEPHONE
+    , { LC_TELEPHONE,      LC_TELEPHONE_MASK,      "LC_TELEPHONE" }
+# endif
+# ifdef LC_MEASUREMENT
+    , { LC_MEASUREMENT,    LC_MEASUREMENT_MASK,    "LC_MEASUREMENT" }
+# endif
+# ifdef LC_IDENTIFICATION
+    , { LC_IDENTIFICATION, LC_IDENTIFICATION_MASK, "LC_IDENTIFICATION" }
+# endif
+  };
+
+#endif
+
+/* Test the gl_locale_name() function.  */
+static void
+test_locale_name (void)
+{
+  const char *ret;
+  const char *name;
+
+  /* Check that gl_locale_name returns non-NULL.  */
+  ASSERT (gl_locale_name (LC_MESSAGES, "LC_MESSAGES") != NULL);
+
+  /* Get into a defined state,  */
+  setlocale (LC_ALL, "en_US.UTF-8");
+#if HAVE_GOOD_USELOCALE
+  uselocale (LC_GLOBAL_LOCALE);
+#endif
+
+  /* Check that when all environment variables are unset,
+     gl_locale_name returns the default locale.  */
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LC_NUMERIC");
+  unsetenv ("LANG");
+  /* Need also to unset all environment variables that specify standard or
+     non-standard locale categories.  Otherwise, on glibc systems, when some
+     of these variables are set and reference a nonexistent locale, the
+     setlocale (LC_ALL, "") call below would fail.  */
+  unsetenv ("LC_COLLATE");
+  unsetenv ("LC_MONETARY");
+  unsetenv ("LC_TIME");
+  unsetenv ("LC_ADDRESS");
+  unsetenv ("LC_IDENTIFICATION");
+  unsetenv ("LC_MEASUREMENT");
+  unsetenv ("LC_NAME");
+  unsetenv ("LC_PAPER");
+  unsetenv ("LC_TELEPHONE");
+  ret = setlocale (LC_ALL, "");
+  ASSERT (ret != NULL);
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"),
+                  gl_locale_name_default ()) == 0);
+  ASSERT (strcmp (gl_locale_name (LC_NUMERIC, "LC_NUMERIC"),
+                  gl_locale_name_default ()) == 0);
+
+  /* Check that an empty environment variable is treated like an unset
+     environment variable.  */
+
+  setenv ("LC_ALL", "", 1);
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"),
+                  gl_locale_name_default ()) == 0);
+
+  unsetenv ("LC_ALL");
+  setenv ("LC_CTYPE", "", 1);
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"),
+                  gl_locale_name_default ()) == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "", 1);
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"),
+                  gl_locale_name_default ()) == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  setenv ("LANG", "", 1);
+  setlocale (LC_ALL, "");
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"),
+                  gl_locale_name_default ()) == 0);
+
+  /* Check that LC_ALL overrides the others, and LANG is overridden by the
+     others.  */
+
+  setenv ("LC_ALL", "C", 1);
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"), "C") == 0);
+
+  unsetenv ("LC_ALL");
+  setenv ("LC_CTYPE", "C", 1);
+  setenv ("LC_MESSAGES", "C", 1);
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"), "C") == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  setenv ("LANG", "C", 1);
+  setlocale (LC_ALL, "");
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"), "C") == 0);
+
+  /* Check mixed situations.  */
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "fr_FR.UTF-8", 1);
+  setenv ("LANG", "de_DE.UTF-8", 1);
+  if (setlocale (LC_ALL, "") != NULL)
+    {
+      name = gl_locale_name (LC_CTYPE, "LC_CTYPE");
+#if defined _WIN32 && !defined __CYGWIN__
+      /* On native Windows, here,
+           gl_locale_name_thread (LC_CTYPE, "LC_CTYPE")
+         returns NULL and
+           gl_locale_name_posix (LC_CTYPE, "LC_CTYPE")
+         returns either "de_DE" or "de_DE.UTF-8".  */
+      ASSERT (strcmp (name, "de_DE") == 0 || strcmp (name, "de_DE.UTF-8") == 0);
+#else
+      ASSERT (strcmp (name, "de_DE.UTF-8") == 0);
+#endif
+      name = gl_locale_name (LC_MESSAGES, "LC_MESSAGES");
+      ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+    }
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "fr_FR.UTF-8", 1);
+  unsetenv ("LANG");
+  if (setlocale (LC_ALL, "") != NULL)
+    {
+      name = gl_locale_name (LC_CTYPE, "LC_CTYPE");
+      ASSERT (strcmp (name, gl_locale_name_default ()) == 0);
+      name = gl_locale_name (LC_MESSAGES, "LC_MESSAGES");
+      ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+    }
+
+#if HAVE_GOOD_USELOCALE
+  /* Check that gl_locale_name considers the thread locale.  */
+  {
+    locale_t locale = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", NULL);
+    if (locale != NULL)
+      {
+        uselocale (locale);
+        name = gl_locale_name (LC_CTYPE, "LC_CTYPE");
+        ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+        name = gl_locale_name (LC_MESSAGES, "LC_MESSAGES");
+        ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+        uselocale (LC_GLOBAL_LOCALE);
+        freelocale (locale);
+      }
+  }
+
+  /* Check that gl_locale_name distinguishes different categories of the
+     thread locale, and that the name is the right one for each.  */
+  {
+    unsigned int i;
+
+    for (i = 0; i < SIZEOF (categories); i++)
+      {
+        int category_mask = categories[i].mask;
+        locale_t loc = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", NULL);
+        if (loc != NULL)
+          {
+            locale_t locale = newlocale (category_mask, "de_DE.UTF-8", loc);
+            if (locale == NULL)
+              freelocale (loc);
+            else
+              {
+                unsigned int j;
+
+                uselocale (locale);
+                for (j = 0; j < SIZEOF (categories); j++)
+                  {
+                    const char *name_j =
+                      gl_locale_name (categories[j].cat, categories[j].string);
+                    if (j == i)
+                      ASSERT (strcmp (name_j, "de_DE.UTF-8") == 0);
+                    else
+                      ASSERT (strcmp (name_j, "fr_FR.UTF-8") == 0);
+                  }
+                uselocale (LC_GLOBAL_LOCALE);
+                freelocale (locale);
+              }
+          }
+      }
+  }
+#endif
+}
+
+/* Test the gl_locale_name_thread() function.  */
+static void
+test_locale_name_thread (void)
+{
+  /* Get into a defined state,  */
+  setlocale (LC_ALL, "en_US.UTF-8");
+
+#if HAVE_GOOD_USELOCALE
+  /* Check that gl_locale_name_thread returns NULL when no thread locale is
+     set.  */
+  uselocale (LC_GLOBAL_LOCALE);
+  ASSERT (gl_locale_name_thread (LC_CTYPE, "LC_CTYPE") == NULL);
+  ASSERT (gl_locale_name_thread (LC_MESSAGES, "LC_MESSAGES") == NULL);
+
+  /* Check that gl_locale_name_thread considers the thread locale.  */
+  {
+    locale_t locale = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", NULL);
+    if (locale != NULL)
+      {
+        const char *name;
+
+        uselocale (locale);
+        name = gl_locale_name_thread (LC_CTYPE, "LC_CTYPE");
+        ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+        name = gl_locale_name_thread (LC_MESSAGES, "LC_MESSAGES");
+        ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+        uselocale (LC_GLOBAL_LOCALE);
+        freelocale (locale);
+      }
+  }
+
+  /* Check that gl_locale_name_thread distinguishes different categories of the
+     thread locale, and that the name is the right one for each.  */
+  {
+    unsigned int i;
+
+    for (i = 0; i < SIZEOF (categories); i++)
+      {
+        int category_mask = categories[i].mask;
+        locale_t loc = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", NULL);
+        if (loc != NULL)
+          {
+            locale_t locale = newlocale (category_mask, "de_DE.UTF-8", loc);
+            if (locale == NULL)
+              freelocale (loc);
+            else
+              {
+                unsigned int j;
+
+                uselocale (locale);
+                for (j = 0; j < SIZEOF (categories); j++)
+                  {
+                    const char *name_j =
+                      gl_locale_name_thread (categories[j].cat,
+                                             categories[j].string);
+                    if (j == i)
+                      ASSERT (strcmp (name_j, "de_DE.UTF-8") == 0);
+                    else
+                      ASSERT (strcmp (name_j, "fr_FR.UTF-8") == 0);
+                  }
+                uselocale (LC_GLOBAL_LOCALE);
+                freelocale (locale);
+              }
+          }
+      }
+  }
+
+  /* Check that gl_locale_name_thread returns a string that is allocated with
+     indefinite extent.  */
+  {
+    /* Try many locale names in turn, in order to defeat possible caches.  */
+    static const char * const choices[] =
+      {
+        "C",
+        "POSIX",
+        "af_ZA",
+        "af_ZA.UTF-8",
+        "am_ET",
+        "am_ET.UTF-8",
+        "be_BY",
+        "be_BY.UTF-8",
+        "bg_BG",
+        "bg_BG.UTF-8",
+        "ca_ES",
+        "ca_ES.UTF-8",
+        "cs_CZ",
+        "cs_CZ.UTF-8",
+        "da_DK",
+        "da_DK.UTF-8",
+        "de_AT",
+        "de_AT.UTF-8",
+        "de_CH",
+        "de_CH.UTF-8",
+        "de_DE",
+        "de_DE.UTF-8",
+        "el_GR",
+        "el_GR.UTF-8",
+        "en_AU",
+        "en_AU.UTF-8",
+        "en_CA",
+        "en_CA.UTF-8",
+        "en_GB",
+        "en_GB.UTF-8",
+        "en_IE",
+        "en_IE.UTF-8",
+        "en_NZ",
+        "en_NZ.UTF-8",
+        "en_US",
+        "en_US.UTF-8",
+        "es_ES",
+        "es_ES.UTF-8",
+        "et_EE",
+        "et_EE.UTF-8",
+        "eu_ES",
+        "eu_ES.UTF-8",
+        "fi_FI",
+        "fi_FI.UTF-8",
+        "fr_BE",
+        "fr_BE.UTF-8",
+        "fr_CA",
+        "fr_CA.UTF-8",
+        "fr_CH",
+        "fr_CH.UTF-8",
+        "fr_FR",
+        "fr_FR.UTF-8",
+        "he_IL",
+        "he_IL.UTF-8",
+        "hr_HR",
+        "hr_HR.UTF-8",
+        "hu_HU",
+        "hu_HU.UTF-8",
+        "hy_AM",
+        "is_IS",
+        "is_IS.UTF-8",
+        "it_CH",
+        "it_CH.UTF-8",
+        "it_IT",
+        "it_IT.UTF-8",
+        "ja_JP.UTF-8",
+        "kk_KZ",
+        "kk_KZ.UTF-8",
+        "ko_KR.UTF-8",
+        "lt_LT",
+        "lt_LT.UTF-8",
+        "nl_BE",
+        "nl_BE.UTF-8",
+        "nl_NL",
+        "nl_NL.UTF-8",
+        "no_NO",
+        "no_NO.UTF-8",
+        "pl_PL",
+        "pl_PL.UTF-8",
+        "pt_BR",
+        "pt_BR.UTF-8",
+        "pt_PT",
+        "pt_PT.UTF-8",
+        "ro_RO",
+        "ro_RO.UTF-8",
+        "ru_RU",
+        "ru_RU.UTF-8",
+        "sk_SK",
+        "sk_SK.UTF-8",
+        "sl_SI",
+        "sl_SI.UTF-8",
+        "sv_SE",
+        "sv_SE.UTF-8",
+        "tr_TR",
+        "tr_TR.UTF-8",
+        "uk_UA",
+        "uk_UA.UTF-8",
+        "zh_CN",
+        "zh_CN.UTF-8",
+        "zh_HK",
+        "zh_HK.UTF-8",
+        "zh_TW",
+        "zh_TW.UTF-8"
+      };
+    /* Remember which locales are available.  */
+    unsigned char /* bool */ available[SIZEOF (choices)];
+    /* Array of remembered results of gl_locale_name_thread.  */
+    const char *unsaved_names[SIZEOF (choices)][SIZEOF (categories)];
+    /* Array of remembered results of gl_locale_name_thread, stored in safe
+       memory.  */
+    char *saved_names[SIZEOF (choices)][SIZEOF (categories)];
+    unsigned int j;
+
+    for (j = 0; j < SIZEOF (choices); j++)
+      {
+        locale_t locale = newlocale (LC_ALL_MASK, choices[j], NULL);
+        available[j] = (locale != NULL);
+        if (locale != NULL)
+          {
+            unsigned int i;
+
+            uselocale (locale);
+            for (i = 0; i < SIZEOF (categories); i++)
+              {
+                unsaved_names[j][i] = gl_locale_name_thread (categories[i].cat, categories[i].string);
+                saved_names[j][i] = strdup (unsaved_names[j][i]);
+              }
+            uselocale (LC_GLOBAL_LOCALE);
+            freelocale (locale);
+          }
+      }
+    /* Verify the unsaved_names are still valid.  */
+    for (j = 0; j < SIZEOF (choices); j++)
+      if (available[j])
+        {
+          unsigned int i;
+
+          for (i = 0; i < SIZEOF (categories); i++)
+            ASSERT (strcmp (unsaved_names[j][i], saved_names[j][i]) == 0);
+        }
+    /* Allocate many locales, without freeing them.  This is an attempt at
+       overwriting as much of the previously allocated memory as possible.  */
+    for (j = SIZEOF (choices); j > 0; )
+      {
+        j--;
+        if (available[j])
+          {
+            locale_t locale = newlocale (LC_ALL_MASK, choices[j], NULL);
+            unsigned int i;
+
+            ASSERT (locale != NULL);
+            uselocale (locale);
+            for (i = 0; i < SIZEOF (categories); i++)
+              {
+                const char *name = gl_locale_name_thread (categories[i].cat, categories[i].string);
+                ASSERT (strcmp (unsaved_names[j][i], name) == 0);
+              }
+            uselocale (LC_GLOBAL_LOCALE);
+            freelocale (locale);
+          }
+      }
+    /* Verify the unsaved_names are still valid.  */
+    for (j = 0; j < SIZEOF (choices); j++)
+      if (available[j])
+        {
+          unsigned int i;
+
+          for (i = 0; i < SIZEOF (categories); i++)
+            {
+              ASSERT (strcmp (unsaved_names[j][i], saved_names[j][i]) == 0);
+              free (saved_names[j][i]);
+            }
+        }
+  }
+#else
+  /* Check that gl_locale_name_thread always returns NULL.  */
+  ASSERT (gl_locale_name_thread (LC_CTYPE, "LC_CTYPE") == NULL);
+  ASSERT (gl_locale_name_thread (LC_MESSAGES, "LC_MESSAGES") == NULL);
+#endif
+}
+
+/* Test the gl_locale_name_posix() function.  */
+static void
+test_locale_name_posix (void)
+{
+  const char *ret;
+  const char *name;
+
+  /* Get into a defined state,  */
+  setlocale (LC_ALL, "en_US.UTF-8");
+#if HAVE_GOOD_USELOCALE
+  uselocale (LC_GLOBAL_LOCALE);
+#endif
+
+  /* Check that when all environment variables are unset,
+     gl_locale_name_posix returns either NULL or the default locale.  */
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LC_NUMERIC");
+  unsetenv ("LANG");
+  /* Need also to unset all environment variables that specify standard or
+     non-standard locale categories.  Otherwise, on glibc systems, when some
+     of these variables are set and reference a nonexistent locale, the
+     setlocale (LC_ALL, "") call below would fail.  */
+  unsetenv ("LC_COLLATE");
+  unsetenv ("LC_MONETARY");
+  unsetenv ("LC_TIME");
+  unsetenv ("LC_ADDRESS");
+  unsetenv ("LC_IDENTIFICATION");
+  unsetenv ("LC_MEASUREMENT");
+  unsetenv ("LC_NAME");
+  unsetenv ("LC_PAPER");
+  unsetenv ("LC_TELEPHONE");
+  ret = setlocale (LC_ALL, "");
+  ASSERT (ret != NULL);
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (name == NULL || strcmp (name, gl_locale_name_default ()) == 0);
+  name = gl_locale_name_posix (LC_NUMERIC, "LC_NUMERIC");
+  ASSERT (name == NULL || strcmp (name, gl_locale_name_default ()) == 0);
+
+  /* Check that an empty environment variable is treated like an unset
+     environment variable.  */
+
+  setenv ("LC_ALL", "", 1);
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (name == NULL || strcmp (name, gl_locale_name_default ()) == 0);
+
+  unsetenv ("LC_ALL");
+  setenv ("LC_CTYPE", "", 1);
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (name == NULL || strcmp (name, gl_locale_name_default ()) == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "", 1);
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (name == NULL || strcmp (name, gl_locale_name_default ()) == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  setenv ("LANG", "", 1);
+  setlocale (LC_ALL, "");
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (name == NULL || strcmp (name, gl_locale_name_default ()) == 0);
+
+  /* Check that LC_ALL overrides the others, and LANG is overridden by the
+     others.  */
+
+  setenv ("LC_ALL", "C", 1);
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "C") == 0);
+
+  unsetenv ("LC_ALL");
+  setenv ("LC_CTYPE", "C", 1);
+  setenv ("LC_MESSAGES", "C", 1);
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "C") == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  setenv ("LANG", "C", 1);
+  setlocale (LC_ALL, "");
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "C") == 0);
+
+  /* Check mixed situations.  */
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "fr_FR.UTF-8", 1);
+  setenv ("LANG", "de_DE.UTF-8", 1);
+  if (setlocale (LC_ALL, "") != NULL)
+    {
+      name = gl_locale_name_posix (LC_CTYPE, "LC_CTYPE");
+#if defined _WIN32 && !defined __CYGWIN__
+      ASSERT (strcmp (name, "de_DE") == 0 || strcmp (name, "de_DE.UTF-8") == 0);
+#else
+      ASSERT (strcmp (name, "de_DE.UTF-8") == 0);
+#endif
+      name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+      ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+    }
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "fr_FR.UTF-8", 1);
+  unsetenv ("LANG");
+  if (setlocale (LC_ALL, "") != NULL)
+    {
+      name = gl_locale_name_posix (LC_CTYPE, "LC_CTYPE");
+      ASSERT (name == NULL || strcmp (name, gl_locale_name_default ()) == 0);
+      name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+      ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+    }
+
+#if HAVE_GOOD_USELOCALE
+  /* Check that gl_locale_name_posix ignores the thread locale.  */
+  {
+    locale_t locale = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", NULL);
+    if (locale != NULL)
+      {
+        unsetenv ("LC_ALL");
+        unsetenv ("LC_CTYPE");
+        unsetenv ("LC_MESSAGES");
+        setenv ("LANG", "C", 1);
+        setlocale (LC_ALL, "");
+        uselocale (locale);
+        name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+        ASSERT (strcmp (name, "C") == 0);
+        uselocale (LC_GLOBAL_LOCALE);
+        freelocale (locale);
+      }
+  }
+#endif
+}
+
+/* Test the gl_locale_name_environ() function.  */
+static void
+test_locale_name_environ (void)
+{
+  const char *name;
+
+  /* Get into a defined state,  */
+  setlocale (LC_ALL, "en_US.UTF-8");
+#if HAVE_GOOD_USELOCALE
+  uselocale (LC_GLOBAL_LOCALE);
+#endif
+
+  /* Check that when all environment variables are unset,
+     gl_locale_name_environ returns NULL.  */
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LC_NUMERIC");
+  unsetenv ("LANG");
+  ASSERT (gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES") == NULL);
+  ASSERT (gl_locale_name_environ (LC_NUMERIC, "LC_NUMERIC") == NULL);
+
+  /* Check that an empty environment variable is treated like an unset
+     environment variable.  */
+
+  setenv ("LC_ALL", "", 1);
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  ASSERT (gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES") == NULL);
+
+  unsetenv ("LC_ALL");
+  setenv ("LC_CTYPE", "", 1);
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  ASSERT (gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES") == NULL);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "", 1);
+  unsetenv ("LANG");
+  ASSERT (gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES") == NULL);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  setenv ("LANG", "", 1);
+  ASSERT (gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES") == NULL);
+
+  /* Check that LC_ALL overrides the others, and LANG is overridden by the
+     others.  */
+
+  setenv ("LC_ALL", "C", 1);
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  name = gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "C") == 0);
+
+  unsetenv ("LC_ALL");
+  setenv ("LC_CTYPE", "C", 1);
+  setenv ("LC_MESSAGES", "C", 1);
+  unsetenv ("LANG");
+  name = gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "C") == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  setenv ("LANG", "C", 1);
+  name = gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "C") == 0);
+
+  /* Check mixed situations.  */
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "fr_FR.UTF-8", 1);
+  setenv ("LANG", "de_DE.UTF-8", 1);
+  name = gl_locale_name_environ (LC_CTYPE, "LC_CTYPE");
+  ASSERT (strcmp (name, "de_DE.UTF-8") == 0);
+  name = gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "fr_FR.UTF-8", 1);
+  unsetenv ("LANG");
+  name = gl_locale_name_environ (LC_CTYPE, "LC_CTYPE");
+  ASSERT (name == NULL);
+  name = gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+
+#if HAVE_GOOD_USELOCALE
+  /* Check that gl_locale_name_environ ignores the thread locale.  */
+  {
+    locale_t locale = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", NULL);
+    if (locale != NULL)
+      {
+        unsetenv ("LC_ALL");
+        unsetenv ("LC_CTYPE");
+        unsetenv ("LC_MESSAGES");
+        setenv ("LANG", "C", 1);
+        setlocale (LC_ALL, "");
+        uselocale (locale);
+        name = gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES");
+        ASSERT (strcmp (name, "C") == 0);
+        uselocale (LC_GLOBAL_LOCALE);
+        freelocale (locale);
+      }
+  }
+#endif
+}
+
+/* Test the gl_locale_name_default() function.  */
+static void
+test_locale_name_default (void)
+{
+  const char *name = gl_locale_name_default ();
+
+  ASSERT (name != NULL);
+
+  /* Only Mac OS X and Windows have a facility for the user to set the default
+     locale.  */
+#if !((defined __APPLE__ && defined __MACH__) || (defined _WIN32 || defined __CYGWIN__))
+  ASSERT (strcmp (name, "C") == 0);
+#endif
+
+#if HAVE_GOOD_USELOCALE
+  /* Check that gl_locale_name_default ignores the thread locale.  */
+  {
+    locale_t locale = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", NULL);
+    if (locale != NULL)
+      {
+        uselocale (locale);
+        ASSERT (strcmp (gl_locale_name_default (), name) == 0);
+        uselocale (LC_GLOBAL_LOCALE);
+        freelocale (locale);
+      }
+  }
+#endif
+}
+
+int
+main ()
+{
+  test_locale_name ();
+  test_locale_name_thread ();
+  test_locale_name_posix ();
+  test_locale_name_environ ();
+  test_locale_name_default ();
+
+  return 0;
+}
diff --git a/gnulib-tests/test-lock.c b/gnulib-tests/test-lock.c
new file mode 100644
index 0000000..7325c89
--- /dev/null
+++ b/gnulib-tests/test-lock.c
@@ -0,0 +1,770 @@
+/* Test of locking in multithreaded situations.
+   Copyright (C) 2005, 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.  */
+
+#include <config.h>
+
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+
+#if USE_ISOC_THREADS
+# define TEST_ISOC_THREADS 1
+#endif
+#if USE_POSIX_THREADS
+# define TEST_POSIX_THREADS 1
+#endif
+#if USE_ISOC_AND_POSIX_THREADS
+# define TEST_ISOC_AND_POSIX_THREADS 1
+#endif
+#if USE_WINDOWS_THREADS
+# define TEST_WINDOWS_THREADS 1
+#endif
+
+/* Whether to enable locking.
+   Uncomment this to get a test program without locking, to verify that
+   it crashes.  */
+#define ENABLE_LOCKING 1
+
+/* Which tests to perform.
+   Uncomment some of these, to verify that all tests crash if no locking
+   is enabled.  */
+#define DO_TEST_LOCK 1
+#define DO_TEST_RWLOCK 1
+#define DO_TEST_RECURSIVE_LOCK 1
+#define DO_TEST_ONCE 1
+
+/* Whether to help the scheduler through explicit yield().
+   Uncomment this to see if the operating system has a fair scheduler.  */
+#define EXPLICIT_YIELD 1
+
+/* Whether to use 'volatile' on some variables that communicate information
+   between threads.  If set to 0, a semaphore or a lock is used to protect
+   these variables.  If set to 1, 'volatile' is used; this is theoretically
+   equivalent but can lead to much slower execution (e.g. 30x slower total
+   run time on a 40-core machine), because 'volatile' does not imply any
+   synchronization/communication between different CPUs.  */
+#define USE_VOLATILE 0
+
+#if USE_POSIX_THREADS && HAVE_SEMAPHORE_H
+/* Whether to use a semaphore to communicate information between threads.
+   If set to 0, a lock is used. If set to 1, a semaphore is used.
+   Uncomment this to reduce the dependencies of this test.  */
+# define USE_SEMAPHORE 1
+/* Mac OS X provides only named semaphores (sem_open); its facility for
+   unnamed semaphores (sem_init) does not work.  */
+# if defined __APPLE__ && defined __MACH__
+#  define USE_NAMED_SEMAPHORE 1
+# else
+#  define USE_UNNAMED_SEMAPHORE 1
+# endif
+#endif
+
+/* Whether to print debugging messages.  */
+#define ENABLE_DEBUGGING 0
+
+/* Number of simultaneous threads.  */
+#define THREAD_COUNT 10
+
+/* Number of operations performed in each thread.
+   This is quite high, because with a smaller count, say 5000, we often get
+   an "OK" result even without ENABLE_LOCKING (on Linux/x86).  */
+#define REPEAT_COUNT 50000
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if !ENABLE_LOCKING
+# undef USE_ISOC_THREADS
+# undef USE_POSIX_THREADS
+# undef USE_ISOC_AND_POSIX_THREADS
+# undef USE_WINDOWS_THREADS
+#endif
+#include "glthread/lock.h"
+
+#if !ENABLE_LOCKING
+# if TEST_ISOC_THREADS
+#  define USE_ISOC_THREADS 1
+# endif
+# if TEST_POSIX_THREADS
+#  define USE_POSIX_THREADS 1
+# endif
+# if TEST_ISOC_AND_POSIX_THREADS
+#  define USE_ISOC_AND_POSIX_THREADS 1
+# endif
+# if TEST_WINDOWS_THREADS
+#  define USE_WINDOWS_THREADS 1
+# endif
+#endif
+
+#include "glthread/thread.h"
+#include "glthread/yield.h"
+#if USE_SEMAPHORE
+# include <errno.h>
+# include <fcntl.h>
+# include <semaphore.h>
+# include <unistd.h>
+#endif
+
+#if HAVE_DECL_ALARM
+# include <signal.h>
+# include <unistd.h>
+#endif
+
+#if ENABLE_DEBUGGING
+# define dbgprintf printf
+#else
+# define dbgprintf if (0) printf
+#endif
+
+#if EXPLICIT_YIELD
+# define yield() gl_thread_yield ()
+#else
+# define yield()
+#endif
+
+#if USE_VOLATILE
+struct atomic_int {
+  volatile int value;
+};
+static void
+init_atomic_int (struct atomic_int *ai)
+{
+}
+static int
+get_atomic_int_value (struct atomic_int *ai)
+{
+  return ai->value;
+}
+static void
+set_atomic_int_value (struct atomic_int *ai, int new_value)
+{
+  ai->value = new_value;
+}
+#elif USE_SEMAPHORE
+/* This atomic_int implementation can only support the values 0 and 1.
+   It is initially 0 and can be set to 1 only once.  */
+# if USE_UNNAMED_SEMAPHORE
+struct atomic_int {
+  sem_t semaphore;
+};
+#define atomic_int_semaphore(ai) (&(ai)->semaphore)
+static void
+init_atomic_int (struct atomic_int *ai)
+{
+  sem_init (&ai->semaphore, 0, 0);
+}
+# endif
+# if USE_NAMED_SEMAPHORE
+struct atomic_int {
+  sem_t *semaphore;
+};
+#define atomic_int_semaphore(ai) ((ai)->semaphore)
+static void
+init_atomic_int (struct atomic_int *ai)
+{
+  sem_t *s;
+  unsigned int count;
+  for (count = 0; ; count++)
+    {
+      char name[80];
+      /* Use getpid() in the name, so that different processes running at the
+         same time will not interfere.  Use ai in the name, so that different
+         atomic_int in the same process will not interfere.  Use a count in
+         the name, so that even in the (unlikely) case that a semaphore with
+         the specified name already exists, we can try a different name.  */
+      sprintf (name, "test-lock-%lu-%p-%u",
+               (unsigned long) getpid (), ai, count);
+      s = sem_open (name, O_CREAT | O_EXCL, 0600, 0);
+      if (s == SEM_FAILED)
+        {
+          if (errno == EEXIST)
+            /* Retry with a different name.  */
+            continue;
+          else
+            {
+              perror ("sem_open failed");
+              abort ();
+            }
+        }
+      else
+        {
+          /* Try not to leave a semaphore hanging around on the file system
+             eternally, if we can avoid it.  */
+          sem_unlink (name);
+          break;
+        }
+    }
+  ai->semaphore = s;
+}
+# endif
+static int
+get_atomic_int_value (struct atomic_int *ai)
+{
+  if (sem_trywait (atomic_int_semaphore (ai)) == 0)
+    {
+      if (sem_post (atomic_int_semaphore (ai)))
+        abort ();
+      return 1;
+    }
+  else if (errno == EAGAIN)
+    return 0;
+  else
+    abort ();
+}
+static void
+set_atomic_int_value (struct atomic_int *ai, int new_value)
+{
+  if (new_value == 0)
+    /* It's already initialized with 0.  */
+    return;
+  /* To set the value 1: */
+  if (sem_post (atomic_int_semaphore (ai)))
+    abort ();
+}
+#else
+struct atomic_int {
+  gl_lock_define (, lock)
+  int value;
+};
+static void
+init_atomic_int (struct atomic_int *ai)
+{
+  gl_lock_init (ai->lock);
+}
+static int
+get_atomic_int_value (struct atomic_int *ai)
+{
+  gl_lock_lock (ai->lock);
+  int ret = ai->value;
+  gl_lock_unlock (ai->lock);
+  return ret;
+}
+static void
+set_atomic_int_value (struct atomic_int *ai, int new_value)
+{
+  gl_lock_lock (ai->lock);
+  ai->value = new_value;
+  gl_lock_unlock (ai->lock);
+}
+#endif
+
+#define ACCOUNT_COUNT 4
+
+static int account[ACCOUNT_COUNT];
+
+static int
+random_account (void)
+{
+  return ((unsigned int) rand () >> 3) % ACCOUNT_COUNT;
+}
+
+static void
+check_accounts (void)
+{
+  int i, sum;
+
+  sum = 0;
+  for (i = 0; i < ACCOUNT_COUNT; i++)
+    sum += account[i];
+  if (sum != ACCOUNT_COUNT * 1000)
+    abort ();
+}
+
+
+/* ------------------- Test normal (non-recursive) locks ------------------- */
+
+/* Test normal locks by having several bank accounts and several threads
+   which shuffle around money between the accounts and another thread
+   checking that all the money is still there.  */
+
+gl_lock_define_initialized(static, my_lock)
+
+static void *
+lock_mutator_thread (void *arg)
+{
+  int repeat;
+
+  for (repeat = REPEAT_COUNT; repeat > 0; repeat--)
+    {
+      int i1, i2, value;
+
+      dbgprintf ("Mutator %p before lock\n", gl_thread_self_pointer ());
+      gl_lock_lock (my_lock);
+      dbgprintf ("Mutator %p after  lock\n", gl_thread_self_pointer ());
+
+      i1 = random_account ();
+      i2 = random_account ();
+      value = ((unsigned int) rand () >> 3) % 10;
+      account[i1] += value;
+      account[i2] -= value;
+
+      dbgprintf ("Mutator %p before unlock\n", gl_thread_self_pointer ());
+      gl_lock_unlock (my_lock);
+      dbgprintf ("Mutator %p after  unlock\n", gl_thread_self_pointer ());
+
+      dbgprintf ("Mutator %p before check lock\n", gl_thread_self_pointer ());
+      gl_lock_lock (my_lock);
+      check_accounts ();
+      gl_lock_unlock (my_lock);
+      dbgprintf ("Mutator %p after  check unlock\n", gl_thread_self_pointer ());
+
+      yield ();
+    }
+
+  dbgprintf ("Mutator %p dying.\n", gl_thread_self_pointer ());
+  return NULL;
+}
+
+static struct atomic_int lock_checker_done;
+
+static void *
+lock_checker_thread (void *arg)
+{
+  while (get_atomic_int_value (&lock_checker_done) == 0)
+    {
+      dbgprintf ("Checker %p before check lock\n", gl_thread_self_pointer ());
+      gl_lock_lock (my_lock);
+      check_accounts ();
+      gl_lock_unlock (my_lock);
+      dbgprintf ("Checker %p after  check unlock\n", gl_thread_self_pointer ());
+
+      yield ();
+    }
+
+  dbgprintf ("Checker %p dying.\n", gl_thread_self_pointer ());
+  return NULL;
+}
+
+static void
+test_lock (void)
+{
+  int i;
+  gl_thread_t checkerthread;
+  gl_thread_t threads[THREAD_COUNT];
+
+  /* Initialization.  */
+  for (i = 0; i < ACCOUNT_COUNT; i++)
+    account[i] = 1000;
+  init_atomic_int (&lock_checker_done);
+  set_atomic_int_value (&lock_checker_done, 0);
+
+  /* Spawn the threads.  */
+  checkerthread = gl_thread_create (lock_checker_thread, NULL);
+  for (i = 0; i < THREAD_COUNT; i++)
+    threads[i] = gl_thread_create (lock_mutator_thread, NULL);
+
+  /* Wait for the threads to terminate.  */
+  for (i = 0; i < THREAD_COUNT; i++)
+    gl_thread_join (threads[i], NULL);
+  set_atomic_int_value (&lock_checker_done, 1);
+  gl_thread_join (checkerthread, NULL);
+  check_accounts ();
+}
+
+
+/* ----------------- Test read-write (non-recursive) locks ----------------- */
+
+/* Test read-write locks by having several bank accounts and several threads
+   which shuffle around money between the accounts and several other threads
+   that check that all the money is still there.  */
+
+gl_rwlock_define_initialized(static, my_rwlock)
+
+static void *
+rwlock_mutator_thread (void *arg)
+{
+  int repeat;
+
+  for (repeat = REPEAT_COUNT; repeat > 0; repeat--)
+    {
+      int i1, i2, value;
+
+      dbgprintf ("Mutator %p before wrlock\n", gl_thread_self_pointer ());
+      gl_rwlock_wrlock (my_rwlock);
+      dbgprintf ("Mutator %p after  wrlock\n", gl_thread_self_pointer ());
+
+      i1 = random_account ();
+      i2 = random_account ();
+      value = ((unsigned int) rand () >> 3) % 10;
+      account[i1] += value;
+      account[i2] -= value;
+
+      dbgprintf ("Mutator %p before unlock\n", gl_thread_self_pointer ());
+      gl_rwlock_unlock (my_rwlock);
+      dbgprintf ("Mutator %p after  unlock\n", gl_thread_self_pointer ());
+
+      yield ();
+    }
+
+  dbgprintf ("Mutator %p dying.\n", gl_thread_self_pointer ());
+  return NULL;
+}
+
+static struct atomic_int rwlock_checker_done;
+
+static void *
+rwlock_checker_thread (void *arg)
+{
+  while (get_atomic_int_value (&rwlock_checker_done) == 0)
+    {
+      dbgprintf ("Checker %p before check rdlock\n", gl_thread_self_pointer ());
+      gl_rwlock_rdlock (my_rwlock);
+      check_accounts ();
+      gl_rwlock_unlock (my_rwlock);
+      dbgprintf ("Checker %p after  check unlock\n", gl_thread_self_pointer ());
+
+      yield ();
+    }
+
+  dbgprintf ("Checker %p dying.\n", gl_thread_self_pointer ());
+  return NULL;
+}
+
+static void
+test_rwlock (void)
+{
+  int i;
+  gl_thread_t checkerthreads[THREAD_COUNT];
+  gl_thread_t threads[THREAD_COUNT];
+
+  /* Initialization.  */
+  for (i = 0; i < ACCOUNT_COUNT; i++)
+    account[i] = 1000;
+  init_atomic_int (&rwlock_checker_done);
+  set_atomic_int_value (&rwlock_checker_done, 0);
+
+  /* Spawn the threads.  */
+  for (i = 0; i < THREAD_COUNT; i++)
+    checkerthreads[i] = gl_thread_create (rwlock_checker_thread, NULL);
+  for (i = 0; i < THREAD_COUNT; i++)
+    threads[i] = gl_thread_create (rwlock_mutator_thread, NULL);
+
+  /* Wait for the threads to terminate.  */
+  for (i = 0; i < THREAD_COUNT; i++)
+    gl_thread_join (threads[i], NULL);
+  set_atomic_int_value (&rwlock_checker_done, 1);
+  for (i = 0; i < THREAD_COUNT; i++)
+    gl_thread_join (checkerthreads[i], NULL);
+  check_accounts ();
+}
+
+
+/* -------------------------- Test recursive locks -------------------------- */
+
+/* Test recursive locks by having several bank accounts and several threads
+   which shuffle around money between the accounts (recursively) and another
+   thread checking that all the money is still there.  */
+
+gl_recursive_lock_define_initialized(static, my_reclock)
+
+static void
+recshuffle (void)
+{
+  int i1, i2, value;
+
+  dbgprintf ("Mutator %p before lock\n", gl_thread_self_pointer ());
+  gl_recursive_lock_lock (my_reclock);
+  dbgprintf ("Mutator %p after  lock\n", gl_thread_self_pointer ());
+
+  i1 = random_account ();
+  i2 = random_account ();
+  value = ((unsigned int) rand () >> 3) % 10;
+  account[i1] += value;
+  account[i2] -= value;
+
+  /* Recursive with probability 0.5.  */
+  if (((unsigned int) rand () >> 3) % 2)
+    recshuffle ();
+
+  dbgprintf ("Mutator %p before unlock\n", gl_thread_self_pointer ());
+  gl_recursive_lock_unlock (my_reclock);
+  dbgprintf ("Mutator %p after  unlock\n", gl_thread_self_pointer ());
+}
+
+static void *
+reclock_mutator_thread (void *arg)
+{
+  int repeat;
+
+  for (repeat = REPEAT_COUNT; repeat > 0; repeat--)
+    {
+      recshuffle ();
+
+      dbgprintf ("Mutator %p before check lock\n", gl_thread_self_pointer ());
+      gl_recursive_lock_lock (my_reclock);
+      check_accounts ();
+      gl_recursive_lock_unlock (my_reclock);
+      dbgprintf ("Mutator %p after  check unlock\n", gl_thread_self_pointer ());
+
+      yield ();
+    }
+
+  dbgprintf ("Mutator %p dying.\n", gl_thread_self_pointer ());
+  return NULL;
+}
+
+static struct atomic_int reclock_checker_done;
+
+static void *
+reclock_checker_thread (void *arg)
+{
+  while (get_atomic_int_value (&reclock_checker_done) == 0)
+    {
+      dbgprintf ("Checker %p before check lock\n", gl_thread_self_pointer ());
+      gl_recursive_lock_lock (my_reclock);
+      check_accounts ();
+      gl_recursive_lock_unlock (my_reclock);
+      dbgprintf ("Checker %p after  check unlock\n", gl_thread_self_pointer ());
+
+      yield ();
+    }
+
+  dbgprintf ("Checker %p dying.\n", gl_thread_self_pointer ());
+  return NULL;
+}
+
+static void
+test_recursive_lock (void)
+{
+  int i;
+  gl_thread_t checkerthread;
+  gl_thread_t threads[THREAD_COUNT];
+
+  /* Initialization.  */
+  for (i = 0; i < ACCOUNT_COUNT; i++)
+    account[i] = 1000;
+  init_atomic_int (&reclock_checker_done);
+  set_atomic_int_value (&reclock_checker_done, 0);
+
+  /* Spawn the threads.  */
+  checkerthread = gl_thread_create (reclock_checker_thread, NULL);
+  for (i = 0; i < THREAD_COUNT; i++)
+    threads[i] = gl_thread_create (reclock_mutator_thread, NULL);
+
+  /* Wait for the threads to terminate.  */
+  for (i = 0; i < THREAD_COUNT; i++)
+    gl_thread_join (threads[i], NULL);
+  set_atomic_int_value (&reclock_checker_done, 1);
+  gl_thread_join (checkerthread, NULL);
+  check_accounts ();
+}
+
+
+/* ------------------------ Test once-only execution ------------------------ */
+
+/* Test once-only execution by having several threads attempt to grab a
+   once-only task simultaneously (triggered by releasing a read-write lock).  */
+
+gl_once_define(static, fresh_once)
+static int ready[THREAD_COUNT];
+static gl_lock_t ready_lock[THREAD_COUNT];
+#if ENABLE_LOCKING
+static gl_rwlock_t fire_signal[REPEAT_COUNT];
+#else
+static volatile int fire_signal_state;
+#endif
+static gl_once_t once_control;
+static int performed;
+gl_lock_define_initialized(static, performed_lock)
+
+static void
+once_execute (void)
+{
+  gl_lock_lock (performed_lock);
+  performed++;
+  gl_lock_unlock (performed_lock);
+}
+
+static void *
+once_contender_thread (void *arg)
+{
+  int id = (int) (intptr_t) arg;
+  int repeat;
+
+  for (repeat = 0; repeat <= REPEAT_COUNT; repeat++)
+    {
+      /* Tell the main thread that we're ready.  */
+      gl_lock_lock (ready_lock[id]);
+      ready[id] = 1;
+      gl_lock_unlock (ready_lock[id]);
+
+      if (repeat == REPEAT_COUNT)
+        break;
+
+      dbgprintf ("Contender %p waiting for signal for round %d\n",
+                 gl_thread_self_pointer (), repeat);
+#if ENABLE_LOCKING
+      /* Wait for the signal to go.  */
+      gl_rwlock_rdlock (fire_signal[repeat]);
+      /* And don't hinder the others (if the scheduler is unfair).  */
+      gl_rwlock_unlock (fire_signal[repeat]);
+#else
+      /* Wait for the signal to go.  */
+      while (fire_signal_state <= repeat)
+        yield ();
+#endif
+      dbgprintf ("Contender %p got the     signal for round %d\n",
+                 gl_thread_self_pointer (), repeat);
+
+      /* Contend for execution.  */
+      gl_once (once_control, once_execute);
+    }
+
+  return NULL;
+}
+
+static void
+test_once (void)
+{
+  int i, repeat;
+  gl_thread_t threads[THREAD_COUNT];
+
+  /* Initialize all variables.  */
+  for (i = 0; i < THREAD_COUNT; i++)
+    {
+      ready[i] = 0;
+      gl_lock_init (ready_lock[i]);
+    }
+#if ENABLE_LOCKING
+  for (i = 0; i < REPEAT_COUNT; i++)
+    gl_rwlock_init (fire_signal[i]);
+#else
+  fire_signal_state = 0;
+#endif
+
+#if ENABLE_LOCKING
+  /* Block all fire_signals.  */
+  for (i = REPEAT_COUNT-1; i >= 0; i--)
+    gl_rwlock_wrlock (fire_signal[i]);
+#endif
+
+  /* Spawn the threads.  */
+  for (i = 0; i < THREAD_COUNT; i++)
+    threads[i] =
+      gl_thread_create (once_contender_thread, (void *) (intptr_t) i);
+
+  for (repeat = 0; repeat <= REPEAT_COUNT; repeat++)
+    {
+      /* Wait until every thread is ready.  */
+      dbgprintf ("Main thread before synchronizing for round %d\n", repeat);
+      for (;;)
+        {
+          int ready_count = 0;
+          for (i = 0; i < THREAD_COUNT; i++)
+            {
+              gl_lock_lock (ready_lock[i]);
+              ready_count += ready[i];
+              gl_lock_unlock (ready_lock[i]);
+            }
+          if (ready_count == THREAD_COUNT)
+            break;
+          yield ();
+        }
+      dbgprintf ("Main thread after  synchronizing for round %d\n", repeat);
+
+      if (repeat > 0)
+        {
+          /* Check that exactly one thread executed the once_execute()
+             function.  */
+          if (performed != 1)
+            abort ();
+        }
+
+      if (repeat == REPEAT_COUNT)
+        break;
+
+      /* Preparation for the next round: Initialize once_control.  */
+      memcpy (&once_control, &fresh_once, sizeof (gl_once_t));
+
+      /* Preparation for the next round: Reset the performed counter.  */
+      performed = 0;
+
+      /* Preparation for the next round: Reset the ready flags.  */
+      for (i = 0; i < THREAD_COUNT; i++)
+        {
+          gl_lock_lock (ready_lock[i]);
+          ready[i] = 0;
+          gl_lock_unlock (ready_lock[i]);
+        }
+
+      /* Signal all threads simultaneously.  */
+      dbgprintf ("Main thread giving signal for round %d\n", repeat);
+#if ENABLE_LOCKING
+      gl_rwlock_unlock (fire_signal[repeat]);
+#else
+      fire_signal_state = repeat + 1;
+#endif
+    }
+
+  /* Wait for the threads to terminate.  */
+  for (i = 0; i < THREAD_COUNT; i++)
+    gl_thread_join (threads[i], NULL);
+}
+
+
+/* -------------------------------------------------------------------------- */
+
+int
+main ()
+{
+#if HAVE_DECL_ALARM
+  /* Declare failure if test takes too long, by using default abort
+     caused by SIGALRM.  */
+  int alarm_value = 600;
+  signal (SIGALRM, SIG_DFL);
+  alarm (alarm_value);
+#endif
+
+#if DO_TEST_LOCK
+  printf ("Starting test_lock ..."); fflush (stdout);
+  test_lock ();
+  printf (" OK\n"); fflush (stdout);
+#endif
+#if DO_TEST_RWLOCK
+  printf ("Starting test_rwlock ..."); fflush (stdout);
+  test_rwlock ();
+  printf (" OK\n"); fflush (stdout);
+#endif
+#if DO_TEST_RECURSIVE_LOCK
+  printf ("Starting test_recursive_lock ..."); fflush (stdout);
+  test_recursive_lock ();
+  printf (" OK\n"); fflush (stdout);
+#endif
+#if DO_TEST_ONCE
+  printf ("Starting test_once ..."); fflush (stdout);
+  test_once ();
+  printf (" OK\n"); fflush (stdout);
+#endif
+
+  return 0;
+}
+
+#else
+
+/* No multithreading available.  */
+
+#include <stdio.h>
+
+int
+main ()
+{
+  fputs ("Skipping test: multithreading not enabled\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/gnulib-tests/test-lseek.c b/gnulib-tests/test-lseek.c
new file mode 100644
index 0000000..fd9e60e
--- /dev/null
+++ b/gnulib-tests/test-lseek.c
@@ -0,0 +1,109 @@
+/* Test of lseek() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake, 2007.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (lseek, off_t, (int, off_t, int));
+
+#include <errno.h>
+
+#include "macros.h"
+
+/* ARGC must be 2; *ARGV[1] is '0' if stdin and stdout are files, '1'
+   if they are pipes, and '2' if they are closed.  Check for proper
+   semantics of lseek.  */
+int
+main (int argc, char **argv)
+{
+  if (argc != 2)
+    return 2;
+  switch (*argv[1])
+    {
+    case '0': /* regular files */
+      ASSERT (lseek (0, (off_t)2, SEEK_SET) == 2);
+      ASSERT (lseek (0, (off_t)-4, SEEK_CUR) == -1);
+      ASSERT (errno == EINVAL);
+      errno = 0;
+#if ! defined __BEOS__
+      /* POSIX says that the last lseek call, when failing, does not change
+         the current offset.  But BeOS sets it to 0.  */
+      ASSERT (lseek (0, (off_t)0, SEEK_CUR) == 2);
+#endif
+#if 0 /* leads to SIGSYS on IRIX 6.5 */
+      ASSERT (lseek (0, (off_t)0, (SEEK_SET | SEEK_CUR | SEEK_END) + 1) == -1);
+      ASSERT (errno == EINVAL);
+#endif
+      ASSERT (lseek (1, (off_t)2, SEEK_SET) == 2);
+      errno = 0;
+      ASSERT (lseek (1, (off_t)-4, SEEK_CUR) == -1);
+      ASSERT (errno == EINVAL);
+      errno = 0;
+#if ! defined __BEOS__
+      /* POSIX says that the last lseek call, when failing, does not change
+         the current offset.  But BeOS sets it to 0.  */
+      ASSERT (lseek (1, (off_t)0, SEEK_CUR) == 2);
+#endif
+#if 0 /* leads to SIGSYS on IRIX 6.5 */
+      ASSERT (lseek (1, (off_t)0, (SEEK_SET | SEEK_CUR | SEEK_END) + 1) == -1);
+      ASSERT (errno == EINVAL);
+#endif
+      break;
+
+    case '1': /* pipes */
+      errno = 0;
+      ASSERT (lseek (0, (off_t)0, SEEK_CUR) == -1);
+      ASSERT (errno == ESPIPE);
+      errno = 0;
+      ASSERT (lseek (1, (off_t)0, SEEK_CUR) == -1);
+      ASSERT (errno == ESPIPE);
+      break;
+
+    case '2': /* closed */
+      /* Explicitly close file descriptors 0 and 1.  The <&- and >&- in the
+         invoking shell are not enough on HP-UX.  */
+      close (0);
+      close (1);
+
+      errno = 0;
+      ASSERT (lseek (0, (off_t)0, SEEK_CUR) == -1);
+      ASSERT (errno == EBADF);
+
+      errno = 0;
+      ASSERT (lseek (1, (off_t)0, SEEK_CUR) == -1);
+      ASSERT (errno == EBADF);
+
+      /* Test behaviour for invalid file descriptors.  */
+      errno = 0;
+      ASSERT (lseek (-1, (off_t)0, SEEK_CUR) == -1);
+      ASSERT (errno == EBADF);
+
+      close (99);
+      errno = 0;
+      ASSERT (lseek (99, (off_t)0, SEEK_CUR) == -1);
+      ASSERT (errno == EBADF);
+
+      break;
+
+    default:
+      return 1;
+    }
+  return 0;
+}
diff --git a/gnulib-tests/test-lseek.sh b/gnulib-tests/test-lseek.sh
new file mode 100755
index 0000000..ff206c6
--- /dev/null
+++ b/gnulib-tests/test-lseek.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+tmpfiles=
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles=t-lseek.tmp
+# seekable files
+${CHECKER} ./test-lseek${EXEEXT} 0 < "$srcdir/test-lseek.sh" > t-lseek.tmp || exit 1
+
+# pipes
+echo hi | { ${CHECKER} ./test-lseek${EXEEXT} 1; echo $? > t-lseek.tmp; cat > /dev/null; } | cat
+test "`cat t-lseek.tmp`" = "0" || exit 1
+
+# closed descriptors
+${CHECKER} ./test-lseek${EXEEXT} 2 <&- >&- || exit 1
+
+rm -rf $tmpfiles
+exit 0
diff --git a/gnulib-tests/test-lstat.c b/gnulib-tests/test-lstat.c
new file mode 100644
index 0000000..a7b928a
--- /dev/null
+++ b/gnulib-tests/test-lstat.c
@@ -0,0 +1,60 @@
+/* Test of lstat() function.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson, 2008; and Eric Blake, 2009.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+/* Caution: lstat may be a function-like macro.  Although this
+   signature check must pass, it may be the signature of the real (and
+   broken) lstat rather than rpl_lstat.  Most code should not use the
+   address of lstat.  */
+#include "signature.h"
+SIGNATURE_CHECK (lstat, int, (char const *, struct stat *));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "same-inode.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-lstat.t"
+
+#include "test-lstat.h"
+
+/* Wrapper around lstat, which works even if lstat is a function-like
+   macro, where test_lstat_func(lstat) would do the wrong thing.  */
+static int
+do_lstat (char const *name, struct stat *st)
+{
+  return lstat (name, st);
+}
+
+int
+main (void)
+{
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_lstat_func (do_lstat, true);
+}
diff --git a/gnulib-tests/test-lstat.h b/gnulib-tests/test-lstat.h
new file mode 100644
index 0000000..f9ad11d
--- /dev/null
+++ b/gnulib-tests/test-lstat.h
@@ -0,0 +1,122 @@
+/* Test of lstat() function.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson, 2008; and Eric Blake, 2009.  */
+
+/* This file is designed to test both lstat(n,buf) and
+   fstatat(AT_FDCWD,n,buf,AT_SYMLINK_NOFOLLOW).  FUNC is the function
+   to test.  Assumes that BASE and ASSERT are already defined, and
+   that appropriate headers are already included.  If PRINT, warn
+   before skipping symlink tests with status 77.  */
+
+static int
+test_lstat_func (int (*func) (char const *, struct stat *), bool print)
+{
+  struct stat st1;
+  struct stat st2;
+
+  /* Test for common directories.  */
+  ASSERT (func (".", &st1) == 0);
+  ASSERT (func ("./", &st2) == 0);
+#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
+  ASSERT (SAME_INODE (st1, st2));
+#endif
+  ASSERT (S_ISDIR (st1.st_mode));
+  ASSERT (S_ISDIR (st2.st_mode));
+  ASSERT (func ("/", &st1) == 0);
+  ASSERT (func ("///", &st2) == 0);
+#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
+  ASSERT (SAME_INODE (st1, st2));
+#endif
+  ASSERT (S_ISDIR (st1.st_mode));
+  ASSERT (S_ISDIR (st2.st_mode));
+  ASSERT (func ("..", &st1) == 0);
+  ASSERT (S_ISDIR (st1.st_mode));
+
+  /* Test for error conditions.  */
+  errno = 0;
+  ASSERT (func ("", &st1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("nosuch", &st1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("nosuch/", &st1) == -1);
+  ASSERT (errno == ENOENT);
+
+  ASSERT (close (creat (BASE "file", 0600)) == 0);
+  ASSERT (func (BASE "file", &st1) == 0);
+  ASSERT (S_ISREG (st1.st_mode));
+  errno = 0;
+  ASSERT (func (BASE "file/", &st1) == -1);
+  ASSERT (errno == ENOTDIR);
+
+  /* Now for some symlink tests, where supported.  We set up:
+     link1 -> directory
+     link2 -> file
+     link3 -> dangling
+     link4 -> loop
+     then test behavior both with and without trailing slash.
+  */
+  if (symlink (".", BASE "link1") != 0)
+    {
+      ASSERT (unlink (BASE "file") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  ASSERT (symlink (BASE "file", BASE "link2") == 0);
+  ASSERT (symlink (BASE "nosuch", BASE "link3") == 0);
+  ASSERT (symlink (BASE "link4", BASE "link4") == 0);
+
+  ASSERT (func (BASE "link1", &st1) == 0);
+  ASSERT (S_ISLNK (st1.st_mode));
+  ASSERT (func (BASE "link1/", &st1) == 0);
+  ASSERT (stat (BASE "link1", &st2) == 0);
+  ASSERT (S_ISDIR (st1.st_mode));
+  ASSERT (S_ISDIR (st2.st_mode));
+#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
+  ASSERT (SAME_INODE (st1, st2));
+#endif
+
+  ASSERT (func (BASE "link2", &st1) == 0);
+  ASSERT (S_ISLNK (st1.st_mode));
+  errno = 0;
+  ASSERT (func (BASE "link2/", &st1) == -1);
+  ASSERT (errno == ENOTDIR);
+
+  ASSERT (func (BASE "link3", &st1) == 0);
+  ASSERT (S_ISLNK (st1.st_mode));
+  errno = 0;
+  ASSERT (func (BASE "link3/", &st1) == -1);
+  ASSERT (errno == ENOENT);
+
+  ASSERT (func (BASE "link4", &st1) == 0);
+  ASSERT (S_ISLNK (st1.st_mode));
+  errno = 0;
+  ASSERT (func (BASE "link4/", &st1) == -1);
+  ASSERT (errno == ELOOP);
+
+  /* Cleanup.  */
+  ASSERT (unlink (BASE "file") == 0);
+  ASSERT (unlink (BASE "link1") == 0);
+  ASSERT (unlink (BASE "link2") == 0);
+  ASSERT (unlink (BASE "link3") == 0);
+  ASSERT (unlink (BASE "link4") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-lutimens.h b/gnulib-tests/test-lutimens.h
new file mode 100644
index 0000000..90aa514
--- /dev/null
+++ b/gnulib-tests/test-lutimens.h
@@ -0,0 +1,230 @@
+/* Test of file timestamp modification functions.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "test-utimens-common.h"
+
+/* This file is designed to test both lutimens(a,b) and
+   utimensat(AT_FDCWD,a,b,AT_SYMLINK_NOFOLLOW).  FUNC is the function
+   to test.  Assumes that BASE and ASSERT are already defined.  If
+   PRINT, warn before skipping tests with status 77.  */
+static int
+test_lutimens (int (*func) (char const *, struct timespec const *), bool print)
+{
+  int result;
+  int saved_errno;
+  struct stat st1;
+  struct stat st2;
+  bool atime_supported = true;
+
+  /* Non-symlinks should be handled just like utimens.  */
+  errno = 0;
+  ASSERT (func ("no_such", NULL) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("no_such/", NULL) == -1);
+  ASSERT (errno == ENOENT || errno == ENOTDIR);
+  errno = 0;
+  ASSERT (func ("", NULL) == -1);
+  ASSERT (errno == ENOENT);
+  ASSERT (close (creat (BASE "file", 0600)) == 0);
+  ASSERT (stat (BASE "file", &st1) == 0);
+  ASSERT (st1.st_atime != Y2K);
+  ASSERT (st1.st_mtime != Y2K);
+  {
+    struct timespec ts[2];
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = 0;
+    ts[1] = ts[0];
+    errno = 0;
+    ASSERT (func (BASE "file/", ts) == -1);
+    ASSERT (errno == ENOTDIR);
+    ASSERT (stat (BASE "file", &st2) == 0);
+    ASSERT (st1.st_atime == st2.st_atime);
+    ASSERT (st1.st_mtime == st2.st_mtime);
+  }
+  {
+    struct timespec ts[2];
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = 0;
+    ts[1] = ts[0];
+    nap ();
+    ASSERT (func (BASE "file", ts) == 0);
+  }
+  ASSERT (stat (BASE "file", &st2) == 0);
+  ASSERT (st2.st_atime == Y2K);
+  ASSERT (st2.st_mtime == Y2K);
+  if (check_ctime)
+    ASSERT (ctime_compare (&st1, &st2) < 0);
+
+  /* Play with symlink timestamps.  */
+  if (symlink (BASE "file", BASE "link"))
+    {
+      ASSERT (unlink (BASE "file") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  errno = 0;
+  result = func (BASE "link", NULL);
+  saved_errno = errno;
+  /* Make sure we did not reference through link by accident.  */
+  ASSERT (stat (BASE "file", &st1) == 0);
+  ASSERT (st1.st_atime == Y2K);
+  ASSERT (st1.st_mtime == Y2K);
+  ASSERT (lstat (BASE "link", &st1) == 0);
+  ASSERT (st1.st_atime != Y2K);
+  ASSERT (st1.st_mtime != Y2K);
+  ASSERT (unlink (BASE "file") == 0);
+  if (result == -1 && saved_errno == ENOSYS)
+    {
+      ASSERT (unlink (BASE "link") == 0);
+      if (print)
+        fputs ("skipping test: "
+               "setting symlink time not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  ASSERT (!result);
+  ASSERT (lstat (BASE "link", &st1) == 0);
+  /* On cygwin, lstat() changes atime of symlinks, so that lutimens
+     can only effectively modify mtime.  */
+  nap ();
+  ASSERT (lstat (BASE "link", &st2) == 0);
+  if (st1.st_atime != st2.st_atime
+      || get_stat_atime_ns (&st1) != get_stat_atime_ns (&st2))
+    atime_supported = false;
+  ASSERT (st1.st_ctime == st2.st_ctime);
+  ASSERT (get_stat_ctime_ns (&st1) == get_stat_ctime_ns (&st2));
+
+  /* Invalid arguments.  */
+  {
+    struct timespec ts[2];
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = UTIME_BOGUS_POS;
+    ts[1].tv_sec = Y2K;
+    ts[1].tv_nsec = 0;
+    errno = 0;
+    ASSERT (func (BASE "link", ts) == -1);
+    ASSERT (errno == EINVAL);
+  }
+  {
+    struct timespec ts[2];
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = 0;
+    ts[1].tv_sec = Y2K;
+    ts[1].tv_nsec = UTIME_BOGUS_NEG;
+    errno = 0;
+    ASSERT (func (BASE "link", ts) == -1);
+    ASSERT (errno == EINVAL);
+  }
+  ASSERT (lstat (BASE "link", &st2) == 0);
+  if (atime_supported)
+    {
+      ASSERT (st1.st_atime == st2.st_atime);
+      ASSERT (get_stat_atime_ns (&st1) == get_stat_atime_ns (&st2));
+    }
+  ASSERT (utimecmp (BASE "link", &st1, &st2, 0) == 0);
+
+  /* Set both times.  */
+  {
+    struct timespec ts[2];
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = BILLION / 2 - 1;
+    ts[1].tv_sec = Y2K;
+    ts[1].tv_nsec = BILLION - 1;
+    nap ();
+    ASSERT (func (BASE "link", ts) == 0);
+    ASSERT (lstat (BASE "link", &st2) == 0);
+    if (atime_supported)
+      {
+        ASSERT (st2.st_atime == Y2K);
+        ASSERT (0 <= get_stat_atime_ns (&st2));
+        ASSERT (get_stat_atime_ns (&st2) < BILLION / 2);
+      }
+    ASSERT (st2.st_mtime == Y2K);
+    ASSERT (0 <= get_stat_mtime_ns (&st2));
+    ASSERT (get_stat_mtime_ns (&st2) < BILLION);
+    if (check_ctime)
+      ASSERT (ctime_compare (&st1, &st2) < 0);
+  }
+
+  /* Play with UTIME_OMIT, UTIME_NOW.  */
+  {
+    struct stat st3;
+    struct timespec ts[2];
+    ts[0].tv_sec = BILLION;
+    ts[0].tv_nsec = UTIME_OMIT;
+    ts[1].tv_sec = 0;
+    ts[1].tv_nsec = UTIME_NOW;
+    nap ();
+    ASSERT (func (BASE "link", ts) == 0);
+    ASSERT (lstat (BASE "link", &st3) == 0);
+    if (atime_supported)
+      {
+        ASSERT (st3.st_atime == Y2K);
+        ASSERT (0 <= get_stat_atime_ns (&st3));
+        ASSERT (get_stat_atime_ns (&st3) < BILLION / 2);
+      }
+    ASSERT (utimecmp (BASE "link", &st1, &st3, 0) <= 0);
+    if (check_ctime)
+      ASSERT (ctime_compare (&st2, &st3) < 0);
+    nap ();
+    ts[0].tv_nsec = 0;
+    ts[1].tv_nsec = UTIME_OMIT;
+    ASSERT (func (BASE "link", ts) == 0);
+    ASSERT (lstat (BASE "link", &st2) == 0);
+    if (atime_supported)
+      {
+        ASSERT (st2.st_atime == BILLION);
+        ASSERT (get_stat_atime_ns (&st2) == 0);
+      }
+    ASSERT (st3.st_mtime == st2.st_mtime);
+    ASSERT (get_stat_mtime_ns (&st3) == get_stat_mtime_ns (&st2));
+    if (check_ctime)
+      ASSERT (ctime_compare (&st3, &st2) < 0);
+  }
+
+  /* Symlink to directory.  */
+  ASSERT (unlink (BASE "link") == 0);
+  ASSERT (symlink (BASE "dir", BASE "link") == 0);
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  {
+    struct timespec ts[2];
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = 0;
+    ts[1] = ts[0];
+    ASSERT (func (BASE "link/", ts) == 0);
+  }
+  /* On cygwin 1.5, stat() changes atime of directories, so only check
+     mtime.  */
+  ASSERT (stat (BASE "dir", &st1) == 0);
+  ASSERT (st1.st_mtime == Y2K);
+  ASSERT (lstat (BASE "link", &st1) == 0);
+  ASSERT (st1.st_atime != Y2K);
+  ASSERT (st1.st_mtime != Y2K);
+  ASSERT (func (BASE "link", NULL) == 0);
+  ASSERT (stat (BASE "dir", &st1) == 0);
+  ASSERT (st1.st_mtime == Y2K);
+  ASSERT (lstat (BASE "link", &st1) == 0);
+  ASSERT (st1.st_atime != Y2K);
+  ASSERT (st1.st_mtime != Y2K);
+
+  /* Cleanup.  */
+  ASSERT (rmdir (BASE "dir") == 0);
+  ASSERT (unlink (BASE "link") == 0);
+  return 0;
+}
diff --git a/gnulib-tests/test-malloc-gnu.c b/gnulib-tests/test-malloc-gnu.c
new file mode 100644
index 0000000..a03e42c
--- /dev/null
+++ b/gnulib-tests/test-malloc-gnu.c
@@ -0,0 +1,31 @@
+/* Test of malloc function.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+int
+main ()
+{
+  /* Check that malloc (0) is not a NULL pointer.  */
+  char *p = malloc (0);
+  if (p == NULL)
+    return 1;
+
+  free (p);
+  return 0;
+}
diff --git a/gnulib-tests/test-malloca.c b/gnulib-tests/test-malloca.c
new file mode 100644
index 0000000..a546add
--- /dev/null
+++ b/gnulib-tests/test-malloca.c
@@ -0,0 +1,62 @@
+/* Test of safe automatic memory allocation.
+   Copyright (C) 2005, 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.  */
+
+#include <config.h>
+
+#include "malloca.h"
+
+#include <stdlib.h>
+
+static void
+do_allocation (int n)
+{
+  void *ptr = malloca (n);
+  freea (ptr);
+  safe_alloca (n);
+}
+
+void (*func) (int) = do_allocation;
+
+int
+main ()
+{
+  int i;
+
+  /* This slows down malloc a lot.  */
+  unsetenv ("MALLOC_PERTURB_");
+
+  /* Repeat a lot of times, to make sure there's no memory leak.  */
+  for (i = 0; i < 50000; i++)
+    {
+      /* Try various values.
+         n = 0 gave a crash on Alpha with gcc-2.5.8.
+         Some versions of Mac OS X have a stack size limit of 512 KB.  */
+      func (34);
+      func (134);
+      func (399);
+      func (510823);
+      func (129321);
+      func (0);
+      func (4070);
+      func (4095);
+      func (1);
+      func (16582);
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-math.c b/gnulib-tests/test-math.c
new file mode 100644
index 0000000..656b04d
--- /dev/null
+++ b/gnulib-tests/test-math.c
@@ -0,0 +1,104 @@
+/* Test of <math.h> substitute.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <math.h>
+
+#ifndef NAN
+# error NAN should be defined
+choke me
+#endif
+
+#ifndef HUGE_VALF
+# error HUGE_VALF should be defined
+choke me
+#endif
+
+#ifndef HUGE_VAL
+# error HUGE_VAL should be defined
+choke me
+#endif
+
+#ifndef HUGE_VALL
+# error HUGE_VALL should be defined
+choke me
+#endif
+
+#ifndef FP_ILOGB0
+# error FP_ILOGB0 should be defined
+choke me
+#endif
+
+#ifndef FP_ILOGBNAN
+# error FP_ILOGBNAN should be defined
+choke me
+#endif
+
+#include <limits.h>
+
+#include "macros.h"
+
+#if 0
+/* Check that NAN expands into a constant expression.  */
+static float n = NAN;
+#endif
+
+/* Compare two numbers with ==.
+   This is a separate function because IRIX 6.5 "cc -O" miscompiles an
+   'x == x' test.  */
+static int
+numeric_equalf (float x, float y)
+{
+  return x == y;
+}
+static int
+numeric_equald (double x, double y)
+{
+  return x == y;
+}
+static int
+numeric_equall (long double x, long double y)
+{
+  return x == y;
+}
+
+int
+main (void)
+{
+  double d = NAN;
+  double zero = 0.0;
+  ASSERT (!numeric_equald (d, d));
+
+  d = HUGE_VAL;
+  ASSERT (numeric_equald (d, 1.0 / zero));
+
+  ASSERT (numeric_equalf (HUGE_VALF, HUGE_VALF + HUGE_VALF));
+
+  ASSERT (numeric_equald (HUGE_VAL, HUGE_VAL + HUGE_VAL));
+
+  ASSERT (numeric_equall (HUGE_VALL, HUGE_VALL + HUGE_VALL));
+
+  /* Check the value of FP_ILOGB0.  */
+  ASSERT (FP_ILOGB0 == INT_MIN || FP_ILOGB0 == - INT_MAX);
+
+  /* Check the value of FP_ILOGBNAN.  */
+  ASSERT (FP_ILOGBNAN == INT_MIN || FP_ILOGBNAN == INT_MAX);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-mbrtowc-w32-1.sh b/gnulib-tests/test-mbrtowc-w32-1.sh
new file mode 100755
index 0000000..fec9ead
--- /dev/null
+++ b/gnulib-tests/test-mbrtowc-w32-1.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP1252 locale.
+${CHECKER} ./test-mbrtowc-w32${EXEEXT} French_France 1252
diff --git a/gnulib-tests/test-mbrtowc-w32-2.sh b/gnulib-tests/test-mbrtowc-w32-2.sh
new file mode 100755
index 0000000..c55a0ec
--- /dev/null
+++ b/gnulib-tests/test-mbrtowc-w32-2.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP1256 locale.
+${CHECKER} ./test-mbrtowc-w32${EXEEXT} "Arabic_Saudi Arabia" 1256
diff --git a/gnulib-tests/test-mbrtowc-w32-3.sh b/gnulib-tests/test-mbrtowc-w32-3.sh
new file mode 100755
index 0000000..c49f4bd
--- /dev/null
+++ b/gnulib-tests/test-mbrtowc-w32-3.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP932 locale.
+${CHECKER} ./test-mbrtowc-w32${EXEEXT} Japanese_Japan 932
diff --git a/gnulib-tests/test-mbrtowc-w32-4.sh b/gnulib-tests/test-mbrtowc-w32-4.sh
new file mode 100755
index 0000000..3e78615
--- /dev/null
+++ b/gnulib-tests/test-mbrtowc-w32-4.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP950 locale.
+${CHECKER} ./test-mbrtowc-w32${EXEEXT} Chinese_Taiwan 950
diff --git a/gnulib-tests/test-mbrtowc-w32-5.sh b/gnulib-tests/test-mbrtowc-w32-5.sh
new file mode 100755
index 0000000..c6ba222
--- /dev/null
+++ b/gnulib-tests/test-mbrtowc-w32-5.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP936 locale.
+${CHECKER} ./test-mbrtowc-w32${EXEEXT} Chinese_China 936
diff --git a/gnulib-tests/test-mbrtowc-w32-6.sh b/gnulib-tests/test-mbrtowc-w32-6.sh
new file mode 100755
index 0000000..c2e8dfe
--- /dev/null
+++ b/gnulib-tests/test-mbrtowc-w32-6.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a GB18030 locale.
+${CHECKER} ./test-mbrtowc-w32${EXEEXT} Chinese_China 54936
diff --git a/gnulib-tests/test-mbrtowc-w32-7.sh b/gnulib-tests/test-mbrtowc-w32-7.sh
new file mode 100755
index 0000000..2c5d555
--- /dev/null
+++ b/gnulib-tests/test-mbrtowc-w32-7.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test some UTF-8 locales.
+${CHECKER} ./test-mbrtowc-w32${EXEEXT} French_France Japanese_Japan Chinese_Taiwan Chinese_China 65001
diff --git a/gnulib-tests/test-mbrtowc-w32.c b/gnulib-tests/test-mbrtowc-w32.c
new file mode 100644
index 0000000..17908ed
--- /dev/null
+++ b/gnulib-tests/test-mbrtowc-w32.c
@@ -0,0 +1,734 @@
+/* Test of conversion of multibyte character to wide character.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include <errno.h>
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "localcharset.h"
+#include "macros.h"
+
+#if defined _WIN32 && !defined __CYGWIN__
+
+static int
+test_one_locale (const char *name, int codepage)
+{
+  mbstate_t state;
+  wchar_t wc;
+  size_t ret;
+
+# if 1
+  /* Portable code to set the locale.  */
+  {
+    char name_with_codepage[1024];
+
+    sprintf (name_with_codepage, "%s.%d", name, codepage);
+
+    /* Set the locale.  */
+    if (setlocale (LC_ALL, name_with_codepage) == NULL)
+      return 77;
+  }
+# else
+  /* Hacky way to set a locale.codepage combination that setlocale() refuses
+     to set.  */
+  {
+    /* Codepage of the current locale, set with setlocale().
+       Not necessarily the same as GetACP().  */
+    extern __declspec(dllimport) unsigned int __lc_codepage;
+
+    /* Set the locale.  */
+    if (setlocale (LC_ALL, name) == NULL)
+      return 77;
+
+    /* Clobber the codepage and MB_CUR_MAX, both set by setlocale().  */
+    __lc_codepage = codepage;
+    switch (codepage)
+      {
+      case 1252:
+      case 1256:
+        MB_CUR_MAX = 1;
+        break;
+      case 932:
+      case 950:
+      case 936:
+        MB_CUR_MAX = 2;
+        break;
+      case 54936:
+      case 65001:
+        MB_CUR_MAX = 4;
+        break;
+      }
+
+    /* Test whether the codepage is really available.  */
+    memset (&state, '\0', sizeof (mbstate_t));
+    if (mbrtowc (&wc, " ", 1, &state) == (size_t)(-1))
+      return 77;
+  }
+# endif
+
+  /* Test zero-length input.  */
+  {
+    memset (&state, '\0', sizeof (mbstate_t));
+    wc = (wchar_t) 0xBADFACE;
+    ret = mbrtowc (&wc, "x", 0, &state);
+    /* gnulib's implementation returns (size_t)(-2).
+       The AIX 5.1 implementation returns (size_t)(-1).
+       glibc's implementation returns 0.  */
+    ASSERT (ret == (size_t)(-2) || ret == (size_t)(-1) || ret == 0);
+    ASSERT (mbsinit (&state));
+  }
+
+  /* Test NUL byte input.  */
+  {
+    memset (&state, '\0', sizeof (mbstate_t));
+    wc = (wchar_t) 0xBADFACE;
+    ret = mbrtowc (&wc, "", 1, &state);
+    ASSERT (ret == 0);
+    ASSERT (wc == 0);
+    ASSERT (mbsinit (&state));
+    ret = mbrtowc (NULL, "", 1, &state);
+    ASSERT (ret == 0);
+    ASSERT (mbsinit (&state));
+  }
+
+  /* Test single-byte input.  */
+  {
+    int c;
+    char buf[1];
+
+    memset (&state, '\0', sizeof (mbstate_t));
+    for (c = 0; c < 0x100; c++)
+      switch (c)
+        {
+        case '\t': case '\v': case '\f':
+        case ' ': case '!': case '"': case '#': case '%':
+        case '&': case '\'': case '(': case ')': case '*':
+        case '+': case ',': case '-': case '.': case '/':
+        case '0': case '1': case '2': case '3': case '4':
+        case '5': case '6': case '7': case '8': case '9':
+        case ':': case ';': case '<': case '=': case '>':
+        case '?':
+        case 'A': case 'B': case 'C': case 'D': case 'E':
+        case 'F': case 'G': case 'H': case 'I': case 'J':
+        case 'K': case 'L': case 'M': case 'N': case 'O':
+        case 'P': case 'Q': case 'R': case 'S': case 'T':
+        case 'U': case 'V': case 'W': case 'X': case 'Y':
+        case 'Z':
+        case '[': case '\\': case ']': case '^': case '_':
+        case 'a': case 'b': case 'c': case 'd': case 'e':
+        case 'f': case 'g': case 'h': case 'i': case 'j':
+        case 'k': case 'l': case 'm': case 'n': case 'o':
+        case 'p': case 'q': case 'r': case 's': case 't':
+        case 'u': case 'v': case 'w': case 'x': case 'y':
+        case 'z': case '{': case '|': case '}': case '~':
+          /* c is in the ISO C "basic character set".  */
+          buf[0] = c;
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, buf, 1, &state);
+          ASSERT (ret == 1);
+          ASSERT (wc == c);
+          ASSERT (mbsinit (&state));
+          ret = mbrtowc (NULL, buf, 1, &state);
+          ASSERT (ret == 1);
+          ASSERT (mbsinit (&state));
+          break;
+        }
+  }
+
+  /* Test special calling convention, passing a NULL pointer.  */
+  {
+    memset (&state, '\0', sizeof (mbstate_t));
+    wc = (wchar_t) 0xBADFACE;
+    ret = mbrtowc (&wc, NULL, 5, &state);
+    ASSERT (ret == 0);
+    ASSERT (wc == (wchar_t) 0xBADFACE);
+    ASSERT (mbsinit (&state));
+  }
+
+  switch (codepage)
+    {
+    case 1252:
+      /* Locale encoding is CP1252, an extension of ISO-8859-1.  */
+      {
+        char input[] = "B\374\337er"; /* "Büßer" */
+        memset (&state, '\0', sizeof (mbstate_t));
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == 'B');
+        ASSERT (mbsinit (&state));
+        input[0] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 1, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wctob (wc) == (unsigned char) '\374');
+        ASSERT (wc == 0x00FC);
+        ASSERT (mbsinit (&state));
+        input[1] = '\0';
+
+        /* Test support of NULL first argument.  */
+        ret = mbrtowc (NULL, input + 2, 3, &state);
+        ASSERT (ret == 1);
+        ASSERT (mbsinit (&state));
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 2, 3, &state);
+        ASSERT (ret == 1);
+        ASSERT (wctob (wc) == (unsigned char) '\337');
+        ASSERT (wc == 0x00DF);
+        ASSERT (mbsinit (&state));
+        input[2] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 3, 2, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == 'e');
+        ASSERT (mbsinit (&state));
+        input[3] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 4, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == 'r');
+        ASSERT (mbsinit (&state));
+      }
+      return 0;
+
+    case 1256:
+      /* Locale encoding is CP1256, not the same as ISO-8859-6.  */
+      {
+        char input[] = "x\302\341\346y"; /* "xآلوy" */
+        memset (&state, '\0', sizeof (mbstate_t));
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == 'x');
+        ASSERT (mbsinit (&state));
+        input[0] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 1, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wctob (wc) == (unsigned char) '\302');
+        ASSERT (wc == 0x0622);
+        ASSERT (mbsinit (&state));
+        input[1] = '\0';
+
+        /* Test support of NULL first argument.  */
+        ret = mbrtowc (NULL, input + 2, 3, &state);
+        ASSERT (ret == 1);
+        ASSERT (mbsinit (&state));
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 2, 3, &state);
+        ASSERT (ret == 1);
+        ASSERT (wctob (wc) == (unsigned char) '\341');
+        ASSERT (wc == 0x0644);
+        ASSERT (mbsinit (&state));
+        input[2] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 3, 2, &state);
+        ASSERT (ret == 1);
+        ASSERT (wctob (wc) == (unsigned char) '\346');
+        ASSERT (wc == 0x0648);
+        ASSERT (mbsinit (&state));
+        input[3] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 4, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == 'y');
+        ASSERT (mbsinit (&state));
+      }
+      return 0;
+
+    case 932:
+      /* Locale encoding is CP932, similar to Shift_JIS.  */
+      {
+        char input[] = "<\223\372\226\173\214\352>"; /* "<日本語>" */
+        memset (&state, '\0', sizeof (mbstate_t));
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == '<');
+        ASSERT (mbsinit (&state));
+        input[0] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 1, 2, &state);
+        ASSERT (ret == 2);
+        ASSERT (wctob (wc) == EOF);
+        ASSERT (wc == 0x65E5);
+        ASSERT (mbsinit (&state));
+        input[1] = '\0';
+        input[2] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 3, 1, &state);
+        ASSERT (ret == (size_t)(-2));
+        ASSERT (wc == (wchar_t) 0xBADFACE);
+        ASSERT (!mbsinit (&state));
+        input[3] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 4, 4, &state);
+        ASSERT (ret == 1);
+        ASSERT (wctob (wc) == EOF);
+        ASSERT (wc == 0x672C);
+        ASSERT (mbsinit (&state));
+        input[4] = '\0';
+
+        /* Test support of NULL first argument.  */
+        ret = mbrtowc (NULL, input + 5, 3, &state);
+        ASSERT (ret == 2);
+        ASSERT (mbsinit (&state));
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 5, 3, &state);
+        ASSERT (ret == 2);
+        ASSERT (wctob (wc) == EOF);
+        ASSERT (wc == 0x8A9E);
+        ASSERT (mbsinit (&state));
+        input[5] = '\0';
+        input[6] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 7, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == '>');
+        ASSERT (mbsinit (&state));
+
+        /* Test some invalid input.  */
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\377", 1, &state); /* 0xFF */
+        ASSERT ((ret == (size_t)-1 && errno == EILSEQ) || ret == (size_t)-2);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\225\377", 2, &state); /* 0x95 0xFF */
+        ASSERT ((ret == (size_t)-1 && errno == EILSEQ) || (ret == 2 && wc == 0x30FB));
+      }
+      return 0;
+
+    case 950:
+      /* Locale encoding is CP950, similar to Big5.  */
+      {
+        char input[] = "<\244\351\245\273\273\171>"; /* "<日本語>" */
+        memset (&state, '\0', sizeof (mbstate_t));
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == '<');
+        ASSERT (mbsinit (&state));
+        input[0] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 1, 2, &state);
+        ASSERT (ret == 2);
+        ASSERT (wctob (wc) == EOF);
+        ASSERT (wc == 0x65E5);
+        ASSERT (mbsinit (&state));
+        input[1] = '\0';
+        input[2] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 3, 1, &state);
+        ASSERT (ret == (size_t)(-2));
+        ASSERT (wc == (wchar_t) 0xBADFACE);
+        ASSERT (!mbsinit (&state));
+        input[3] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 4, 4, &state);
+        ASSERT (ret == 1);
+        ASSERT (wctob (wc) == EOF);
+        ASSERT (wc == 0x672C);
+        ASSERT (mbsinit (&state));
+        input[4] = '\0';
+
+        /* Test support of NULL first argument.  */
+        ret = mbrtowc (NULL, input + 5, 3, &state);
+        ASSERT (ret == 2);
+        ASSERT (mbsinit (&state));
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 5, 3, &state);
+        ASSERT (ret == 2);
+        ASSERT (wctob (wc) == EOF);
+        ASSERT (wc == 0x8A9E);
+        ASSERT (mbsinit (&state));
+        input[5] = '\0';
+        input[6] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 7, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == '>');
+        ASSERT (mbsinit (&state));
+
+        /* Test some invalid input.  */
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\377", 1, &state); /* 0xFF */
+        ASSERT ((ret == (size_t)-1 && errno == EILSEQ) || ret == (size_t)-2);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\225\377", 2, &state); /* 0x95 0xFF */
+        ASSERT ((ret == (size_t)-1 && errno == EILSEQ) || (ret == 2 && wc == '?'));
+      }
+      return 0;
+
+    case 936:
+      /* Locale encoding is CP936 = GBK, an extension of GB2312.  */
+      {
+        char input[] = "<\310\325\261\276\325\132>"; /* "<日本語>" */
+        memset (&state, '\0', sizeof (mbstate_t));
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == '<');
+        ASSERT (mbsinit (&state));
+        input[0] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 1, 2, &state);
+        ASSERT (ret == 2);
+        ASSERT (wctob (wc) == EOF);
+        ASSERT (wc == 0x65E5);
+        ASSERT (mbsinit (&state));
+        input[1] = '\0';
+        input[2] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 3, 1, &state);
+        ASSERT (ret == (size_t)(-2));
+        ASSERT (wc == (wchar_t) 0xBADFACE);
+        ASSERT (!mbsinit (&state));
+        input[3] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 4, 4, &state);
+        ASSERT (ret == 1);
+        ASSERT (wctob (wc) == EOF);
+        ASSERT (wc == 0x672C);
+        ASSERT (mbsinit (&state));
+        input[4] = '\0';
+
+        /* Test support of NULL first argument.  */
+        ret = mbrtowc (NULL, input + 5, 3, &state);
+        ASSERT (ret == 2);
+        ASSERT (mbsinit (&state));
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 5, 3, &state);
+        ASSERT (ret == 2);
+        ASSERT (wctob (wc) == EOF);
+        ASSERT (wc == 0x8A9E);
+        ASSERT (mbsinit (&state));
+        input[5] = '\0';
+        input[6] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 7, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == '>');
+        ASSERT (mbsinit (&state));
+
+        /* Test some invalid input.  */
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\377", 1, &state); /* 0xFF */
+        ASSERT ((ret == (size_t)-1 && errno == EILSEQ) || ret == (size_t)-2);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\225\377", 2, &state); /* 0x95 0xFF */
+        ASSERT ((ret == (size_t)-1 && errno == EILSEQ) || (ret == 2 && wc == '?'));
+      }
+      return 0;
+
+    case 54936:
+      /* Locale encoding is CP54936 = GB18030.  */
+      if (strcmp (locale_charset (), "GB18030") != 0)
+        return 77;
+      {
+        char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
+        memset (&state, '\0', sizeof (mbstate_t));
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == 'B');
+        ASSERT (mbsinit (&state));
+        input[0] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 1, 1, &state);
+        ASSERT (ret == (size_t)(-2));
+        ASSERT (wc == (wchar_t) 0xBADFACE);
+        ASSERT (!mbsinit (&state));
+        input[1] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 2, 7, &state);
+        ASSERT (ret == 1);
+        ASSERT (wctob (wc) == EOF);
+        ASSERT (wc == 0x00FC);
+        ASSERT (mbsinit (&state));
+        input[2] = '\0';
+
+        /* Test support of NULL first argument.  */
+        ret = mbrtowc (NULL, input + 3, 6, &state);
+        ASSERT (ret == 4);
+        ASSERT (mbsinit (&state));
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 3, 6, &state);
+        ASSERT (ret == 4);
+        ASSERT (wctob (wc) == EOF);
+        ASSERT (wc == 0x00DF);
+        ASSERT (mbsinit (&state));
+        input[3] = '\0';
+        input[4] = '\0';
+        input[5] = '\0';
+        input[6] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 7, 2, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == 'e');
+        ASSERT (mbsinit (&state));
+        input[7] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 8, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == 'r');
+        ASSERT (mbsinit (&state));
+
+        /* Test some invalid input.  */
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\377", 1, &state); /* 0xFF */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\225\377", 2, &state); /* 0x95 0xFF */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\201\045", 2, &state); /* 0x81 0x25 */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\201\060\377", 3, &state); /* 0x81 0x30 0xFF */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\201\060\377\064", 4, &state); /* 0x81 0x30 0xFF 0x34 */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\201\060\211\072", 4, &state); /* 0x81 0x30 0x89 0x3A */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+      }
+      return 0;
+
+    case 65001:
+      /* Locale encoding is CP65001 = UTF-8.  */
+      if (strcmp (locale_charset (), "UTF-8") != 0)
+        return 77;
+      {
+        char input[] = "B\303\274\303\237er"; /* "Büßer" */
+        memset (&state, '\0', sizeof (mbstate_t));
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == 'B');
+        ASSERT (mbsinit (&state));
+        input[0] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 1, 1, &state);
+        ASSERT (ret == (size_t)(-2));
+        ASSERT (wc == (wchar_t) 0xBADFACE);
+        ASSERT (!mbsinit (&state));
+        input[1] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 2, 5, &state);
+        ASSERT (ret == 1);
+        ASSERT (wctob (wc) == EOF);
+        ASSERT (wc == 0x00FC);
+        ASSERT (mbsinit (&state));
+        input[2] = '\0';
+
+        /* Test support of NULL first argument.  */
+        ret = mbrtowc (NULL, input + 3, 4, &state);
+        ASSERT (ret == 2);
+        ASSERT (mbsinit (&state));
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 3, 4, &state);
+        ASSERT (ret == 2);
+        ASSERT (wctob (wc) == EOF);
+        ASSERT (wc == 0x00DF);
+        ASSERT (mbsinit (&state));
+        input[3] = '\0';
+        input[4] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 5, 2, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == 'e');
+        ASSERT (mbsinit (&state));
+        input[5] = '\0';
+
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, input + 6, 1, &state);
+        ASSERT (ret == 1);
+        ASSERT (wc == 'r');
+        ASSERT (mbsinit (&state));
+
+        /* Test some invalid input.  */
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\377", 1, &state); /* 0xFF */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\303\300", 2, &state); /* 0xC3 0xC0 */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\343\300", 2, &state); /* 0xE3 0xC0 */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\343\300\200", 3, &state); /* 0xE3 0xC0 0x80 */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\343\200\300", 3, &state); /* 0xE3 0x80 0xC0 */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\363\300", 2, &state); /* 0xF3 0xC0 */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\363\300\200\200", 4, &state); /* 0xF3 0xC0 0x80 0x80 */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\363\200\300", 3, &state); /* 0xF3 0x80 0xC0 */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\363\200\300\200", 4, &state); /* 0xF3 0x80 0xC0 0x80 */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+
+        memset (&state, '\0', sizeof (mbstate_t));
+        wc = (wchar_t) 0xBADFACE;
+        ret = mbrtowc (&wc, "\363\200\200\300", 4, &state); /* 0xF3 0x80 0x80 0xC0 */
+        ASSERT (ret == (size_t)-1);
+        ASSERT (errno == EILSEQ);
+      }
+      return 0;
+
+    default:
+      return 1;
+    }
+}
+
+int
+main (int argc, char *argv[])
+{
+  int codepage = atoi (argv[argc - 1]);
+  int result;
+  int i;
+
+  result = 77;
+  for (i = 1; i < argc - 1; i++)
+    {
+      int ret = test_one_locale (argv[i], codepage);
+
+      if (ret != 77)
+        result = ret;
+    }
+
+  if (result == 77)
+    {
+      fprintf (stderr, "Skipping test: found no locale with codepage %d\n",
+               codepage);
+    }
+  return result;
+}
+
+#else
+
+int
+main (int argc, char *argv[])
+{
+  fputs ("Skipping test: not a native Windows system\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/gnulib-tests/test-mbrtowc.c b/gnulib-tests/test-mbrtowc.c
new file mode 100644
index 0000000..09fbda7
--- /dev/null
+++ b/gnulib-tests/test-mbrtowc.c
@@ -0,0 +1,357 @@
+/* Test of conversion of multibyte character to wide character.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (mbrtowc, size_t, (wchar_t *, char const *, size_t,
+                                   mbstate_t *));
+
+#include <locale.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  mbstate_t state;
+  wchar_t wc;
+  size_t ret;
+
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  /* Test zero-length input.  */
+  {
+    memset (&state, '\0', sizeof (mbstate_t));
+    wc = (wchar_t) 0xBADFACE;
+    ret = mbrtowc (&wc, "x", 0, &state);
+    ASSERT (ret == (size_t)(-2));
+    ASSERT (mbsinit (&state));
+  }
+
+  /* Test NUL byte input.  */
+  {
+    memset (&state, '\0', sizeof (mbstate_t));
+    wc = (wchar_t) 0xBADFACE;
+    ret = mbrtowc (&wc, "", 1, &state);
+    ASSERT (ret == 0);
+    ASSERT (wc == 0);
+    ASSERT (mbsinit (&state));
+    ret = mbrtowc (NULL, "", 1, &state);
+    ASSERT (ret == 0);
+    ASSERT (mbsinit (&state));
+  }
+
+  /* Test single-byte input.  */
+  {
+    int c;
+    char buf[1];
+
+    memset (&state, '\0', sizeof (mbstate_t));
+    for (c = 0; c < 0x100; c++)
+      switch (c)
+        {
+        default:
+          if (! (c && 1 < argc && argv[1][0] == '5'))
+            break;
+          FALLTHROUGH;
+        case '\t': case '\v': case '\f':
+        case ' ': case '!': case '"': case '#': case '%':
+        case '&': case '\'': case '(': case ')': case '*':
+        case '+': case ',': case '-': case '.': case '/':
+        case '0': case '1': case '2': case '3': case '4':
+        case '5': case '6': case '7': case '8': case '9':
+        case ':': case ';': case '<': case '=': case '>':
+        case '?':
+        case 'A': case 'B': case 'C': case 'D': case 'E':
+        case 'F': case 'G': case 'H': case 'I': case 'J':
+        case 'K': case 'L': case 'M': case 'N': case 'O':
+        case 'P': case 'Q': case 'R': case 'S': case 'T':
+        case 'U': case 'V': case 'W': case 'X': case 'Y':
+        case 'Z':
+        case '[': case '\\': case ']': case '^': case '_':
+        case 'a': case 'b': case 'c': case 'd': case 'e':
+        case 'f': case 'g': case 'h': case 'i': case 'j':
+        case 'k': case 'l': case 'm': case 'n': case 'o':
+        case 'p': case 'q': case 'r': case 's': case 't':
+        case 'u': case 'v': case 'w': case 'x': case 'y':
+        case 'z': case '{': case '|': case '}': case '~':
+          /* c is in the ISO C "basic character set", or argv[1] starts
+             with '5' so we are testing all nonnull bytes.  */
+          buf[0] = c;
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, buf, 1, &state);
+          ASSERT (ret == 1);
+          if (c < 0x80)
+            /* c is an ASCII character.  */
+            ASSERT (wc == c);
+          else
+            /* argv[1] starts with '5', that is, we are testing the C or POSIX
+               locale.
+               On most platforms, the bytes 0x80..0xFF map to U+0080..U+00FF.
+               But on musl libc, the bytes 0x80..0xFF map to U+DF80..U+DFFF.  */
+            ASSERT (wc == (btowc (c) == 0xDF00 + c ? btowc (c) : c));
+          ASSERT (mbsinit (&state));
+          ret = mbrtowc (NULL, buf, 1, &state);
+          ASSERT (ret == 1);
+          ASSERT (mbsinit (&state));
+          break;
+        }
+  }
+
+  /* Test special calling convention, passing a NULL pointer.  */
+  {
+    memset (&state, '\0', sizeof (mbstate_t));
+    wc = (wchar_t) 0xBADFACE;
+    ret = mbrtowc (&wc, NULL, 5, &state);
+    ASSERT (ret == 0);
+    ASSERT (wc == (wchar_t) 0xBADFACE);
+    ASSERT (mbsinit (&state));
+  }
+
+  if (argc > 1)
+    switch (argv[1][0])
+      {
+      case '1':
+        /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
+        {
+          char input[] = "B\374\337er"; /* "Büßer" */
+          memset (&state, '\0', sizeof (mbstate_t));
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input, 1, &state);
+          ASSERT (ret == 1);
+          ASSERT (wc == 'B');
+          ASSERT (mbsinit (&state));
+          input[0] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 1, 1, &state);
+          ASSERT (ret == 1);
+          ASSERT (wctob (wc) == (unsigned char) '\374');
+          ASSERT (mbsinit (&state));
+          input[1] = '\0';
+
+          /* Test support of NULL first argument.  */
+          ret = mbrtowc (NULL, input + 2, 3, &state);
+          ASSERT (ret == 1);
+          ASSERT (mbsinit (&state));
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 2, 3, &state);
+          ASSERT (ret == 1);
+          ASSERT (wctob (wc) == (unsigned char) '\337');
+          ASSERT (mbsinit (&state));
+          input[2] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 3, 2, &state);
+          ASSERT (ret == 1);
+          ASSERT (wc == 'e');
+          ASSERT (mbsinit (&state));
+          input[3] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 4, 1, &state);
+          ASSERT (ret == 1);
+          ASSERT (wc == 'r');
+          ASSERT (mbsinit (&state));
+        }
+        return 0;
+
+      case '2':
+        /* Locale encoding is UTF-8.  */
+        {
+          char input[] = "B\303\274\303\237er"; /* "Büßer" */
+          memset (&state, '\0', sizeof (mbstate_t));
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input, 1, &state);
+          ASSERT (ret == 1);
+          ASSERT (wc == 'B');
+          ASSERT (mbsinit (&state));
+          input[0] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 1, 1, &state);
+          ASSERT (ret == (size_t)(-2));
+          ASSERT (wc == (wchar_t) 0xBADFACE);
+          ASSERT (!mbsinit (&state));
+          input[1] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 2, 5, &state);
+          ASSERT (ret == 1);
+          ASSERT (wctob (wc) == EOF);
+          ASSERT (mbsinit (&state));
+          input[2] = '\0';
+
+          /* Test support of NULL first argument.  */
+          ret = mbrtowc (NULL, input + 3, 4, &state);
+          ASSERT (ret == 2);
+          ASSERT (mbsinit (&state));
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 3, 4, &state);
+          ASSERT (ret == 2);
+          ASSERT (wctob (wc) == EOF);
+          ASSERT (mbsinit (&state));
+          input[3] = '\0';
+          input[4] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 5, 2, &state);
+          ASSERT (ret == 1);
+          ASSERT (wc == 'e');
+          ASSERT (mbsinit (&state));
+          input[5] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 6, 1, &state);
+          ASSERT (ret == 1);
+          ASSERT (wc == 'r');
+          ASSERT (mbsinit (&state));
+        }
+        return 0;
+
+      case '3':
+        /* Locale encoding is EUC-JP.  */
+        {
+          char input[] = "<\306\374\313\334\270\354>"; /* "<日本語>" */
+          memset (&state, '\0', sizeof (mbstate_t));
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input, 1, &state);
+          ASSERT (ret == 1);
+          ASSERT (wc == '<');
+          ASSERT (mbsinit (&state));
+          input[0] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 1, 2, &state);
+          ASSERT (ret == 2);
+          ASSERT (wctob (wc) == EOF);
+          ASSERT (mbsinit (&state));
+          input[1] = '\0';
+          input[2] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 3, 1, &state);
+          ASSERT (ret == (size_t)(-2));
+          ASSERT (wc == (wchar_t) 0xBADFACE);
+          ASSERT (!mbsinit (&state));
+          input[3] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 4, 4, &state);
+          ASSERT (ret == 1);
+          ASSERT (wctob (wc) == EOF);
+          ASSERT (mbsinit (&state));
+          input[4] = '\0';
+
+          /* Test support of NULL first argument.  */
+          ret = mbrtowc (NULL, input + 5, 3, &state);
+          ASSERT (ret == 2);
+          ASSERT (mbsinit (&state));
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 5, 3, &state);
+          ASSERT (ret == 2);
+          ASSERT (wctob (wc) == EOF);
+          ASSERT (mbsinit (&state));
+          input[5] = '\0';
+          input[6] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 7, 1, &state);
+          ASSERT (ret == 1);
+          ASSERT (wc == '>');
+          ASSERT (mbsinit (&state));
+        }
+        return 0;
+
+      case '4':
+        /* Locale encoding is GB18030.  */
+        {
+          char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
+          memset (&state, '\0', sizeof (mbstate_t));
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input, 1, &state);
+          ASSERT (ret == 1);
+          ASSERT (wc == 'B');
+          ASSERT (mbsinit (&state));
+          input[0] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 1, 1, &state);
+          ASSERT (ret == (size_t)(-2));
+          ASSERT (wc == (wchar_t) 0xBADFACE);
+          ASSERT (!mbsinit (&state));
+          input[1] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 2, 7, &state);
+          ASSERT (ret == 1);
+          ASSERT (wctob (wc) == EOF);
+          ASSERT (mbsinit (&state));
+          input[2] = '\0';
+
+          /* Test support of NULL first argument.  */
+          ret = mbrtowc (NULL, input + 3, 6, &state);
+          ASSERT (ret == 4);
+          ASSERT (mbsinit (&state));
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 3, 6, &state);
+          ASSERT (ret == 4);
+          ASSERT (wctob (wc) == EOF);
+          ASSERT (mbsinit (&state));
+          input[3] = '\0';
+          input[4] = '\0';
+          input[5] = '\0';
+          input[6] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 7, 2, &state);
+          ASSERT (ret == 1);
+          ASSERT (wc == 'e');
+          ASSERT (mbsinit (&state));
+          input[7] = '\0';
+
+          wc = (wchar_t) 0xBADFACE;
+          ret = mbrtowc (&wc, input + 8, 1, &state);
+          ASSERT (ret == 1);
+          ASSERT (wc == 'r');
+          ASSERT (mbsinit (&state));
+        }
+        return 0;
+
+      case '5':
+        /* C locale; tested above.  */
+        return 0;
+      }
+
+  return 1;
+}
diff --git a/gnulib-tests/test-mbrtowc1.sh b/gnulib-tests/test-mbrtowc1.sh
new file mode 100755
index 0000000..00b108b
--- /dev/null
+++ b/gnulib-tests/test-mbrtowc1.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test in an ISO-8859-1 or ISO-8859-15 locale.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no traditional french locale is installed"
+  else
+    echo "Skipping test: no traditional french locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_FR \
+${CHECKER} ./test-mbrtowc${EXEEXT} 1
diff --git a/gnulib-tests/test-mbrtowc2.sh b/gnulib-tests/test-mbrtowc2.sh
new file mode 100755
index 0000000..5036930
--- /dev/null
+++ b/gnulib-tests/test-mbrtowc2.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no french Unicode locale is installed"
+  else
+    echo "Skipping test: no french Unicode locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_FR_UTF8 \
+${CHECKER} ./test-mbrtowc${EXEEXT} 2
diff --git a/gnulib-tests/test-mbrtowc3.sh b/gnulib-tests/test-mbrtowc3.sh
new file mode 100755
index 0000000..2773fa7
--- /dev/null
+++ b/gnulib-tests/test-mbrtowc3.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific EUC-JP locale is installed.
+: ${LOCALE_JA=ja_JP}
+if test $LOCALE_JA = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no traditional japanese locale is installed"
+  else
+    echo "Skipping test: no traditional japanese locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_JA \
+${CHECKER} ./test-mbrtowc${EXEEXT} 3
diff --git a/gnulib-tests/test-mbrtowc4.sh b/gnulib-tests/test-mbrtowc4.sh
new file mode 100755
index 0000000..92f641c
--- /dev/null
+++ b/gnulib-tests/test-mbrtowc4.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific GB18030 locale is installed.
+: ${LOCALE_ZH_CN=zh_CN.GB18030}
+if test $LOCALE_ZH_CN = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no transitional chinese locale is installed"
+  else
+    echo "Skipping test: no transitional chinese locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_ZH_CN \
+${CHECKER} ./test-mbrtowc${EXEEXT} 4
diff --git a/gnulib-tests/test-mbrtowc5.sh b/gnulib-tests/test-mbrtowc5.sh
new file mode 100755
index 0000000..490496d
--- /dev/null
+++ b/gnulib-tests/test-mbrtowc5.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+# Test whether the POSIX locale has encoding errors.
+LC_ALL=C \
+${CHECKER} ./test-mbrtowc${EXEEXT} 5 || exit
+LC_ALL=POSIX \
+${CHECKER} ./test-mbrtowc${EXEEXT} 5
diff --git a/gnulib-tests/test-mbsalign.c b/gnulib-tests/test-mbsalign.c
new file mode 100644
index 0000000..1595dca
--- /dev/null
+++ b/gnulib-tests/test-mbsalign.c
@@ -0,0 +1,138 @@
+/* Test that mbsalign works as advertised.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Pádraig Brady.  */
+
+#include <config.h>
+
+#include "mbsalign.h"
+#include "macros.h"
+#include <stdlib.h>
+#include <locale.h>
+
+int
+main (void)
+{
+  char dest[4 * 16 + 1];
+  size_t width, n;
+
+  /* Test unibyte truncation.  */
+  width = 4;
+  n = mbsalign ("t\tés", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
+  ASSERT (n == 4);
+
+  /* Test center alignment.  */
+  width = 4;
+  n = mbsalign ("es", dest, sizeof dest, &width, MBS_ALIGN_CENTER, 0);
+  ASSERT (*dest == ' ' && *(dest + n - 1) == ' ');
+  ASSERT (n == 4);
+
+  /* Test center alignment, with no trailing padding.  */
+  width = 4;
+  n = mbsalign ("es", dest, sizeof dest, &width, MBS_ALIGN_CENTER,
+                MBA_NO_RIGHT_PAD);
+  ASSERT (n == 3);
+  ASSERT (*dest == ' ' && *(dest + n - 1) == 's');
+
+  /* Test left alignment, with no trailing padding. (truncate only).  */
+  width = 4;
+  n = mbsalign ("es", dest, sizeof dest, &width, MBS_ALIGN_LEFT,
+                MBA_NO_RIGHT_PAD);
+  ASSERT (n == 2);
+  ASSERT (*dest == 'e' && *(dest + n - 1) == 's');
+
+  /* Test center alignment, with no padding. (truncate only).  */
+  width = 4;
+  n = mbsalign ("es", dest, sizeof dest, &width, MBS_ALIGN_CENTER,
+                MBA_NO_LEFT_PAD | MBA_NO_RIGHT_PAD);
+  ASSERT (n == 2);
+  ASSERT (*dest == 'e' && *(dest + n - 1) == 's');
+
+  /* Test center alignment, with no left padding. (may be useful for RTL?)  */
+  width = 4;
+  n = mbsalign ("es", dest, sizeof dest, &width, MBS_ALIGN_CENTER,
+                MBA_NO_LEFT_PAD);
+  ASSERT (n == 3);
+  ASSERT (*dest == 'e' && *(dest + n - 1) == ' ');
+
+  if (setlocale (LC_ALL, "en_US.UTF8"))
+    {
+      /* Check invalid input is flagged.  */
+      width = 4;
+      n = mbsalign ("t\xe1\xe2s", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
+      ASSERT (n == (size_t) -1);
+
+      /* Check invalid input is treated as unibyte  */
+      width = 4;
+      n = mbsalign ("t\xe1\xe2s", dest, sizeof dest, &width,
+                    MBS_ALIGN_LEFT, MBA_UNIBYTE_FALLBACK);
+      ASSERT (n == 4);
+
+      /* Test multibyte center alignment.  */
+      width = 4;
+      n = mbsalign ("és", dest, sizeof dest, &width, MBS_ALIGN_CENTER, 0);
+      ASSERT (n == 5);
+      ASSERT (*dest == ' ' && *(dest + n - 1) == ' ');
+
+      /* Test multibyte left alignment.  */
+      width = 4;
+      n = mbsalign ("és", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
+      ASSERT (n == 5);
+      ASSERT (*(dest + n - 1) == ' ' && *(dest + n - 2) == ' ');
+
+      /* Test multibyte right alignment.  */
+      width = 4;
+      n = mbsalign ("és", dest, sizeof dest, &width, MBS_ALIGN_RIGHT, 0);
+      ASSERT (n == 5);
+      ASSERT (*(dest) == ' ' && *(dest + 1) == ' ');
+
+      /* multibyte multicell truncation.  */
+      width = 4;                /* cells */
+      n = mbsalign ("日月火水", dest, sizeof dest, &width,
+                    MBS_ALIGN_LEFT, 0);
+      ASSERT (n == 6);          /* 2 characters */
+
+      /* multibyte unicell truncation.  */
+      width = 3;                /* cells */
+      n = mbsalign ("¹²³⁴", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
+      ASSERT (n == 6);          /* 3 characters */
+
+      /* Check independence from dest buffer. */
+      width = 4;                /* cells */
+      n = mbsalign ("¹²³⁴", dest, 0, &width, MBS_ALIGN_LEFT, 0);
+      ASSERT (n == 9);          /* 4 characters */
+
+      /* Check that width is updated with cells required before padding.  */
+      width = 4;                /* cells */
+      n = mbsalign ("¹²³", dest, 0, &width, MBS_ALIGN_LEFT, 0);
+      ASSERT (width == 3);
+
+      /* Test case where output is larger than input
+         (as tab converted to multi byte replacement char).  */
+      width = 4;
+      n = mbsalign ("t\tés" /* 6 including NUL */ , dest, sizeof dest,
+                    &width, MBS_ALIGN_LEFT, 0);
+      ASSERT (n == 7);
+
+      /* Test forced unibyte truncation.  */
+      width = 4;
+      n = mbsalign ("t\tés", dest, sizeof dest, &width, MBS_ALIGN_LEFT,
+                    MBA_UNIBYTE_ONLY);
+      ASSERT (n == 4);
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-mbscasecmp.c b/gnulib-tests/test-mbscasecmp.c
new file mode 100644
index 0000000..8a49a21
--- /dev/null
+++ b/gnulib-tests/test-mbscasecmp.c
@@ -0,0 +1,55 @@
+/* Test of case-insensitive string comparison function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include <locale.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  ASSERT (mbscasecmp ("paragraph", "Paragraph") == 0);
+
+  ASSERT (mbscasecmp ("paragrapH", "parAgRaph") == 0);
+
+  ASSERT (mbscasecmp ("paragraph", "paraLyzed") < 0);
+  ASSERT (mbscasecmp ("paraLyzed", "paragraph") > 0);
+
+  ASSERT (mbscasecmp ("para", "paragraph") < 0);
+  ASSERT (mbscasecmp ("paragraph", "para") > 0);
+
+  /* The following tests shows how mbscasecmp() is different from
+     strcasecmp().  */
+
+  ASSERT (mbscasecmp ("\303\266zg\303\274r", "\303\226ZG\303\234R") == 0); /* özgür */
+  ASSERT (mbscasecmp ("\303\226ZG\303\234R", "\303\266zg\303\274r") == 0); /* özgür */
+
+  /* This test shows how strings of different size can compare equal.  */
+  ASSERT (mbscasecmp ("turkish", "TURK\304\260SH") == 0);
+  ASSERT (mbscasecmp ("TURK\304\260SH", "turkish") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-mbscasecmp.sh b/gnulib-tests/test-mbscasecmp.sh
new file mode 100755
index 0000000..5201951
--- /dev/null
+++ b/gnulib-tests/test-mbscasecmp.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific Turkish locale is installed.
+: ${LOCALE_TR_UTF8=tr_TR.UTF-8}
+if test $LOCALE_TR_UTF8 = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no turkish Unicode locale is installed"
+  else
+    echo "Skipping test: no turkish Unicode locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_TR_UTF8 \
+${CHECKER} ./test-mbscasecmp${EXEEXT}
diff --git a/gnulib-tests/test-mbschr.c b/gnulib-tests/test-mbschr.c
new file mode 100644
index 0000000..86d26ae
--- /dev/null
+++ b/gnulib-tests/test-mbschr.c
@@ -0,0 +1,68 @@
+/* Test of searching a string for a character.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include <locale.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  /* Tests with a character < 0x30.  */
+  {
+    const char input[] = "\312\276\300\375 \312\276\300\375 \312\276\300\375"; /* "示例 示例 示例" */
+    const char *result = mbschr (input, ' ');
+    ASSERT (result == input + 4);
+  }
+
+  {
+    const char input[] = "\312\276\300\375"; /* "示例" */
+    const char *result = mbschr (input, ' ');
+    ASSERT (result == NULL);
+  }
+
+  /* Tests with a character >= 0x30.  */
+  {
+    const char input[] = "\272\305123\324\313\320\320\241\243"; /* "号123运行。" */
+    const char *result = mbschr (input, '2');
+    ASSERT (result == input + 3);
+  }
+
+  /* This test shows how mbschr() is different from strchr().  */
+  {
+    const char input[] = "\203\062\332\066123\324\313\320\320\241\243"; /* "씋123运行。" */
+    const char *result = mbschr (input, '2');
+    ASSERT (result == input + 5);
+  }
+
+  {
+    const char input[] = "\312\300\275\347\304\343\272\303\243\241"; /* "世界你好！" */
+    const char *result = mbschr (input, '!');
+    ASSERT (result == NULL);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-mbschr.sh b/gnulib-tests/test-mbschr.sh
new file mode 100755
index 0000000..7b04fe3
--- /dev/null
+++ b/gnulib-tests/test-mbschr.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific GB18030 locale is installed.
+: ${LOCALE_ZH_CN=zh_CN.GB18030}
+if test $LOCALE_ZH_CN = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no chinese GB18030 locale is installed"
+  else
+    echo "Skipping test: no chinese GB18030 locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_ZH_CN \
+${CHECKER} ./test-mbschr${EXEEXT}
diff --git a/gnulib-tests/test-mbsinit.c b/gnulib-tests/test-mbsinit.c
new file mode 100644
index 0000000..44beca3
--- /dev/null
+++ b/gnulib-tests/test-mbsinit.c
@@ -0,0 +1,55 @@
+/* Test of test for initial conversion state.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (mbsinit, int, (const mbstate_t *));
+
+#include <locale.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  static mbstate_t state;
+
+  ASSERT (mbsinit (NULL));
+
+  ASSERT (mbsinit (&state));
+
+  if (argc > 1)
+    {
+      static const char input[1] = "\303";
+      wchar_t wc;
+      size_t ret;
+
+      /* configure should already have checked that the locale is supported.  */
+      if (setlocale (LC_ALL, "") == NULL)
+        return 1;
+
+      ret = mbrtowc (&wc, input, 1, &state);
+      ASSERT (ret == (size_t)(-2));
+      ASSERT (!mbsinit (&state));
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-mbsinit.sh b/gnulib-tests/test-mbsinit.sh
new file mode 100755
index 0000000..7308714
--- /dev/null
+++ b/gnulib-tests/test-mbsinit.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no french Unicode locale is installed"
+  else
+    echo "Skipping test: no french Unicode locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_FR_UTF8 \
+${CHECKER} ./test-mbsinit${EXEEXT}
diff --git a/gnulib-tests/test-mbsrtowcs.c b/gnulib-tests/test-mbsrtowcs.c
new file mode 100644
index 0000000..8afabe6
--- /dev/null
+++ b/gnulib-tests/test-mbsrtowcs.c
@@ -0,0 +1,293 @@
+/* Test of conversion of string to wide string.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (mbsrtowcs, size_t, (wchar_t *, char const **, size_t,
+                                     mbstate_t *));
+
+#include <locale.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  mbstate_t state;
+  wchar_t wc;
+  size_t ret;
+
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  /* Test NUL byte input.  */
+  {
+    const char *src;
+
+    memset (&state, '\0', sizeof (mbstate_t));
+
+    src = "";
+    ret = mbsrtowcs (NULL, &src, 0, &state);
+    ASSERT (ret == 0);
+    ASSERT (mbsinit (&state));
+
+    src = "";
+    ret = mbsrtowcs (NULL, &src, 1, &state);
+    ASSERT (ret == 0);
+    ASSERT (mbsinit (&state));
+
+    wc = (wchar_t) 0xBADFACE;
+    src = "";
+    ret = mbsrtowcs (&wc, &src, 0, &state);
+    ASSERT (ret == 0);
+    ASSERT (wc == (wchar_t) 0xBADFACE);
+    ASSERT (mbsinit (&state));
+
+    wc = (wchar_t) 0xBADFACE;
+    src = "";
+    ret = mbsrtowcs (&wc, &src, 1, &state);
+    ASSERT (ret == 0);
+    ASSERT (wc == 0);
+    ASSERT (mbsinit (&state));
+  }
+
+  if (argc > 1)
+    {
+      int unlimited;
+
+      for (unlimited = 0; unlimited < 2; unlimited++)
+        {
+          #define BUFSIZE 10
+          wchar_t buf[BUFSIZE];
+          const char *src;
+          mbstate_t temp_state;
+
+          {
+            size_t i;
+            for (i = 0; i < BUFSIZE; i++)
+              buf[i] = (wchar_t) 0xBADFACE;
+          }
+
+          switch (argv[1][0])
+            {
+            case '1':
+              /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
+              {
+                char input[] = "B\374\337er"; /* "Büßer" */
+                memset (&state, '\0', sizeof (mbstate_t));
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input, 1, &state);
+                ASSERT (ret == 1);
+                ASSERT (wc == 'B');
+                ASSERT (mbsinit (&state));
+                input[0] = '\0';
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input + 1, 1, &state);
+                ASSERT (ret == 1);
+                ASSERT (wctob (wc) == (unsigned char) '\374');
+                ASSERT (mbsinit (&state));
+                input[1] = '\0';
+
+                src = input + 2;
+                temp_state = state;
+                ret = mbsrtowcs (NULL, &src, unlimited ? BUFSIZE : 1, &temp_state);
+                ASSERT (ret == 3);
+                ASSERT (src == input + 2);
+                ASSERT (mbsinit (&state));
+
+                src = input + 2;
+                ret = mbsrtowcs (buf, &src, unlimited ? BUFSIZE : 1, &state);
+                ASSERT (ret == (unlimited ? 3 : 1));
+                ASSERT (src == (unlimited ? NULL : input + 3));
+                ASSERT (wctob (buf[0]) == (unsigned char) '\337');
+                if (unlimited)
+                  {
+                    ASSERT (buf[1] == 'e');
+                    ASSERT (buf[2] == 'r');
+                    ASSERT (buf[3] == 0);
+                    ASSERT (buf[4] == (wchar_t) 0xBADFACE);
+                  }
+                else
+                  ASSERT (buf[1] == (wchar_t) 0xBADFACE);
+                ASSERT (mbsinit (&state));
+              }
+              break;
+
+            case '2':
+              /* Locale encoding is UTF-8.  */
+              {
+                char input[] = "B\303\274\303\237er"; /* "Büßer" */
+                memset (&state, '\0', sizeof (mbstate_t));
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input, 1, &state);
+                ASSERT (ret == 1);
+                ASSERT (wc == 'B');
+                ASSERT (mbsinit (&state));
+                input[0] = '\0';
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input + 1, 1, &state);
+                ASSERT (ret == (size_t)(-2));
+                ASSERT (wc == (wchar_t) 0xBADFACE);
+                ASSERT (!mbsinit (&state));
+                input[1] = '\0';
+
+                src = input + 2;
+                temp_state = state;
+                ret = mbsrtowcs (NULL, &src, unlimited ? BUFSIZE : 2, &temp_state);
+                ASSERT (ret == 4);
+                ASSERT (src == input + 2);
+                ASSERT (!mbsinit (&state));
+
+                src = input + 2;
+                ret = mbsrtowcs (buf, &src, unlimited ? BUFSIZE : 2, &state);
+                ASSERT (ret == (unlimited ? 4 : 2));
+                ASSERT (src == (unlimited ? NULL : input + 5));
+                ASSERT (wctob (buf[0]) == EOF);
+                ASSERT (wctob (buf[1]) == EOF);
+                if (unlimited)
+                  {
+                    ASSERT (buf[2] == 'e');
+                    ASSERT (buf[3] == 'r');
+                    ASSERT (buf[4] == 0);
+                    ASSERT (buf[5] == (wchar_t) 0xBADFACE);
+                  }
+                else
+                  ASSERT (buf[2] == (wchar_t) 0xBADFACE);
+                ASSERT (mbsinit (&state));
+              }
+              break;
+
+            case '3':
+              /* Locale encoding is EUC-JP.  */
+              {
+                char input[] = "<\306\374\313\334\270\354>"; /* "<日本語>" */
+                memset (&state, '\0', sizeof (mbstate_t));
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input, 1, &state);
+                ASSERT (ret == 1);
+                ASSERT (wc == '<');
+                ASSERT (mbsinit (&state));
+                input[0] = '\0';
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input + 1, 2, &state);
+                ASSERT (ret == 2);
+                ASSERT (wctob (wc) == EOF);
+                ASSERT (mbsinit (&state));
+                input[1] = '\0';
+                input[2] = '\0';
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input + 3, 1, &state);
+                ASSERT (ret == (size_t)(-2));
+                ASSERT (wc == (wchar_t) 0xBADFACE);
+                ASSERT (!mbsinit (&state));
+                input[3] = '\0';
+
+                src = input + 4;
+                temp_state = state;
+                ret = mbsrtowcs (NULL, &src, unlimited ? BUFSIZE : 2, &temp_state);
+                ASSERT (ret == 3);
+                ASSERT (src == input + 4);
+                ASSERT (!mbsinit (&state));
+
+                src = input + 4;
+                ret = mbsrtowcs (buf, &src, unlimited ? BUFSIZE : 2, &state);
+                ASSERT (ret == (unlimited ? 3 : 2));
+                ASSERT (src == (unlimited ? NULL : input + 7));
+                ASSERT (wctob (buf[0]) == EOF);
+                ASSERT (wctob (buf[1]) == EOF);
+                if (unlimited)
+                  {
+                    ASSERT (buf[2] == '>');
+                    ASSERT (buf[3] == 0);
+                    ASSERT (buf[4] == (wchar_t) 0xBADFACE);
+                  }
+                else
+                  ASSERT (buf[2] == (wchar_t) 0xBADFACE);
+                ASSERT (mbsinit (&state));
+              }
+              break;
+
+            case '4':
+              /* Locale encoding is GB18030.  */
+              {
+                char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
+                memset (&state, '\0', sizeof (mbstate_t));
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input, 1, &state);
+                ASSERT (ret == 1);
+                ASSERT (wc == 'B');
+                ASSERT (mbsinit (&state));
+                input[0] = '\0';
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input + 1, 1, &state);
+                ASSERT (ret == (size_t)(-2));
+                ASSERT (wc == (wchar_t) 0xBADFACE);
+                ASSERT (!mbsinit (&state));
+                input[1] = '\0';
+
+                src = input + 2;
+                temp_state = state;
+                ret = mbsrtowcs (NULL, &src, unlimited ? BUFSIZE : 2, &temp_state);
+                ASSERT (ret == 4);
+                ASSERT (src == input + 2);
+                ASSERT (!mbsinit (&state));
+
+                src = input + 2;
+                ret = mbsrtowcs (buf, &src, unlimited ? BUFSIZE : 2, &state);
+                ASSERT (ret == (unlimited ? 4 : 2));
+                ASSERT (src == (unlimited ? NULL : input + 7));
+                ASSERT (wctob (buf[0]) == EOF);
+                ASSERT (wctob (buf[1]) == EOF);
+                if (unlimited)
+                  {
+                    ASSERT (buf[2] == 'e');
+                    ASSERT (buf[3] == 'r');
+                    ASSERT (buf[4] == 0);
+                    ASSERT (buf[5] == (wchar_t) 0xBADFACE);
+                  }
+                else
+                  ASSERT (buf[2] == (wchar_t) 0xBADFACE);
+                ASSERT (mbsinit (&state));
+              }
+              break;
+
+            default:
+              return 1;
+            }
+        }
+
+      return 0;
+    }
+
+  return 1;
+}
diff --git a/gnulib-tests/test-mbsrtowcs1.sh b/gnulib-tests/test-mbsrtowcs1.sh
new file mode 100755
index 0000000..66ba231
--- /dev/null
+++ b/gnulib-tests/test-mbsrtowcs1.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test in an ISO-8859-1 or ISO-8859-15 locale.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no traditional french locale is installed"
+  else
+    echo "Skipping test: no traditional french locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_FR \
+${CHECKER} ./test-mbsrtowcs${EXEEXT} 1
diff --git a/gnulib-tests/test-mbsrtowcs2.sh b/gnulib-tests/test-mbsrtowcs2.sh
new file mode 100755
index 0000000..6786efd
--- /dev/null
+++ b/gnulib-tests/test-mbsrtowcs2.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no french Unicode locale is installed"
+  else
+    echo "Skipping test: no french Unicode locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_FR_UTF8 \
+${CHECKER} ./test-mbsrtowcs${EXEEXT} 2
diff --git a/gnulib-tests/test-mbsrtowcs3.sh b/gnulib-tests/test-mbsrtowcs3.sh
new file mode 100755
index 0000000..54e9832
--- /dev/null
+++ b/gnulib-tests/test-mbsrtowcs3.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific EUC-JP locale is installed.
+: ${LOCALE_JA=ja_JP}
+if test $LOCALE_JA = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no traditional japanese locale is installed"
+  else
+    echo "Skipping test: no traditional japanese locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_JA \
+${CHECKER} ./test-mbsrtowcs${EXEEXT} 3
diff --git a/gnulib-tests/test-mbsrtowcs4.sh b/gnulib-tests/test-mbsrtowcs4.sh
new file mode 100755
index 0000000..8acda08
--- /dev/null
+++ b/gnulib-tests/test-mbsrtowcs4.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific GB18030 locale is installed.
+: ${LOCALE_ZH_CN=zh_CN.GB18030}
+if test $LOCALE_ZH_CN = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no transitional chinese locale is installed"
+  else
+    echo "Skipping test: no transitional chinese locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_ZH_CN \
+${CHECKER} ./test-mbsrtowcs${EXEEXT} 4
diff --git a/gnulib-tests/test-mbsstr1.c b/gnulib-tests/test-mbsstr1.c
new file mode 100644
index 0000000..91b8048
--- /dev/null
+++ b/gnulib-tests/test-mbsstr1.c
@@ -0,0 +1,128 @@
+/* Test of searching in a string.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include <stdlib.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  /* This test is executed in the C locale.  */
+
+  {
+    const char input[] = "foo";
+    const char *result = mbsstr (input, "");
+    ASSERT (result == input);
+  }
+
+  {
+    const char input[] = "foo";
+    const char *result = mbsstr (input, "o");
+    ASSERT (result == input + 1);
+  }
+
+  {
+    const char input[] = "ABC ABCDAB ABCDABCDABDE";
+    const char *result = mbsstr (input, "ABCDABD");
+    ASSERT (result == input + 15);
+  }
+
+  {
+    const char input[] = "ABC ABCDAB ABCDABCDABDE";
+    const char *result = mbsstr (input, "ABCDABE");
+    ASSERT (result == NULL);
+  }
+
+  /* Check that a very long haystack is handled quickly if the needle is
+     short and occurs near the beginning.  */
+  {
+    size_t repeat = 10000;
+    size_t m = 1000000;
+    const char *needle =
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
+    char *haystack = (char *) malloc (m + 1);
+    if (haystack != NULL)
+      {
+        memset (haystack, 'A', m);
+        haystack[0] = 'B';
+        haystack[m] = '\0';
+
+        for (; repeat > 0; repeat--)
+          {
+            ASSERT (mbsstr (haystack, needle) == haystack + 1);
+          }
+
+        free (haystack);
+      }
+  }
+
+  /* Check that a very long needle is discarded quickly if the haystack is
+     short.  */
+  {
+    size_t repeat = 10000;
+    size_t m = 1000000;
+    const char *haystack =
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+      "ABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAB";
+    char *needle = (char *) malloc (m + 1);
+    if (needle != NULL)
+      {
+        memset (needle, 'A', m);
+        needle[m] = '\0';
+
+        for (; repeat > 0; repeat--)
+          {
+            ASSERT (mbsstr (haystack, needle) == NULL);
+          }
+
+        free (needle);
+      }
+  }
+
+  /* Check that the asymptotic worst-case complexity is not quadratic.  */
+  {
+    size_t m = 1000000;
+    char *haystack = (char *) malloc (2 * m + 2);
+    char *needle = (char *) malloc (m + 2);
+    if (haystack != NULL && needle != NULL)
+      {
+        const char *result;
+
+        memset (haystack, 'A', 2 * m);
+        haystack[2 * m] = 'B';
+        haystack[2 * m + 1] = '\0';
+
+        memset (needle, 'A', m);
+        needle[m] = 'B';
+        needle[m + 1] = '\0';
+
+        result = mbsstr (haystack, needle);
+        ASSERT (result == haystack + m);
+      }
+    free (needle);
+    free (haystack);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-mbsstr2.c b/gnulib-tests/test-mbsstr2.c
new file mode 100644
index 0000000..c891bf4
--- /dev/null
+++ b/gnulib-tests/test-mbsstr2.c
@@ -0,0 +1,141 @@
+/* Test of searching in a string.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include <locale.h>
+#include <stdlib.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  {
+    const char input[] = "f\303\266\303\266";
+    const char *result = mbsstr (input, "");
+    ASSERT (result == input);
+  }
+
+  {
+    const char input[] = "f\303\266\303\266";
+    const char *result = mbsstr (input, "\303\266");
+    ASSERT (result == input + 1);
+  }
+
+  {
+    const char input[] = "f\303\266\303\266";
+    const char *result = mbsstr (input, "\266\303");
+    ASSERT (result == NULL);
+  }
+
+  {
+    const char input[] = "\303\204BC \303\204BCD\303\204B \303\204BCD\303\204BCD\303\204BDE"; /* "ÄBC ÄBCDÄB ÄBCDÄBCDÄBDE" */
+    const char *result = mbsstr (input, "\303\204BCD\303\204BD"); /* "ÄBCDÄBD" */
+    ASSERT (result == input + 19);
+  }
+
+  {
+    const char input[] = "\303\204BC \303\204BCD\303\204B \303\204BCD\303\204BCD\303\204BDE"; /* "ÄBC ÄBCDÄB ÄBCDÄBCDÄBDE" */
+    const char *result = mbsstr (input, "\303\204BCD\303\204BE"); /* "ÄBCDÄBE" */
+    ASSERT (result == NULL);
+  }
+
+  /* Check that a very long haystack is handled quickly if the needle is
+     short and occurs near the beginning.  */
+  {
+    size_t repeat = 10000;
+    size_t m = 1000000;
+    const char *needle =
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
+    char *haystack = (char *) malloc (m + 1);
+    if (haystack != NULL)
+      {
+        memset (haystack, 'A', m);
+        haystack[0] = '\303'; haystack[1] = '\204';
+        haystack[m] = '\0';
+
+        for (; repeat > 0; repeat--)
+          {
+            ASSERT (mbsstr (haystack, needle) == haystack + 2);
+          }
+
+        free (haystack);
+      }
+  }
+
+  /* Check that a very long needle is discarded quickly if the haystack is
+     short.  */
+  {
+    size_t repeat = 10000;
+    size_t m = 1000000;
+    const char *haystack =
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+      "A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207"
+      "A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207"
+      "A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207"
+      "A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207"
+      "A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207";
+    char *needle = (char *) malloc (m + 1);
+    if (needle != NULL)
+      {
+        memset (needle, 'A', m);
+        needle[m] = '\0';
+
+        for (; repeat > 0; repeat--)
+          {
+            ASSERT (mbsstr (haystack, needle) == NULL);
+          }
+
+        free (needle);
+      }
+  }
+
+  /* Check that the asymptotic worst-case complexity is not quadratic.  */
+  {
+    size_t m = 1000000;
+    char *haystack = (char *) malloc (2 * m + 3);
+    char *needle = (char *) malloc (m + 3);
+    if (haystack != NULL && needle != NULL)
+      {
+        const char *result;
+
+        memset (haystack, 'A', 2 * m);
+        haystack[2 * m] = '\303'; haystack[2 * m + 1] = '\207';
+        haystack[2 * m + 2] = '\0';
+
+        memset (needle, 'A', m);
+        needle[m] = '\303'; needle[m + 1] = '\207';
+        needle[m + 2] = '\0';
+
+        result = mbsstr (haystack, needle);
+        ASSERT (result == haystack + m);
+      }
+    free (needle);
+    free (haystack);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-mbsstr2.sh b/gnulib-tests/test-mbsstr2.sh
new file mode 100755
index 0000000..5ef7139
--- /dev/null
+++ b/gnulib-tests/test-mbsstr2.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no french Unicode locale is installed"
+  else
+    echo "Skipping test: no french Unicode locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_FR_UTF8 \
+${CHECKER} ./test-mbsstr2${EXEEXT}
diff --git a/gnulib-tests/test-mbsstr3.c b/gnulib-tests/test-mbsstr3.c
new file mode 100644
index 0000000..944b3aa
--- /dev/null
+++ b/gnulib-tests/test-mbsstr3.c
@@ -0,0 +1,81 @@
+/* Test of searching in a string.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include <locale.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  /* Tests with a character < 0x30.  */
+  {
+    const char input[] = "\312\276\300\375 \312\276\300\375 \312\276\300\375"; /* "示例 示例 示例" */
+    const char *result = mbsstr (input, " ");
+    ASSERT (result == input + 4);
+  }
+
+  {
+    const char input[] = "\312\276\300\375"; /* "示例" */
+    const char *result = mbsstr (input, " ");
+    ASSERT (result == NULL);
+  }
+
+  /* Tests with a character >= 0x30.  */
+  {
+    const char input[] = "\272\305123\324\313\320\320\241\243"; /* "号123运行。" */
+    const char *result = mbsstr (input, "2");
+    ASSERT (result == input + 3);
+  }
+
+  /* The following tests show how mbsstr() is different from strstr().  */
+
+  {
+    const char input[] = "\313\320\320\320"; /* "诵行" */
+    const char *result = mbsstr (input, "\320\320"); /* "行" */
+    ASSERT (result == input + 2);
+  }
+
+  {
+    const char input[] = "\203\062\332\066123\324\313\320\320\241\243"; /* "씋123运行。" */
+    const char *result = mbsstr (input, "2");
+    ASSERT (result == input + 5);
+  }
+
+  {
+    const char input[] = "\312\276\300\375 \312\276\300\375 \312\276\300\375"; /* "示例 示例 示例" */
+    const char *result = mbsstr (input, "\276\300"); /* "纠" */
+    ASSERT (result == NULL);
+  }
+
+  {
+    const char input[] = "\312\276\300\375 \312\276\300\375 \312\276\300\375"; /* "示例 示例 示例" */
+    const char *result = mbsstr (input, "\375 "); /* invalid multibyte sequence */
+    ASSERT (result == NULL);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-mbsstr3.sh b/gnulib-tests/test-mbsstr3.sh
new file mode 100755
index 0000000..539f9c0
--- /dev/null
+++ b/gnulib-tests/test-mbsstr3.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific GB18030 locale is installed.
+: ${LOCALE_ZH_CN=zh_CN.GB18030}
+if test $LOCALE_ZH_CN = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no chinese GB18030 locale is installed"
+  else
+    echo "Skipping test: no chinese GB18030 locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_ZH_CN \
+${CHECKER} ./test-mbsstr3${EXEEXT}
diff --git a/gnulib-tests/test-md5.c b/gnulib-tests/test-md5.c
new file mode 100644
index 0000000..53d3eda
--- /dev/null
+++ b/gnulib-tests/test-md5.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2005, 2009-2020 Free Software Foundation, Inc.
+ * Written by Simon Josefsson
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson. */
+
+#include <config.h>
+
+#include "md5.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define TESTFILE "test-md5.data"
+#include "test-digest.h"
+
+int
+main (void)
+{
+  /* Test vectors from RFC 1321. */
+
+  const char *in1 = "abc";
+  const char *out1 =
+    "\x90\x01\x50\x98\x3C\xD2\x4F\xB0\xD6\x96\x3F\x7D\x28\xE1\x7F\x72";
+  const char *in2 = "message digest";
+  const char *out2 =
+    "\xF9\x6B\x69\x7D\x7C\xB7\x93\x8D\x52\x5A\x2F\x31\xAA\xF1\x61\xD0";
+  char buf[MD5_DIGEST_SIZE];
+
+  if (memcmp (md5_buffer (in1, strlen (in1), buf), out1, MD5_DIGEST_SIZE) != 0)
+    {
+      size_t i;
+      printf ("expected:\n");
+      for (i = 0; i < MD5_DIGEST_SIZE; i++)
+        printf ("%02x ", out1[i] & 0xFFu);
+      printf ("\ncomputed:\n");
+      for (i = 0; i < MD5_DIGEST_SIZE; i++)
+        printf ("%02x ", buf[i] & 0xFFu);
+      printf ("\n");
+      return 1;
+    }
+
+  if (memcmp (md5_buffer (in2, strlen (in2), buf), out2, MD5_DIGEST_SIZE) != 0)
+    {
+      size_t i;
+      printf ("expected:\n");
+      for (i = 0; i < MD5_DIGEST_SIZE; i++)
+        printf ("%02x ", out2[i] & 0xFFu);
+      printf ("\ncomputed:\n");
+      for (i = 0; i < MD5_DIGEST_SIZE; i++)
+        printf ("%02x ", buf[i] & 0xFFu);
+      printf ("\n");
+      return 1;
+    }
+
+  /* Test md5_stream.  */
+  test_digest_on_files (md5_stream, "md5_stream", 16,
+                        "\xd4\x1d\x8c\xd9\x8f\x00\xb2\x04\xe9\x80\x09\x98\xec\xf8\x42\x7e",
+                        "\x0d\x70\x06\xcd\x05\x5e\x94\xcf\x61\x45\x87\xe1\xd2\xae\x0c\x8e",
+                        "\xec\x99\x67\x9b\xff\xc0\xf9\xb0\x6d\x18\x30\x6b\x06\xd6\x56\x23");
+
+  return 0;
+}
diff --git a/gnulib-tests/test-memcasecmp.c b/gnulib-tests/test-memcasecmp.c
new file mode 100644
index 0000000..00df2f7
--- /dev/null
+++ b/gnulib-tests/test-memcasecmp.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2008-2020 Free Software Foundation, Inc.
+ * Written by Simon Josefsson and Bruno Haible
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "memcasecmp.h"
+
+#include <string.h>
+
+#include "zerosize-ptr.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Test equal / not equal distinction.  */
+  ASSERT (memcasecmp (zerosize_ptr (), zerosize_ptr (), 0) == 0);
+  ASSERT (memcasecmp ("foo", "foobar", 2) == 0);
+  ASSERT (memcasecmp ("foo", "foobar", 3) == 0);
+  ASSERT (memcasecmp ("foo", "foobar", 4) != 0);
+  ASSERT (memcasecmp ("foo", "bar", 1) != 0);
+  ASSERT (memcasecmp ("foo", "bar", 3) != 0);
+
+  /* Test less / equal / greater distinction.  */
+  ASSERT (memcasecmp ("foo", "moo", 4) < 0);
+  ASSERT (memcasecmp ("moo", "foo", 4) > 0);
+  ASSERT (memcasecmp ("oomph", "oops", 3) < 0);
+  ASSERT (memcasecmp ("oops", "oomph", 3) > 0);
+  ASSERT (memcasecmp ("foo", "foobar", 4) < 0);
+  ASSERT (memcasecmp ("foobar", "foo", 4) > 0);
+
+  /* Test embedded NULs.  */
+  ASSERT (memcasecmp ("1\0", "2\0", 2) < 0);
+  ASSERT (memcasecmp ("2\0", "1\0", 2) > 0);
+  ASSERT (memcasecmp ("x\0""1", "x\0""2", 3) < 0);
+  ASSERT (memcasecmp ("x\0""2", "x\0""1", 3) > 0);
+
+  /* The Next x86 OpenStep bug shows up only when comparing 16 bytes
+     or more and with at least one buffer not starting on a 4-byte boundary.
+     William Lewis provided this test program.   */
+  {
+    char foo[21];
+    char bar[21];
+    int i;
+    for (i = 0; i < 4; i++)
+      {
+        char *a = foo + i;
+        char *b = bar + i;
+        strcpy (a, "--------01111111");
+        strcpy (b, "--------10000000");
+        ASSERT (memcasecmp (a, b, 16) < 0);
+      }
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-memchr.c b/gnulib-tests/test-memchr.c
new file mode 100644
index 0000000..ab8d2c0
--- /dev/null
+++ b/gnulib-tests/test-memchr.c
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2008-2020 Free Software Foundation, Inc.
+ * Written by Eric Blake and Bruno Haible
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (memchr, void *, (void const *, int, size_t));
+
+#include <stdlib.h>
+
+#include "zerosize-ptr.h"
+#include "macros.h"
+
+/* Calculating void * + int is not portable, so this wrapper converts
+   to char * to make the tests easier to write.  */
+#define MEMCHR (char *) memchr
+
+int
+main (void)
+{
+  size_t n = 0x100000;
+  char *input = malloc (n);
+  ASSERT (input);
+
+  input[0] = 'a';
+  input[1] = 'b';
+  memset (input + 2, 'c', 1024);
+  memset (input + 1026, 'd', n - 1028);
+  input[n - 2] = 'e';
+  input[n - 1] = 'a';
+
+  /* Basic behavior tests.  */
+  ASSERT (MEMCHR (input, 'a', n) == input);
+
+  ASSERT (MEMCHR (input, 'a', 0) == NULL);
+  ASSERT (MEMCHR (zerosize_ptr (), 'a', 0) == NULL);
+
+  ASSERT (MEMCHR (input, 'b', n) == input + 1);
+  ASSERT (MEMCHR (input, 'c', n) == input + 2);
+  ASSERT (MEMCHR (input, 'd', n) == input + 1026);
+
+  ASSERT (MEMCHR (input + 1, 'a', n - 1) == input + n - 1);
+  ASSERT (MEMCHR (input + 1, 'e', n - 1) == input + n - 2);
+  ASSERT (MEMCHR (input + 1, 0x789abc00 | 'e', n - 1) == input + n - 2);
+
+  ASSERT (MEMCHR (input, 'f', n) == NULL);
+  ASSERT (MEMCHR (input, '\0', n) == NULL);
+
+  /* Check that a very long haystack is handled quickly if the byte is
+     found near the beginning.  */
+  {
+    size_t repeat = 10000;
+    for (; repeat > 0; repeat--)
+      {
+        ASSERT (MEMCHR (input, 'c', n) == input + 2);
+      }
+  }
+
+  /* Alignment tests.  */
+  {
+    int i, j;
+    for (i = 0; i < 32; i++)
+      {
+        for (j = 0; j < 256; j++)
+          input[i + j] = j;
+        for (j = 0; j < 256; j++)
+          {
+            ASSERT (MEMCHR (input + i, j, 256) == input + i + j);
+          }
+      }
+  }
+
+  /* Check that memchr() does not read past the first occurrence of the
+     byte being searched.  See the Austin Group's clarification
+     <https://www.opengroup.org/austin/docs/austin_454.txt>.
+     Test both '\0' and something else, since some implementations
+     special-case searching for NUL.
+  */
+  {
+    char *page_boundary = (char *) zerosize_ptr ();
+    /* Too small, and we miss cache line boundary tests; too large,
+       and the test takes cubically longer to complete.  */
+    int limit = 257;
+
+    if (page_boundary != NULL)
+      {
+        for (n = 1; n <= limit; n++)
+          {
+            char *mem = page_boundary - n;
+            memset (mem, 'X', n);
+            ASSERT (MEMCHR (mem, 'U', n) == NULL);
+            ASSERT (MEMCHR (mem, 0, n) == NULL);
+
+            {
+              size_t i;
+              size_t k;
+
+              for (i = 0; i < n; i++)
+                {
+                  mem[i] = 'U';
+                  for (k = i + 1; k < n + limit; k++)
+                    ASSERT (MEMCHR (mem, 'U', k) == mem + i);
+                  mem[i] = 0;
+                  for (k = i + 1; k < n + limit; k++)
+                    ASSERT (MEMCHR (mem, 0, k) == mem + i);
+                  mem[i] = 'X';
+                }
+            }
+          }
+      }
+  }
+
+  free (input);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-memchr2.c b/gnulib-tests/test-memchr2.c
new file mode 100644
index 0000000..47428f2
--- /dev/null
+++ b/gnulib-tests/test-memchr2.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2008-2020 Free Software Foundation, Inc.
+ * Written by Eric Blake
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "memchr2.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "zerosize-ptr.h"
+#include "macros.h"
+
+/* Calculating void * + int is not portable, so this wrapper converts
+   to char * to make the tests easier to write.  */
+#define MEMCHR2 (char *) memchr2
+
+int
+main (void)
+{
+  size_t n = 0x100000;
+  char *input = malloc (n);
+  ASSERT (input);
+
+  input[0] = 'a';
+  input[1] = 'b';
+  memset (input + 2, 'c', 1024);
+  memset (input + 1026, 'd', n - 1028);
+  input[n - 2] = 'e';
+  input[n - 1] = 'a';
+
+  /* Basic behavior tests.  */
+  ASSERT (MEMCHR2 (input, 'a', 'b', n) == input);
+  ASSERT (MEMCHR2 (input, 'b', 'a', n) == input);
+
+  ASSERT (MEMCHR2 (input, 'a', 'b', 0) == NULL);
+  ASSERT (MEMCHR2 (zerosize_ptr (), 'a', 'b', 0) == NULL);
+
+  ASSERT (MEMCHR2 (input, 'b', 'd', n) == input + 1);
+  ASSERT (MEMCHR2 (input + 2, 'b', 'd', n - 2) == input + 1026);
+
+  ASSERT (MEMCHR2 (input, 'd', 'e', n) == input + 1026);
+  ASSERT (MEMCHR2 (input, 'e', 'd', n) == input + 1026);
+
+  ASSERT (MEMCHR2 (input + 1, 'a', 'e', n - 1) == input + n - 2);
+  ASSERT (MEMCHR2 (input + 1, 'e', 'a', n - 1) == input + n - 2);
+
+  ASSERT (MEMCHR2 (input, 'f', 'g', n) == NULL);
+  ASSERT (MEMCHR2 (input, 'f', '\0', n) == NULL);
+
+  ASSERT (MEMCHR2 (input, 'a', 'a', n) == input);
+  ASSERT (MEMCHR2 (input + 1, 'a', 'a', n - 1) == input + n - 1);
+  ASSERT (MEMCHR2 (input, 'f', 'f', n) == NULL);
+
+  /* Check that a very long haystack is handled quickly if one of the
+     two bytes is found near the beginning.  */
+  {
+    size_t repeat = 10000;
+    for (; repeat > 0; repeat--)
+      {
+        ASSERT (MEMCHR2 (input, 'c', 'e', n) == input + 2);
+        ASSERT (MEMCHR2 (input, 'e', 'c', n) == input + 2);
+        ASSERT (MEMCHR2 (input, 'c', '\0', n) == input + 2);
+        ASSERT (MEMCHR2 (input, '\0', 'c', n) == input + 2);
+      }
+  }
+
+  /* Alignment tests.  */
+  {
+    int i, j;
+    for (i = 0; i < 32; i++)
+      {
+        for (j = 0; j < 256; j++)
+          input[i + j] = j;
+        for (j = 0; j < 256; j++)
+          {
+            ASSERT (MEMCHR2 (input + i, j, 0xff, 256) == input + i + j);
+            ASSERT (MEMCHR2 (input + i, 0xff, j, 256) == input + i + j);
+          }
+      }
+  }
+
+  free (input);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-memcoll.c b/gnulib-tests/test-memcoll.c
new file mode 100644
index 0000000..62b5533
--- /dev/null
+++ b/gnulib-tests/test-memcoll.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2008-2020 Free Software Foundation, Inc.
+ * Written by Simon Josefsson and Bruno Haible
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "memcoll.h"
+
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Test equal / not equal distinction.  */
+  ASSERT (memcoll0 ("", 1, "", 1) == 0);
+  ASSERT (memcoll0 ("fo", 3, "fo", 3) == 0);
+  ASSERT (memcoll0 ("foo", 4, "foo", 4) == 0);
+  ASSERT (memcoll0 ("foo\0", 5, "foob", 5) != 0);
+  ASSERT (memcoll0 ("f", 2, "b", 2) != 0);
+  ASSERT (memcoll0 ("foo", 4, "bar", 4) != 0);
+
+  /* Test less / equal / greater distinction.  */
+  ASSERT (memcoll0 ("foo\0", 5, "moo\0", 5) < 0);
+  ASSERT (memcoll0 ("moo\0", 5, "foo\0", 5) > 0);
+  ASSERT (memcoll0 ("oom", 4, "oop", 4) < 0);
+  ASSERT (memcoll0 ("oop", 4, "oom", 4) > 0);
+  ASSERT (memcoll0 ("foo\0", 5, "foob", 5) < 0);
+  ASSERT (memcoll0 ("foob", 5, "foo\0", 5) > 0);
+
+  /* Test embedded NULs.  */
+  ASSERT (memcoll0 ("1\0", 3, "2\0", 3) < 0);
+  ASSERT (memcoll0 ("2\0", 3, "1\0", 3) > 0);
+  ASSERT (memcoll0 ("x\0""1", 4, "x\0""2", 4) < 0);
+  ASSERT (memcoll0 ("x\0""2", 4, "x\0""1", 4) > 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-memrchr.c b/gnulib-tests/test-memrchr.c
new file mode 100644
index 0000000..001134b
--- /dev/null
+++ b/gnulib-tests/test-memrchr.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2008-2020 Free Software Foundation, Inc.
+ * Written by Eric Blake and Bruno Haible
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (memrchr, void *, (void const *, int, size_t));
+
+#include <stdlib.h>
+
+#include "zerosize-ptr.h"
+#include "macros.h"
+
+/* Calculating void * + int is not portable, so this wrapper converts
+   to char * to make the tests easier to write.  */
+#define MEMRCHR (char *) memrchr
+
+int
+main (void)
+{
+  size_t n = 0x100000;
+  char *input = malloc (n);
+  ASSERT (input);
+
+  input[n - 1] = 'a';
+  input[n - 2] = 'b';
+  memset (input + n - 1026, 'c', 1024);
+  memset (input + 2, 'd', n - 1028);
+  input[1] = 'e';
+  input[0] = 'a';
+
+  /* Basic behavior tests.  */
+  ASSERT (MEMRCHR (input, 'a', n) == input + n - 1);
+
+  ASSERT (MEMRCHR (input, 'a', 0) == NULL);
+  ASSERT (MEMRCHR (zerosize_ptr (), 'a', 0) == NULL);
+
+  ASSERT (MEMRCHR (input, 'b', n) == input + n - 2);
+  ASSERT (MEMRCHR (input, 'c', n) == input + n - 3);
+  ASSERT (MEMRCHR (input, 'd', n) == input + n - 1027);
+
+  ASSERT (MEMRCHR (input, 'a', n - 1) == input);
+  ASSERT (MEMRCHR (input, 'e', n - 1) == input + 1);
+
+  ASSERT (MEMRCHR (input, 'f', n) == NULL);
+  ASSERT (MEMRCHR (input, '\0', n) == NULL);
+
+  /* Check that a very long haystack is handled quickly if the byte is
+     found near the end.  */
+  {
+    size_t repeat = 10000;
+    for (; repeat > 0; repeat--)
+      {
+        ASSERT (MEMRCHR (input, 'c', n) == input + n - 3);
+      }
+  }
+
+  /* Alignment tests.  */
+  {
+    int i, j;
+    for (i = 0; i < 32; i++)
+      {
+        for (j = 0; j < 256; j++)
+          input[i + j] = j;
+        for (j = 0; j < 256; j++)
+          {
+            ASSERT (MEMRCHR (input + i, j, 256) == input + i + j);
+          }
+      }
+  }
+
+  free (input);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-mkdir.c b/gnulib-tests/test-mkdir.c
new file mode 100644
index 0000000..9ce5817
--- /dev/null
+++ b/gnulib-tests/test-mkdir.c
@@ -0,0 +1,47 @@
+/* Tests of mkdir.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (mkdir, int, (char const *, mode_t));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-mkdir.t"
+
+#include "test-mkdir.h"
+
+int
+main (void)
+{
+  /* Clean up any trash from prior testsuite runs.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_mkdir (mkdir, true);
+}
diff --git a/gnulib-tests/test-mkdir.h b/gnulib-tests/test-mkdir.h
new file mode 100644
index 0000000..7da2706
--- /dev/null
+++ b/gnulib-tests/test-mkdir.h
@@ -0,0 +1,98 @@
+/* Test of mkdir() function.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This file is designed to test both mkdir(a,b) and
+   mkdirat(AT_FDCWD,a,b).  FUNC is the function to test.  Assumes that
+   BASE and ASSERT are already defined, and that appropriate headers
+   are already included.  If PRINT, warn before skipping tests with
+   status 77 when symlinks are unsupported.  */
+
+static int
+test_mkdir (int (*func) (char const *, mode_t), bool print)
+{
+  /* Test basic error handling.  */
+  ASSERT (close (creat (BASE "file", 0600)) == 0);
+  errno = 0;
+  ASSERT (func (BASE "file", 0700) == -1);
+  ASSERT (errno == EEXIST);
+  errno = 0;
+  ASSERT (func (BASE "file/", 0700) == -1);
+  ASSERT (errno == ENOTDIR || errno == EEXIST);
+  errno = 0;
+  ASSERT (func (BASE "file/dir", 0700) == -1);
+  ASSERT (errno == ENOTDIR || errno == ENOENT || errno == EOPNOTSUPP);
+  ASSERT (unlink (BASE "file") == 0);
+  errno = 0;
+  ASSERT (func ("", 0700) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (BASE "dir/sub", 0700) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (BASE "dir/.", 0700) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (BASE "dir/.//", 0700) == -1);
+  ASSERT (errno == ENOENT);
+
+  /* Test trailing slash handling.  */
+  ASSERT (func (BASE "dir", 0700) == 0);
+  errno = 0;
+  ASSERT (func (BASE "dir", 0700) == -1);
+  ASSERT (errno == EEXIST);
+  ASSERT (rmdir (BASE "dir") == 0);
+  ASSERT (func (BASE "dir/", 0700) == 0);
+  errno = 0;
+  ASSERT (func (BASE "dir/", 0700) == -1);
+  ASSERT (errno == EEXIST);
+  ASSERT (rmdir (BASE "dir") == 0);
+
+  /* Test symlink behavior.  POSIX requires the creation of
+     directories through a dangling symlink with trailing slash, but
+     GNU does not yet implement that, so we support either behavior
+     for now.  */
+  if (symlink (BASE "dir", BASE "link"))
+    {
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  errno = 0;
+  ASSERT (func (BASE "link", 0700) == -1);
+  ASSERT (errno == EEXIST);
+  {
+    int result;
+    errno = 0;
+    result = func (BASE "link/", 0700);
+    if (!result)
+      ASSERT (rmdir (BASE "dir") == 0);
+    else
+      {
+        ASSERT (result == -1);
+        ASSERT (errno == EEXIST);
+        errno = 0;
+        ASSERT (rmdir (BASE "dir") == -1);
+        ASSERT (errno == ENOENT);
+      }
+  }
+  errno = 0;
+  ASSERT (func (BASE "link/.", 0700) == -1);
+  ASSERT (errno == ENOENT);
+  ASSERT (unlink (BASE "link") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-mkfifo.c b/gnulib-tests/test-mkfifo.c
new file mode 100644
index 0000000..2c7fd2c
--- /dev/null
+++ b/gnulib-tests/test-mkfifo.c
@@ -0,0 +1,47 @@
+/* Tests of mkfifo.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (mkfifo, int, (char const *, mode_t));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-mkfifo.t"
+
+#include "test-mkfifo.h"
+
+int
+main (void)
+{
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_mkfifo (mkfifo, true);
+}
diff --git a/gnulib-tests/test-mkfifo.h b/gnulib-tests/test-mkfifo.h
new file mode 100644
index 0000000..91d5cd2
--- /dev/null
+++ b/gnulib-tests/test-mkfifo.h
@@ -0,0 +1,77 @@
+/* Tests of mkfifo and friends.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+/* This file is designed to test mkfifo(n,m), mknod(n,m|S_IFIFO,0),
+   mkfifoat(AT_FDCWD,n,m), and mknodat(AT_FDCWD,n,m|S_IFIFO,0).  FUNC
+   is the function to test.  Assumes that BASE and ASSERT are already
+   defined, and that appropriate headers are already included.  If
+   PRINT, warn before skipping symlink tests with status 77.  */
+
+static int
+test_mkfifo (int (*func) (char const *, mode_t), bool print)
+{
+  int result = func (BASE "fifo", 0600);
+  struct stat st;
+  if (result == -1 && errno == ENOSYS)
+    {
+      if (print)
+        fputs ("skipping test: no support for named fifos\n", stderr);
+      return 77;
+    }
+  ASSERT (result == 0);
+  ASSERT (stat (BASE "fifo", &st) == 0);
+  ASSERT (S_ISFIFO (st.st_mode));
+
+  /* Sanity checks of failures.  */
+  errno = 0;
+  ASSERT (func ("", S_IRUSR | S_IWUSR) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (".", 0600) == -1);
+  /* Allow HP-UX 11.11's EISDIR, even though POSIX says it's wrong,
+     since it doesn't really hurt anything and we lack the energy to
+     fix it.  */
+  ASSERT (errno == EEXIST || errno == EINVAL || errno == EISDIR);
+  errno = 0;
+  ASSERT (func (BASE "fifo", 0600) == -1);
+  ASSERT (errno == EEXIST);
+  ASSERT (unlink (BASE "fifo") == 0);
+  errno = 0;
+  ASSERT (func (BASE "fifo/", 0600) == -1);
+  ASSERT (errno == ENOENT || errno == ENOTDIR);
+
+  /* Test trailing slash behavior.  */
+  if (symlink (BASE "fifo", BASE "link"))
+    {
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  errno = 0;
+  ASSERT (func (BASE "link", 0600) == -1);
+  ASSERT (errno == EEXIST);
+  errno = 0;
+  ASSERT (func (BASE "link/", 0600) == -1);
+  ASSERT (errno == EEXIST || errno == ENOENT || errno == ENOTDIR);
+  errno = 0;
+  ASSERT (unlink (BASE "fifo") == -1);
+  ASSERT (errno == ENOENT);
+  ASSERT (unlink (BASE "link") == 0);
+  return 0;
+}
diff --git a/gnulib-tests/test-mknod.c b/gnulib-tests/test-mknod.c
new file mode 100644
index 0000000..8dee3b0
--- /dev/null
+++ b/gnulib-tests/test-mknod.c
@@ -0,0 +1,56 @@
+/* Tests of mknod.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (mknod, int, (char const *, mode_t, dev_t));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-mknod.t"
+
+#include "test-mkfifo.h"
+
+/* Wrapper around mknod, to create fifos.  */
+static int
+do_mknod (char const *name, mode_t mode)
+{
+  return mknod (name, mode | S_IFIFO, 0);
+}
+
+int
+main (void)
+{
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  /* We can only portably test creation of fifos.  Anything else
+     requires root privileges and knowledge of device numbers.  */
+  return test_mkfifo (do_mknod, true);
+}
diff --git a/gnulib-tests/test-nanosleep.c b/gnulib-tests/test-nanosleep.c
new file mode 100644
index 0000000..e82e45d
--- /dev/null
+++ b/gnulib-tests/test-nanosleep.c
@@ -0,0 +1,83 @@
+/* Test of nanosleep() function.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <time.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (nanosleep, int, (struct timespec const *, struct timespec *));
+
+#include <errno.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#if HAVE_DECL_ALARM
+static void
+handle_alarm (int sig)
+{
+  if (sig != SIGALRM)
+    _exit (1);
+}
+#endif
+
+int
+main (void)
+{
+  struct timespec ts;
+
+  ts.tv_sec = 1000;
+  ts.tv_nsec = -1;
+  errno = 0;
+  ASSERT (nanosleep (&ts, NULL) == -1);
+  ASSERT (errno == EINVAL);
+  ts.tv_nsec = 1000000000;
+  errno = 0;
+  ASSERT (nanosleep (&ts, NULL) == -1);
+  ASSERT (errno == EINVAL);
+
+  ts.tv_sec = 0;
+  ts.tv_nsec = 1;
+  ASSERT (nanosleep (&ts, &ts) == 0);
+  /* Remaining time is only defined on EINTR failure; but on success,
+     it is typically either 0 or unchanged from input.  At any rate,
+     it shouldn't be randomly changed to unrelated values.  */
+  ASSERT (ts.tv_sec == 0);
+  ASSERT (ts.tv_nsec == 0 || ts.tv_nsec == 1);
+  ts.tv_nsec = 0;
+  ASSERT (nanosleep (&ts, NULL) == 0);
+
+#if HAVE_DECL_ALARM
+  {
+    const time_t pentecost = 50 * 24 * 60 * 60; /* 50 days.  */
+    signal (SIGALRM, handle_alarm);
+    alarm (1);
+    ts.tv_sec = pentecost;
+    ts.tv_nsec = 999999999;
+    errno = 0;
+    ASSERT (nanosleep (&ts, &ts) == -1);
+    ASSERT (errno == EINTR);
+    ASSERT (pentecost - 10 < ts.tv_sec && ts.tv_sec <= pentecost);
+    ASSERT (0 <= ts.tv_nsec && ts.tv_nsec <= 999999999);
+  }
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-netdb.c b/gnulib-tests/test-netdb.c
new file mode 100644
index 0000000..b606eb5
--- /dev/null
+++ b/gnulib-tests/test-netdb.c
@@ -0,0 +1,32 @@
+/* Test of <netdb.h> substitute.
+   Copyright (C) 2007-2008, 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson <simon@josefsson.org>, 2008.  */
+
+#include <config.h>
+#include <netdb.h>
+
+/* Check that the 'struct hostent' type is defined.  */
+struct hostent t1;
+
+/* Check that the 'socklen_t' type is defined.  */
+socklen_t t2;
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-netinet_in.c b/gnulib-tests/test-netinet_in.c
new file mode 100644
index 0000000..f170410
--- /dev/null
+++ b/gnulib-tests/test-netinet_in.c
@@ -0,0 +1,27 @@
+/* Test of <netinet/in.h> substitute.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <netinet/in.h>
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-nl_langinfo-mt.c b/gnulib-tests/test-nl_langinfo-mt.c
new file mode 100644
index 0000000..de6cd99
--- /dev/null
+++ b/gnulib-tests/test-nl_langinfo-mt.c
@@ -0,0 +1,255 @@
+/* Multithread-safety test for nl_langinfo().
+   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+
+/* Specification.  */
+#include <langinfo.h>
+
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include "glthread/thread.h"
+
+
+/* Some common locale names.  */
+
+#if defined _WIN32 && !defined __CYGWIN__
+# define ENGLISH "English_United States"
+# define FRENCH  "French_France"
+# define GERMAN  "German_Germany"
+# define ENCODING ".1252"
+#else
+# define ENGLISH "en_US"
+# define FRENCH  "fr_FR"
+# define GERMAN  "de_DE"
+# if defined __sgi
+#  define ENCODING ".ISO8859-15"
+# elif defined __hpux
+#  define ENCODING ".utf8"
+# else
+#  define ENCODING ".UTF-8"
+# endif
+#endif
+
+static const char LOCALE1[] = ENGLISH ENCODING;
+static const char LOCALE2[] = FRENCH ENCODING;
+static const char LOCALE3[] = GERMAN ENCODING;
+
+static char *expected1;
+
+static void *
+thread1_func (void *arg)
+{
+  for (;;)
+    {
+      const char *value = nl_langinfo (CODESET);
+      if (strcmp (expected1, value) != 0)
+        {
+          fprintf (stderr, "thread1 disturbed by threadN!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+  return NULL;
+}
+
+static char *expected2;
+
+static void *
+thread2_func (void *arg)
+{
+  for (;;)
+    {
+      const char *value = nl_langinfo (PM_STR);
+      if (strcmp (expected2, value) != 0)
+        {
+          fprintf (stderr, "thread2 disturbed by threadN!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+  return NULL;
+}
+
+static char *expected3;
+
+static void *
+thread3_func (void *arg)
+{
+  for (;;)
+    {
+      const char *value = nl_langinfo (DAY_2);
+      if (strcmp (expected3, value) != 0)
+        {
+          fprintf (stderr, "thread3 disturbed by threadN!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+  return NULL;
+}
+
+static char *expected4;
+
+static void *
+thread4_func (void *arg)
+{
+  for (;;)
+    {
+      const char *value = nl_langinfo (ALTMON_2);
+      if (strcmp (expected4, value) != 0)
+        {
+          fprintf (stderr, "thread4 disturbed by threadN!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+  return NULL;
+}
+
+static char *expected5;
+
+static void *
+thread5_func (void *arg)
+{
+  for (;;)
+    {
+      const char *value = nl_langinfo (CRNCYSTR);
+      if (strcmp (expected5, value) != 0)
+        {
+          fprintf (stderr, "thread5 disturbed by threadN!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+  return NULL;
+}
+
+static char *expected6;
+
+static void *
+thread6_func (void *arg)
+{
+  for (;;)
+    {
+      const char *value = nl_langinfo (RADIXCHAR);
+      if (strcmp (expected6, value) != 0)
+        {
+          fprintf (stderr, "thread6 disturbed by threadN!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+  return NULL;
+}
+
+static void *
+threadN_func (void *arg)
+{
+  for (;;)
+    {
+      nl_langinfo (CODESET);   /* LC_CTYPE */    /* locale charmap */
+      nl_langinfo (AM_STR);    /* LC_TIME */     /* locale -k am_pm */
+      nl_langinfo (PM_STR);    /* LC_TIME */     /* locale -k am_pm */
+      nl_langinfo (DAY_2);     /* LC_TIME */     /* locale -k day */
+      nl_langinfo (DAY_5);     /* LC_TIME */     /* locale -k day */
+      nl_langinfo (ALTMON_2);  /* LC_TIME */     /* locale -k alt_mon */
+      nl_langinfo (ALTMON_9);  /* LC_TIME */     /* locale -k alt_mon */
+      nl_langinfo (CRNCYSTR);  /* LC_MONETARY */ /* locale -k currency_symbol */
+      nl_langinfo (RADIXCHAR); /* LC_NUMERIC */  /* locale -k decimal_point */
+      nl_langinfo (THOUSEP);   /* LC_NUMERIC */  /* locale -k thousands_sep */
+    }
+
+  /*NOTREACHED*/
+  return NULL;
+}
+
+int
+main (int argc, char *argv[])
+{
+  if (setlocale (LC_ALL, LOCALE1) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE1 not recognized\n");
+      return 77;
+    }
+  if (setlocale (LC_MONETARY, LOCALE2) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE2 not recognized\n");
+      return 77;
+    }
+  if (setlocale (LC_NUMERIC, LOCALE3) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE3 not recognized\n");
+      return 77;
+    }
+
+  expected1 = strdup (nl_langinfo (CODESET));
+  expected2 = strdup (nl_langinfo (PM_STR));
+  expected3 = strdup (nl_langinfo (DAY_2));
+  expected4 = strdup (nl_langinfo (ALTMON_2));
+  expected5 = strdup (nl_langinfo (CRNCYSTR));
+  expected6 = strdup (nl_langinfo (RADIXCHAR));
+
+  /* Create the checker threads.  */
+  gl_thread_create (thread1_func, NULL);
+  gl_thread_create (thread2_func, NULL);
+  gl_thread_create (thread3_func, NULL);
+  gl_thread_create (thread4_func, NULL);
+  gl_thread_create (thread5_func, NULL);
+  gl_thread_create (thread6_func, NULL);
+  /* Create the disturber thread.  */
+  gl_thread_create (threadN_func, NULL);
+
+  /* Let them run for 2 seconds.  */
+  {
+    struct timespec duration;
+    duration.tv_sec = (argc > 1 ? atoi (argv[1]) : 2);
+    duration.tv_nsec = 0;
+
+    nanosleep (&duration, NULL);
+  }
+
+  return 0;
+}
+
+#else
+
+/* No multithreading available.  */
+
+#include <stdio.h>
+
+int
+main ()
+{
+  fputs ("Skipping test: multithreading not enabled\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/gnulib-tests/test-nl_langinfo.c b/gnulib-tests/test-nl_langinfo.c
new file mode 100644
index 0000000..e21d003
--- /dev/null
+++ b/gnulib-tests/test-nl_langinfo.c
@@ -0,0 +1,152 @@
+/* Test of nl_langinfo replacement.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+#include <langinfo.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (nl_langinfo, char *, (nl_item));
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "c-strcase.h"
+#include "macros.h"
+
+/* For GCC >= 4.3, silence the warnings
+     "comparison of unsigned expression >= 0 is always true"
+   in this file.  */
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
+# pragma GCC diagnostic ignored "-Wtype-limits"
+#endif
+
+int
+main (int argc, char *argv[])
+{
+  int pass = atoi (argv[1]);
+  /* pass    locale
+      0        C
+      1        traditional French locale
+      2        French UTF-8 locale
+   */
+
+  setlocale (LC_ALL, "");
+
+  /* nl_langinfo items of the LC_CTYPE category */
+  ASSERT (strlen (nl_langinfo (CODESET)) > 0);
+  if (pass == 2)
+    {
+      const char *codeset = nl_langinfo (CODESET);
+      ASSERT (c_strcasecmp (codeset, "UTF-8") == 0 || c_strcasecmp (codeset, "UTF8") == 0);
+    }
+  /* nl_langinfo items of the LC_NUMERIC category */
+  ASSERT (strlen (nl_langinfo (RADIXCHAR)) > 0);
+  ASSERT (strlen (nl_langinfo (THOUSEP)) >= 0);
+  /* nl_langinfo items of the LC_TIME category */
+  ASSERT (strlen (nl_langinfo (D_T_FMT)) > 0);
+  ASSERT (strlen (nl_langinfo (D_FMT)) > 0);
+  ASSERT (strlen (nl_langinfo (T_FMT)) > 0);
+  ASSERT (strlen (nl_langinfo (T_FMT_AMPM)) >= (pass == 0 ? 1 : 0));
+  ASSERT (strlen (nl_langinfo (AM_STR)) >= (pass == 0 ? 1 : 0));
+  ASSERT (strlen (nl_langinfo (PM_STR)) >= (pass == 0 ? 1 : 0));
+  ASSERT (strlen (nl_langinfo (DAY_1)) > 0);
+  ASSERT (strlen (nl_langinfo (DAY_2)) > 0);
+  ASSERT (strlen (nl_langinfo (DAY_3)) > 0);
+  ASSERT (strlen (nl_langinfo (DAY_4)) > 0);
+  ASSERT (strlen (nl_langinfo (DAY_5)) > 0);
+  ASSERT (strlen (nl_langinfo (DAY_6)) > 0);
+  ASSERT (strlen (nl_langinfo (DAY_7)) > 0);
+  ASSERT (strlen (nl_langinfo (ABDAY_1)) > 0);
+  ASSERT (strlen (nl_langinfo (ABDAY_2)) > 0);
+  ASSERT (strlen (nl_langinfo (ABDAY_3)) > 0);
+  ASSERT (strlen (nl_langinfo (ABDAY_4)) > 0);
+  ASSERT (strlen (nl_langinfo (ABDAY_5)) > 0);
+  ASSERT (strlen (nl_langinfo (ABDAY_6)) > 0);
+  ASSERT (strlen (nl_langinfo (ABDAY_7)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_1)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_2)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_3)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_4)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_5)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_6)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_7)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_8)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_9)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_10)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_11)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_12)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_1)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_2)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_3)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_4)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_5)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_6)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_7)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_8)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_9)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_10)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_11)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_12)) > 0);
+  /* In the tested locales, alternate month names and month names ought to be
+     the same.  */
+  ASSERT (strcmp (nl_langinfo (ALTMON_1), nl_langinfo (MON_1)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_2), nl_langinfo (MON_2)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_3), nl_langinfo (MON_3)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_4), nl_langinfo (MON_4)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_5), nl_langinfo (MON_5)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_6), nl_langinfo (MON_6)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_7), nl_langinfo (MON_7)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_8), nl_langinfo (MON_8)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_9), nl_langinfo (MON_9)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_10), nl_langinfo (MON_10)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_11), nl_langinfo (MON_11)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_12), nl_langinfo (MON_12)) == 0);
+  ASSERT (strlen (nl_langinfo (ABMON_1)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_2)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_3)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_4)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_5)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_6)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_7)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_8)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_9)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_10)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_11)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_12)) > 0);
+  ASSERT (strlen (nl_langinfo (ERA)) >= 0);
+  ASSERT (strlen (nl_langinfo (ERA_D_FMT)) >= 0);
+  ASSERT (strlen (nl_langinfo (ERA_D_T_FMT)) >= 0);
+  ASSERT (strlen (nl_langinfo (ERA_T_FMT)) >= 0);
+  ASSERT (nl_langinfo (ALT_DIGITS) != NULL);
+  /* nl_langinfo items of the LC_MONETARY category */
+  {
+    const char *currency = nl_langinfo (CRNCYSTR);
+    ASSERT (strlen (currency) >= 0);
+#if !defined __NetBSD__
+    if (pass > 0)
+      ASSERT (strlen (currency) >= 1);
+#endif
+  }
+  /* nl_langinfo items of the LC_MESSAGES category */
+  ASSERT (strlen (nl_langinfo (YESEXPR)) > 0);
+  ASSERT (strlen (nl_langinfo (NOEXPR)) > 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-nl_langinfo.sh b/gnulib-tests/test-nl_langinfo.sh
new file mode 100755
index 0000000..b1ce46c
--- /dev/null
+++ b/gnulib-tests/test-nl_langinfo.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+LC_ALL=C ${CHECKER} ./test-nl_langinfo${EXEEXT} 0 || exit 1
+
+# Test whether a specific traditional locale is installed.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR ${CHECKER} ./test-nl_langinfo${EXEEXT} 1 || exit 1
+fi
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 != none; then
+  LC_ALL=$LOCALE_FR_UTF8 ${CHECKER} ./test-nl_langinfo${EXEEXT} 2 || exit 1
+fi
+
+exit 0
diff --git a/gnulib-tests/test-nstrftime.c b/gnulib-tests/test-nstrftime.c
new file mode 100644
index 0000000..cb9e2d6
--- /dev/null
+++ b/gnulib-tests/test-nstrftime.c
@@ -0,0 +1,264 @@
+/* Test that nstrftime works as required.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <config.h>
+
+#include "strftime.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "macros.h"
+#define STREQ(a, b) (strcmp (a, b) == 0)
+
+/* Support for settings like TZ='<+00>0' was added in IEEE Std 1003.1-2001.  */
+#define TZ_ANGLE_BRACKETS_SHOULD_WORK (200112 <= _POSIX_VERSION)
+
+struct posixtm_test
+{
+  time_t in;
+  int in_ns;
+  char const *fmt;
+  char const *exp;
+};
+
+static struct posixtm_test const T[] =
+  {
+    { 1300000000, 0,            "%F", "2011-03-13" },
+    { 0,          10,           "%T.%N", "00:00:00.000000010" },
+    { 56,         123456789,    "%T.%12N", "00:00:56.123456789000" },
+    { 0,          0,            NULL, NULL }
+  };
+
+static int
+posixtm_test (void)
+{
+  int fail = 0;
+  unsigned int i;
+
+  for (i = 0; T[i].fmt; i++)
+    {
+      char buf[1000];
+      time_t t = T[i].in;
+      struct tm *tm = gmtime (&t);
+      size_t n;
+
+      ASSERT (tm);
+
+      n = nstrftime (buf, sizeof buf, T[i].fmt, tm, 0, T[i].in_ns);
+      if (n == 0)
+        {
+          fail = 1;
+          printf ("nstrftime failed with format %s\n", T[i].fmt);
+        }
+
+      if (! STREQ (buf, T[i].exp))
+        {
+          fail = 1;
+          printf ("%s: result mismatch: got %s, expected %s\n",
+                  T[i].fmt, buf, T[i].exp);
+        }
+    }
+
+  return fail;
+}
+
+struct tzalloc_test
+{
+  timezone_t tz;
+  char const *setting;
+};
+
+static struct tzalloc_test TZ[] =
+  {
+#define Pacific 0
+    { 0, "PST8PDT,M3.2.0,M11.1.0"      },
+#define Arizona 1
+    { 0, "MST7"                        },
+#define UTC 2
+    { 0, 0                             },
+#define CentEur 3
+    { 0, "CET-1CEST,M3.5.0,M10.5.0/3"  },
+#define Japan 4
+    { 0, "JST-9"                       },
+#define NZ 5
+    { 0, "NZST-12NZDT,M9.5.0,M4.1.0/3" },
+#define Unknown 6
+    { 0, "<-00>0" },
+    { 0 }
+  };
+
+struct localtime_rz_test
+{
+  /* Input parameters.  */
+  struct tzalloc_test *tza;
+  time_t t;
+
+  /* Expected result.  */
+  char const *exp;
+
+  /* Determines if an incorrectly unset tm_isdst
+     results in failure or just a warning.  */
+  int ahistorical;
+};
+
+static struct localtime_rz_test LT[] =
+  {
+    { TZ+Pacific,          0, "1969-12-31 16:00:00 -0800 (PST)",  0 },
+    { TZ+Arizona,          0, "1969-12-31 17:00:00 -0700 (MST)",  0 },
+    { TZ+UTC    ,          0, "1970-01-01 00:00:00 +0000 (UTC)",  0 },
+    { TZ+CentEur,          0, "1970-01-01 01:00:00 +0100 (CET)",  0 },
+    { TZ+Japan  ,          0, "1970-01-01 09:00:00 +0900 (JST)",  0 },
+    { TZ+NZ     ,          0, "1970-01-01 13:00:00 +1300 (NZDT)", 1 },
+    { TZ+Pacific,  500000001, "1985-11-04 16:53:21 -0800 (PST)",  0 },
+    { TZ+Arizona,  500000001, "1985-11-04 17:53:21 -0700 (MST)",  0 },
+    { TZ+UTC    ,  500000001, "1985-11-05 00:53:21 +0000 (UTC)",  0 },
+    { TZ+CentEur,  500000001, "1985-11-05 01:53:21 +0100 (CET)",  1 },
+    { TZ+Japan  ,  500000001, "1985-11-05 09:53:21 +0900 (JST)",  0 },
+    { TZ+NZ     ,  500000001, "1985-11-05 13:53:21 +1300 (NZDT)", 0 },
+    { TZ+Pacific, 1000000002, "2001-09-08 18:46:42 -0700 (PDT)",  0 },
+    { TZ+Arizona, 1000000002, "2001-09-08 18:46:42 -0700 (MST)",  0 },
+    { TZ+UTC    , 1000000002, "2001-09-09 01:46:42 +0000 (UTC)",  0 },
+    { TZ+CentEur, 1000000002, "2001-09-09 03:46:42 +0200 (CEST)", 0 },
+    { TZ+Japan  , 1000000002, "2001-09-09 10:46:42 +0900 (JST)",  0 },
+    { TZ+NZ     , 1000000002, "2001-09-09 13:46:42 +1200 (NZST)", 0 },
+#if TZ_ANGLE_BRACKETS_SHOULD_WORK
+    { TZ+Unknown,          0, "1970-01-01 00:00:00 -0000 (-00)",  0 },
+    { TZ+Unknown,  500000001, "1985-11-05 00:53:21 -0000 (-00)",  0 },
+    { TZ+Unknown, 1000000002, "2001-09-09 01:46:42 -0000 (-00)",  0 },
+#endif
+    { 0 }
+  };
+
+static int
+tzalloc_test (void)
+{
+  int fail = 0;
+  int i;
+
+  for (i = 0; LT[i].tza; i++)
+    {
+      struct tzalloc_test *tza = LT[i].tza;
+      long lt = LT[i].t;
+      timezone_t tz = tza->tz;
+      char const *setting;
+      static char const format[] = "%Y-%m-%d %H:%M:%S %z (%Z)";
+      char buf[1000];
+      struct tm tm;
+      size_t n;
+
+      if (!tz && tza->setting)
+        {
+          tz = tzalloc (tza->setting);
+          if (!tz)
+            {
+              fail = 1;
+              printf ("%s: tzalloc: %s\n", TZ[i].setting, strerror (errno));
+              continue;
+            }
+          tza->tz = tz;
+        }
+
+      setting = tza->setting ? tza->setting : "UTC0";
+
+      if (!localtime_rz (tz, &LT[i].t, &tm))
+        {
+          fail = 1;
+          printf ("%s: %ld: localtime_rz: %s\n", setting, lt,
+                  strerror (errno));
+          continue;
+        }
+
+      n = nstrftime (buf, sizeof buf, format, &tm, tz, 0);
+      if (n == 0)
+        {
+          fail = 1;
+          printf ("%s: %ld: nstrftime failed\n", setting, lt);
+          continue;
+        }
+
+      if (! (STREQ (buf, LT[i].exp)
+             || (!tz && n == strlen (LT[i].exp)
+                 && memcmp (buf, LT[i].exp, n - sizeof "(GMT)" + 1) == 0
+                 && STREQ (buf + n - sizeof "(GMT)" + 1, "(GMT)"))))
+        {
+          /* Don't fail for unhandled dst in ahistorical entries,
+             as gnulib doesn't currently fix that issue, seen on Darwin 14.  */
+          if (!LT[i].ahistorical || tm.tm_isdst)
+            fail = 1;
+          printf ("%s: expected \"%s\", got \"%s\"\n",
+                  setting, LT[i].exp, buf);
+        }
+    }
+
+  return fail;
+}
+
+
+static int
+quarter_test (void)
+{
+  int result = 0;
+  size_t mon;
+
+  /* Check %q.  */
+  for (mon = 1; mon <= 12; mon++)
+    {
+      char out[2];
+      char exp[2] = {0,};
+      struct tm qtm = { .tm_mon = mon - 1 };
+      char fmt[3] = {'%','q','\0'};
+
+      size_t r = nstrftime (out, sizeof (out), fmt, &qtm, 0, 0);
+      if (r == 0)
+        {
+          puts ("nstrftime(\"%q\") failed");
+          result = 1;
+          break;
+        }
+
+      exp[0] = mon < 4 ? '1' : mon < 7 ? '2' : mon < 10 ? '3' : '4';
+      if (strcmp (out, exp) != 0)
+        {
+          printf ("nstrftime %%q: expected \"%s\", got \"%s\"\n", exp, out);
+          result = 1;
+          break;
+        }
+    }
+
+  return result;
+}
+
+int
+main (void)
+{
+  int fail = 0;
+  fail |= posixtm_test ();
+  fail |= tzalloc_test ();
+  fail |= quarter_test ();
+  return fail;
+}
+
+/*
+Local Variables:
+indent-tabs-mode: nil
+End:
+*/
diff --git a/gnulib-tests/test-once.c b/gnulib-tests/test-once.c
new file mode 100644
index 0000000..271bea4
--- /dev/null
+++ b/gnulib-tests/test-once.c
@@ -0,0 +1,43 @@
+/* Test of once-only execution in multithreaded situations.
+   Copyright (C) 2018-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2018.  */
+
+#include <config.h>
+
+#include "glthread/lock.h"
+
+#include "macros.h"
+
+gl_once_define(static, a_once)
+
+static int a;
+
+static void
+a_init (void)
+{
+  a = 42;
+}
+
+int
+main ()
+{
+  gl_once (a_once, a_init);
+
+  ASSERT (a == 42);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-open.c b/gnulib-tests/test-open.c
new file mode 100644
index 0000000..30d9764
--- /dev/null
+++ b/gnulib-tests/test-open.c
@@ -0,0 +1,41 @@
+/* Test of opening a file descriptor.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <fcntl.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (open, int, (char const *, int, ...));
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define BASE "test-open.t"
+
+#include "test-open.h"
+
+int
+main (void)
+{
+  return test_open (open, true);
+}
diff --git a/gnulib-tests/test-open.h b/gnulib-tests/test-open.h
new file mode 100644
index 0000000..c57054f
--- /dev/null
+++ b/gnulib-tests/test-open.h
@@ -0,0 +1,113 @@
+/* Test of opening a file descriptor.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+/* Make test_open always inline if we're using Fortify, which defines
+   __always_inline to do that.  Do nothing otherwise.  This works
+   around a glibc bug whereby 'open' cannot be used as a function
+   pointer when _FORTIFY_SOURCE is positive.  */
+
+#if __GLIBC__ && defined __always_inline
+# define ALWAYS_INLINE __always_inline
+#else
+# define ALWAYS_INLINE
+#endif
+
+/* This file is designed to test both open(n,buf[,mode]) and
+   openat(AT_FDCWD,n,buf[,mode]).  FUNC is the function to test.
+   Assumes that BASE and ASSERT are already defined, and that
+   appropriate headers are already included.  If PRINT, warn before
+   skipping symlink tests with status 77.  */
+
+static ALWAYS_INLINE int
+test_open (int (*func) (char const *, int, ...), bool print)
+{
+  int fd;
+
+  /* Remove anything from prior partial run.  */
+  unlink (BASE "file");
+  unlink (BASE "e.exe");
+  unlink (BASE "link");
+
+  /* Cannot create directory.  */
+  errno = 0;
+  ASSERT (func ("nonexist.ent/", O_CREAT | O_RDONLY, 0600) == -1);
+  ASSERT (errno == ENOTDIR || errno == EISDIR || errno == ENOENT
+          || errno == EINVAL);
+
+  /* Create a regular file.  */
+  fd = func (BASE "file", O_CREAT | O_RDONLY, 0600);
+  ASSERT (0 <= fd);
+  ASSERT (close (fd) == 0);
+
+  /* Create an executable regular file.  */
+  fd = func (BASE "e.exe", O_CREAT | O_RDONLY, 0700);
+  ASSERT (0 <= fd);
+  ASSERT (close (fd) == 0);
+
+  /* Trailing slash handling.  */
+  errno = 0;
+  ASSERT (func (BASE "file/", O_RDONLY) == -1);
+  ASSERT (errno == ENOTDIR || errno == EISDIR || errno == EINVAL);
+
+  /* Directories cannot be opened for writing.  */
+  errno = 0;
+  ASSERT (func (".", O_WRONLY) == -1);
+  ASSERT (errno == EISDIR || errno == EACCES);
+
+  /* /dev/null must exist, and be writable.  */
+  fd = func ("/dev/null", O_RDONLY);
+  ASSERT (0 <= fd);
+  {
+    char c;
+    ASSERT (read (fd, &c, 1) == 0);
+  }
+  ASSERT (close (fd) == 0);
+  fd = func ("/dev/null", O_WRONLY);
+  ASSERT (0 <= fd);
+  ASSERT (write (fd, "c", 1) == 1);
+  ASSERT (close (fd) == 0);
+
+  /* Although O_NONBLOCK on regular files can be ignored, it must not
+     cause a failure.  */
+  fd = func (BASE "file", O_NONBLOCK | O_RDONLY);
+  ASSERT (0 <= fd);
+  ASSERT (close (fd) == 0);
+
+  /* Symlink handling, where supported.  */
+  if (symlink (BASE "file", BASE "link") != 0)
+    {
+      ASSERT (unlink (BASE "file") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  errno = 0;
+  ASSERT (func (BASE "link/", O_RDONLY) == -1);
+  ASSERT (errno == ENOTDIR);
+  fd = func (BASE "link", O_RDONLY);
+  ASSERT (0 <= fd);
+  ASSERT (close (fd) == 0);
+
+  /* Cleanup.  */
+  ASSERT (unlink (BASE "file") == 0);
+  ASSERT (unlink (BASE "e.exe") == 0);
+  ASSERT (unlink (BASE "link") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-openat-safer.c b/gnulib-tests/test-openat-safer.c
new file mode 100644
index 0000000..dc98fbd
--- /dev/null
+++ b/gnulib-tests/test-openat-safer.c
@@ -0,0 +1,125 @@
+/* Test that openat_safer leave standard fds alone.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include "fcntl--.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+/* This test intentionally closes stderr.  So, we arrange to have fd 10
+   (outside the range of interesting fd's during the test) set up to
+   duplicate the original stderr.  */
+
+#define BACKUP_STDERR_FILENO 10
+#define ASSERT_STREAM myerr
+#include "macros.h"
+
+static FILE *myerr;
+
+#define witness "test-openat-safer.txt"
+
+int
+main (void)
+{
+  int i;
+  int j;
+  int dfd;
+  int fd;
+  char buf[2];
+
+  /* We close fd 2 later, so save it in fd 10.  */
+  if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO
+      || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL)
+    return 2;
+
+  /* Create handle for future use.  */
+  dfd = openat (AT_FDCWD, ".", O_RDONLY);
+  ASSERT (STDERR_FILENO < dfd);
+
+  /* Create file for later checks.  */
+  remove (witness);
+  fd = openat (dfd, witness, O_WRONLY | O_CREAT | O_EXCL, 0600);
+  ASSERT (STDERR_FILENO < fd);
+  ASSERT (write (fd, "hi", 2) == 2);
+  ASSERT (close (fd) == 0);
+
+  /* Four iterations, with progressively more standard descriptors
+     closed.  */
+  for (i = -1; i <= STDERR_FILENO; i++)
+    {
+      ASSERT (fchdir (dfd) == 0);
+      if (0 <= i)
+        ASSERT (close (i) == 0);
+
+      /* Execute once in ".", once in "..".  */
+      for (j = 0; j <= 1; j++)
+        {
+          if (j)
+            ASSERT (chdir ("..") == 0);
+
+          /* Check for error detection.  */
+          errno = 0;
+          ASSERT (openat (AT_FDCWD, "", O_RDONLY) == -1);
+          ASSERT (errno == ENOENT);
+          errno = 0;
+          ASSERT (openat (dfd, "", O_RDONLY) == -1);
+          ASSERT (errno == ENOENT);
+          errno = 0;
+          ASSERT (openat (-1, ".", O_RDONLY) == -1);
+          ASSERT (errno == EBADF);
+
+          /* Check for trailing slash and /dev/null handling.  */
+          errno = 0;
+          ASSERT (openat (dfd, "nonexist.ent/", O_CREAT | O_RDONLY,
+                          S_IRUSR | S_IWUSR) == -1);
+          ASSERT (errno == ENOTDIR || errno == EISDIR || errno == ENOENT
+                  || errno == EINVAL);
+          errno = 0;
+          ASSERT (openat (dfd, witness "/", O_RDONLY) == -1);
+          ASSERT (errno == ENOTDIR || errno == EISDIR || errno == EINVAL);
+#if defined __linux__ || defined __ANDROID__
+          /* Using a bad directory is okay for absolute paths.  */
+          fd = openat (-1, "/dev/null", O_WRONLY);
+          ASSERT (STDERR_FILENO < fd);
+#endif
+          /* Using a non-directory is wrong for relative paths.  */
+          errno = 0;
+          fd = open ("/dev/null", O_RDONLY);
+          ASSERT (STDERR_FILENO < fd);
+          ASSERT (openat (fd, ".", O_RDONLY) == -1);
+          ASSERT (errno == EBADF || errno == ENOTDIR);
+          ASSERT (close (fd) == 0);
+
+          /* Check for our witness file.  */
+          fd = openat (dfd, witness, O_RDONLY | O_NOFOLLOW);
+          ASSERT (STDERR_FILENO < fd);
+          ASSERT (read (fd, buf, 2) == 2);
+          ASSERT (buf[0] == 'h' && buf[1] == 'i');
+          ASSERT (close (fd) == 0);
+        }
+    }
+  ASSERT (fchdir (dfd) == 0);
+  ASSERT (unlink (witness) == 0);
+  ASSERT (close (dfd) == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-openat.c b/gnulib-tests/test-openat.c
new file mode 100644
index 0000000..2d7d747
--- /dev/null
+++ b/gnulib-tests/test-openat.c
@@ -0,0 +1,99 @@
+/* Test that openat works.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <fcntl.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (openat, int, (int, char const *, int, ...));
+
+#include <errno.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define BASE "test-openat.t"
+
+#include "test-open.h"
+
+static int dfd = AT_FDCWD;
+
+/* Wrapper around openat to test open behavior.  */
+static int
+do_open (char const *name, int flags, ...)
+{
+  if (flags & O_CREAT)
+    {
+      mode_t mode = 0;
+      va_list arg;
+      va_start (arg, flags);
+
+      /* We have to use PROMOTED_MODE_T instead of mode_t, otherwise GCC 4
+         creates crashing code when 'mode_t' is smaller than 'int'.  */
+      mode = va_arg (arg, PROMOTED_MODE_T);
+
+      va_end (arg);
+      return openat (dfd, name, flags, mode);
+    }
+  return openat (dfd, name, flags);
+}
+
+int
+main (int argc _GL_UNUSED, char *argv[])
+{
+  int result;
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (openat (-1, "foo", O_RDONLY) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (openat (99, "foo", O_RDONLY) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Basic checks.  */
+  result = test_open (do_open, false);
+  dfd = open (".", O_RDONLY);
+  ASSERT (0 <= dfd);
+  ASSERT (test_open (do_open, false) == result);
+  ASSERT (close (dfd) == 0);
+
+  /* Check that even when *-safer modules are in use, plain openat can
+     land in fd 0.  Do this test last, since it is destructive to
+     stdin.  */
+  ASSERT (close (STDIN_FILENO) == 0);
+  ASSERT (openat (AT_FDCWD, ".", O_RDONLY) == STDIN_FILENO);
+  {
+    dfd = open (".", O_RDONLY);
+    ASSERT (STDIN_FILENO < dfd);
+    ASSERT (chdir ("..") == 0);
+    ASSERT (close (STDIN_FILENO) == 0);
+    ASSERT (openat (dfd, ".", O_RDONLY) == STDIN_FILENO);
+    ASSERT (close (dfd) == 0);
+  }
+  return result;
+}
diff --git a/gnulib-tests/test-parse-datetime.c b/gnulib-tests/test-parse-datetime.c
new file mode 100644
index 0000000..920c9ae
--- /dev/null
+++ b/gnulib-tests/test-parse-datetime.c
@@ -0,0 +1,452 @@
+/* Test of parse_datetime() function.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson <simon@josefsson.org>, 2008.  */
+
+#include <config.h>
+
+#include "parse-datetime.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+#ifdef DEBUG
+#define LOG(str, now, res)                                              \
+  printf ("string '%s' diff %d %d\n",                                 \
+          str, res.tv_sec - now.tv_sec, res.tv_nsec - now.tv_nsec);
+#else
+#define LOG(str, now, res) (void) 0
+#endif
+
+static const char *const day_table[] =
+{
+  "SUNDAY",
+  "MONDAY",
+  "TUESDAY",
+  "WEDNESDAY",
+  "THURSDAY",
+  "FRIDAY",
+  "SATURDAY",
+  NULL
+};
+
+
+#if ! HAVE_TM_GMTOFF
+/* Shift A right by B bits portably, by dividing A by 2**B and
+   truncating towards minus infinity.  A and B should be free of side
+   effects, and B should be in the range 0 <= B <= INT_BITS - 2, where
+   INT_BITS is the number of useful bits in an int.  GNU code can
+   assume that INT_BITS is at least 32.
+
+   ISO C99 says that A >> B is implementation-defined if A < 0.  Some
+   implementations (e.g., UNICOS 9.0 on a Cray Y-MP EL) don't shift
+   right in the usual way when A < 0, so SHR falls back on division if
+   ordinary A >> B doesn't seem to be the usual signed shift.  */
+#define SHR(a, b)       \
+  (-1 >> 1 == -1        \
+   ? (a) >> (b)         \
+   : (a) / (1 << (b)) - ((a) % (1 << (b)) < 0))
+
+#define TM_YEAR_BASE 1900
+
+/* Yield the difference between *A and *B,
+   measured in seconds, ignoring leap seconds.
+   The body of this function is taken directly from the GNU C Library;
+   see src/strftime.c.  */
+static long int
+tm_diff (struct tm const *a, struct tm const *b)
+{
+  /* Compute intervening leap days correctly even if year is negative.
+     Take care to avoid int overflow in leap day calculations.  */
+  int a4 = SHR (a->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (a->tm_year & 3);
+  int b4 = SHR (b->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (b->tm_year & 3);
+  int a100 = a4 / 25 - (a4 % 25 < 0);
+  int b100 = b4 / 25 - (b4 % 25 < 0);
+  int a400 = SHR (a100, 2);
+  int b400 = SHR (b100, 2);
+  int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
+  long int ayear = a->tm_year;
+  long int years = ayear - b->tm_year;
+  long int days = (365 * years + intervening_leap_days
+                   + (a->tm_yday - b->tm_yday));
+  return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour))
+                + (a->tm_min - b->tm_min))
+          + (a->tm_sec - b->tm_sec));
+}
+#endif /* ! HAVE_TM_GMTOFF */
+
+static long
+gmt_offset (time_t s)
+{
+  long gmtoff;
+
+#if !HAVE_TM_GMTOFF
+  struct tm tm_local = *localtime (&s);
+  struct tm tm_gmt   = *gmtime (&s);
+
+  gmtoff = tm_diff (&tm_local, &tm_gmt);
+#else
+  gmtoff = localtime (&s)->tm_gmtoff;
+#endif
+
+  return gmtoff;
+}
+
+int
+main (int argc _GL_UNUSED, char **argv)
+{
+  struct timespec result;
+  struct timespec result2;
+  struct timespec expected;
+  struct timespec now;
+  const char *p;
+  int i;
+  long gmtoff;
+  time_t ref_time = 1304250918;
+
+  /* Set the time zone to US Eastern time with the 2012 rules.  This
+     should disable any leap second support.  Otherwise, there will be
+     a problem with glibc on sites that default to leap seconds; see
+     <https://bugs.gnu.org/12206>.  */
+  setenv ("TZ", "EST5EDT,M3.2.0,M11.1.0", 1);
+
+  gmtoff = gmt_offset (ref_time);
+
+
+  /* ISO 8601 extended date and time of day representation,
+     'T' separator, local time zone */
+  p = "2011-05-01T11:55:18";
+  expected.tv_sec = ref_time - gmtoff;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+  /* ISO 8601 extended date and time of day representation,
+     ' ' separator, local time zone */
+  p = "2011-05-01 11:55:18";
+  expected.tv_sec = ref_time - gmtoff;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+
+  /* ISO 8601, extended date and time of day representation,
+     'T' separator, UTC */
+  p = "2011-05-01T11:55:18Z";
+  expected.tv_sec = ref_time;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+  /* ISO 8601, extended date and time of day representation,
+     ' ' separator, UTC */
+  p = "2011-05-01 11:55:18Z";
+  expected.tv_sec = ref_time;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+
+  /* ISO 8601 extended date and time of day representation,
+     'T' separator, w/UTC offset */
+  p = "2011-05-01T11:55:18-07:00";
+  expected.tv_sec = 1304276118;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+  /* ISO 8601 extended date and time of day representation,
+     ' ' separator, w/UTC offset */
+  p = "2011-05-01 11:55:18-07:00";
+  expected.tv_sec = 1304276118;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+
+  /* ISO 8601 extended date and time of day representation,
+     'T' separator, w/hour only UTC offset */
+  p = "2011-05-01T11:55:18-07";
+  expected.tv_sec = 1304276118;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+  /* ISO 8601 extended date and time of day representation,
+     ' ' separator, w/hour only UTC offset */
+  p = "2011-05-01 11:55:18-07";
+  expected.tv_sec = 1304276118;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "now";
+  ASSERT (parse_datetime (&result, p, &now));
+  LOG (p, now, result);
+  ASSERT (now.tv_sec == result.tv_sec && now.tv_nsec == result.tv_nsec);
+
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "tomorrow";
+  ASSERT (parse_datetime (&result, p, &now));
+  LOG (p, now, result);
+  ASSERT (now.tv_sec + 24 * 60 * 60 == result.tv_sec
+          && now.tv_nsec == result.tv_nsec);
+
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "yesterday";
+  ASSERT (parse_datetime (&result, p, &now));
+  LOG (p, now, result);
+  ASSERT (now.tv_sec - 24 * 60 * 60 == result.tv_sec
+          && now.tv_nsec == result.tv_nsec);
+
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "4 hours";
+  ASSERT (parse_datetime (&result, p, &now));
+  LOG (p, now, result);
+  ASSERT (now.tv_sec + 4 * 60 * 60 == result.tv_sec
+          && now.tv_nsec == result.tv_nsec);
+
+  /* test if timezone is not being ignored for day offset */
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "UTC+400 +24 hours";
+  ASSERT (parse_datetime (&result, p, &now));
+  LOG (p, now, result);
+  p = "UTC+400 +1 day";
+  ASSERT (parse_datetime (&result2, p, &now));
+  LOG (p, now, result2);
+  ASSERT (result.tv_sec == result2.tv_sec
+          && result.tv_nsec == result2.tv_nsec);
+
+  /* test if several time zones formats are handled same way */
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "UTC+14:00";
+  ASSERT (parse_datetime (&result, p, &now));
+  LOG (p, now, result);
+  p = "UTC+14";
+  ASSERT (parse_datetime (&result2, p, &now));
+  LOG (p, now, result2);
+  ASSERT (result.tv_sec == result2.tv_sec
+          && result.tv_nsec == result2.tv_nsec);
+  p = "UTC+1400";
+  ASSERT (parse_datetime (&result2, p, &now));
+  LOG (p, now, result2);
+  ASSERT (result.tv_sec == result2.tv_sec
+          && result.tv_nsec == result2.tv_nsec);
+
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "UTC-14:00";
+  ASSERT (parse_datetime (&result, p, &now));
+  LOG (p, now, result);
+  p = "UTC-14";
+  ASSERT (parse_datetime (&result2, p, &now));
+  LOG (p, now, result2);
+  ASSERT (result.tv_sec == result2.tv_sec
+          && result.tv_nsec == result2.tv_nsec);
+  p = "UTC-1400";
+  ASSERT (parse_datetime (&result2, p, &now));
+  LOG (p, now, result2);
+  ASSERT (result.tv_sec == result2.tv_sec
+          && result.tv_nsec == result2.tv_nsec);
+
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "UTC+0:15";
+  ASSERT (parse_datetime (&result, p, &now));
+  LOG (p, now, result);
+  p = "UTC+0015";
+  ASSERT (parse_datetime (&result2, p, &now));
+  LOG (p, now, result2);
+  ASSERT (result.tv_sec == result2.tv_sec
+          && result.tv_nsec == result2.tv_nsec);
+
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "UTC-1:30";
+  ASSERT (parse_datetime (&result, p, &now));
+  LOG (p, now, result);
+  p = "UTC-130";
+  ASSERT (parse_datetime (&result2, p, &now));
+  LOG (p, now, result2);
+  ASSERT (result.tv_sec == result2.tv_sec
+          && result.tv_nsec == result2.tv_nsec);
+
+
+  /* TZ out of range should cause parse_datetime failure */
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "UTC+25:00";
+  ASSERT (!parse_datetime (&result, p, &now));
+
+        /* Check for several invalid countable dayshifts */
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "UTC+4:00 +40 yesterday";
+  ASSERT (!parse_datetime (&result, p, &now));
+  p = "UTC+4:00 next yesterday";
+  ASSERT (!parse_datetime (&result, p, &now));
+  p = "UTC+4:00 tomorrow ago";
+  ASSERT (!parse_datetime (&result, p, &now));
+  p = "UTC+4:00 tomorrow hence";
+  ASSERT (!parse_datetime (&result, p, &now));
+  p = "UTC+4:00 40 now ago";
+  ASSERT (!parse_datetime (&result, p, &now));
+  p = "UTC+4:00 last tomorrow";
+  ASSERT (!parse_datetime (&result, p, &now));
+  p = "UTC+4:00 -4 today";
+  ASSERT (!parse_datetime (&result, p, &now));
+
+  /* And check correct usage of dayshifts */
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "UTC+400 tomorrow";
+  ASSERT (parse_datetime (&result, p, &now));
+  LOG (p, now, result);
+  p = "UTC+400 +1 day";
+  ASSERT (parse_datetime (&result2, p, &now));
+  LOG (p, now, result2);
+  ASSERT (result.tv_sec == result2.tv_sec
+          && result.tv_nsec == result2.tv_nsec);
+  p = "UTC+400 1 day hence";
+  ASSERT (parse_datetime (&result2, p, &now));
+  LOG (p, now, result2);
+  ASSERT (result.tv_sec == result2.tv_sec
+          && result.tv_nsec == result2.tv_nsec);
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "UTC+400 yesterday";
+  ASSERT (parse_datetime (&result, p, &now));
+  LOG (p, now, result);
+  p = "UTC+400 1 day ago";
+  ASSERT (parse_datetime (&result2, p, &now));
+  LOG (p, now, result2);
+  ASSERT (result.tv_sec == result2.tv_sec
+          && result.tv_nsec == result2.tv_nsec);
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "UTC+400 now";
+  ASSERT (parse_datetime (&result, p, &now));
+  LOG (p, now, result);
+  p = "UTC+400 +0 minutes"; /* silly, but simple "UTC+400" is different*/
+  ASSERT (parse_datetime (&result2, p, &now));
+  LOG (p, now, result2);
+  ASSERT (result.tv_sec == result2.tv_sec
+          && result.tv_nsec == result2.tv_nsec);
+
+  /* Check that some "next Monday", "last Wednesday", etc. are correct.  */
+  setenv ("TZ", "UTC0", 1);
+  for (i = 0; day_table[i]; i++)
+    {
+      unsigned int thur2 = 7 * 24 * 3600; /* 2nd thursday */
+      char tmp[32];
+      sprintf (tmp, "NEXT %s", day_table[i]);
+      now.tv_sec = thur2 + 4711;
+      now.tv_nsec = 1267;
+      ASSERT (parse_datetime (&result, tmp, &now));
+      LOG (tmp, now, result);
+      ASSERT (result.tv_nsec == 0);
+      ASSERT (result.tv_sec == thur2 + (i == 4 ? 7 : (i + 3) % 7) * 24 * 3600);
+
+      sprintf (tmp, "LAST %s", day_table[i]);
+      now.tv_sec = thur2 + 4711;
+      now.tv_nsec = 1267;
+      ASSERT (parse_datetime (&result, tmp, &now));
+      LOG (tmp, now, result);
+      ASSERT (result.tv_nsec == 0);
+      ASSERT (result.tv_sec == thur2 + ((i + 3) % 7 - 7) * 24 * 3600);
+    }
+
+  p = "THURSDAY UTC+00";  /* The epoch was on Thursday.  */
+  now.tv_sec = 0;
+  now.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, &now));
+  LOG (p, now, result);
+  ASSERT (result.tv_sec == now.tv_sec
+          && result.tv_nsec == now.tv_nsec);
+
+  p = "FRIDAY UTC+00";
+  now.tv_sec = 0;
+  now.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, &now));
+  LOG (p, now, result);
+  ASSERT (result.tv_sec == 24 * 3600
+          && result.tv_nsec == now.tv_nsec);
+
+  /* Exercise a sign-extension bug.  Before July 2012, an input
+     starting with a high-bit-set byte would be treated like "0".  */
+  ASSERT ( ! parse_datetime (&result, "\xb0", &now));
+
+  /* Exercise TZ="" parsing code.  */
+  /* These two would infloop or segfault before Feb 2014.  */
+  ASSERT ( ! parse_datetime (&result, "TZ=\"\"\"", &now));
+  ASSERT ( ! parse_datetime (&result, "TZ=\"\" \"", &now));
+  /* Exercise invalid patterns.  */
+  ASSERT ( ! parse_datetime (&result, "TZ=\"", &now));
+  ASSERT ( ! parse_datetime (&result, "TZ=\"\\\"", &now));
+  ASSERT ( ! parse_datetime (&result, "TZ=\"\\n", &now));
+  ASSERT ( ! parse_datetime (&result, "TZ=\"\\n\"", &now));
+  /* Exercise valid patterns.  */
+  ASSERT (   parse_datetime (&result, "TZ=\"\"", &now));
+  ASSERT (   parse_datetime (&result, "TZ=\"\" ", &now));
+  ASSERT (   parse_datetime (&result, " TZ=\"\"", &now));
+  ASSERT (   parse_datetime (&result, "TZ=\"\\\\\"", &now));
+  ASSERT (   parse_datetime (&result, "TZ=\"\\\"\"", &now));
+
+  /* Outlandishly-long time zone abbreviations should not cause problems.  */
+  {
+    static char const bufprefix[] = "TZ=\"";
+    enum { tzname_len = 2000 };
+    static char const bufsuffix[] = "0\" 1970-01-01 01:02:03.123456789";
+    enum { bufsize = sizeof bufprefix - 1 + tzname_len + sizeof bufsuffix };
+    char buf[bufsize];
+    memcpy (buf, bufprefix, sizeof bufprefix - 1);
+    memset (buf + sizeof bufprefix - 1, 'X', tzname_len);
+    strcpy (buf + bufsize - sizeof bufsuffix, bufsuffix);
+    ASSERT (parse_datetime (&result, buf, &now));
+    LOG (buf, now, result);
+    ASSERT (result.tv_sec == 1 * 60 * 60 + 2 * 60 + 3
+            && result.tv_nsec == 123456789);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-pathmax.c b/gnulib-tests/test-pathmax.c
new file mode 100644
index 0000000..3c4bd56
--- /dev/null
+++ b/gnulib-tests/test-pathmax.c
@@ -0,0 +1,32 @@
+/* Test of "pathmax.h".
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include "pathmax.h"
+
+/* Check that PATH_MAX is a constant if it is defined.  */
+#ifdef PATH_MAX
+int a = PATH_MAX;
+#endif
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-perror.c b/gnulib-tests/test-perror.c
new file mode 100644
index 0000000..a6263f2
--- /dev/null
+++ b/gnulib-tests/test-perror.c
@@ -0,0 +1,36 @@
+/* Test of perror() function.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (perror, void, (char const *));
+
+#include <errno.h>
+
+int
+main (int argc, char **argv)
+{
+  const char *prefix = (argc > 1 ? argv[1] : NULL);
+
+  errno = EACCES;    perror (prefix);
+  errno = ETIMEDOUT; perror (prefix);
+  errno = EOVERFLOW; perror (prefix);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-perror.sh b/gnulib-tests/test-perror.sh
new file mode 100755
index 0000000..e776609
--- /dev/null
+++ b/gnulib-tests/test-perror.sh
@@ -0,0 +1,26 @@
+#!/bin/sh
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+# Test NULL prefix. Result should not contain a number, except in lines that
+# start with 'EDC' (IBM z/OS libc produces an error identifier before the
+# error message).
+${CHECKER} test-perror 2>&1 >/dev/null | LC_ALL=C tr -d '\r' > t-perror.tmp
+grep -v '^EDC' t-perror.tmp | grep '[0-9]' > /dev/null \
+  && fail_ "result should not contain a number"
+
+# Test empty prefix. Result should be the same.
+${CHECKER} test-perror '' 2>&1 >/dev/null | LC_ALL=C tr -d '\r' > t-perror1.tmp
+diff t-perror.tmp t-perror1.tmp \
+  || fail_ "empty prefix should behave like NULL argument"
+
+# Test non-empty prefix.
+${CHECKER} test-perror foo 2>&1 >/dev/null | LC_ALL=C tr -d '\r' > t-perror3.tmp
+sed -e 's/^/foo: /' < t-perror.tmp > t-perror2.tmp
+diff t-perror2.tmp t-perror3.tmp || fail_ "prefix applied incorrectly"
+
+# Test exit status.
+${CHECKER} test-perror >out 2>/dev/null || fail_ "unexpected exit status"
+test -s out && fail_ "unexpected output"
+
+Exit 0
diff --git a/gnulib-tests/test-perror2.c b/gnulib-tests/test-perror2.c
new file mode 100644
index 0000000..1d14eda
--- /dev/null
+++ b/gnulib-tests/test-perror2.c
@@ -0,0 +1,136 @@
+/* Test of perror() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+/* This test intentionally parses stderr.  So, we arrange to have fd 10
+   (outside the range of interesting fd's during the test) set up to
+   duplicate the original stderr.  */
+#define BACKUP_STDERR_FILENO 10
+#define ASSERT_STREAM myerr
+#include "macros.h"
+
+static FILE *myerr;
+
+#define BASE "test-perror2"
+
+int
+main (void)
+{
+  /* We change fd 2 later, so save it in fd 10.  */
+  if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO
+      || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL)
+    return 2;
+
+  ASSERT (freopen (BASE ".tmp", "w+", stderr) == stderr);
+
+  /* Test that perror does not clobber strerror buffer.  */
+  {
+    const char *msg1;
+    const char *msg2;
+    const char *msg3;
+    const char *msg4;
+    char *str1;
+    char *str2;
+    char *str3;
+    char *str4;
+
+    msg1 = strerror (ENOENT);
+    ASSERT (msg1);
+    str1 = strdup (msg1);
+    ASSERT (str1);
+
+    msg2 = strerror (ERANGE);
+    ASSERT (msg2);
+    str2 = strdup (msg2);
+    ASSERT (str2);
+
+    msg3 = strerror (-4);
+    ASSERT (msg3);
+    str3 = strdup (msg3);
+    ASSERT (str3);
+
+    msg4 = strerror (1729576);
+    ASSERT (msg4);
+    str4 = strdup (msg4);
+    ASSERT (str4);
+
+    errno = EACCES;
+    perror ("");
+    errno = -5;
+    perror ("");
+    ASSERT (!ferror (stderr));
+    ASSERT (msg1 == msg2 || msg1 == msg4 || STREQ (msg1, str1));
+    ASSERT (msg2 == msg4 || STREQ (msg2, str2));
+    ASSERT (msg3 == msg4 || STREQ (msg3, str3));
+    ASSERT (STREQ (msg4, str4));
+
+    free (str1);
+    free (str2);
+    free (str3);
+    free (str4);
+  }
+
+  /* Test that perror uses the same message as strerror.  */
+  {
+    int errs[] = { EACCES, 0, -3, };
+    int i;
+    for (i = 0; i < SIZEOF (errs); i++)
+      {
+        char buf[256];
+        char *err = strerror (errs[i]);
+
+        ASSERT (err);
+        ASSERT (strlen (err) < sizeof buf);
+        rewind (stderr);
+        ASSERT (ftruncate (fileno (stderr), 0) == 0);
+        errno = errs[i];
+        perror (NULL);
+        ASSERT (!ferror (stderr));
+        rewind (stderr);
+        ASSERT (fgets (buf, sizeof buf, stderr) == buf);
+        ASSERT (strstr (buf, err));
+      }
+  }
+
+  /* Test that perror reports write failure.  */
+  {
+    ASSERT (freopen (BASE ".tmp", "r", stderr) == stderr);
+    ASSERT (setvbuf (stderr, NULL, _IONBF, BUFSIZ) == 0);
+    errno = -1;
+    ASSERT (!ferror (stderr));
+    perror (NULL);
+#if 0
+    /* Commented out until cygwin behaves:
+       https://sourceware.org/ml/newlib/2011/msg00228.html */
+    ASSERT (errno > 0);
+    /* Commented out until glibc behaves:
+       https://sourceware.org/bugzilla/show_bug.cgi?id=12792 */
+    ASSERT (ferror (stderr));
+#endif
+  }
+
+  ASSERT (fclose (stderr) == 0);
+  ASSERT (remove (BASE ".tmp") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-pipe.c b/gnulib-tests/test-pipe.c
new file mode 100644
index 0000000..36ff480
--- /dev/null
+++ b/gnulib-tests/test-pipe.c
@@ -0,0 +1,108 @@
+/* Test of pipe.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (pipe, int, (int[2]));
+
+#include <fcntl.h>
+#include <stdbool.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+#endif
+
+#include "binary-io.h"
+#include "macros.h"
+
+/* Return true if FD is open.  */
+static bool
+is_open (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
+#else
+# ifndef F_GETFL
+#  error Please port fcntl to your platform
+# endif
+  return 0 <= fcntl (fd, F_GETFL);
+#endif
+}
+
+/* Return true if FD is not inherited to child processes.  */
+static bool
+is_cloexec (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  DWORD flags;
+  ASSERT (GetHandleInformation (h, &flags));
+  return (flags & HANDLE_FLAG_INHERIT) == 0;
+#else
+  int flags;
+  ASSERT ((flags = fcntl (fd, F_GETFD)) >= 0);
+  return (flags & FD_CLOEXEC) != 0;
+#endif
+}
+
+/* Return true if FD is in non-blocking mode.  */
+static bool
+is_nonblocking (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* We don't use the non-blocking mode for sockets here.  */
+  return 0;
+#else
+  int flags;
+  ASSERT ((flags = fcntl (fd, F_GETFL)) >= 0);
+  return (flags & O_NONBLOCK) != 0;
+#endif
+}
+
+int
+main ()
+{
+  int fd[2];
+
+  fd[0] = -1;
+  fd[1] = -1;
+  ASSERT (pipe (fd) >= 0);
+  ASSERT (fd[0] >= 0);
+  ASSERT (fd[1] >= 0);
+  ASSERT (fd[0] != fd[1]);
+  ASSERT (is_open (fd[0]));
+  ASSERT (is_open (fd[1]));
+  ASSERT (!is_cloexec (fd[0]));
+  ASSERT (!is_cloexec (fd[1]));
+  ASSERT (!is_nonblocking (fd[0]));
+  ASSERT (!is_nonblocking (fd[1]));
+
+  return 0;
+}
diff --git a/gnulib-tests/test-pipe2.c b/gnulib-tests/test-pipe2.c
new file mode 100644
index 0000000..0c08b0d
--- /dev/null
+++ b/gnulib-tests/test-pipe2.c
@@ -0,0 +1,147 @@
+/* Test of pipe2.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (pipe2, int, (int[2], int));
+
+#include <fcntl.h>
+#include <stdbool.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+#endif
+
+#include "binary-io.h"
+#include "macros.h"
+#if GNULIB_NONBLOCKING
+# include "nonblocking.h"
+#endif
+
+/* Return true if FD is open.  */
+static bool
+is_open (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
+#else
+# ifndef F_GETFL
+#  error Please port fcntl to your platform
+# endif
+  return 0 <= fcntl (fd, F_GETFL);
+#endif
+}
+
+/* Return true if FD is not inherited to child processes.  */
+static bool
+is_cloexec (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  DWORD flags;
+  ASSERT (GetHandleInformation (h, &flags));
+  return (flags & HANDLE_FLAG_INHERIT) == 0;
+#else
+  int flags;
+  ASSERT ((flags = fcntl (fd, F_GETFD)) >= 0);
+  return (flags & FD_CLOEXEC) != 0;
+#endif
+}
+
+#if ! GNULIB_NONBLOCKING
+static int
+get_nonblocking_flag (int fd)
+{
+# if defined _WIN32 && ! defined __CYGWIN__
+  return 0;
+# else
+#  ifndef F_GETFL
+#   error Please port fcntl to your platform
+#  endif
+  int flags;
+  ASSERT ((flags = fcntl (fd, F_GETFL)) >= 0);
+  return (flags & O_NONBLOCK) != 0;
+# endif
+}
+#endif
+
+int
+main ()
+{
+  int use_nonblocking;
+  int use_cloexec;
+
+  for (use_nonblocking = 0; use_nonblocking <= !!O_NONBLOCK; use_nonblocking++)
+    for (use_cloexec = 0; use_cloexec <= !!O_CLOEXEC; use_cloexec++)
+      {
+        int o_flags;
+        int fd[2];
+
+        o_flags = 0;
+        if (use_nonblocking)
+          o_flags |= O_NONBLOCK;
+        if (use_cloexec)
+          o_flags |= O_CLOEXEC;
+
+        fd[0] = -1;
+        fd[1] = -1;
+        ASSERT (pipe2 (fd, o_flags) >= 0);
+        ASSERT (fd[0] >= 0);
+        ASSERT (fd[1] >= 0);
+        ASSERT (fd[0] != fd[1]);
+        ASSERT (is_open (fd[0]));
+        ASSERT (is_open (fd[1]));
+        if (use_cloexec)
+          {
+            ASSERT (is_cloexec (fd[0]));
+            ASSERT (is_cloexec (fd[1]));
+          }
+        else
+          {
+            ASSERT (!is_cloexec (fd[0]));
+            ASSERT (!is_cloexec (fd[1]));
+          }
+        if (use_nonblocking)
+          {
+            ASSERT (get_nonblocking_flag (fd[0]) == 1);
+            ASSERT (get_nonblocking_flag (fd[1]) == 1);
+          }
+        else
+          {
+            ASSERT (get_nonblocking_flag (fd[0]) == 0);
+            ASSERT (get_nonblocking_flag (fd[1]) == 0);
+          }
+
+        ASSERT (close (fd[0]) == 0);
+        ASSERT (close (fd[1]) == 0);
+      }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-posixtm.c b/gnulib-tests/test-posixtm.c
new file mode 100644
index 0000000..d9972a6
--- /dev/null
+++ b/gnulib-tests/test-posixtm.c
@@ -0,0 +1,191 @@
+/* Test that posixtime works as required.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <config.h>
+
+#include "posixtm.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <time.h>
+
+#include "intprops.h"
+#include "macros.h"
+
+struct posixtm_test
+{
+  char const *in;
+  unsigned int syntax_bits;
+  bool valid;
+  int_least64_t t_expected;
+};
+
+/* Test mainly with syntax_bits == LY.  */
+enum { LY = PDS_CENTURY | PDS_SECONDS };
+
+static struct posixtm_test const T[] =
+  {
+    /* no year specified; cross-check via another posixtime call */
+    { "12131415.16",     LY, 1,            0}, /* ??? Dec 13 14:15:16 ???? */
+    { "12131415",        LY, 1,            0}, /* ??? Dec 13 14:15:00 ???? */
+
+    /* These two tests fail on 64-bit Solaris up through at least
+       Solaris 10, which is off by one day for timestamps before
+       0001-01-01 00:00:00 UTC.  */
+    { "000001010000.00", LY, 1,
+                      - INT64_C (62167219200)},/* Sat Jan  1 00:00:00 0    */
+    { "000012312359.59", LY, 1,
+                      - INT64_C (62135596801)},/* Fri Dec 31 23:59:59 0    */
+
+    { "000101010000.00", LY, 1,
+                      - INT64_C (62135596800)},/* Sat Jan  1 00:00:00 1    */
+    { "190112132045.51", LY, 1,
+                       - INT64_C (2147483649)},/* Fri Dec 13 20:45:51 1901 */
+    { "190112132045.52", LY, 1,
+                       - INT64_C (2147483648)},/* Fri Dec 13 20:45:52 1901 */
+    { "190112132045.53", LY, 1,  -2147483647}, /* Fri Dec 13 20:45:53 1901 */
+    { "190112132046.52", LY, 1,  -2147483588}, /* Fri Dec 13 20:46:52 1901 */
+    { "190112132145.52", LY, 1,  -2147480048}, /* Fri Dec 13 21:45:52 1901 */
+    { "190112142045.52", LY, 1,  -2147397248}, /* Sat Dec 14 20:45:52 1901 */
+    { "190201132045.52", LY, 1,  -2144805248}, /* Mon Jan 13 20:45:52 1902 */
+    { "196912312359.59", LY, 1,           -1}, /* Wed Dec 31 23:59:59 1969 */
+    { "197001010000.00", LY, 1,            0}, /* Thu Jan  1 00:00:00 1970 */
+    { "197001010000.01", LY, 1,            1}, /* Thu Jan  1 00:00:01 1970 */
+    { "197001010001.00", LY, 1,           60}, /* Thu Jan  1 00:01:00 1970 */
+    { "197001010000.60", LY, 1,           60}, /* Thu Jan  1 00:01:00 1970 */
+    { "197001010100.00", LY, 1,         3600}, /* Thu Jan  1 01:00:00 1970 */
+    { "197001020000.00", LY, 1,        86400}, /* Fri Jan  2 00:00:00 1970 */
+    { "197002010000.00", LY, 1,      2678400}, /* Sun Feb  1 00:00:00 1970 */
+    { "197101010000.00", LY, 1,     31536000}, /* Fri Jan  1 00:00:00 1971 */
+    { "197001000000.00", LY, 0,            0}, /* -- */
+    { "197000010000.00", LY, 0,            0}, /* -- */
+    { "197001010060.00", LY, 0,            0}, /* -- */
+    { "197001012400.00", LY, 0,            0}, /* -- */
+    { "197001320000.00", LY, 0,            0}, /* -- */
+    { "197013010000.00", LY, 0,            0}, /* -- */
+    { "203801190314.06", LY, 1,   2147483646}, /* Tue Jan 19 03:14:06 2038 */
+    { "203801190314.07", LY, 1,   2147483647}, /* Tue Jan 19 03:14:07 2038 */
+    { "203801190314.08", LY, 1,
+                       INT64_C (  2147483648)},/* Tue Jan 19 03:14:08 2038 */
+    { "999912312359.59", LY, 1,
+                       INT64_C (253402300799)},/* Fri Dec 31 23:59:59 9999 */
+    { "1112131415",      LY, 1,   1323785700}, /* Tue Dec 13 14:15:00 2011 */
+    { "1112131415.16",   LY, 1,   1323785716}, /* Tue Dec 13 14:15:16 2011 */
+    { "201112131415.16", LY, 1,   1323785716}, /* Tue Dec 13 14:15:16 2011 */
+    { "191112131415.16", LY, 1,  -1831974284}, /* Wed Dec 13 14:15:16 1911 */
+    { "203712131415.16", LY, 1,   2144326516}, /* Sun Dec 13 14:15:16 2037 */
+    { "3712131415.16",   LY, 1,   2144326516}, /* Sun Dec 13 14:15:16 2037 */
+    { "6812131415.16",   LY, 1,
+                       INT64_C (  3122633716)},/* Thu Dec 13 14:15:16 2068 */
+    { "6912131415.16",   LY, 1,     -1590284}, /* Sat Dec 13 14:15:16 1969 */
+    { "7012131415.16",   LY, 1,     29945716}, /* Sun Dec 13 14:15:16 1970 */
+    { "1213141599",      PDS_TRAILING_YEAR,
+                             1,    945094500}, /* Mon Dec 13 14:15:00 1999 */
+    { "1213141500",      PDS_TRAILING_YEAR,
+                             1,    976716900}, /* Wed Dec 13 14:15:00 2000 */
+    { NULL,               0, 0,            0}
+  };
+
+int
+main (void)
+{
+  unsigned int i;
+  int fail = 0;
+  char curr_year_str[30];
+  struct tm *tm;
+  time_t t_now;
+  int err;
+  size_t n_bytes;
+
+  /* The above test data requires Universal Time, e.g., TZ="UTC0".  */
+  err = setenv ("TZ", "UTC0", 1);
+  ASSERT (err == 0);
+
+  t_now = time (NULL);
+  ASSERT (t_now != (time_t) -1);
+  tm = localtime (&t_now);
+  ASSERT (tm);
+  n_bytes = strftime (curr_year_str, sizeof curr_year_str, "%Y", tm);
+  ASSERT (0 < n_bytes);
+
+  for (i = 0; T[i].in; i++)
+    {
+      time_t t_out;
+      time_t t_exp;
+      bool ok;
+
+      /* Some tests assume that time_t is signed.
+         If it is unsigned and the result is negative, skip the test. */
+      if (T[i].t_expected < 0 && ! TYPE_SIGNED (time_t))
+        {
+          printf ("skipping %s: result is negative, "
+                  "but your time_t is unsigned\n", T[i].in);
+          continue;
+        }
+
+      if (! (TYPE_MINIMUM (time_t) <= T[i].t_expected
+             && T[i].t_expected <= TYPE_MAXIMUM (time_t)))
+        {
+          printf ("skipping %s: result is out of range of your time_t\n",
+                  T[i].in);
+          continue;
+        }
+
+      t_exp = T[i].t_expected;
+
+      /* If an input string does not specify the year number, determine
+         the expected output by calling posixtime with an otherwise
+         equivalent string that starts with the current year.  */
+      if (8 <= strlen (T[i].in)
+          && (T[i].in[8] == '.' || T[i].in[8] == '\0'))
+        {
+          char tmp_buf[20];
+          stpcpy (stpcpy (tmp_buf, curr_year_str), T[i].in);
+          ASSERT (posixtime (&t_exp, tmp_buf, T[i].syntax_bits));
+        }
+
+      ok = posixtime (&t_out, T[i].in, T[i].syntax_bits);
+      if (ok != !!T[i].valid)
+        {
+          printf ("%s return value mismatch: got %d, expected %d\n",
+                  T[i].in, !!ok, T[i].valid);
+          fail = 1;
+          continue;
+        }
+
+      if (!ok)
+        continue;
+
+      if (t_out != t_exp)
+        {
+          printf ("%s mismatch (-: actual; +:expected)\n-%12ld\n+%12ld\n",
+                  T[i].in, t_out, t_exp);
+          fail = 1;
+        }
+    }
+
+  return fail;
+}
+
+/*
+Local Variables:
+indent-tabs-mode: nil
+End:
+*/
diff --git a/gnulib-tests/test-printf-frexp.c b/gnulib-tests/test-printf-frexp.c
new file mode 100644
index 0000000..8bacb89
--- /dev/null
+++ b/gnulib-tests/test-printf-frexp.c
@@ -0,0 +1,119 @@
+/* Test of splitting a double into fraction and mantissa.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "printf-frexp.h"
+
+#include <float.h>
+
+#include "macros.h"
+
+static double
+my_ldexp (double x, int d)
+{
+  for (; d > 0; d--)
+    x *= 2.0;
+  for (; d < 0; d++)
+    x *= 0.5;
+  return x;
+}
+
+int
+main ()
+{
+  int i;
+  /* The use of 'volatile' guarantees that excess precision bits are dropped
+     when dealing with denormalized numbers.  It is necessary on x86 systems
+     where double-floats are not IEEE compliant by default, to avoid that the
+     results become platform and compiler option dependent.  'volatile' is a
+     portable alternative to gcc's -ffloat-store option.  */
+  volatile double x;
+
+  for (i = 1, x = 1.0; i <= DBL_MAX_EXP; i++, x *= 2.0)
+    {
+      int exp = -9999;
+      double mantissa = printf_frexp (x, &exp);
+      ASSERT (exp == i - 1);
+      ASSERT (mantissa == 1.0);
+    }
+  for (i = 1, x = 1.0; i >= DBL_MIN_EXP; i--, x *= 0.5)
+    {
+      int exp = -9999;
+      double mantissa = printf_frexp (x, &exp);
+      ASSERT (exp == i - 1);
+      ASSERT (mantissa == 1.0);
+    }
+  for (; i >= DBL_MIN_EXP - 100 && x > 0.0; i--, x *= 0.5)
+    {
+      int exp = -9999;
+      double mantissa = printf_frexp (x, &exp);
+      ASSERT (exp == DBL_MIN_EXP - 1);
+      ASSERT (mantissa == my_ldexp (1.0, i - DBL_MIN_EXP));
+    }
+
+  for (i = 1, x = 1.01; i <= DBL_MAX_EXP; i++, x *= 2.0)
+    {
+      int exp = -9999;
+      double mantissa = printf_frexp (x, &exp);
+      ASSERT (exp == i - 1);
+      ASSERT (mantissa == 1.01);
+    }
+  for (i = 1, x = 1.01; i >= DBL_MIN_EXP; i--, x *= 0.5)
+    {
+      int exp = -9999;
+      double mantissa = printf_frexp (x, &exp);
+      ASSERT (exp == i - 1);
+      ASSERT (mantissa == 1.01);
+    }
+  for (; i >= DBL_MIN_EXP - 100 && x > 0.0; i--, x *= 0.5)
+    {
+      int exp = -9999;
+      double mantissa = printf_frexp (x, &exp);
+      ASSERT (exp == DBL_MIN_EXP - 1);
+      ASSERT (mantissa >= my_ldexp (1.0, i - DBL_MIN_EXP));
+      ASSERT (mantissa <= my_ldexp (2.0, i - DBL_MIN_EXP));
+      ASSERT (mantissa == my_ldexp (x, - exp));
+    }
+
+  for (i = 1, x = 1.73205; i <= DBL_MAX_EXP; i++, x *= 2.0)
+    {
+      int exp = -9999;
+      double mantissa = printf_frexp (x, &exp);
+      ASSERT (exp == i - 1);
+      ASSERT (mantissa == 1.73205);
+    }
+  for (i = 1, x = 1.73205; i >= DBL_MIN_EXP; i--, x *= 0.5)
+    {
+      int exp = -9999;
+      double mantissa = printf_frexp (x, &exp);
+      ASSERT (exp == i - 1);
+      ASSERT (mantissa == 1.73205);
+    }
+  for (; i >= DBL_MIN_EXP - 100 && x > 0.0; i--, x *= 0.5)
+    {
+      int exp = -9999;
+      double mantissa = printf_frexp (x, &exp);
+      ASSERT (exp == DBL_MIN_EXP - 1);
+      ASSERT (mantissa >= my_ldexp (1.0, i - DBL_MIN_EXP));
+      ASSERT (mantissa <= my_ldexp (2.0, i - DBL_MIN_EXP));
+      ASSERT (mantissa == my_ldexp (x, - exp));
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-printf-frexpl.c b/gnulib-tests/test-printf-frexpl.c
new file mode 100644
index 0000000..f9b9318
--- /dev/null
+++ b/gnulib-tests/test-printf-frexpl.c
@@ -0,0 +1,134 @@
+/* Test of splitting a 'long double' into fraction and mantissa.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "printf-frexpl.h"
+
+#include <float.h>
+
+#include "fpucw.h"
+#include "macros.h"
+
+/* On MIPS IRIX machines, LDBL_MIN_EXP is -1021, but the smallest reliable
+   exponent for 'long double' is -964.  Similarly, on PowerPC machines,
+   LDBL_MIN_EXP is -1021, but the smallest reliable exponent for 'long double'
+   is -968.  For exponents below that, the precision may be truncated to the
+   precision used for 'double'.  */
+#ifdef __sgi
+# define MIN_NORMAL_EXP (LDBL_MIN_EXP + 57)
+# define MIN_SUBNORMAL_EXP MIN_NORMAL_EXP
+#elif defined __ppc || defined __ppc__ || defined __powerpc || defined __powerpc__
+# define MIN_NORMAL_EXP (LDBL_MIN_EXP + 53)
+# define MIN_SUBNORMAL_EXP MIN_NORMAL_EXP
+#else
+# define MIN_NORMAL_EXP LDBL_MIN_EXP
+# define MIN_SUBNORMAL_EXP (LDBL_MIN_EXP - 100)
+#endif
+
+static long double
+my_ldexp (long double x, int d)
+{
+  for (; d > 0; d--)
+    x *= 2.0L;
+  for (; d < 0; d++)
+    x *= 0.5L;
+  return x;
+}
+
+int
+main ()
+{
+  int i;
+  long double x;
+  DECL_LONG_DOUBLE_ROUNDING
+
+  BEGIN_LONG_DOUBLE_ROUNDING ();
+
+  for (i = 1, x = 1.0L; i <= LDBL_MAX_EXP; i++, x *= 2.0L)
+    {
+      int exp = -9999;
+      long double mantissa = printf_frexpl (x, &exp);
+      ASSERT (exp == i - 1);
+      ASSERT (mantissa == 1.0L);
+    }
+  for (i = 1, x = 1.0L; i >= MIN_NORMAL_EXP; i--, x *= 0.5L)
+    {
+      int exp = -9999;
+      long double mantissa = printf_frexpl (x, &exp);
+      ASSERT (exp == i - 1);
+      ASSERT (mantissa == 1.0L);
+    }
+  for (; i >= MIN_SUBNORMAL_EXP && x > 0.0L; i--, x *= 0.5L)
+    {
+      int exp = -9999;
+      long double mantissa = printf_frexpl (x, &exp);
+      ASSERT (exp == LDBL_MIN_EXP - 1);
+      ASSERT (mantissa == my_ldexp (1.0L, i - LDBL_MIN_EXP));
+    }
+
+  for (i = 1, x = 1.01L; i <= LDBL_MAX_EXP; i++, x *= 2.0L)
+    {
+      int exp = -9999;
+      long double mantissa = printf_frexpl (x, &exp);
+      ASSERT (exp == i - 1);
+      ASSERT (mantissa == 1.01L);
+    }
+  for (i = 1, x = 1.01L; i >= MIN_NORMAL_EXP; i--, x *= 0.5L)
+    {
+      int exp = -9999;
+      long double mantissa = printf_frexpl (x, &exp);
+      ASSERT (exp == i - 1);
+      ASSERT (mantissa == 1.01L);
+    }
+  for (; i >= MIN_SUBNORMAL_EXP && x > 0.0L; i--, x *= 0.5L)
+    {
+      int exp = -9999;
+      long double mantissa = printf_frexpl (x, &exp);
+      ASSERT (exp == LDBL_MIN_EXP - 1);
+      ASSERT (mantissa >= my_ldexp (1.0L, i - LDBL_MIN_EXP));
+      ASSERT (mantissa <= my_ldexp (2.0L, i - LDBL_MIN_EXP));
+      ASSERT (mantissa == my_ldexp (x, - exp));
+    }
+
+  for (i = 1, x = 1.73205L; i <= LDBL_MAX_EXP; i++, x *= 2.0L)
+    {
+      int exp = -9999;
+      long double mantissa = printf_frexpl (x, &exp);
+      ASSERT (exp == i - 1);
+      ASSERT (mantissa == 1.73205L);
+    }
+  for (i = 1, x = 1.73205L; i >= MIN_NORMAL_EXP; i--, x *= 0.5L)
+    {
+      int exp = -9999;
+      long double mantissa = printf_frexpl (x, &exp);
+      ASSERT (exp == i - 1);
+      ASSERT (mantissa == 1.73205L);
+    }
+  for (; i >= MIN_SUBNORMAL_EXP && x > 0.0L; i--, x *= 0.5L)
+    {
+      int exp = -9999;
+      long double mantissa = printf_frexpl (x, &exp);
+      ASSERT (exp == LDBL_MIN_EXP - 1);
+      ASSERT (mantissa >= my_ldexp (1.0L, i - LDBL_MIN_EXP));
+      ASSERT (mantissa <= my_ldexp (2.0L, i - LDBL_MIN_EXP));
+      ASSERT (mantissa == my_ldexp (x, - exp));
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-printf-posix.h b/gnulib-tests/test-printf-posix.h
new file mode 100644
index 0000000..5b08ebe
--- /dev/null
+++ b/gnulib-tests/test-printf-posix.h
@@ -0,0 +1,155 @@
+/* Test of POSIX compatible vsprintf() and sprintf() functions.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include "infinity.h"
+
+static void
+test_function (int (*my_printf) (const char *, ...))
+{
+  /* Here we don't test output that may be platform dependent.
+     The bulk of the tests is done as part of the 'vasnprintf-posix' module.  */
+
+  /* Test support of size specifiers as in C99.  */
+
+  my_printf ("%ju %d\n", (uintmax_t) 12345671, 33, 44, 55);
+
+  my_printf ("%zu %d\n", (size_t) 12345672, 33, 44, 55);
+
+  my_printf ("%tu %d\n", (ptrdiff_t) 12345673, 33, 44, 55);
+
+  /* Test the support of the 'a' and 'A' conversion specifier for hexadecimal
+     output of floating-point numbers.  */
+
+  /* Positive zero.  */
+  my_printf ("%a %d\n", 0.0, 33, 44, 55);
+
+  /* Positive infinity.  */
+  my_printf ("%a %d\n", Infinityd (), 33, 44, 55);
+
+  /* Negative infinity.  */
+  my_printf ("%a %d\n", - Infinityd (), 33, 44, 55);
+
+  /* FLAG_ZERO with infinite number.  */
+  /* "0000000inf 33" is not a valid result; see
+     <https://lists.gnu.org/r/bug-gnulib/2007-04/msg00107.html> */
+  my_printf ("%010a %d\n", Infinityd (), 33, 44, 55);
+
+  /* Test the support of the %f format directive.  */
+
+  /* A positive number.  */
+  my_printf ("%f %d\n", 12.75, 33, 44, 55);
+
+  /* A larger positive number.  */
+  my_printf ("%f %d\n", 1234567.0, 33, 44, 55);
+
+  /* A negative number.  */
+  my_printf ("%f %d\n", -0.03125, 33, 44, 55);
+
+  /* Positive zero.  */
+  my_printf ("%f %d\n", 0.0, 33, 44, 55);
+
+  /* FLAG_ZERO.  */
+  my_printf ("%015f %d\n", 1234.0, 33, 44, 55);
+
+  /* Precision.  */
+  my_printf ("%.f %d\n", 1234.0, 33, 44, 55);
+
+  /* Precision with no rounding.  */
+  my_printf ("%.2f %d\n", 999.95, 33, 44, 55);
+
+  /* Precision with rounding.  */
+  my_printf ("%.2f %d\n", 999.996, 33, 44, 55);
+
+  /* A positive number.  */
+  my_printf ("%Lf %d\n", 12.75L, 33, 44, 55);
+
+  /* A larger positive number.  */
+  my_printf ("%Lf %d\n", 1234567.0L, 33, 44, 55);
+
+  /* A negative number.  */
+  my_printf ("%Lf %d\n", -0.03125L, 33, 44, 55);
+
+  /* Positive zero.  */
+  my_printf ("%Lf %d\n", 0.0L, 33, 44, 55);
+
+  /* FLAG_ZERO.  */
+  my_printf ("%015Lf %d\n", 1234.0L, 33, 44, 55);
+
+  /* Precision.  */
+  my_printf ("%.Lf %d\n", 1234.0L, 33, 44, 55);
+
+  /* Precision with no rounding.  */
+  my_printf ("%.2Lf %d\n", 999.95L, 33, 44, 55);
+
+  /* Precision with rounding.  */
+  my_printf ("%.2Lf %d\n", 999.996L, 33, 44, 55);
+
+  /* Test the support of the %F format directive.  */
+
+  /* A positive number.  */
+  my_printf ("%F %d\n", 12.75, 33, 44, 55);
+
+  /* A larger positive number.  */
+  my_printf ("%F %d\n", 1234567.0, 33, 44, 55);
+
+  /* A negative number.  */
+  my_printf ("%F %d\n", -0.03125, 33, 44, 55);
+
+  /* Positive zero.  */
+  my_printf ("%F %d\n", 0.0, 33, 44, 55);
+
+  /* FLAG_ZERO.  */
+  my_printf ("%015F %d\n", 1234.0, 33, 44, 55);
+
+  /* Precision.  */
+  my_printf ("%.F %d\n", 1234.0, 33, 44, 55);
+
+  /* Precision with no rounding.  */
+  my_printf ("%.2F %d\n", 999.95, 33, 44, 55);
+
+  /* Precision with rounding.  */
+  my_printf ("%.2F %d\n", 999.996, 33, 44, 55);
+
+  /* A positive number.  */
+  my_printf ("%LF %d\n", 12.75L, 33, 44, 55);
+
+  /* A larger positive number.  */
+  my_printf ("%LF %d\n", 1234567.0L, 33, 44, 55);
+
+  /* A negative number.  */
+  my_printf ("%LF %d\n", -0.03125L, 33, 44, 55);
+
+  /* Positive zero.  */
+  my_printf ("%LF %d\n", 0.0L, 33, 44, 55);
+
+  /* FLAG_ZERO.  */
+  my_printf ("%015LF %d\n", 1234.0L, 33, 44, 55);
+
+  /* Precision.  */
+  my_printf ("%.LF %d\n", 1234.0L, 33, 44, 55);
+
+  /* Precision with no rounding.  */
+  my_printf ("%.2LF %d\n", 999.95L, 33, 44, 55);
+
+  /* Precision with rounding.  */
+  my_printf ("%.2LF %d\n", 999.996L, 33, 44, 55);
+
+  /* Test the support of the POSIX/XSI format strings with positions.  */
+
+  my_printf ("%2$d %1$d\n", 33, 55);
+}
diff --git a/gnulib-tests/test-printf-posix.output b/gnulib-tests/test-printf-posix.output
new file mode 100644
index 0000000..618825b
--- /dev/null
+++ b/gnulib-tests/test-printf-posix.output
@@ -0,0 +1,40 @@
+12345671 33
+12345672 33
+12345673 33
+0x0p+0 33
+inf 33
+-inf 33
+       inf 33
+12.750000 33
+1234567.000000 33
+-0.031250 33
+0.000000 33
+00001234.000000 33
+1234 33
+999.95 33
+1000.00 33
+12.750000 33
+1234567.000000 33
+-0.031250 33
+0.000000 33
+00001234.000000 33
+1234 33
+999.95 33
+1000.00 33
+12.750000 33
+1234567.000000 33
+-0.031250 33
+0.000000 33
+00001234.000000 33
+1234 33
+999.95 33
+1000.00 33
+12.750000 33
+1234567.000000 33
+-0.031250 33
+0.000000 33
+00001234.000000 33
+1234 33
+999.95 33
+1000.00 33
+55 33
diff --git a/gnulib-tests/test-priv-set.c b/gnulib-tests/test-priv-set.c
new file mode 100644
index 0000000..210cf1f
--- /dev/null
+++ b/gnulib-tests/test-priv-set.c
@@ -0,0 +1,88 @@
+/* Test the priv-set module.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by David Bartley <dtbartle@csclub.uwaterloo.ca>, 2007.  */
+
+#include <config.h>
+
+#include "priv-set.h"
+
+#if HAVE_GETPPRIV && HAVE_PRIV_H
+# include <priv.h>
+#endif
+#include <unistd.h>
+#include <errno.h>
+#include <sys/types.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+#if HAVE_GETPPRIV && HAVE_PRIV_H
+    priv_set_t *set;
+
+    ASSERT (set = priv_allocset ());
+    ASSERT (getppriv (PRIV_EFFECTIVE, set) == 0);
+    ASSERT (priv_ismember (set, PRIV_PROC_EXEC) == 1);
+
+    /* Do a series of removes and restores making sure that the results are
+       consistent with our ismember function and solaris' priv_ismember.  */
+    ASSERT (priv_set_ismember (PRIV_PROC_EXEC) == 1);
+        ASSERT (getppriv (PRIV_EFFECTIVE, set) == 0);
+        ASSERT (priv_ismember (set, PRIV_PROC_EXEC) == 1);
+    ASSERT (priv_set_restore (PRIV_PROC_EXEC) == -1);
+        ASSERT (errno == EINVAL);
+    ASSERT (priv_set_ismember (PRIV_PROC_EXEC) == 1);
+        ASSERT (getppriv (PRIV_EFFECTIVE, set) == 0);
+        ASSERT (priv_ismember (set, PRIV_PROC_EXEC) == 1);
+    ASSERT (priv_set_remove (PRIV_PROC_EXEC) == 0);
+    ASSERT (priv_set_ismember (PRIV_PROC_EXEC) == 0);
+        ASSERT (getppriv (PRIV_EFFECTIVE, set) == 0);
+        ASSERT (priv_ismember (set, PRIV_PROC_EXEC) == 0);
+    ASSERT (priv_set_remove (PRIV_PROC_EXEC) == -1);
+        ASSERT (errno == EINVAL);
+    ASSERT (priv_set_ismember (PRIV_PROC_EXEC) == 0);
+        ASSERT (getppriv (PRIV_EFFECTIVE, set) == 0);
+        ASSERT (priv_ismember (set, PRIV_PROC_EXEC) == 0);
+    ASSERT (priv_set_restore (PRIV_PROC_EXEC) == 0);
+    ASSERT (priv_set_ismember (PRIV_PROC_EXEC) == 1);
+        ASSERT (getppriv (PRIV_EFFECTIVE, set) == 0);
+        ASSERT (priv_ismember (set, PRIV_PROC_EXEC) == 1);
+    ASSERT (priv_set_restore (PRIV_PROC_EXEC) == -1);
+        ASSERT (errno == EINVAL);
+    ASSERT (priv_set_ismember (PRIV_PROC_EXEC) == 1);
+        ASSERT (getppriv (PRIV_EFFECTIVE, set) == 0);
+        ASSERT (priv_ismember (set, PRIV_PROC_EXEC) == 1);
+
+    /* Test the priv_set_linkdir wrappers.  */
+    ASSERT (getppriv (PRIV_EFFECTIVE, set) == 0);
+    if (priv_ismember (set, PRIV_SYS_LINKDIR))
+      {
+        ASSERT (priv_set_restore_linkdir () == -1);
+            ASSERT (errno == EINVAL);
+        ASSERT (priv_set_remove_linkdir () == 0);
+        ASSERT (priv_set_remove_linkdir () == -1);
+            ASSERT (errno == EINVAL);
+        ASSERT (priv_set_restore_linkdir () == 0);
+      }
+#else
+    ASSERT (priv_set_restore_linkdir () == -1);
+    ASSERT (priv_set_remove_linkdir () == -1);
+#endif
+
+    return 0;
+}
diff --git a/gnulib-tests/test-pthread-cond.c b/gnulib-tests/test-pthread-cond.c
new file mode 100644
index 0000000..dee37af
--- /dev/null
+++ b/gnulib-tests/test-pthread-cond.c
@@ -0,0 +1,238 @@
+/* Test of condition variables in multithreaded situations.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+
+/* Which tests to perform.
+   Uncomment some of these, to verify that all tests crash if no locking
+   is enabled.  */
+#define DO_TEST_COND 1
+#define DO_TEST_TIMEDCOND 1
+
+/* Whether to help the scheduler through explicit sched_yield().
+   Uncomment this to see if the operating system has a fair scheduler.  */
+#define EXPLICIT_YIELD 1
+
+/* Whether to print debugging messages.  */
+#define ENABLE_DEBUGGING 0
+
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/time.h>
+
+#if EXPLICIT_YIELD
+# include <sched.h>
+#endif
+
+#if HAVE_DECL_ALARM
+# include <signal.h>
+# include <unistd.h>
+#endif
+
+#include "macros.h"
+
+#if ENABLE_DEBUGGING
+# define dbgprintf printf
+#else
+# define dbgprintf if (0) printf
+#endif
+
+#if EXPLICIT_YIELD
+# define yield() sched_yield ()
+#else
+# define yield()
+#endif
+
+
+/*
+ * Condition check
+ */
+static int cond_value = 0;
+static pthread_cond_t condtest;
+static pthread_mutex_t lockcond;
+
+static void *
+pthread_cond_wait_routine (void *arg)
+{
+  ASSERT (pthread_mutex_lock (&lockcond) == 0);
+  while (!cond_value)
+    {
+      ASSERT (pthread_cond_wait (&condtest, &lockcond) == 0);
+    }
+  ASSERT (pthread_mutex_unlock (&lockcond) == 0);
+
+  cond_value = 2;
+
+  return NULL;
+}
+
+static void
+test_pthread_cond_wait ()
+{
+  struct timespec remain;
+  pthread_t thread;
+  int ret;
+
+  remain.tv_sec = 2;
+  remain.tv_nsec = 0;
+
+  cond_value = 0;
+
+  ASSERT (pthread_create (&thread, NULL, pthread_cond_wait_routine, NULL) == 0);
+  do
+    {
+      yield ();
+      ret = nanosleep (&remain, &remain);
+      ASSERT (ret >= -1);
+    }
+  while (ret == -1 && (remain.tv_sec != 0 || remain.tv_nsec != 0));
+
+  /* signal condition */
+  ASSERT (pthread_mutex_lock (&lockcond) == 0);
+  cond_value = 1;
+  ASSERT (pthread_cond_signal (&condtest) == 0);
+  ASSERT (pthread_mutex_unlock (&lockcond) == 0);
+
+  ASSERT (pthread_join (thread, NULL) == 0);
+
+  if (cond_value != 2)
+    abort ();
+}
+
+
+/*
+ * Timed Condition check
+ */
+static int cond_timeout;
+
+static void
+get_ts (struct timespec *ts)
+{
+  struct timeval now;
+
+  gettimeofday (&now, NULL);
+
+  ts->tv_sec = now.tv_sec + 1;
+  ts->tv_nsec = now.tv_usec * 1000;
+}
+
+static void *
+pthread_cond_timedwait_routine (void *arg)
+{
+  int ret;
+  struct timespec ts;
+
+  ASSERT (pthread_mutex_lock (&lockcond) == 0);
+  while (!cond_value)
+    {
+      get_ts (&ts);
+      ret = pthread_cond_timedwait (&condtest, &lockcond, &ts);
+      if (ret == ETIMEDOUT)
+        cond_timeout = 1;
+    }
+  ASSERT (pthread_mutex_unlock (&lockcond) == 0);
+
+  return NULL;
+}
+
+static void
+test_pthread_cond_timedwait (void)
+{
+  struct timespec remain;
+  pthread_t thread;
+  int ret;
+
+  remain.tv_sec = 2;
+  remain.tv_nsec = 0;
+
+  cond_value = cond_timeout = 0;
+
+  ASSERT (pthread_create (&thread, NULL, pthread_cond_timedwait_routine, NULL)
+          == 0);
+  do
+    {
+      yield ();
+      ret = nanosleep (&remain, &remain);
+      ASSERT (ret >= -1);
+    }
+  while (ret == -1 && (remain.tv_sec != 0 || remain.tv_nsec != 0));
+
+  /* signal condition */
+  ASSERT (pthread_mutex_lock (&lockcond) == 0);
+  cond_value = 1;
+  ASSERT (pthread_cond_signal (&condtest) == 0);
+  ASSERT (pthread_mutex_unlock (&lockcond) == 0);
+
+  ASSERT (pthread_join (thread, NULL) == 0);
+
+  if (!cond_timeout)
+    abort ();
+}
+
+int
+main ()
+{
+#if HAVE_DECL_ALARM
+  /* Declare failure if test takes too long, by using default abort
+     caused by SIGALRM.  */
+  int alarm_value = 600;
+  signal (SIGALRM, SIG_DFL);
+  alarm (alarm_value);
+#endif
+
+  ASSERT (pthread_cond_init (&condtest, NULL) == 0);
+
+  {
+    pthread_mutexattr_t attr;
+
+    ASSERT (pthread_mutexattr_init (&attr) == 0);
+    ASSERT (pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_NORMAL) == 0);
+    ASSERT (pthread_mutex_init (&lockcond, &attr) == 0);
+    ASSERT (pthread_mutexattr_destroy (&attr) == 0);
+  }
+
+#if DO_TEST_COND
+  printf ("Starting test_pthread_cond_wait ..."); fflush (stdout);
+  test_pthread_cond_wait ();
+  printf (" OK\n"); fflush (stdout);
+#endif
+#if DO_TEST_TIMEDCOND
+  printf ("Starting test_pthread_cond_timedwait ..."); fflush (stdout);
+  test_pthread_cond_timedwait ();
+  printf (" OK\n"); fflush (stdout);
+#endif
+
+  return 0;
+}
+
+#else
+
+/* No multithreading available.  */
+
+#include <stdio.h>
+
+int
+main ()
+{
+  fputs ("Skipping test: multithreading not enabled\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/gnulib-tests/test-pthread-mutex.c b/gnulib-tests/test-pthread-mutex.c
new file mode 100644
index 0000000..55eeb88
--- /dev/null
+++ b/gnulib-tests/test-pthread-mutex.c
@@ -0,0 +1,524 @@
+/* Test of locking in multithreaded situations.
+   Copyright (C) 2005, 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.  */
+
+#include <config.h>
+
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+
+/* Whether to enable locking.
+   Uncomment this to get a test program without locking, to verify that
+   it crashes.  */
+#define ENABLE_LOCKING 1
+
+/* Which tests to perform.
+   Uncomment some of these, to verify that all tests crash if no locking
+   is enabled.  */
+#define DO_TEST_LOCK 1
+#define DO_TEST_RECURSIVE_LOCK 1
+
+/* Whether to help the scheduler through explicit sched_yield().
+   Uncomment this to see if the operating system has a fair scheduler.  */
+#define EXPLICIT_YIELD 1
+
+/* Whether to use 'volatile' on some variables that communicate information
+   between threads.  If set to 0, a semaphore or a lock is used to protect
+   these variables.  If set to 1, 'volatile' is used; this is theoretically
+   equivalent but can lead to much slower execution (e.g. 30x slower total
+   run time on a 40-core machine), because 'volatile' does not imply any
+   synchronization/communication between different CPUs.  */
+#define USE_VOLATILE 0
+
+#if USE_POSIX_THREADS && HAVE_SEMAPHORE_H
+/* Whether to use a semaphore to communicate information between threads.
+   If set to 0, a lock is used. If set to 1, a semaphore is used.
+   Uncomment this to reduce the dependencies of this test.  */
+# define USE_SEMAPHORE 1
+/* Mac OS X provides only named semaphores (sem_open); its facility for
+   unnamed semaphores (sem_init) does not work.  */
+# if defined __APPLE__ && defined __MACH__
+#  define USE_NAMED_SEMAPHORE 1
+# else
+#  define USE_UNNAMED_SEMAPHORE 1
+# endif
+#endif
+
+/* Whether to print debugging messages.  */
+#define ENABLE_DEBUGGING 0
+
+/* Number of simultaneous threads.  */
+#define THREAD_COUNT 10
+
+/* Number of operations performed in each thread.
+   This is quite high, because with a smaller count, say 5000, we often get
+   an "OK" result even without ENABLE_LOCKING (on Linux/x86).  */
+#define REPEAT_COUNT 50000
+
+#include <pthread.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if EXPLICIT_YIELD
+# include <sched.h>
+#endif
+
+#if USE_SEMAPHORE
+# include <errno.h>
+# include <fcntl.h>
+# include <semaphore.h>
+# include <unistd.h>
+#endif
+
+#if HAVE_DECL_ALARM
+# include <signal.h>
+# include <unistd.h>
+#endif
+
+#include "macros.h"
+
+#if ENABLE_DEBUGGING
+# define dbgprintf printf
+#else
+# define dbgprintf if (0) printf
+#endif
+
+#if EXPLICIT_YIELD
+# define yield() sched_yield ()
+#else
+# define yield()
+#endif
+
+#if USE_VOLATILE
+struct atomic_int {
+  volatile int value;
+};
+static void
+init_atomic_int (struct atomic_int *ai)
+{
+}
+static int
+get_atomic_int_value (struct atomic_int *ai)
+{
+  return ai->value;
+}
+static void
+set_atomic_int_value (struct atomic_int *ai, int new_value)
+{
+  ai->value = new_value;
+}
+#elif USE_SEMAPHORE
+/* This atomic_int implementation can only support the values 0 and 1.
+   It is initially 0 and can be set to 1 only once.  */
+# if USE_UNNAMED_SEMAPHORE
+struct atomic_int {
+  sem_t semaphore;
+};
+#define atomic_int_semaphore(ai) (&(ai)->semaphore)
+static void
+init_atomic_int (struct atomic_int *ai)
+{
+  sem_init (&ai->semaphore, 0, 0);
+}
+# endif
+# if USE_NAMED_SEMAPHORE
+struct atomic_int {
+  sem_t *semaphore;
+};
+#define atomic_int_semaphore(ai) ((ai)->semaphore)
+static void
+init_atomic_int (struct atomic_int *ai)
+{
+  sem_t *s;
+  unsigned int count;
+  for (count = 0; ; count++)
+    {
+      char name[80];
+      /* Use getpid() in the name, so that different processes running at the
+         same time will not interfere.  Use ai in the name, so that different
+         atomic_int in the same process will not interfere.  Use a count in
+         the name, so that even in the (unlikely) case that a semaphore with
+         the specified name already exists, we can try a different name.  */
+      sprintf (name, "test-lock-%lu-%p-%u",
+               (unsigned long) getpid (), ai, count);
+      s = sem_open (name, O_CREAT | O_EXCL, 0600, 0);
+      if (s == SEM_FAILED)
+        {
+          if (errno == EEXIST)
+            /* Retry with a different name.  */
+            continue;
+          else
+            {
+              perror ("sem_open failed");
+              abort ();
+            }
+        }
+      else
+        {
+          /* Try not to leave a semaphore hanging around on the file system
+             eternally, if we can avoid it.  */
+          sem_unlink (name);
+          break;
+        }
+    }
+  ai->semaphore = s;
+}
+# endif
+static int
+get_atomic_int_value (struct atomic_int *ai)
+{
+  if (sem_trywait (atomic_int_semaphore (ai)) == 0)
+    {
+      if (sem_post (atomic_int_semaphore (ai)))
+        abort ();
+      return 1;
+    }
+  else if (errno == EAGAIN)
+    return 0;
+  else
+    abort ();
+}
+static void
+set_atomic_int_value (struct atomic_int *ai, int new_value)
+{
+  if (new_value == 0)
+    /* It's already initialized with 0.  */
+    return;
+  /* To set the value 1: */
+  if (sem_post (atomic_int_semaphore (ai)))
+    abort ();
+}
+#else
+struct atomic_int {
+  pthread_mutex_t lock;
+  int value;
+};
+static void
+init_atomic_int (struct atomic_int *ai)
+{
+  pthread_mutexattr_t attr;
+
+  ASSERT (pthread_mutexattr_init (&attr) == 0);
+  ASSERT (pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_NORMAL) == 0);
+  ASSERT (pthread_mutex_init (&ai->lock, &attr) == 0);
+  ASSERT (pthread_mutexattr_destroy (&attr) == 0);
+}
+static int
+get_atomic_int_value (struct atomic_int *ai)
+{
+  ASSERT (pthread_mutex_lock (&ai->lock) == 0);
+  int ret = ai->value;
+  ASSERT (pthread_mutex_unlock (&ai->lock) == 0);
+  return ret;
+}
+static void
+set_atomic_int_value (struct atomic_int *ai, int new_value)
+{
+  ASSERT (pthread_mutex_lock (&ai->lock) == 0);
+  ai->value = new_value;
+  ASSERT (pthread_mutex_unlock (&ai->lock) == 0);
+}
+#endif
+
+/* Returns a reference to the current thread as a pointer, for debugging.  */
+#if defined __MVS__
+  /* On IBM z/OS, pthread_t is a struct with an 8-byte '__' field.
+     The first three bytes of this field appear to uniquely identify a
+     pthread_t, though not necessarily representing a pointer.  */
+# define pthread_self_pointer() (*((void **) pthread_self ().__))
+#else
+# define pthread_self_pointer() ((void *) (uintptr_t) pthread_self ())
+#endif
+
+#define ACCOUNT_COUNT 4
+
+static int account[ACCOUNT_COUNT];
+
+static int
+random_account (void)
+{
+  return ((unsigned int) rand () >> 3) % ACCOUNT_COUNT;
+}
+
+static void
+check_accounts (void)
+{
+  int i, sum;
+
+  sum = 0;
+  for (i = 0; i < ACCOUNT_COUNT; i++)
+    sum += account[i];
+  if (sum != ACCOUNT_COUNT * 1000)
+    abort ();
+}
+
+
+/* ------------------- Test normal (non-recursive) locks ------------------- */
+
+/* Test normal locks by having several bank accounts and several threads
+   which shuffle around money between the accounts and another thread
+   checking that all the money is still there.  */
+
+static pthread_mutex_t my_lock;
+
+static void *
+lock_mutator_thread (void *arg)
+{
+  int repeat;
+
+  for (repeat = REPEAT_COUNT; repeat > 0; repeat--)
+    {
+      int i1, i2, value;
+
+      dbgprintf ("Mutator %p before lock\n", pthread_self_pointer ());
+      ASSERT (pthread_mutex_lock (&my_lock) == 0);
+      dbgprintf ("Mutator %p after  lock\n", pthread_self_pointer ());
+
+      i1 = random_account ();
+      i2 = random_account ();
+      value = ((unsigned int) rand () >> 3) % 10;
+      account[i1] += value;
+      account[i2] -= value;
+
+      dbgprintf ("Mutator %p before unlock\n", pthread_self_pointer ());
+      ASSERT (pthread_mutex_unlock (&my_lock) == 0);
+      dbgprintf ("Mutator %p after  unlock\n", pthread_self_pointer ());
+
+      dbgprintf ("Mutator %p before check lock\n", pthread_self_pointer ());
+      ASSERT (pthread_mutex_lock (&my_lock) == 0);
+      check_accounts ();
+      ASSERT (pthread_mutex_unlock (&my_lock) == 0);
+      dbgprintf ("Mutator %p after  check unlock\n", pthread_self_pointer ());
+
+      yield ();
+    }
+
+  dbgprintf ("Mutator %p dying.\n", pthread_self_pointer ());
+  return NULL;
+}
+
+static struct atomic_int lock_checker_done;
+
+static void *
+lock_checker_thread (void *arg)
+{
+  while (get_atomic_int_value (&lock_checker_done) == 0)
+    {
+      dbgprintf ("Checker %p before check lock\n", pthread_self_pointer ());
+      ASSERT (pthread_mutex_lock (&my_lock) == 0);
+      check_accounts ();
+      ASSERT (pthread_mutex_unlock (&my_lock) == 0);
+      dbgprintf ("Checker %p after  check unlock\n", pthread_self_pointer ());
+
+      yield ();
+    }
+
+  dbgprintf ("Checker %p dying.\n", pthread_self_pointer ());
+  return NULL;
+}
+
+static void
+test_pthread_mutex_normal (void)
+{
+  int i;
+  pthread_t checkerthread;
+  pthread_t threads[THREAD_COUNT];
+
+  /* Initialization.  */
+  for (i = 0; i < ACCOUNT_COUNT; i++)
+    account[i] = 1000;
+  init_atomic_int (&lock_checker_done);
+  set_atomic_int_value (&lock_checker_done, 0);
+
+  /* Spawn the threads.  */
+  ASSERT (pthread_create (&checkerthread, NULL, lock_checker_thread, NULL)
+          == 0);
+  for (i = 0; i < THREAD_COUNT; i++)
+    ASSERT (pthread_create (&threads[i], NULL, lock_mutator_thread, NULL) == 0);
+
+  /* Wait for the threads to terminate.  */
+  for (i = 0; i < THREAD_COUNT; i++)
+    ASSERT (pthread_join (threads[i], NULL) == 0);
+  set_atomic_int_value (&lock_checker_done, 1);
+  ASSERT (pthread_join (checkerthread, NULL) == 0);
+  check_accounts ();
+}
+
+
+/* -------------------------- Test recursive locks -------------------------- */
+
+/* Test recursive locks by having several bank accounts and several threads
+   which shuffle around money between the accounts (recursively) and another
+   thread checking that all the money is still there.  */
+
+static pthread_mutex_t my_reclock;
+
+static void
+recshuffle (void)
+{
+  int i1, i2, value;
+
+  dbgprintf ("Mutator %p before lock\n", pthread_self_pointer ());
+  ASSERT (pthread_mutex_lock (&my_reclock) == 0);
+  dbgprintf ("Mutator %p after  lock\n", pthread_self_pointer ());
+
+  i1 = random_account ();
+  i2 = random_account ();
+  value = ((unsigned int) rand () >> 3) % 10;
+  account[i1] += value;
+  account[i2] -= value;
+
+  /* Recursive with probability 0.5.  */
+  if (((unsigned int) rand () >> 3) % 2)
+    recshuffle ();
+
+  dbgprintf ("Mutator %p before unlock\n", pthread_self_pointer ());
+  ASSERT (pthread_mutex_unlock (&my_reclock) == 0);
+  dbgprintf ("Mutator %p after  unlock\n", pthread_self_pointer ());
+}
+
+static void *
+reclock_mutator_thread (void *arg)
+{
+  int repeat;
+
+  for (repeat = REPEAT_COUNT; repeat > 0; repeat--)
+    {
+      recshuffle ();
+
+      dbgprintf ("Mutator %p before check lock\n", pthread_self_pointer ());
+      ASSERT (pthread_mutex_lock (&my_reclock) == 0);
+      check_accounts ();
+      ASSERT (pthread_mutex_unlock (&my_reclock) == 0);
+      dbgprintf ("Mutator %p after  check unlock\n", pthread_self_pointer ());
+
+      yield ();
+    }
+
+  dbgprintf ("Mutator %p dying.\n", pthread_self_pointer ());
+  return NULL;
+}
+
+static struct atomic_int reclock_checker_done;
+
+static void *
+reclock_checker_thread (void *arg)
+{
+  while (get_atomic_int_value (&reclock_checker_done) == 0)
+    {
+      dbgprintf ("Checker %p before check lock\n", pthread_self_pointer ());
+      ASSERT (pthread_mutex_lock (&my_reclock) == 0);
+      check_accounts ();
+      ASSERT (pthread_mutex_unlock (&my_reclock) == 0);
+      dbgprintf ("Checker %p after  check unlock\n", pthread_self_pointer ());
+
+      yield ();
+    }
+
+  dbgprintf ("Checker %p dying.\n", pthread_self_pointer ());
+  return NULL;
+}
+
+static void
+test_pthread_mutex_recursive (void)
+{
+  int i;
+  pthread_t checkerthread;
+  pthread_t threads[THREAD_COUNT];
+
+  /* Initialization.  */
+  for (i = 0; i < ACCOUNT_COUNT; i++)
+    account[i] = 1000;
+  init_atomic_int (&reclock_checker_done);
+  set_atomic_int_value (&reclock_checker_done, 0);
+
+  /* Spawn the threads.  */
+  ASSERT (pthread_create (&checkerthread, NULL, reclock_checker_thread, NULL)
+          == 0);
+  for (i = 0; i < THREAD_COUNT; i++)
+    ASSERT (pthread_create (&threads[i], NULL, reclock_mutator_thread, NULL)
+            == 0);
+
+  /* Wait for the threads to terminate.  */
+  for (i = 0; i < THREAD_COUNT; i++)
+    ASSERT (pthread_join (threads[i], NULL) == 0);
+  set_atomic_int_value (&reclock_checker_done, 1);
+  ASSERT (pthread_join (checkerthread, NULL) == 0);
+  check_accounts ();
+}
+
+
+/* -------------------------------------------------------------------------- */
+
+int
+main ()
+{
+#if HAVE_DECL_ALARM
+  /* Declare failure if test takes too long, by using default abort
+     caused by SIGALRM.  */
+  int alarm_value = 600;
+  signal (SIGALRM, SIG_DFL);
+  alarm (alarm_value);
+#endif
+
+  {
+    pthread_mutexattr_t attr;
+
+    ASSERT (pthread_mutexattr_init (&attr) == 0);
+    ASSERT (pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_NORMAL) == 0);
+    ASSERT (pthread_mutex_init (&my_lock, &attr) == 0);
+    ASSERT (pthread_mutexattr_destroy (&attr) == 0);
+  }
+
+  {
+    pthread_mutexattr_t attr;
+
+    ASSERT (pthread_mutexattr_init (&attr) == 0);
+    ASSERT (pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE) == 0);
+    ASSERT (pthread_mutex_init (&my_reclock, &attr) == 0);
+    ASSERT (pthread_mutexattr_destroy (&attr) == 0);
+  }
+
+#if DO_TEST_LOCK
+  printf ("Starting test_pthread_mutex_normal ..."); fflush (stdout);
+  test_pthread_mutex_normal ();
+  printf (" OK\n"); fflush (stdout);
+#endif
+#if DO_TEST_RECURSIVE_LOCK
+  printf ("Starting test_pthread_mutex_recursive ..."); fflush (stdout);
+  test_pthread_mutex_recursive ();
+  printf (" OK\n"); fflush (stdout);
+#endif
+
+  return 0;
+}
+
+#else
+
+/* No multithreading available.  */
+
+#include <stdio.h>
+
+int
+main ()
+{
+  fputs ("Skipping test: multithreading not enabled\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/gnulib-tests/test-pthread-thread.c b/gnulib-tests/test-pthread-thread.c
new file mode 100644
index 0000000..a274d78
--- /dev/null
+++ b/gnulib-tests/test-pthread-thread.c
@@ -0,0 +1,73 @@
+/* Test of pthread_create () function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include <pthread.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include "macros.h"
+
+static pthread_t main_thread_before;
+static pthread_t main_thread_after;
+static pthread_t worker_thread;
+
+#define MAGIC ((void *) 1266074729)
+static volatile int work_done;
+
+static void *
+worker_thread_func (void *arg)
+{
+  work_done = 1;
+  return MAGIC;
+}
+
+int
+main ()
+{
+  main_thread_before = pthread_self ();
+
+  if (pthread_create (&worker_thread, NULL, worker_thread_func, NULL) == 0)
+    {
+      void *ret;
+
+      /* Check that pthread_self () has the same value before than after the
+         first call to pthread_create ().  */
+      main_thread_after = pthread_self ();
+      ASSERT (memcmp (&main_thread_before, &main_thread_after,
+                      sizeof (pthread_t))
+              == 0);
+
+      ASSERT (pthread_join (worker_thread, &ret) == 0);
+
+      /* Check the return value of the thread.  */
+      ASSERT (ret == MAGIC);
+
+      /* Check that worker_thread_func () has finished executing.  */
+      ASSERT (work_done);
+
+      return 0;
+    }
+  else
+    {
+      fputs ("pthread_create failed\n", stderr);
+      return 1;
+    }
+}
diff --git a/gnulib-tests/test-pthread.c b/gnulib-tests/test-pthread.c
new file mode 100644
index 0000000..800ad04
--- /dev/null
+++ b/gnulib-tests/test-pthread.c
@@ -0,0 +1,90 @@
+/* Test of <pthread.h> substitute.
+   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+#include <pthread.h>
+
+#include "verify.h"
+
+/* Check that the types are all defined.  */
+
+pthread_t t1;
+pthread_attr_t t2;
+
+pthread_once_t t3 = PTHREAD_ONCE_INIT;
+
+pthread_mutex_t t4 = PTHREAD_MUTEX_INITIALIZER;
+pthread_mutexattr_t t5;
+
+pthread_rwlock_t t6 = PTHREAD_RWLOCK_INITIALIZER;
+pthread_rwlockattr_t t7;
+
+pthread_cond_t t8 = PTHREAD_COND_INITIALIZER;
+pthread_condattr_t t9;
+
+pthread_key_t t10;
+
+pthread_spinlock_t t11;
+
+#ifdef TODO /* Not implemented in gnulib yet */
+pthread_barrier_t t12;
+pthread_barrierattr_t t13;
+#endif
+
+/* Check that the various macros are defined.  */
+
+/* Constants for pthread_attr_setdetachstate().  */
+int ds[] = { PTHREAD_CREATE_JOINABLE, PTHREAD_CREATE_DETACHED };
+
+/* Constants for pthread_exit().  */
+void *canceled = PTHREAD_CANCELED;
+
+/* Constants for pthread_mutexattr_settype().  */
+int mt[] = {
+  PTHREAD_MUTEX_DEFAULT,
+  PTHREAD_MUTEX_NORMAL,
+  PTHREAD_MUTEX_RECURSIVE,
+  PTHREAD_MUTEX_ERRORCHECK
+};
+
+#ifdef TODO /* Not implemented in gnulib yet */
+
+/* Constants for pthread_mutexattr_setrobust().  */
+int mr[] = { PTHREAD_MUTEX_ROBUST, PTHREAD_MUTEX_STALLED };
+
+/* Constants for pthread_barrierattr_setpshared().  */
+int bp[] = { PTHREAD_PROCESS_SHARED, PTHREAD_PROCESS_PRIVATE };
+
+/* Constants for pthread_barrier_wait().  */
+int bw[] = { PTHREAD_BARRIER_SERIAL_THREAD };
+
+/* Constants for pthread_setcancelstate().  */
+int cs[] = { PTHREAD_CANCEL_ENABLE, PTHREAD_CANCEL_DISABLE };
+
+/* Constants for pthread_setcanceltype().  */
+int ct[] = { PTHREAD_CANCEL_DEFERRED, PTHREAD_CANCEL_ASYNCHRONOUS };
+
+#endif
+
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-pthread_sigmask1.c b/gnulib-tests/test-pthread_sigmask1.c
new file mode 100644
index 0000000..c1df429
--- /dev/null
+++ b/gnulib-tests/test-pthread_sigmask1.c
@@ -0,0 +1,95 @@
+/* Test of pthread_sigmask in a single-threaded program.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include <signal.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (pthread_sigmask, int, (int, const sigset_t *, sigset_t *));
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#if !(defined _WIN32 && !defined __CYGWIN__)
+
+static volatile int sigint_occurred;
+
+static void
+sigint_handler (int sig)
+{
+  sigint_occurred++;
+}
+
+int
+main (int argc, char *argv[])
+{
+  sigset_t set;
+  int pid = getpid ();
+  char command[80];
+
+  signal (SIGINT, sigint_handler);
+
+  sigemptyset (&set);
+  sigaddset (&set, SIGINT);
+
+  /* Check error handling.  */
+  ASSERT (pthread_sigmask (1729, &set, NULL) == EINVAL);
+
+  /* Block SIGINT.  */
+  ASSERT (pthread_sigmask (SIG_BLOCK, &set, NULL) == 0);
+
+  /* Request a SIGINT signal from outside.  */
+  sprintf (command, "sh -c 'sleep 1; kill -%d %d' &", SIGINT, pid);
+  ASSERT (system (command) == 0);
+
+  /* Wait.  */
+  sleep (2);
+
+  /* The signal should not have arrived yet, because it is blocked.  */
+  ASSERT (sigint_occurred == 0);
+
+  /* Unblock SIGINT.  */
+  ASSERT (pthread_sigmask (SIG_UNBLOCK, &set, NULL) == 0);
+
+  /* The signal should have arrived now, because POSIX says
+       "If there are any pending unblocked signals after the call to
+        pthread_sigmask(), at least one of those signals shall be delivered
+        before the call to pthread_sigmask() returns."  */
+  ASSERT (sigint_occurred == 1);
+
+  return 0;
+}
+
+#else
+
+/* On native Windows, getpid() values and the arguments that are passed to
+   the (Cygwin?) 'kill' program are not necessarily related.  */
+
+int
+main ()
+{
+  fputs ("Skipping test: native Windows platform\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/gnulib-tests/test-pthread_sigmask2.c b/gnulib-tests/test-pthread_sigmask2.c
new file mode 100644
index 0000000..1877458
--- /dev/null
+++ b/gnulib-tests/test-pthread_sigmask2.c
@@ -0,0 +1,105 @@
+/* Test of pthread_sigmask in a multi-threaded program.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include <signal.h>
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#if USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS
+
+static pthread_t main_thread;
+static pthread_t killer_thread;
+
+static void *
+killer_thread_func (void *arg)
+{
+  sleep (1);
+  pthread_kill (main_thread, SIGINT);
+  return NULL;
+}
+
+static volatile int sigint_occurred;
+
+static void
+sigint_handler (int sig)
+{
+  sigint_occurred++;
+}
+
+int
+main (int argc, char *argv[])
+{
+  sigset_t set;
+
+  signal (SIGINT, sigint_handler);
+
+  sigemptyset (&set);
+  sigaddset (&set, SIGINT);
+
+  /* Check error handling.  */
+  /* This call returns 0 on NetBSD 8.0.  */
+#if !defined __NetBSD__
+  ASSERT (pthread_sigmask (1729, &set, NULL) == EINVAL);
+#endif
+
+  /* Block SIGINT.  */
+  ASSERT (pthread_sigmask (SIG_BLOCK, &set, NULL) == 0);
+
+  /* Request a SIGINT signal from another thread.  */
+  main_thread = pthread_self ();
+  ASSERT (pthread_create (&killer_thread, NULL, killer_thread_func, NULL) == 0);
+
+  /* Wait.  */
+  sleep (2);
+
+  /* The signal should not have arrived yet, because it is blocked.  */
+  ASSERT (sigint_occurred == 0);
+
+  /* Unblock SIGINT.  */
+  ASSERT (pthread_sigmask (SIG_UNBLOCK, &set, NULL) == 0);
+
+  /* The signal should have arrived now, because POSIX says
+       "If there are any pending unblocked signals after the call to
+        pthread_sigmask(), at least one of those signals shall be delivered
+        before the call to pthread_sigmask() returns."  */
+  ASSERT (sigint_occurred == 1);
+
+  /* Clean up the thread.  This avoid a "ThreadSanitizer: thread leak" warning
+     from "gcc -fsanitize=thread".  */
+  ASSERT (pthread_join (killer_thread, NULL) == 0);
+
+  return 0;
+}
+
+#else
+
+int
+main ()
+{
+  fputs ("Skipping test: POSIX threads not enabled\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/gnulib-tests/test-quotearg-simple.c b/gnulib-tests/test-quotearg-simple.c
new file mode 100644
index 0000000..e1c8ba8
--- /dev/null
+++ b/gnulib-tests/test-quotearg-simple.c
@@ -0,0 +1,366 @@
+/* Test of quotearg family of functions.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2008.  */
+
+#include <config.h>
+
+#include "quotearg.h"
+
+#include <ctype.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "localcharset.h"
+#include "macros.h"
+#include "zerosize-ptr.h"
+
+#include "test-quotearg.h"
+
+static struct result_groups results_g[] = {
+  /* literal_quoting_style */
+  { { "", "\0""1\0", 3, "simple", " \t\n'\"\033?""?/\\", "a:b", "a\\b",
+      "a' b", LQ RQ, LQ RQ },
+    { "", "1", 1, "simple", " \t\n'\"\033?""?/\\", "a:b", "a\\b",
+      "a' b", LQ RQ, LQ RQ },
+    { "", "1", 1, "simple", " \t\n'\"\033?""?/\\", "a:b", "a\\b",
+      "a' b", LQ RQ, LQ RQ } },
+
+  /* shell_quoting_style */
+  { { "''", "\0""1\0", 3, "simple", "' \t\n'\\''\"\033?""?/\\'", "a:b",
+      "'a\\b'", "\"a' b\"", LQ RQ, LQ RQ },
+    { "''", "1", 1, "simple", "' \t\n'\\''\"\033?""?/\\'", "a:b",
+      "'a\\b'", "\"a' b\"", LQ RQ, LQ RQ },
+    { "''", "1", 1, "simple", "' \t\n'\\''\"\033?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", LQ RQ, LQ RQ } },
+
+  /* shell_always_quoting_style */
+  { { "''", "'\0""1\0'", 5, "'simple'", "' \t\n'\\''\"\033?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", "'" LQ RQ "'", "'" LQ RQ "'" },
+    { "''", "'1'", 3, "'simple'", "' \t\n'\\''\"\033?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", "'" LQ RQ "'", "'" LQ RQ "'" },
+    { "''", "'1'", 3, "'simple'", "' \t\n'\\''\"\033?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", "'" LQ RQ "'", "'" LQ RQ "'" } },
+
+  /* shell_escape_quoting_style */
+  { { "''", "''$'\\0''1'$'\\0'", 15, "simple",
+      "' '$'\\t\\n'\\''\"'$'\\033''?""?/\\'", "a:b",
+      "'a\\b'", "\"a' b\"", "''$'" LQ_ENC RQ_ENC "'", LQ RQ },
+    { "''", "''$'\\0''1'$'\\0'", 15, "simple",
+      "' '$'\\t\\n'\\''\"'$'\\033''?""?/\\'", "a:b",
+      "'a\\b'", "\"a' b\"", "''$'" LQ_ENC RQ_ENC "'", LQ RQ },
+    { "''", "''$'\\0''1'$'\\0'", 15, "simple",
+      "' '$'\\t\\n'\\''\"'$'\\033''?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", "''$'" LQ_ENC RQ_ENC "'", LQ RQ } },
+
+  /* shell_escape_always_quoting_style */
+  { { "''", "''$'\\0''1'$'\\0'", 15, "'simple'",
+      "' '$'\\t\\n'\\''\"'$'\\033''?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", "''$'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" },
+    { "''", "''$'\\0''1'$'\\0'", 15, "'simple'",
+      "' '$'\\t\\n'\\''\"'$'\\033''?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", "''$'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" },
+    { "''", "''$'\\0''1'$'\\0'", 15, "'simple'",
+      "' '$'\\t\\n'\\''\"'$'\\033''?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", "''$'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" } },
+
+  /* c_quoting_style */
+  { { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?""?/\\\\\"", "\"a:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" },
+    { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?""?/\\\\\"", "\"a:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" },
+    { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?""?/\\\\\"", "\"a\\:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" } },
+
+  /* c_maybe_quoting_style */
+  { { "", "\"\\0001\\0\"", 9, "simple", "\" \\t\\n'\\\"\\033?""?/\\\\\"",
+      "a:b", "a\\b", "a' b", "\"" LQ_ENC RQ_ENC "\"", LQ RQ },
+    { "", "\"\\0001\\0\"", 9, "simple", "\" \\t\\n'\\\"\\033?""?/\\\\\"",
+      "a:b", "a\\b", "a' b", "\"" LQ_ENC RQ_ENC "\"", LQ RQ },
+    { "", "\"\\0001\\0\"", 9, "simple", "\" \\t\\n'\\\"\\033?""?/\\\\\"",
+      "\"a:b\"", "a\\b", "a' b", "\"" LQ_ENC RQ_ENC "\"", LQ RQ } },
+
+  /* escape_quoting_style */
+  { { "", "\\0001\\0", 7, "simple", " \\t\\n'\"\\033?""?/\\\\", "a:b",
+      "a\\\\b", "a' b", LQ_ENC RQ_ENC, LQ RQ },
+    { "", "\\0001\\0", 7, "simple", " \\t\\n'\"\\033?""?/\\\\", "a:b",
+      "a\\\\b", "a' b", LQ_ENC RQ_ENC, LQ RQ },
+    { "", "\\0001\\0", 7, "simple", " \\t\\n'\"\\033?""?/\\\\", "a\\:b",
+      "a\\\\b", "a' b", LQ_ENC RQ_ENC, LQ RQ } },
+
+  /* locale_quoting_style */
+  { { "''", "'\\0001\\0'", 9, "'simple'", "' \\t\\n\\'\"\\033?""?/\\\\'",
+      "'a:b'", "'a\\\\b'", "'a\\' b'", "'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" },
+    { "''", "'\\0001\\0'", 9, "'simple'", "' \\t\\n\\'\"\\033?""?/\\\\'",
+      "'a:b'", "'a\\\\b'", "'a\\' b'", "'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" },
+    { "''", "'\\0001\\0'", 9, "'simple'", "' \\t\\n\\'\"\\033?""?/\\\\'",
+      "'a\\:b'", "'a\\\\b'", "'a\\' b'",
+      "'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" } },
+
+  /* clocale_quoting_style */
+  { { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?""?/\\\\\"", "\"a:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" },
+    { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?""?/\\\\\"", "\"a:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" },
+    { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?""?/\\\\\"", "\"a\\:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" } }
+};
+
+static struct result_groups flag_results[] = {
+  /* literal_quoting_style and QA_ELIDE_NULL_BYTES */
+  { { "", "1", 1, "simple", " \t\n'\"\033?""?/\\", "a:b", "a\\b", "a' b",
+      LQ RQ, LQ RQ },
+    { "", "1", 1, "simple", " \t\n'\"\033?""?/\\", "a:b", "a\\b", "a' b",
+      LQ RQ, LQ RQ },
+    { "", "1", 1, "simple", " \t\n'\"\033?""?/\\", "a:b", "a\\b", "a' b",
+      LQ RQ, LQ RQ } },
+
+  /* c_quoting_style and QA_ELIDE_OUTER_QUOTES */
+  { { "", "\"\\0001\\0\"", 9, "simple", "\" \\t\\n'\\\"\\033?""?/\\\\\"",
+      "a:b", "a\\b", "a' b", "\"" LQ_ENC RQ_ENC "\"", LQ RQ },
+    { "", "\"\\0001\\0\"", 9, "simple", "\" \\t\\n'\\\"\\033?""?/\\\\\"",
+      "a:b", "a\\b", "a' b", "\"" LQ_ENC RQ_ENC "\"", LQ RQ },
+    { "", "\"\\0001\\0\"", 9, "simple", "\" \\t\\n'\\\"\\033?""?/\\\\\"",
+      "\"a:b\"", "a\\b", "a' b", "\"" LQ_ENC RQ_ENC "\"", LQ RQ } },
+
+  /* c_quoting_style and QA_SPLIT_TRIGRAPHS */
+  { { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?\"\"?/\\\\\"", "\"a:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" },
+    { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?\"\"?/\\\\\"", "\"a:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" },
+    { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?\"\"?/\\\\\"", "\"a\\:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" } }
+};
+
+static char const *custom_quotes[][2] = {
+  { "", ""  },
+  { "'", "'"  },
+  { "(", ")"  },
+  { ":", " "  },
+  { " ", ":"  },
+  { "# ", "\n" },
+  { "\"'", "'\"" }
+};
+
+static struct result_groups custom_results[] = {
+  /* left_quote = right_quote = "" */
+  { { "", "\\0001\\0", 7, "simple",
+      " \\t\\n'\"\\033?""?/\\\\", "a:b", "a\\\\b",
+      "a' b", LQ_ENC RQ_ENC, LQ RQ },
+    { "", "\\0001\\0", 7, "simple",
+      " \\t\\n'\"\\033?""?/\\\\", "a:b", "a\\\\b",
+      "a' b", LQ_ENC RQ_ENC, LQ RQ },
+    { "", "\\0001\\0", 7, "simple",
+      " \\t\\n'\"\\033?""?/\\\\", "a\\:b", "a\\\\b",
+      "a' b", LQ_ENC RQ_ENC, LQ RQ } },
+
+  /* left_quote = right_quote = "'" */
+  { { "''", "'\\0001\\0'", 9, "'simple'",
+      "' \\t\\n\\'\"\\033?""?/\\\\'", "'a:b'", "'a\\\\b'",
+      "'a\\' b'", "'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" },
+    { "''", "'\\0001\\0'", 9, "'simple'",
+      "' \\t\\n\\'\"\\033?""?/\\\\'", "'a:b'", "'a\\\\b'",
+      "'a\\' b'", "'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" },
+    { "''", "'\\0001\\0'", 9, "'simple'",
+      "' \\t\\n\\'\"\\033?""?/\\\\'", "'a\\:b'", "'a\\\\b'",
+      "'a\\' b'", "'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" } },
+
+  /* left_quote = "(" and right_quote = ")" */
+  { { "()", "(\\0001\\0)", 9, "(simple)",
+      "( \\t\\n'\"\\033?""?/\\\\)", "(a:b)", "(a\\\\b)",
+      "(a' b)", "(" LQ_ENC RQ_ENC ")", "(" LQ RQ ")" },
+    { "()", "(\\0001\\0)", 9, "(simple)",
+      "( \\t\\n'\"\\033?""?/\\\\)", "(a:b)", "(a\\\\b)",
+      "(a' b)", "(" LQ_ENC RQ_ENC ")", "(" LQ RQ ")" },
+    { "()", "(\\0001\\0)", 9, "(simple)",
+      "( \\t\\n'\"\\033?""?/\\\\)", "(a\\:b)", "(a\\\\b)",
+      "(a' b)", "(" LQ_ENC RQ_ENC ")", "(" LQ RQ ")" } },
+
+  /* left_quote = ":" and right_quote = " " */
+  { { ": ", ":\\0001\\0 ", 9, ":simple ",
+      ":\\ \\t\\n'\"\\033?""?/\\\\ ", ":a:b ", ":a\\\\b ",
+      ":a'\\ b ", ":" LQ_ENC RQ_ENC " ", ":" LQ RQ " " },
+    { ": ", ":\\0001\\0 ", 9, ":simple ",
+      ":\\ \\t\\n'\"\\033?""?/\\\\ ", ":a:b ", ":a\\\\b ",
+      ":a'\\ b ", ":" LQ_ENC RQ_ENC " ", ":" LQ RQ " " },
+    { ": ", ":\\0001\\0 ", 9, ":simple ",
+      ":\\ \\t\\n'\"\\033?""?/\\\\ ", ":a\\:b ", ":a\\\\b ",
+      ":a'\\ b ", ":" LQ_ENC RQ_ENC " ", ":" LQ RQ " " } },
+
+  /* left_quote = " " and right_quote = ":" */
+  { { " :", " \\0001\\0:", 9, " simple:",
+      "  \\t\\n'\"\\033?""?/\\\\:", " a\\:b:", " a\\\\b:",
+      " a' b:", " " LQ_ENC RQ_ENC ":", " " LQ RQ ":" },
+    { " :", " \\0001\\0:", 9, " simple:",
+      "  \\t\\n'\"\\033?""?/\\\\:", " a\\:b:", " a\\\\b:",
+      " a' b:", " " LQ_ENC RQ_ENC ":", " " LQ RQ ":" },
+    { " :", " \\0001\\0:", 9, " simple:",
+      "  \\t\\n'\"\\033?""?/\\\\:", " a\\:b:", " a\\\\b:",
+      " a' b:", " " LQ_ENC RQ_ENC ":", " " LQ RQ ":" } },
+
+  /* left_quote = "# " and right_quote = "\n" */
+  { { "# \n", "# \\0001\\0\n", 10, "# simple\n",
+      "#  \\t\\n'\"\\033?""?/\\\\\n", "# a:b\n", "# a\\\\b\n",
+      "# a' b\n", "# " LQ_ENC RQ_ENC "\n", "# " LQ RQ "\n" },
+    { "# \n", "# \\0001\\0\n", 10, "# simple\n",
+      "#  \\t\\n'\"\\033?""?/\\\\\n", "# a:b\n", "# a\\\\b\n",
+      "# a' b\n", "# " LQ_ENC RQ_ENC "\n", "# " LQ RQ "\n" },
+    { "# \n", "# \\0001\\0\n", 10, "# simple\n",
+      "#  \\t\\n'\"\\033?""?/\\\\\n", "# a\\:b\n", "# a\\\\b\n",
+      "# a' b\n", "# " LQ_ENC RQ_ENC "\n", "# " LQ RQ "\n" } },
+
+  /* left_quote = "\"'" and right_quote = "'\"" */
+  { { "\"''\"", "\"'\\0001\\0'\"", 11, "\"'simple'\"",
+      "\"' \\t\\n\\'\"\\033?""?/\\\\'\"", "\"'a:b'\"", "\"'a\\\\b'\"",
+      "\"'a' b'\"", "\"'" LQ_ENC RQ_ENC "'\"", "\"'" LQ RQ "'\"" },
+    { "\"''\"", "\"'\\0001\\0'\"", 11, "\"'simple'\"",
+      "\"' \\t\\n\\'\"\\033?""?/\\\\'\"", "\"'a:b'\"", "\"'a\\\\b'\"",
+      "\"'a' b'\"", "\"'" LQ_ENC RQ_ENC "'\"", "\"'" LQ RQ "'\"" },
+    { "\"''\"", "\"'\\0001\\0'\"", 11, "\"'simple'\"",
+      "\"' \\t\\n\\'\"\\033?""?/\\\\'\"", "\"'a\\:b'\"", "\"'a\\\\b'\"",
+      "\"'a' b'\"", "\"'" LQ_ENC RQ_ENC "'\"", "\"'" LQ RQ "'\"" } }
+};
+
+static char *
+use_quote_double_quotes (const char *str, size_t *len)
+{
+  char *p = *len == SIZE_MAX ? quotearg_char (str, '"')
+                               : quotearg_char_mem (str, *len, '"');
+  *len = strlen (p);
+  return p;
+}
+
+int
+main (int argc _GL_UNUSED, char *argv[])
+{
+  int i;
+  bool ascii_only = MB_CUR_MAX == 1 && !isprint ((unsigned char) LQ[0]);
+
+  /* This part of the program is hard-wired to the C locale since it
+     does not call setlocale.  However, according to POSIX, the use of
+     8-bit bytes in a character context in the C locale gives
+     unspecified results (that is, the C locale charset is allowed to
+     be unibyte with 8-bit bytes rejected [ASCII], unibyte with 8-bit
+     bytes being characters [often ISO-8859-1], or multibyte [often
+     UTF-8]).  We assume that the latter two cases will be
+     indistinguishable in this test - that is, the LQ and RQ sequences
+     will pass through unchanged in either type of charset.  So when
+     testing for quoting of str7, use the ascii_only flag to decide
+     what to expect for the 8-bit data being quoted.  */
+  ASSERT (!isprint ('\033'));
+  for (i = literal_quoting_style; i <= clocale_quoting_style; i++)
+    {
+      set_quoting_style (NULL, (enum quoting_style) i);
+      if (!(i == locale_quoting_style || i == clocale_quoting_style)
+          || (strcmp (locale_charset (), "ASCII") == 0
+              || strcmp (locale_charset (), "ANSI_X3.4-1968") == 0))
+        {
+          compare_strings (use_quotearg_buffer, &results_g[i].group1,
+                           ascii_only);
+          compare_strings (use_quotearg, &results_g[i].group2,
+                           ascii_only);
+          if (i == c_quoting_style)
+            compare_strings (use_quote_double_quotes, &results_g[i].group2,
+                             ascii_only);
+          compare_strings (use_quotearg_colon, &results_g[i].group3,
+                           ascii_only);
+        }
+    }
+
+  set_quoting_style (NULL, literal_quoting_style);
+  ASSERT (set_quoting_flags (NULL, QA_ELIDE_NULL_BYTES) == 0);
+  compare_strings (use_quotearg_buffer, &flag_results[0].group1, ascii_only);
+  compare_strings (use_quotearg, &flag_results[0].group2, ascii_only);
+  compare_strings (use_quotearg_colon, &flag_results[0].group3, ascii_only);
+
+  set_quoting_style (NULL, c_quoting_style);
+  ASSERT (set_quoting_flags (NULL, QA_ELIDE_OUTER_QUOTES)
+          == QA_ELIDE_NULL_BYTES);
+  compare_strings (use_quotearg_buffer, &flag_results[1].group1, ascii_only);
+  compare_strings (use_quotearg, &flag_results[1].group2, ascii_only);
+  compare_strings (use_quote_double_quotes, &flag_results[1].group2,
+                   ascii_only);
+  compare_strings (use_quotearg_colon, &flag_results[1].group3, ascii_only);
+
+  ASSERT (set_quoting_flags (NULL, QA_SPLIT_TRIGRAPHS)
+          == QA_ELIDE_OUTER_QUOTES);
+  compare_strings (use_quotearg_buffer, &flag_results[2].group1, ascii_only);
+  compare_strings (use_quotearg, &flag_results[2].group2, ascii_only);
+  compare_strings (use_quote_double_quotes, &flag_results[2].group2,
+                   ascii_only);
+  compare_strings (use_quotearg_colon, &flag_results[2].group3, ascii_only);
+
+  ASSERT (set_quoting_flags (NULL, 0) == QA_SPLIT_TRIGRAPHS);
+
+  for (i = 0; i < sizeof custom_quotes / sizeof *custom_quotes; ++i)
+    {
+      set_custom_quoting (NULL,
+                          custom_quotes[i][0], custom_quotes[i][1]);
+      compare_strings (use_quotearg_buffer, &custom_results[i].group1,
+                       ascii_only);
+      compare_strings (use_quotearg, &custom_results[i].group2, ascii_only);
+      compare_strings (use_quotearg_colon, &custom_results[i].group3,
+                       ascii_only);
+    }
+
+  {
+    /* Trigger the bug whereby quotearg_buffer would read beyond the NUL
+       that defines the end of the string being quoted.  Use an input
+       string whose NUL is the last byte before an unreadable page.  */
+    char *z = zerosize_ptr ();
+
+    if (z)
+      {
+        size_t q_len = 1024;
+        char *q = malloc (q_len + 1);
+        char buf[10];
+        memset (q, 'Q', q_len);
+        q[q_len] = 0;
+
+        /* Z points to the boundary between a readable/writable page
+           and one that is neither readable nor writable.  Position
+           our string so its NUL is at the end of the writable one.  */
+        char const *str = "____";
+        size_t s_len = strlen (str);
+        z -= s_len + 1;
+        memcpy (z, str, s_len + 1);
+
+        set_custom_quoting (NULL, q, q);
+        /* Whether this actually triggers a SEGV depends on the
+           implementation of memcmp: whether it compares only byte-at-
+           a-time, and from left to right (no SEGV) or some other way.  */
+        size_t n = quotearg_buffer (buf, sizeof buf, z, SIZE_MAX, NULL);
+        ASSERT (n == s_len + 2 * q_len);
+        ASSERT (memcmp (buf, q, sizeof buf) == 0);
+        free (q);
+      }
+  }
+
+  quotearg_free ();
+
+  return 0;
+}
diff --git a/gnulib-tests/test-quotearg.h b/gnulib-tests/test-quotearg.h
new file mode 100644
index 0000000..dd7529a
--- /dev/null
+++ b/gnulib-tests/test-quotearg.h
@@ -0,0 +1,128 @@
+/* Test of quotearg family of functions.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2008.  */
+
+struct result_strings {
+  char const *str1; /* Translation of "".  */
+  char const *str2; /* Translation of "\0""1\0".  */
+  size_t len2; /* Length of str2.  */
+  char const *str3; /* Translation of "simple".  */
+  char const *str4; /* Translation of " \t\n'\"\033?""?/\\".  */
+  char const *str5; /* Translation of "a:b".  */
+  char const *str6; /* Translation of "a\\b".  */
+  char const *str7; /* Translation of "a' b".  */
+  char const *str8a; /* Translation of LQ RQ, in ASCII charset.  */
+  char const *str8b; /* Translation of LQ RQ, in Latin1 or UTF-8 charset.  */
+};
+
+struct result_groups {
+  struct result_strings group1; /* Via quotearg_buffer.  */
+  struct result_strings group2; /* Via quotearg{,_mem}.  */
+  struct result_strings group3; /* Via quotearg_colon{,_mem}.  */
+};
+
+/* These quotes are borrowed from a pt_PT.utf8 translation.  */
+# define LQ "\302\253"
+# define RQ "\302\273"
+# define LQ_ENC "\\302\\253"
+# define RQ_ENC "\\302\\273"
+# define RQ_ESC "\\\302\273"
+
+static struct result_strings inputs = {
+  "", "\0001\0", 3, "simple", " \t\n'\"\033?""?/\\", "a:b", "a\\b",
+  "a' b", LQ RQ, NULL
+};
+
+static void
+compare (char const *a, size_t la, char const *b, size_t lb)
+{
+  ASSERT (la == lb);
+  ASSERT (memcmp (a, b, la) == 0);
+  ASSERT (b[lb] == '\0');
+}
+
+static void
+compare_strings (char *(func) (char const *, size_t *),
+                 struct result_strings *results, bool ascii_only)
+{
+  size_t len;
+  char *p;
+
+  len = 0;
+  p = func (inputs.str1, &len);
+  compare (results->str1, strlen (results->str1), p, len);
+
+  len = inputs.len2;
+  p = func (inputs.str2, &len);
+  compare (results->str2, results->len2, p, len);
+
+  len = SIZE_MAX;
+  p = func (inputs.str3, &len);
+  compare (results->str3, strlen (results->str3), p, len);
+
+  len = strlen (inputs.str4);
+  p = func (inputs.str4, &len);
+  compare (results->str4, strlen (results->str4), p, len);
+
+  len = SIZE_MAX;
+  p = func (inputs.str5, &len);
+  compare (results->str5, strlen (results->str5), p, len);
+
+  len = strlen (inputs.str6);
+  p = func (inputs.str6, &len);
+  compare (results->str6, strlen (results->str6), p, len);
+
+  len = strlen (inputs.str7);
+  p = func (inputs.str7, &len);
+  compare (results->str7, strlen (results->str7), p, len);
+
+  len = strlen (inputs.str8a);
+  p = func (inputs.str8a, &len);
+  if (ascii_only)
+    compare (results->str8a, strlen (results->str8a), p, len);
+  else
+    compare (results->str8b, strlen (results->str8b), p, len);
+}
+
+static char *
+use_quotearg_buffer (const char *str, size_t *len)
+{
+  static char buf[100];
+  size_t size;
+  memset (buf, 0xa5, 100);
+  size = quotearg_buffer (buf, 100, str, *len, NULL);
+  *len = size;
+  ASSERT ((unsigned char) buf[size + 1] == 0xa5);
+  return buf;
+}
+
+static char *
+use_quotearg (const char *str, size_t *len)
+{
+  char *p = *len == SIZE_MAX ? quotearg (str) : quotearg_mem (str, *len);
+  *len = strlen (p);
+  return p;
+}
+
+static char *
+use_quotearg_colon (const char *str, size_t *len)
+{
+  char *p = (*len == SIZE_MAX ? quotearg_colon (str)
+             : quotearg_colon_mem (str, *len));
+  *len = strlen (p);
+  return p;
+}
diff --git a/gnulib-tests/test-raise.c b/gnulib-tests/test-raise.c
new file mode 100644
index 0000000..9135623
--- /dev/null
+++ b/gnulib-tests/test-raise.c
@@ -0,0 +1,50 @@
+/* Test raising a signal.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <signal.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (raise, int, (int));
+
+#include <stdlib.h>
+
+#include "macros.h"
+
+/* It is safe to use _Noreturn here: exit() never returns, and GCC knows that
+   exit() is a non-returning function, even on platforms where its declaration
+   in <stdlib.h> does not have the 'noreturn' attribute.  */
+static _Noreturn void
+handler (int sig)
+{
+  exit (0);
+}
+
+int
+main (void)
+{
+  /* Test behaviour for invalid argument.  */
+  ASSERT (raise (-1) != 0);
+
+  /* Test behaviour for SIGINT.  */
+  ASSERT (signal (SIGINT, handler) != SIG_ERR);
+
+  raise (SIGINT);
+
+  /* We should not get here, because the handler takes away the control.  */
+  exit (1);
+}
diff --git a/gnulib-tests/test-rand-isaac.c b/gnulib-tests/test-rand-isaac.c
new file mode 100644
index 0000000..75b2d81
--- /dev/null
+++ b/gnulib-tests/test-rand-isaac.c
@@ -0,0 +1,591 @@
+/* Test the ISAAC or ISAAC64 pseudorandom number generator.
+
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#include <config.h>
+
+#include "rand-isaac.h"
+
+#include <fcntl.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "macros.h"
+
+/* This expected output was generated by running the programs in
+   <http://burtleburtle.net/bob/rand/isaacafa.html>, as last modified
+   on 2010-01-22. The 32-bit numbers were output by rand.c, and the
+   64-bit by isaac64.c, both on x86, as those programs are not
+   portable to 64-bit platforms.  */
+
+static isaac_word const expected[2][ISAAC_WORDS] =
+  {
+   #if ISAAC_BITS == 32
+    {
+      UINT32_C (0xf650e4c8), UINT32_C (0xe448e96d),
+      UINT32_C (0x98db2fb4), UINT32_C (0xf5fad54f),
+      UINT32_C (0x433f1afb), UINT32_C (0xedec154a),
+      UINT32_C (0xd8370487), UINT32_C (0x46ca4f9a),
+      UINT32_C (0x5de3743e), UINT32_C (0x88381097),
+      UINT32_C (0xf1d444eb), UINT32_C (0x823cedb6),
+      UINT32_C (0x6a83e1e0), UINT32_C (0x4a5f6355),
+      UINT32_C (0xc7442433), UINT32_C (0x25890e2e),
+      UINT32_C (0x7452e319), UINT32_C (0x57161df6),
+      UINT32_C (0x38a824f3), UINT32_C (0x002ed713),
+      UINT32_C (0x29f55449), UINT32_C (0x51c08d83),
+      UINT32_C (0xd78cb99e), UINT32_C (0xa0cc74f3),
+      UINT32_C (0x8f651659), UINT32_C (0xcbc8b7c2),
+      UINT32_C (0xf5f71c69), UINT32_C (0x12ad6419),
+      UINT32_C (0xe5792e1b), UINT32_C (0x860536b8),
+      UINT32_C (0x09b3ce98), UINT32_C (0xd45d6d81),
+      UINT32_C (0xf3b26129), UINT32_C (0x17e38f85),
+      UINT32_C (0x29cf72ce), UINT32_C (0x349947b0),
+      UINT32_C (0xc998f9ff), UINT32_C (0xb5e13dae),
+      UINT32_C (0x32ae2a2b), UINT32_C (0xf7cf814c),
+      UINT32_C (0x8ebfa303), UINT32_C (0xcf22e064),
+      UINT32_C (0x0b923200), UINT32_C (0xeca4d58a),
+      UINT32_C (0xef53cec4), UINT32_C (0xd0f7b37d),
+      UINT32_C (0x9c411a2a), UINT32_C (0xffdf8a80),
+      UINT32_C (0xb40e27bc), UINT32_C (0xb4d2f976),
+      UINT32_C (0x44b89b08), UINT32_C (0xf37c71d5),
+      UINT32_C (0x1a70e7e9), UINT32_C (0x0bdb9c30),
+      UINT32_C (0x60dc5207), UINT32_C (0xb3c3f24b),
+      UINT32_C (0xd7386806), UINT32_C (0x229749b5),
+      UINT32_C (0x4e232cd0), UINT32_C (0x91dabc65),
+      UINT32_C (0xa70e1101), UINT32_C (0x8b87437e),
+      UINT32_C (0x5781414f), UINT32_C (0xcdbc62e2),
+      UINT32_C (0x8107c9ff), UINT32_C (0x69d2e4ae),
+      UINT32_C (0x3b18e752), UINT32_C (0xb143b688),
+      UINT32_C (0x6f4e0772), UINT32_C (0x95138769),
+      UINT32_C (0x943c3c74), UINT32_C (0xafc17a97),
+      UINT32_C (0x0fd43963), UINT32_C (0x6a529b0b),
+      UINT32_C (0xd8c58a6a), UINT32_C (0xa8bcc22d),
+      UINT32_C (0x2db35dfe), UINT32_C (0xa7a2f402),
+      UINT32_C (0x6cb167db), UINT32_C (0x538e1f4e),
+      UINT32_C (0x7275e277), UINT32_C (0x1d3b8e97),
+      UINT32_C (0xecc5dc91), UINT32_C (0x15e3a5b9),
+      UINT32_C (0x03696614), UINT32_C (0x30ab93ec),
+      UINT32_C (0xac9fe69d), UINT32_C (0x7bc76811),
+      UINT32_C (0x60eda8da), UINT32_C (0x28833522),
+      UINT32_C (0xd5295ebc), UINT32_C (0x5adb60e7),
+      UINT32_C (0xf7e1cdd0), UINT32_C (0x97166d14),
+      UINT32_C (0xb67ec13a), UINT32_C (0x210f3925),
+      UINT32_C (0x64af0fef), UINT32_C (0x0d028684),
+      UINT32_C (0x3aea3dec), UINT32_C (0xb058bafb),
+      UINT32_C (0xb8b0ccfc), UINT32_C (0xf2b5cc05),
+      UINT32_C (0xe3a662d9), UINT32_C (0x814bc24c),
+      UINT32_C (0x2364a1aa), UINT32_C (0x37c0ed05),
+      UINT32_C (0x2b36505c), UINT32_C (0x451e7ec8),
+      UINT32_C (0x5d2a542f), UINT32_C (0xe43d0fbb),
+      UINT32_C (0x91c8d925), UINT32_C (0x60d4d5f8),
+      UINT32_C (0x12a0594b), UINT32_C (0x9e8a51da),
+      UINT32_C (0xcd49ebdb), UINT32_C (0x1b0dcdc1),
+      UINT32_C (0xcd57c7f7), UINT32_C (0xe6344451),
+      UINT32_C (0x7ded386f), UINT32_C (0x2f36fa86),
+      UINT32_C (0xa6d12101), UINT32_C (0x33bc405d),
+      UINT32_C (0xb388d96c), UINT32_C (0xdb6dbe96),
+      UINT32_C (0xfe29661c), UINT32_C (0x13edc0cb),
+      UINT32_C (0xcb0eee4a), UINT32_C (0x70cc94ae),
+      UINT32_C (0xde11ed34), UINT32_C (0x0606cf9f),
+      UINT32_C (0x3a6ce389), UINT32_C (0x23d74f4e),
+      UINT32_C (0xa37f63ff), UINT32_C (0x917bdec2),
+      UINT32_C (0xd73f72d4), UINT32_C (0x0e7e0e67),
+      UINT32_C (0x3d77d9a2), UINT32_C (0x13add922),
+      UINT32_C (0x8891b3db), UINT32_C (0x01a9bd70),
+      UINT32_C (0x56a001e3), UINT32_C (0xd51f093d),
+      UINT32_C (0xcc033ce3), UINT32_C (0x5ad0d3b0),
+      UINT32_C (0x34105a8c), UINT32_C (0x6a123f57),
+      UINT32_C (0xbd2e5024), UINT32_C (0x7364944b),
+      UINT32_C (0xe89b1a3b), UINT32_C (0x21835c4d),
+      UINT32_C (0x9f39e2d9), UINT32_C (0xd405ded8),
+      UINT32_C (0x294d37e5), UINT32_C (0xbccaaeed),
+      UINT32_C (0x35a124b5), UINT32_C (0x6708a2bc),
+      UINT32_C (0xb00960ba), UINT32_C (0x2a98121a),
+      UINT32_C (0x4d8fae82), UINT32_C (0x0bb3263f),
+      UINT32_C (0x12595a19), UINT32_C (0x6a107589),
+      UINT32_C (0x0809e494), UINT32_C (0x21c171ec),
+      UINT32_C (0x884d6825), UINT32_C (0x14c8009b),
+      UINT32_C (0xb0b84e7b), UINT32_C (0x03fb88f4),
+      UINT32_C (0x28e7cb78), UINT32_C (0x9388b13b),
+      UINT32_C (0xdd2dc1d5), UINT32_C (0x848f520a),
+      UINT32_C (0x07c28cd1), UINT32_C (0x68a39358),
+      UINT32_C (0x72c9137d), UINT32_C (0x127dd430),
+      UINT32_C (0xc613f157), UINT32_C (0x8c2f0d55),
+      UINT32_C (0xf7d3f39f), UINT32_C (0x309bfb78),
+      UINT32_C (0x8406b137), UINT32_C (0x46c0a6f5),
+      UINT32_C (0x3718d597), UINT32_C (0x08607f04),
+      UINT32_C (0x76904b6d), UINT32_C (0x04db4e13),
+      UINT32_C (0xcd7411a7), UINT32_C (0xb510ce0e),
+      UINT32_C (0xbfc7f7cc), UINT32_C (0xb83f957a),
+      UINT32_C (0xfdfef62d), UINT32_C (0xc35e4580),
+      UINT32_C (0x3ff1e524), UINT32_C (0x4112d96c),
+      UINT32_C (0x02c9b944), UINT32_C (0xd5990dfb),
+      UINT32_C (0xe7e26581), UINT32_C (0x0d9c7e7e),
+      UINT32_C (0x826dfa89), UINT32_C (0x66f1e0ab),
+      UINT32_C (0x30bcc764), UINT32_C (0xeadebeac),
+      UINT32_C (0xed35e5ee), UINT32_C (0x0c571a7d),
+      UINT32_C (0xe4f3a26a), UINT32_C (0xf7f58f7b),
+      UINT32_C (0xadf6bc23), UINT32_C (0x5d023e65),
+      UINT32_C (0x1ed3ff4e), UINT32_C (0xec46b0b6),
+      UINT32_C (0xd2a93b51), UINT32_C (0xe75b41c9),
+      UINT32_C (0x7e315aeb), UINT32_C (0x61119a5a),
+      UINT32_C (0x53245b79), UINT32_C (0x33f6d7b1),
+      UINT32_C (0xcae8deba), UINT32_C (0x50fc8194),
+      UINT32_C (0xafa92a6d), UINT32_C (0xc87c8006),
+      UINT32_C (0x4188bfcd), UINT32_C (0x8bace62e),
+      UINT32_C (0x78ffa568), UINT32_C (0x5597ec0f),
+      UINT32_C (0xb4415f7d), UINT32_C (0x08294766),
+      UINT32_C (0xad567643), UINT32_C (0x09c36f90),
+      UINT32_C (0x3dde9f39), UINT32_C (0x4a0a283c),
+      UINT32_C (0x18080c8e), UINT32_C (0x080c79ec),
+      UINT32_C (0x79ae4c10), UINT32_C (0xcb9e1563),
+      UINT32_C (0x7cdd662f), UINT32_C (0x62d31911),
+      UINT32_C (0xa4ca0cf1), UINT32_C (0x5cf824cd),
+      UINT32_C (0x3b708f99), UINT32_C (0x1e16614c),
+      UINT32_C (0xb6b9d766), UINT32_C (0x5de87abb),
+      UINT32_C (0x7229ea81), UINT32_C (0xd5b2d750),
+      UINT32_C (0x56e6cd21), UINT32_C (0xfe1e42d5),
+      UINT32_C (0x96da2655), UINT32_C (0xc2b9aa36),
+      UINT32_C (0xb8f6fd4a), UINT32_C (0x6a158d10),
+      UINT32_C (0x01913fd3), UINT32_C (0xaf7d1fb8),
+      UINT32_C (0x0b5e435f), UINT32_C (0x90c10757),
+      UINT32_C (0x6554abda), UINT32_C (0x7a68710f)
+    },
+    {
+      UINT32_C (0x82ac484f), UINT32_C (0xd7e1c7be),
+      UINT32_C (0x95c85eaa), UINT32_C (0x94a302f4),
+      UINT32_C (0x4d3cfbda), UINT32_C (0x786b2908),
+      UINT32_C (0x1010b275), UINT32_C (0x82d53d12),
+      UINT32_C (0x21e2a51c), UINT32_C (0x3d1e9150),
+      UINT32_C (0xb059261d), UINT32_C (0xd0638e1a),
+      UINT32_C (0x31860f05), UINT32_C (0x81f2864d),
+      UINT32_C (0xff4cfc35), UINT32_C (0x0451516d),
+      UINT32_C (0xbd086f26), UINT32_C (0xbc5654c1),
+      UINT32_C (0x65dfa427), UINT32_C (0xa82427f5),
+      UINT32_C (0x582e3014), UINT32_C (0xb8d2486d),
+      UINT32_C (0xc79a1749), UINT32_C (0x9a1d7745),
+      UINT32_C (0x8766bb54), UINT32_C (0x1e04a7f7),
+      UINT32_C (0x3d3dff8a), UINT32_C (0xd5ec6bf4),
+      UINT32_C (0xdbef7d9f), UINT32_C (0x36ec0ea3),
+      UINT32_C (0x1feb2e4f), UINT32_C (0x15cfcc5c),
+      UINT32_C (0xd8c423fb), UINT32_C (0xd0ef3cc9),
+      UINT32_C (0xeb244925), UINT32_C (0xba5590c8),
+      UINT32_C (0xa5f48ac4), UINT32_C (0x33c5321c),
+      UINT32_C (0x613b67b2), UINT32_C (0x479c3a22),
+      UINT32_C (0xe21339cc), UINT32_C (0x10d210aa),
+      UINT32_C (0x931dd7e2), UINT32_C (0xef05ee06),
+      UINT32_C (0xb82f2703), UINT32_C (0xa385cb2c),
+      UINT32_C (0x5d67133c), UINT32_C (0x877eb7b4),
+      UINT32_C (0x1e3437f7), UINT32_C (0x5afb43ae),
+      UINT32_C (0x53c078f3), UINT32_C (0x94d90481),
+      UINT32_C (0x1d964589), UINT32_C (0x08063a85),
+      UINT32_C (0xe1322228), UINT32_C (0x1956b1e5),
+      UINT32_C (0x31860f13), UINT32_C (0x2e7b022f),
+      UINT32_C (0x21182ca3), UINT32_C (0x96f703ac),
+      UINT32_C (0x46819e2e), UINT32_C (0x0d28fe52),
+      UINT32_C (0x3724d4dc), UINT32_C (0xa0eabe6b),
+      UINT32_C (0xc66699fd), UINT32_C (0xc6112fdd),
+      UINT32_C (0x19c1e69c), UINT32_C (0x04d3658a),
+      UINT32_C (0x4b55dd99), UINT32_C (0x31907d62),
+      UINT32_C (0xf854b522), UINT32_C (0x4d678f26),
+      UINT32_C (0x22ae0582), UINT32_C (0xeafed133),
+      UINT32_C (0xe4a51d21), UINT32_C (0x84bd6dd6),
+      UINT32_C (0xc1a51375), UINT32_C (0x3f28ee63),
+      UINT32_C (0xfb737b1a), UINT32_C (0x70a1660e),
+      UINT32_C (0x8a8dfaa3), UINT32_C (0x1be79937),
+      UINT32_C (0xf7476978), UINT32_C (0x513c1764),
+      UINT32_C (0x531ac6bf), UINT32_C (0x12c06908),
+      UINT32_C (0x001cdb95), UINT32_C (0x1a4b6a53),
+      UINT32_C (0xd067fce5), UINT32_C (0x12b2cfb6),
+      UINT32_C (0x9ddb477f), UINT32_C (0x740e0066),
+      UINT32_C (0x39ddf25a), UINT32_C (0xcc8bfa2d),
+      UINT32_C (0xf1b20eaf), UINT32_C (0x64f2632c),
+      UINT32_C (0x9783cdee), UINT32_C (0x63bfd4d8),
+      UINT32_C (0x0084cfe5), UINT32_C (0x75f4e9e2),
+      UINT32_C (0x19b48fd0), UINT32_C (0x6c48ddd8),
+      UINT32_C (0x7a36af93), UINT32_C (0x71865c4c),
+      UINT32_C (0x9ce0199d), UINT32_C (0x867027d7),
+      UINT32_C (0x2cb7b77f), UINT32_C (0x84ef01da),
+      UINT32_C (0x72f5972f), UINT32_C (0x040f7074),
+      UINT32_C (0xdf9afa29), UINT32_C (0xc921f94e),
+      UINT32_C (0x75c08a36), UINT32_C (0x18c1ef9a),
+      UINT32_C (0xd649a428), UINT32_C (0xc5b71937),
+      UINT32_C (0x8a30738a), UINT32_C (0xd97cd348),
+      UINT32_C (0x858129a6), UINT32_C (0x239e3b0a),
+      UINT32_C (0xbbb8abc4), UINT32_C (0x80fac4c2),
+      UINT32_C (0xecfcf20b), UINT32_C (0xd9d711f9),
+      UINT32_C (0xe2a4ef71), UINT32_C (0xb5fe87c0),
+      UINT32_C (0xbe8b06b2), UINT32_C (0xaafef5a7),
+      UINT32_C (0x9c15db3b), UINT32_C (0x0aeb8165),
+      UINT32_C (0x4389a84a), UINT32_C (0x253b1d7a),
+      UINT32_C (0x19047c79), UINT32_C (0x7cdc78a2),
+      UINT32_C (0xd20adf03), UINT32_C (0x56f55a71),
+      UINT32_C (0x3e730fa8), UINT32_C (0xfd8650d8),
+      UINT32_C (0x959e234e), UINT32_C (0xb7546681),
+      UINT32_C (0xdad1b22a), UINT32_C (0x142a6e85),
+      UINT32_C (0x8ef4bce6), UINT32_C (0x68235b9d),
+      UINT32_C (0x85a13f85), UINT32_C (0x74096ae7),
+      UINT32_C (0xa949bea2), UINT32_C (0x29322d0d),
+      UINT32_C (0xd5683858), UINT32_C (0x82846526),
+      UINT32_C (0x403dae08), UINT32_C (0x6dd1943a),
+      UINT32_C (0xe1279bff), UINT32_C (0x9e7e4f04),
+      UINT32_C (0x1c3a4524), UINT32_C (0x484525e4),
+      UINT32_C (0x81d4cc5f), UINT32_C (0xe24124c0),
+      UINT32_C (0x037464c0), UINT32_C (0xbf1bd691),
+      UINT32_C (0x26ceb003), UINT32_C (0x275ead3a),
+      UINT32_C (0xc5bde908), UINT32_C (0x26414ff3),
+      UINT32_C (0xa30519ad), UINT32_C (0xd7b43abe),
+      UINT32_C (0x2ce5d3d5), UINT32_C (0x88412761),
+      UINT32_C (0x97ca2070), UINT32_C (0xe5fbb9c7),
+      UINT32_C (0x276df0b4), UINT32_C (0x308f751f),
+      UINT32_C (0x37a97df6), UINT32_C (0xc9cd808c),
+      UINT32_C (0xfe4cb380), UINT32_C (0x3d469303),
+      UINT32_C (0xaee19096), UINT32_C (0xc0d5d42a),
+      UINT32_C (0x4e823ad3), UINT32_C (0xf5f9cc3b),
+      UINT32_C (0x4286619c), UINT32_C (0x9ca45e1c),
+      UINT32_C (0x66c97340), UINT32_C (0x891aec49),
+      UINT32_C (0x45bae606), UINT32_C (0xc798f047),
+      UINT32_C (0x52649d6c), UINT32_C (0xce86fdfc),
+      UINT32_C (0x80c6e402), UINT32_C (0xd6ec2f2b),
+      UINT32_C (0x27c82282), UINT32_C (0x1fe26ce0),
+      UINT32_C (0x92f57ea7), UINT32_C (0xde462f4d),
+      UINT32_C (0x07497cae), UINT32_C (0x5a48755c),
+      UINT32_C (0x721502dd), UINT32_C (0x6cbe7935),
+      UINT32_C (0x836d8003), UINT32_C (0x9ead7f70),
+      UINT32_C (0x9ab3a42f), UINT32_C (0x4c8652d6),
+      UINT32_C (0x32e39273), UINT32_C (0xe8fa3860),
+      UINT32_C (0x1da4f25a), UINT32_C (0x0cd6ef81),
+      UINT32_C (0x02503f7d), UINT32_C (0x8854a0a1),
+      UINT32_C (0x9a30c4e8), UINT32_C (0x88157153),
+      UINT32_C (0x05efe294), UINT32_C (0x57c4c925),
+      UINT32_C (0x2887d96f), UINT32_C (0xc1a71e3c),
+      UINT32_C (0xe9f84163), UINT32_C (0x2d0985de),
+      UINT32_C (0xd21e796c), UINT32_C (0x6fb5ce56),
+      UINT32_C (0x02614abf), UINT32_C (0xc3c7be2c),
+      UINT32_C (0xb54fed6f), UINT32_C (0xa617a083),
+      UINT32_C (0xc3142d8f), UINT32_C (0x6079e4ce),
+      UINT32_C (0xceffc147), UINT32_C (0x1d0cb81b),
+      UINT32_C (0xdc153e5f), UINT32_C (0xe36ef5bb),
+      UINT32_C (0xd531161a), UINT32_C (0x165b1015),
+      UINT32_C (0x7aa114ed), UINT32_C (0x3f7579b3),
+      UINT32_C (0xf7f395f1), UINT32_C (0xbc6172c7),
+      UINT32_C (0xa86f875e), UINT32_C (0x0e6c51b3),
+      UINT32_C (0xcdfec2af), UINT32_C (0x73c0e762),
+      UINT32_C (0x824c2009), UINT32_C (0xc5a87748),
+      UINT32_C (0x94d40125), UINT32_C (0x8aba3ffb),
+      UINT32_C (0xd32be060), UINT32_C (0x8c17eff0),
+      UINT32_C (0x21e2547e), UINT32_C (0x07cffad9),
+      UINT32_C (0x05340e15), UINT32_C (0xf3310c92),
+      UINT32_C (0x9d8d1908), UINT32_C (0x86ba527f),
+      UINT32_C (0xf943f672), UINT32_C (0xef73fbf0),
+      UINT32_C (0x46d95ca5), UINT32_C (0xc54cd95b),
+      UINT32_C (0x9d855e89), UINT32_C (0x4bb5af29)
+    }
+   #else
+    {
+      UINT64_C (0x12a8f216af9418c2), UINT64_C (0xd4490ad526f14431),
+      UINT64_C (0xb49c3b3995091a36), UINT64_C (0x5b45e522e4b1b4ef),
+      UINT64_C (0xa1e9300cd8520548), UINT64_C (0x49787fef17af9924),
+      UINT64_C (0x03219a39ee587a30), UINT64_C (0xebe9ea2adf4321c7),
+      UINT64_C (0x804456af10f5fb53), UINT64_C (0xd74bbe77e6116ac7),
+      UINT64_C (0x7c0828dd624ec390), UINT64_C (0x14a195640116f336),
+      UINT64_C (0x2eab8ca63ce802d7), UINT64_C (0xc6e57a78fbd986e0),
+      UINT64_C (0x58efc10b06a2068d), UINT64_C (0xabeeddb2dde06ff1),
+      UINT64_C (0x0b090a7560a968e3), UINT64_C (0x2cf9c8ca052f6e9f),
+      UINT64_C (0x116d0016cb948f09), UINT64_C (0xa59e0bd101731a28),
+      UINT64_C (0x63767572ae3d6174), UINT64_C (0xab4f6451cc1d45ec),
+      UINT64_C (0xc2a1e7b5b459aeb5), UINT64_C (0x2472f6207c2d0484),
+      UINT64_C (0xe699ed85b0dfb40d), UINT64_C (0xd4347f66ec8941c3),
+      UINT64_C (0xf4d14597e660f855), UINT64_C (0x8b889d624d44885d),
+      UINT64_C (0x258e5a80c7204c4b), UINT64_C (0xaf0c317d32adaa8a),
+      UINT64_C (0x9c4cd6257c5a3603), UINT64_C (0xeb3593803173e0ce),
+      UINT64_C (0x36f60e2ba4fa6800), UINT64_C (0x38b6525c21a42b0e),
+      UINT64_C (0xf4f5d05c10cab243), UINT64_C (0xcf3f4688801eb9aa),
+      UINT64_C (0x1ddc0325259b27de), UINT64_C (0xb9571fa04dc089c8),
+      UINT64_C (0xd7504dfa8816edbb), UINT64_C (0x1fe2cca76517db90),
+      UINT64_C (0x261e4e4c0a333a9d), UINT64_C (0x219b97e26ffc81bd),
+      UINT64_C (0x66b4835d9eafea22), UINT64_C (0x4cc317fb9cddd023),
+      UINT64_C (0x50b704cab602c329), UINT64_C (0xedb454e7badc0805),
+      UINT64_C (0x9e17e49642a3e4c1), UINT64_C (0x66c1a2a1a60cd889),
+      UINT64_C (0x7983eed3740847d5), UINT64_C (0x298af231c85bafab),
+      UINT64_C (0x2680b122baa28d97), UINT64_C (0x734de8181f6ec39a),
+      UINT64_C (0x53898e4c3910da55), UINT64_C (0x1761f93a44d5aefe),
+      UINT64_C (0xe4dbf0634473f5d2), UINT64_C (0x4ed0fe7e9dc91335),
+      UINT64_C (0xd18d8549d140caea), UINT64_C (0x1cfc8bed0d681639),
+      UINT64_C (0xca1e3785a9e724e5), UINT64_C (0xb67c1fa481680af8),
+      UINT64_C (0xdfea21ea9e7557e3), UINT64_C (0xd6b6d0ecc617c699),
+      UINT64_C (0xfa7e393983325753), UINT64_C (0xa09e8c8c35ab96de),
+      UINT64_C (0x8fe88b57305e2ab6), UINT64_C (0x89039d79d6fc5c5c),
+      UINT64_C (0x9bfb227ebdf4c5ce), UINT64_C (0x7f7cc39420a3a545),
+      UINT64_C (0x3f6c6af859d80055), UINT64_C (0xc8763c5b08d1908c),
+      UINT64_C (0x469356c504ec9f9d), UINT64_C (0x26e6db8ffdf5adfe),
+      UINT64_C (0x3a938fee32d29981), UINT64_C (0x2c5e9deb57ef4743),
+      UINT64_C (0x1e99b96e70a9be8b), UINT64_C (0x764dbeae7fa4f3a6),
+      UINT64_C (0xaac40a2703d9bea0), UINT64_C (0x1a8c1e992b941148),
+      UINT64_C (0x73aa8a564fb7ac9e), UINT64_C (0x604d51b25fbf70e2),
+      UINT64_C (0xdd69a0d8ab3b546d), UINT64_C (0x65ca5b96b7552210),
+      UINT64_C (0x2fd7e4b9e72cd38c), UINT64_C (0x51d2b1ab2ddfb636),
+      UINT64_C (0x9d1d84fcce371425), UINT64_C (0xa44cfe79ae538bbe),
+      UINT64_C (0xde68a2355b93cae6), UINT64_C (0x9fc10d0f989993e0),
+      UINT64_C (0x94ebc8abcfb56dae), UINT64_C (0xd7a023a73260b45c),
+      UINT64_C (0x72c8834a5957b511), UINT64_C (0x8f8419a348f296bf),
+      UINT64_C (0x1e152328f3318dea), UINT64_C (0x4838d65f6ef6748f),
+      UINT64_C (0xd6bf7baee43cac40), UINT64_C (0x13328503df48229f),
+      UINT64_C (0x7440fb816508c4fe), UINT64_C (0x9d266d6a1cc0542c),
+      UINT64_C (0x4dda48153c94938a), UINT64_C (0x74c04bf1790c0efe),
+      UINT64_C (0xe1925c71285279f5), UINT64_C (0x8a8e849eb32781a5),
+      UINT64_C (0x073973751f12dd5e), UINT64_C (0xa319ce15b0b4db31),
+      UINT64_C (0x6dd856d94d259236), UINT64_C (0x67378d8eccef96cb),
+      UINT64_C (0x9fc477de4ed681da), UINT64_C (0xf3b8b6675a6507ff),
+      UINT64_C (0xc3a9dc228caac9e9), UINT64_C (0xc37b45b3f8d6f2ba),
+      UINT64_C (0xb559eb1d04e5e932), UINT64_C (0x1b0cab936e65c744),
+      UINT64_C (0xaf08da9177dda93d), UINT64_C (0xac12fb171817eee7),
+      UINT64_C (0x1fff7ac80904bf45), UINT64_C (0xa9119b60369ffebd),
+      UINT64_C (0xbfced1b0048eac50), UINT64_C (0xb67b7896167b4c84),
+      UINT64_C (0x9b3cdb65f82ca382), UINT64_C (0xdbc27ab5447822bf),
+      UINT64_C (0x10dcd78e3851a492), UINT64_C (0xb438c2b67f98e5e9),
+      UINT64_C (0x43954b3252dc25e5), UINT64_C (0xab9090168dd05f34),
+      UINT64_C (0xce68341f79893389), UINT64_C (0x36833336d068f707),
+      UINT64_C (0xdcdd7d20903d0c25), UINT64_C (0xda3a361b1c5157b1),
+      UINT64_C (0x7f9d1a2e1ebe1327), UINT64_C (0x5d0a12f27ad310d1),
+      UINT64_C (0x3bc36e078f7515d7), UINT64_C (0x4da8979a0041e8a9),
+      UINT64_C (0x950113646d1d6e03), UINT64_C (0x7b4a38e32537df62),
+      UINT64_C (0x8a1b083821f40cb4), UINT64_C (0x3d5774a11d31ab39),
+      UINT64_C (0x7a76956c3eafb413), UINT64_C (0x7f5126dbba5e0ca7),
+      UINT64_C (0x12153635b2c0cf57), UINT64_C (0x7b3f0195fc6f290f),
+      UINT64_C (0x5544f7d774b14aef), UINT64_C (0x56c074a581ea17fe),
+      UINT64_C (0xe7f28ecd2d49eecd), UINT64_C (0xe479ee5b9930578c),
+      UINT64_C (0x9ff38fed72e9052f), UINT64_C (0x9f65789a6509a440),
+      UINT64_C (0x0981dcd296a8736d), UINT64_C (0x5873888850659ae7),
+      UINT64_C (0xc678b6d860284a1c), UINT64_C (0x63e22c147b9c3403),
+      UINT64_C (0x92fae24291f2b3f1), UINT64_C (0x829626e3892d95d7),
+      UINT64_C (0xcffe1939438e9b24), UINT64_C (0x79999cdff70902cb),
+      UINT64_C (0x8547eddfb81ccb94), UINT64_C (0x7b77497b32503b12),
+      UINT64_C (0x97fcaacbf030bc24), UINT64_C (0x6ced1983376fa72b),
+      UINT64_C (0x7e75d99d94a70f4d), UINT64_C (0xd2733c4335c6a72f),
+      UINT64_C (0xdbc0d2b6ab90a559), UINT64_C (0x94628d38d0c20584),
+      UINT64_C (0x64972d68dee33360), UINT64_C (0xb9c11d5b1e43a07e),
+      UINT64_C (0x2de0966daf2f8b1c), UINT64_C (0x2e18bc1ad9704a68),
+      UINT64_C (0xd4dba84729af48ad), UINT64_C (0xb7a0b174cff6f36e),
+      UINT64_C (0xe94c39a54a98307f), UINT64_C (0xaa70b5b4f89695a2),
+      UINT64_C (0x3bdbb92c43b17f26), UINT64_C (0xcccb7005c6b9c28d),
+      UINT64_C (0x18a6a990c8b35ebd), UINT64_C (0xfc7c95d827357afa),
+      UINT64_C (0x1fca8a92fd719f85), UINT64_C (0x1dd01aafcd53486a),
+      UINT64_C (0x49353fea39ba63b1), UINT64_C (0xf85b2b4fbcde44b7),
+      UINT64_C (0xbe7444e39328a0ac), UINT64_C (0x3e2b8bcbf016d66d),
+      UINT64_C (0x964e915cd5e2b207), UINT64_C (0x1725cabfcb045b00),
+      UINT64_C (0x7fbf21ec8a1f45ec), UINT64_C (0x11317ba87905e790),
+      UINT64_C (0x2fe4b17170e59750), UINT64_C (0xe8d9ecbe2cf3d73f),
+      UINT64_C (0xb57d2e985e1419c7), UINT64_C (0x0572b974f03ce0bb),
+      UINT64_C (0xa8d7e4dab780a08d), UINT64_C (0x4715ed43e8a45c0a),
+      UINT64_C (0xc330de426430f69d), UINT64_C (0x23b70edb1955c4bf),
+      UINT64_C (0x098954d51fff6580), UINT64_C (0x8107fccf064fcf56),
+      UINT64_C (0x852f54934da55cc9), UINT64_C (0x09c7e552bc76492f),
+      UINT64_C (0xe9f6760e32cd8021), UINT64_C (0xa3bc941d0a5061cb),
+      UINT64_C (0xba89142e007503b8), UINT64_C (0xdc842b7e2819e230),
+      UINT64_C (0xbbe83f4ecc2bdecb), UINT64_C (0xcd454f8f19c5126a),
+      UINT64_C (0xc62c58f97dd949bf), UINT64_C (0x693501d628297551),
+      UINT64_C (0xb9ab4ce57f2d34f3), UINT64_C (0x9255abb50d532280),
+      UINT64_C (0xebfafa33d7254b59), UINT64_C (0xe9f6082b05542e4e),
+      UINT64_C (0x35dd37d5871448af), UINT64_C (0xb03031a8b4516e84),
+      UINT64_C (0xb3f256d8aca0b0b9), UINT64_C (0x0fd22063edc29fca),
+      UINT64_C (0xd9a11fbb3d9808e4), UINT64_C (0x3a9bf55ba91f81ca),
+      UINT64_C (0xc8c93882f9475f5f), UINT64_C (0x947ae053ee56e63c),
+      UINT64_C (0xc7d9f16864a76e94), UINT64_C (0x7bd94e1d8e17debc),
+      UINT64_C (0xd873db391292ed4f), UINT64_C (0x30f5611484119414),
+      UINT64_C (0x565c31f7de89ea27), UINT64_C (0xd0e4366228b03343),
+      UINT64_C (0x325928ee6e6f8794), UINT64_C (0x6f423357e7c6a9f9),
+      UINT64_C (0x99170a5dc3115544), UINT64_C (0x59b97885e2f2ea28),
+      UINT64_C (0xbc4097b116c524d2), UINT64_C (0x7a13f18bbedc4ff5),
+      UINT64_C (0x071582401c38434d), UINT64_C (0xb422061193d6f6a7),
+      UINT64_C (0xb4b81b3fa97511e2), UINT64_C (0x65d34954daf3cebd),
+      UINT64_C (0xb344c470397bba52), UINT64_C (0xbac7a9a18531294b),
+      UINT64_C (0xecb53939887e8175), UINT64_C (0x565601c0364e3228),
+      UINT64_C (0xef1955914b609f93), UINT64_C (0x16f50edf91e513af),
+      UINT64_C (0x56963b0dca418fc0), UINT64_C (0xd60f6dcedc314222),
+      UINT64_C (0x364f6ffa464ee52e), UINT64_C (0x6c3b8e3e336139d3),
+      UINT64_C (0xf943aee7febf21b8), UINT64_C (0x088e049589c432e0),
+      UINT64_C (0xd49503536abca345), UINT64_C (0x3a6c27934e31188a),
+      UINT64_C (0x957baf61700cff4e), UINT64_C (0x37624ae5a48fa6e9),
+      UINT64_C (0x501f65edb3034d07), UINT64_C (0x907f30421d78c5de),
+      UINT64_C (0x1a804aadb9cfa741), UINT64_C (0x0ce2a38c344a6eed),
+      UINT64_C (0xd363eff5f0977996), UINT64_C (0x2cd16e2abd791e33),
+      UINT64_C (0x58627e1a149bba21), UINT64_C (0x7f9b6af1ebf78baf)
+    },
+    {
+      UINT64_C (0xd20d8c88c8ffe65f), UINT64_C (0x917f1dd5f8886c61),
+      UINT64_C (0x56986e2ef3ed091b), UINT64_C (0x5fa7867caf35e149),
+      UINT64_C (0x81a1549fd6573da5), UINT64_C (0x96fbf83a12884624),
+      UINT64_C (0xe728e8c83c334074), UINT64_C (0xf1bcc3d275afe51a),
+      UINT64_C (0x71f1ce2490d20b07), UINT64_C (0xe6c42178c4bbb92e),
+      UINT64_C (0x0a9c32d5eae45305), UINT64_C (0x0c335248857fa9e7),
+      UINT64_C (0x142de49fff7a7c3d), UINT64_C (0x64a53dc924fe7ac9),
+      UINT64_C (0x9f6a419d382595f4), UINT64_C (0x150f361dab9dec26),
+      UINT64_C (0xc61bb3a141e50e8c), UINT64_C (0x2785338347f2ba08),
+      UINT64_C (0x7ca9723fbb2e8988), UINT64_C (0xce2f8642ca0712dc),
+      UINT64_C (0x59300222b4561e00), UINT64_C (0xc2b5a03f71471a6f),
+      UINT64_C (0xd5f9e858292504d5), UINT64_C (0x65fa4f227a2b6d79),
+      UINT64_C (0x93cbe0b699c2585d), UINT64_C (0x1d95b0a5fcf90bc6),
+      UINT64_C (0x17efee45b0dee640), UINT64_C (0x9e4c1269baa4bf37),
+      UINT64_C (0xd79476a84ee20d06), UINT64_C (0x0a56a5f0bfe39272),
+      UINT64_C (0x7eba726d8c94094b), UINT64_C (0x5e5637885f29bc2b),
+      UINT64_C (0xd586bd01c5c217f6), UINT64_C (0x233003b5a6cfe6ad),
+      UINT64_C (0x24c0e332b70019b0), UINT64_C (0x9da058c67844f20c),
+      UINT64_C (0xe4d9429322cd065a), UINT64_C (0x1fab64ea29a2ddf7),
+      UINT64_C (0x8af38731c02ba980), UINT64_C (0x7dc7785b8efdfc80),
+      UINT64_C (0x486289ddcc3d6780), UINT64_C (0x222bbfae61725606),
+      UINT64_C (0x2bc60a63a6f3b3f2), UINT64_C (0x177e00f9fc32f791),
+      UINT64_C (0x522e23f3925e319e), UINT64_C (0x9c2ed44081ce5fbd),
+      UINT64_C (0x964781ce734b3c84), UINT64_C (0xf05d129681949a4c),
+      UINT64_C (0x046e3ecaaf453ce9), UINT64_C (0x962aceefa82e1c84),
+      UINT64_C (0xf5b4b0b0d2deeeb4), UINT64_C (0x1af3dbe25d8f45da),
+      UINT64_C (0xf9f4892ed96bd438), UINT64_C (0xc4c118bfe78feaae),
+      UINT64_C (0x07a69afdcc42261a), UINT64_C (0xf8549e1a3aa5e00d),
+      UINT64_C (0x2102ae466ebb1148), UINT64_C (0xe87fbb46217a360e),
+      UINT64_C (0x310cb380db6f7503), UINT64_C (0xb5fdfc5d3132c498),
+      UINT64_C (0xdaf8e9829fe96b5f), UINT64_C (0xcac09afbddd2cdb4),
+      UINT64_C (0xb862225b055b6960), UINT64_C (0x55b6344cf97aafae),
+      UINT64_C (0xff577222c14f0a3a), UINT64_C (0x4e4b705b92903ba4),
+      UINT64_C (0x730499af921549ff), UINT64_C (0x13ae978d09fe5557),
+      UINT64_C (0xd9e92aa246bf719e), UINT64_C (0x7a4c10ec2158c4a6),
+      UINT64_C (0x49cad48cebf4a71e), UINT64_C (0xcf05daf5ac8d77b0),
+      UINT64_C (0xabbdcdd7ed5c0860), UINT64_C (0x9853eab63b5e0b35),
+      UINT64_C (0x352787baa0d7c22f), UINT64_C (0xc7f6aa2de59aea61),
+      UINT64_C (0x03727073c2e134b1), UINT64_C (0x5a0f544dd2b1fb18),
+      UINT64_C (0x74f85198b05a2e7d), UINT64_C (0x963ef2c96b33be31),
+      UINT64_C (0x4659d2b743848a2c), UINT64_C (0x19ebb029435dcb0f),
+      UINT64_C (0x4e9d2827355fc492), UINT64_C (0xccec0a73b49c9921),
+      UINT64_C (0x46c9feb55d120902), UINT64_C (0x8d2636b81555a786),
+      UINT64_C (0x30c05b1ba332f41c), UINT64_C (0xf6f7fd1431714200),
+      UINT64_C (0x1a4ff12616eefc89), UINT64_C (0x990a98fd5071d263),
+      UINT64_C (0x84547ddc3e203c94), UINT64_C (0x07a3aec79624c7da),
+      UINT64_C (0x8a328a1cedfe552c), UINT64_C (0xd1e649de1e7f268b),
+      UINT64_C (0x2d8d5432157064c8), UINT64_C (0x4ae7d6a36eb5dbcb),
+      UINT64_C (0x57e3306d881edb4f), UINT64_C (0x0a804d18b7097475),
+      UINT64_C (0xe74733427b72f0c1), UINT64_C (0x24b33c9d7ed25117),
+      UINT64_C (0xe805a1e290cf2456), UINT64_C (0x3b544ebe544c19f9),
+      UINT64_C (0x3e666e6f69ae2c15), UINT64_C (0xfb152fe3ff26da89),
+      UINT64_C (0xb49b52e587a1ee60), UINT64_C (0xac042e70f8b383f2),
+      UINT64_C (0x89c350c893ae7dc1), UINT64_C (0xb592bf39b0364963),
+      UINT64_C (0x190e714fada5156e), UINT64_C (0xec8177f83f900978),
+      UINT64_C (0x91b534f885818a06), UINT64_C (0x81536d601170fc20),
+      UINT64_C (0xd4c718bc4ae8ae5f), UINT64_C (0x9eedeca8e272b933),
+      UINT64_C (0x10e8b35af3eeab37), UINT64_C (0x0e09b88e1914f7af),
+      UINT64_C (0x3fa9ddfb67e2f199), UINT64_C (0xb10bb459132d0a26),
+      UINT64_C (0x2c046f22062dc67d), UINT64_C (0x5e90277e7cb39e2d),
+      UINT64_C (0xd6b04d3b7651dd7e), UINT64_C (0xe34a1d250e7a8d6b),
+      UINT64_C (0x53c065c6c8e63528), UINT64_C (0x1bdea12e35f6a8c9),
+      UINT64_C (0x21874b8b4d2dbc4f), UINT64_C (0x3a88a0fbbcb05c63),
+      UINT64_C (0x43ed7f5a0fae657d), UINT64_C (0x230e343dfba08d33),
+      UINT64_C (0xb5b4071dbfc73a66), UINT64_C (0x8f9887e6078735a1),
+      UINT64_C (0x08de8a1c7797da9b), UINT64_C (0xfcb6be43a9f2fe9b),
+      UINT64_C (0x049a7f41061a9e60), UINT64_C (0x9f91508bffcfc14a),
+      UINT64_C (0xe3273522064480ca), UINT64_C (0xcd04f3ff001a4778),
+      UINT64_C (0x6bfa9aae5ec05779), UINT64_C (0x371f77e76bb8417e),
+      UINT64_C (0x3550c2321fd6109c), UINT64_C (0xfb4a3d794a9a80d2),
+      UINT64_C (0xf43c732873f24c13), UINT64_C (0xaa9119ff184cccf4),
+      UINT64_C (0xb69e38a8965c6b65), UINT64_C (0x1f2b1d1f15f6dc9c),
+      UINT64_C (0x67fef95d92607890), UINT64_C (0x31865ced6120f37d),
+      UINT64_C (0x3a6853c7e70757a7), UINT64_C (0x32ab0edb696703d3),
+      UINT64_C (0xee97f453f06791ed), UINT64_C (0x6dc93d9526a50e68),
+      UINT64_C (0x78edefd694af1eed), UINT64_C (0x9c1169fa2777b874),
+      UINT64_C (0x50065e535a213cf6), UINT64_C (0xde0c89a556b9ae70),
+      UINT64_C (0xd1e0ccd25bb9c169), UINT64_C (0x6b17b224bad6bf27),
+      UINT64_C (0x6b02e63195ad0cf8), UINT64_C (0x455a4b4cfe30e3f5),
+      UINT64_C (0x9338e69c052b8e7b), UINT64_C (0x5092ef950a16da0b),
+      UINT64_C (0x7c45d833aff07862), UINT64_C (0xa5b1cfdba0ab4067),
+      UINT64_C (0x6ad047c430a12104), UINT64_C (0x6c47bec883a7de39),
+      UINT64_C (0x944f6de09134dfb6), UINT64_C (0x9aeba33ac6ecc6b0),
+      UINT64_C (0x52e762596bf68235), UINT64_C (0x22af003ab672e811),
+      UINT64_C (0xb5635c95ff7296e2), UINT64_C (0xed2df21216235097),
+      UINT64_C (0x4a29c6465a314cd1), UINT64_C (0xd83cc2687a19255f),
+      UINT64_C (0x506c11b9d90e8b1d), UINT64_C (0x57277707199b8175),
+      UINT64_C (0xcaf21ecd4377b28c), UINT64_C (0xc0c0f5a60ef4cdcf),
+      UINT64_C (0x93b633abfa3469f8), UINT64_C (0xe846963877671a17),
+      UINT64_C (0x59ac2c7873f910a3), UINT64_C (0x660d3257380841ee),
+      UINT64_C (0xd813f2fab7f5c5ca), UINT64_C (0x4112cf68649a260e),
+      UINT64_C (0x443f64ec5a371195), UINT64_C (0xb0774d261cc609db),
+      UINT64_C (0x720bf5f26f4d2eaa), UINT64_C (0x1c2559e30f0946be),
+      UINT64_C (0xe328e230e3e2b3fb), UINT64_C (0x087e79e5a57d1d13),
+      UINT64_C (0x08dd9bdfd96b9f63), UINT64_C (0x64d0e29eea8838b3),
+      UINT64_C (0xddf957bc36d8b9ca), UINT64_C (0x6ffe73e81b637fb3),
+      UINT64_C (0x1a4e4822eb4d7a59), UINT64_C (0x5d94337fbfaf7f5b),
+      UINT64_C (0xd30c088ba61ea5ef), UINT64_C (0x9d765e419fb69f6d),
+      UINT64_C (0x9e21f4f903b33fd9), UINT64_C (0xb4d8f77bc3e56167),
+      UINT64_C (0x733ea705fae4fa77), UINT64_C (0xa4ec0132764ca04b),
+      UINT64_C (0x7976033a39f7d952), UINT64_C (0x106f72fe81e2c590),
+      UINT64_C (0x8c90fd9b083f4558), UINT64_C (0xfd080d236da814ba),
+      UINT64_C (0x7b64978555326f9f), UINT64_C (0x60e8ed72c0dff5d1),
+      UINT64_C (0xb063e962e045f54d), UINT64_C (0x959f587d507a8359),
+      UINT64_C (0x758f450c88572e0b), UINT64_C (0x1b6baca2ae4e125b),
+      UINT64_C (0x61cf4f94c97df93d), UINT64_C (0x2738259634305c14),
+      UINT64_C (0xd39bb9c3a48db6cf), UINT64_C (0x8215e577001332c8),
+      UINT64_C (0xa1082c0466df6c0a), UINT64_C (0xef02cdd06ffdb432),
+      UINT64_C (0xfc87614baf287e07), UINT64_C (0x240ab57a8b888b20),
+      UINT64_C (0xbf8d5108e27e0d48), UINT64_C (0x61bdd1307c66e300),
+      UINT64_C (0xb925a6cd0421aff3), UINT64_C (0x3e003e616a6591e9),
+      UINT64_C (0x94c3251f06f90cf3), UINT64_C (0xbf84470805e69b5f),
+      UINT64_C (0x98f076a4f7a2322e), UINT64_C (0x70cb6af7c2d5bcf0),
+      UINT64_C (0xb64be8d8b25396c1), UINT64_C (0xa9aa4d20db084e9b),
+      UINT64_C (0x2e6d02c36017f67f), UINT64_C (0xefed53d75fd64e6b),
+      UINT64_C (0xd9f1f30ccd97fb09), UINT64_C (0xa2ebee47e2fbfce1),
+      UINT64_C (0xb8d91274b9e9d4fb), UINT64_C (0x1db956e450275779),
+      UINT64_C (0x4fc8e9560f91b123), UINT64_C (0x63573ff03e224774),
+      UINT64_C (0x0647dfedcd894a29), UINT64_C (0x7884d9bc6cb569d8),
+      UINT64_C (0x7fba195410e5ca30), UINT64_C (0x106c09b972d2e822),
+      UINT64_C (0x241260ed4ad1e87d), UINT64_C (0x64c8e531bff53b55),
+      UINT64_C (0xca672b91e9e4fa16), UINT64_C (0x3871700761b3f743),
+      UINT64_C (0xf95cffa23af5f6f4), UINT64_C (0x8d14dedb30be846e),
+      UINT64_C (0x3b097adaf088f94e), UINT64_C (0x21e0bd5026c619bf),
+      UINT64_C (0x1bda0492e7e4586e), UINT64_C (0xd23c8e176d113600),
+      UINT64_C (0x252f59cf0d9f04bb), UINT64_C (0xb3598080ce64a656),
+      UINT64_C (0x993e1de72d36d310), UINT64_C (0xa2853b80f17f58ee),
+      UINT64_C (0x1877b51e57a764d5), UINT64_C (0x001f837cc7350524)
+    }
+   #endif
+  };
+
+int
+main (int argc, char **argv)
+{
+  unsigned int i;
+  isaac_word r[ISAAC_WORDS];
+  int iterations;
+
+  /* Seed with zeros, and discard the first buffer of output,
+     as that's what the standard programs do.  */
+  static struct isaac_state s;
+  isaac_seed (&s);
+  isaac_refill (&s, r);
+
+  for (i = 0; i < sizeof expected / sizeof expected[0]; i++)
+    {
+      isaac_refill (&s, r);
+      ASSERT (memcmp (r, expected[i], sizeof r) == 0);
+    }
+
+  /* If invoked with a positive argument, run a benchmark;
+     if with a negative, run a do-nothing benchmark.  */
+  for (iterations = argc <= 1 ? 0 : strtol (argv[1], NULL, 10);
+       iterations != 0;
+       iterations += (iterations < 0 ? 1 : -1))
+    if (0 <= iterations)
+      isaac_refill (&s, r);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-read-file.c b/gnulib-tests/test-read-file.c
new file mode 100644
index 0000000..930cf4a
--- /dev/null
+++ b/gnulib-tests/test-read-file.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2006-2007, 2010-2020 Free Software Foundation, Inc.
+ * Written by Simon Josefsson
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "read-file.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+#define FILE1 "/etc/resolv.conf"
+#define FILE2 "/dev/null"
+
+int
+main (void)
+{
+  struct stat statbuf;
+  int err = 0;
+
+  /* We can perform the test only if the file exists and is readable.
+     Test whether it exists, then assume it is world-readable.  */
+  if (stat (FILE1, &statbuf) >= 0)
+    {
+      size_t len;
+      char *out = read_file (FILE1, &len);
+
+      if (!out)
+        {
+          perror ("Could not read file");
+          err = 1;
+        }
+      else
+        {
+          if (out[len] != '\0')
+            {
+              perror ("BAD: out[len] not zero");
+              err = 1;
+            }
+
+          if (S_ISREG (statbuf.st_mode))
+            {
+              /* FILE1 is a regular file or a symlink to a regular file.  */
+              if (len != statbuf.st_size)
+                {
+                  fprintf (stderr, "Read %lu from %s...\n",
+                           (unsigned long) len, FILE1);
+                  err = 1;
+                }
+            }
+          else
+            {
+              /* Assume FILE1 is not empty.  */
+              if (len == 0)
+                {
+                  fprintf (stderr, "Read nothing from %s\n", FILE1);
+                  err = 1;
+                }
+            }
+          free (out);
+        }
+    }
+
+  /* We can perform the test only if the file exists and is readable.
+     Test whether it exists, then assume it is world-readable.  */
+  if (stat (FILE2, &statbuf) >= 0)
+    {
+      size_t len;
+      char *out = read_file (FILE2, &len);
+
+      if (!out)
+        {
+          perror ("Could not read file");
+          err = 1;
+        }
+      else
+        {
+          if (out[len] != '\0')
+            {
+              perror ("BAD: out[len] not zero");
+              err = 1;
+            }
+
+          /* /dev/null should always be empty.  Ignore statbuf.st_size, since it
+             is not a regular file.  */
+          if (len != 0)
+            {
+              fprintf (stderr, "Read %lu from %s...\n",
+                       (unsigned long) len, FILE2);
+              err = 1;
+            }
+          free (out);
+        }
+    }
+
+  return err;
+}
diff --git a/gnulib-tests/test-read.c b/gnulib-tests/test-read.c
new file mode 100644
index 0000000..872f34c
--- /dev/null
+++ b/gnulib-tests/test-read.c
@@ -0,0 +1,73 @@
+/* Test the read() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (read, ssize_t, (int, void *, size_t));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  const char *filename = "test-read.tmp";
+  int fd;
+
+  /* Create a file with a simple contents.  */
+  fd = open (filename, O_CREAT | O_WRONLY, 0600);
+  ASSERT (fd >= 0);
+  ASSERT (write (fd, "Hello World", 11) == 11);
+  ASSERT (close (fd) == 0);
+
+  /* Read from the middle of the file.  */
+  fd = open (filename, O_RDONLY);
+  ASSERT (fd >= 0);
+  ASSERT (lseek (fd, 6, SEEK_SET) == 6);
+  {
+    char buf[10];
+    ssize_t ret = read (fd, buf, 10);
+    ASSERT (ret == 5);
+    ASSERT (memcmp (buf, "World", 5) == 0);
+  }
+  ASSERT (close (fd) == 0);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    char byte;
+    errno = 0;
+    ASSERT (read (-1, &byte, 1) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    char byte;
+    close (99);
+    errno = 0;
+    ASSERT (read (99, &byte, 1) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Clean up.  */
+  unlink (filename);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-readlink.c b/gnulib-tests/test-readlink.c
new file mode 100644
index 0000000..c625e9b
--- /dev/null
+++ b/gnulib-tests/test-readlink.c
@@ -0,0 +1,48 @@
+/* Tests of readlink.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (readlink, ssize_t, (char const *, char *, size_t));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-readlink.t"
+
+#include "test-readlink.h"
+
+int
+main (void)
+{
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_readlink (readlink, true);
+}
diff --git a/gnulib-tests/test-readlink.h b/gnulib-tests/test-readlink.h
new file mode 100644
index 0000000..f2e7bd2
--- /dev/null
+++ b/gnulib-tests/test-readlink.h
@@ -0,0 +1,119 @@
+/* Tests of readlink.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+/* This file is designed to test both readlink(a,b,c) and
+   readlinkat(AT_FDCWD,a,b,c).  FUNC is the function to test.  Assumes
+   that BASE and ASSERT are already defined, and that appropriate
+   headers are already included.  If PRINT, warn before skipping
+   symlink tests with status 77.  */
+
+static int
+test_readlink (ssize_t (*func) (char const *, char *, size_t), bool print)
+{
+  char buf[80];
+
+  /* Sanity checks of failures.  Mingw lacks symlink, but readlink can
+     still distinguish between various errors.  */
+  memset (buf, 0xff, sizeof buf);
+  errno = 0;
+  ASSERT (func ("no_such", buf, sizeof buf) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("no_such/", buf, sizeof buf) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("", buf, sizeof buf) == -1);
+  ASSERT (errno == ENOENT || errno == EINVAL);
+  errno = 0;
+  ASSERT (func (".", buf, sizeof buf) == -1);
+  ASSERT (errno == EINVAL);
+  errno = 0;
+  ASSERT (func ("./", buf, sizeof buf) == -1);
+  ASSERT (errno == EINVAL);
+  ASSERT (close (creat (BASE "file", 0600)) == 0);
+  errno = 0;
+  ASSERT (func (BASE "file", buf, sizeof buf) == -1);
+  ASSERT (errno == EINVAL);
+  errno = 0;
+  ASSERT (func (BASE "file/", buf, sizeof buf) == -1);
+  ASSERT (errno == ENOTDIR || errno == EINVAL); /* AIX yields EINVAL */
+
+  /* Now test actual symlinks.  */
+  if (symlink (BASE "dir", BASE "link"))
+    {
+      ASSERT (unlink (BASE "file") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  errno = 0;
+  ASSERT (func (BASE "link/", buf, sizeof buf) == -1);
+  ASSERT (errno == EINVAL);
+  ASSERT (symlink (BASE "link", BASE "link2") == 0);
+  errno = 0;
+  ASSERT (func (BASE "link2/", buf, sizeof buf) == -1);
+  ASSERT (errno == EINVAL);
+  ASSERT (unlink (BASE "link2") == 0);
+  ASSERT (symlink (BASE "file", BASE "link2") == 0);
+  errno = 0;
+  ASSERT (func (BASE "link2/", buf, sizeof buf) == -1);
+  ASSERT (errno == ENOTDIR || errno == EINVAL); /* AIX yields EINVAL */
+  ASSERT (unlink (BASE "file") == 0);
+  ASSERT (unlink (BASE "link2") == 0);
+  {
+    /* Up till now, no readlink has been successful, so buf should be
+       unchanged.  */
+    int i;
+    for (i = 0; i < sizeof buf; i++)
+      ASSERT (buf[i] == (char) 0xff);
+  }
+  {
+    size_t len = strlen (BASE "dir");
+    /* When passing too small of a buffer, expect the truncated
+       length, or an ERANGE failure.  However, a size of 0 is not
+       portable enough to test.  */
+    ssize_t result;
+    errno = 0;
+    result = readlink (BASE "link", buf, 1);
+    if (result == -1)
+      {
+        ASSERT (errno == ERANGE);
+        ASSERT (buf[0] == (char) 0xff);
+      }
+    else
+      {
+        ASSERT (result == 1);
+        ASSERT (buf[0] == BASE[0]);
+      }
+    ASSERT (buf[1] == (char) 0xff);
+    ASSERT (func (BASE "link", buf, len) == len);
+    ASSERT (strncmp (buf, BASE "dir", len) == 0);
+    ASSERT (buf[len] == (char) 0xff);
+    ASSERT (func (BASE "link", buf, sizeof buf) == len);
+    ASSERT (strncmp (buf, BASE "dir", len) == 0);
+    /* POSIX says rest of buf is unspecified; but in practice, it is
+       either left alone, or NUL-terminated.  */
+    ASSERT (buf[len] == '\0' || buf[len] == (char) 0xff);
+  }
+  ASSERT (rmdir (BASE "dir") == 0);
+  ASSERT (unlink (BASE "link") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-readlinkat.c b/gnulib-tests/test-readlinkat.c
new file mode 100644
index 0000000..03b9000
--- /dev/null
+++ b/gnulib-tests/test-readlinkat.c
@@ -0,0 +1,121 @@
+/* Tests of readlinkat.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (readlinkat, ssize_t, (int, char const *, char *, size_t));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#ifndef HAVE_SYMLINK
+# define HAVE_SYMLINK 0
+#endif
+
+#define BASE "test-readlinkat.t"
+
+#include "test-readlink.h"
+
+static int dfd = AT_FDCWD;
+
+static ssize_t
+do_readlink (char const *name, char *buf, size_t len)
+{
+  return readlinkat (dfd, name, buf, len);
+}
+
+int
+main (void)
+{
+  char buf[80];
+  int result;
+
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (readlinkat (-1, "foo", buf, sizeof buf) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (readlinkat (99, "foo", buf, sizeof buf) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Perform same checks as counterpart functions.  */
+  result = test_readlink (do_readlink, false);
+  dfd = openat (AT_FDCWD, ".", O_RDONLY);
+  ASSERT (0 <= dfd);
+  ASSERT (test_readlink (do_readlink, false) == result);
+
+  /* Now perform some cross-directory checks.  Skip everything else on
+     mingw.  */
+  if (HAVE_SYMLINK)
+    {
+      const char *contents = "don't matter!";
+      ssize_t exp = strlen (contents);
+
+      /* Create link while cwd is '.', then read it in '..'.  */
+      ASSERT (symlinkat (contents, AT_FDCWD, BASE "link") == 0);
+      errno = 0;
+      ASSERT (symlinkat (contents, dfd, BASE "link") == -1);
+      ASSERT (errno == EEXIST);
+      ASSERT (chdir ("..") == 0);
+      errno = 0;
+      ASSERT (readlinkat (AT_FDCWD, BASE "link", buf, sizeof buf) == -1);
+      ASSERT (errno == ENOENT);
+      ASSERT (readlinkat (dfd, BASE "link", buf, sizeof buf) == exp);
+      ASSERT (strncmp (contents, buf, exp) == 0);
+      ASSERT (unlinkat (dfd, BASE "link", 0) == 0);
+
+      /* Create link while cwd is '..', then read it in '.'.  */
+      ASSERT (symlinkat (contents, dfd, BASE "link") == 0);
+      ASSERT (fchdir (dfd) == 0);
+      errno = 0;
+      ASSERT (symlinkat (contents, AT_FDCWD, BASE "link") == -1);
+      ASSERT (errno == EEXIST);
+      buf[0] = '\0';
+      ASSERT (readlinkat (AT_FDCWD, BASE "link", buf, sizeof buf) == exp);
+      ASSERT (strncmp (contents, buf, exp) == 0);
+      buf[0] = '\0';
+      ASSERT (readlinkat (dfd, BASE "link", buf, sizeof buf) == exp);
+      ASSERT (strncmp (contents, buf, exp) == 0);
+      ASSERT (unlink (BASE "link") == 0);
+    }
+
+  ASSERT (close (dfd) == 0);
+  if (result == 77)
+    fputs ("skipping test: symlinks not supported on this file system\n",
+           stderr);
+  return result;
+}
diff --git a/gnulib-tests/test-readtokens.c b/gnulib-tests/test-readtokens.c
new file mode 100644
index 0000000..a153983
--- /dev/null
+++ b/gnulib-tests/test-readtokens.c
@@ -0,0 +1,98 @@
+/* Test the readtokens module.
+   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+#include <stdbool.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "readtokens.h"
+#include "closeout.h"
+#include "macros.h"
+
+static void
+basic (void)
+{
+  char const *filename = "in.827";
+  int fd = open (filename, O_CREAT | O_WRONLY, 0600);
+  ASSERT (fd >= 0);
+  ASSERT (write (fd, "a|b;c+d", 7) == 7);
+  ASSERT (close (fd) == 0);
+
+  {
+    token_buffer tb;
+    FILE *fp = fopen (filename, "r");
+    ASSERT (fp);
+
+    init_tokenbuffer (&tb);
+    ASSERT (readtoken (fp, "|;", 2, &tb)  == 1 && tb.buffer[0] == 'a');
+    ASSERT (readtoken (fp, "|;", 2, &tb) == 1 && tb.buffer[0] == 'b');
+    ASSERT (readtoken (fp, "+", 1, &tb)  == 1 && tb.buffer[0] == 'c');
+    ASSERT (readtoken (fp, "-", 1, &tb) == 1 && tb.buffer[0] == 'd');
+    ASSERT (readtoken (fp, "%", 0, &tb) == (size_t) -1);
+    ASSERT ( ! ferror (fp));
+    ASSERT (fclose (fp) == 0);
+  }
+}
+
+int
+main (int argc, char **argv)
+{
+  token_buffer tb;
+  char const *delim;
+  size_t delim_len;
+
+  atexit (close_stdout);
+
+  if (argc == 1)
+    {
+      basic ();
+      return 0;
+    }
+
+  init_tokenbuffer (&tb);
+
+  if (argc != 2)
+    return 99;
+
+  delim = argv[1];
+  delim_len = strlen (delim);
+
+  if (STREQ (delim, "\\0"))
+    {
+      delim = "";
+      delim_len = 1;
+    }
+
+  while (1)
+    {
+      size_t token_length = readtoken (stdin, delim, delim_len, &tb);
+      if (token_length == (size_t) -1)
+        break;
+      fwrite (tb.buffer, 1, token_length, stdout);
+      putchar (':');
+    }
+  putchar ('\n');
+  free (tb.buffer);
+
+  ASSERT ( ! ferror (stdin));
+
+  return 0;
+}
diff --git a/gnulib-tests/test-readtokens.sh b/gnulib-tests/test-readtokens.sh
new file mode 100755
index 0000000..4c7821f
--- /dev/null
+++ b/gnulib-tests/test-readtokens.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+. "${srcdir=.}/init.sh"; path_prepend_ .
+
+fail=0
+
+${CHECKER} test-readtokens || fail=1
+
+# Simplest case.
+echo a:b:c: > exp || fail=1
+printf a:b:c | ${CHECKER} test-readtokens : > out 2>&1 || fail=1
+compare exp out || fail=1
+
+# Use NUL as the delimiter.
+echo a:b:c: > exp || fail=1
+printf 'a\0b\0c' | ${CHECKER} test-readtokens '\0' > out 2>&1 || fail=1
+compare exp out || fail=1
+
+# Two delimiter bytes, and adjacent delimiters in the input.
+echo a:b:c: > exp || fail=1
+printf a:-:b-:c:: | ${CHECKER} test-readtokens :- > out 2>&1 || fail=1
+compare exp out || fail=1
+
+Exit $fail
diff --git a/gnulib-tests/test-realloc-gnu.c b/gnulib-tests/test-realloc-gnu.c
new file mode 100644
index 0000000..4e110fc
--- /dev/null
+++ b/gnulib-tests/test-realloc-gnu.c
@@ -0,0 +1,31 @@
+/* Test of realloc function.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+int
+main ()
+{
+  /* Check that realloc (NULL, 0) is not a NULL pointer.  */
+  char *p = realloc (NULL, 0);
+  if (p == NULL)
+    return 1;
+
+  free (p);
+  return 0;
+}
diff --git a/gnulib-tests/test-regex.c b/gnulib-tests/test-regex.c
new file mode 100644
index 0000000..d3f429a
--- /dev/null
+++ b/gnulib-tests/test-regex.c
@@ -0,0 +1,264 @@
+/* Test regular expressions
+   Copyright 1996-2001, 2003-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "regex.h"
+
+#include <locale.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#if HAVE_DECL_ALARM
+# include <unistd.h>
+# include <signal.h>
+#endif
+
+#include "localcharset.h"
+
+int
+main (void)
+{
+  int result = 0;
+  static struct re_pattern_buffer regex;
+  unsigned char folded_chars[UCHAR_MAX + 1];
+  int i;
+  const char *s;
+  struct re_registers regs;
+
+#if HAVE_DECL_ALARM
+  /* Some builds of glibc go into an infinite loop on this test.  */
+  int alarm_value = 2;
+  signal (SIGALRM, SIG_DFL);
+  alarm (alarm_value);
+#endif
+  if (setlocale (LC_ALL, "en_US.UTF-8"))
+    {
+      {
+        /* https://sourceware.org/ml/libc-hacker/2006-09/msg00008.html
+           This test needs valgrind to catch the bug on Debian
+           GNU/Linux 3.1 x86, but it might catch the bug better
+           on other platforms and it shouldn't hurt to try the
+           test here.  */
+        static char const pat[] = "insert into";
+        static char const data[] =
+          "\xFF\0\x12\xA2\xAA\xC4\xB1,K\x12\xC4\xB1*\xACK";
+        re_set_syntax (RE_SYNTAX_GREP | RE_HAT_LISTS_NOT_NEWLINE
+                       | RE_ICASE);
+        memset (&regex, 0, sizeof regex);
+        s = re_compile_pattern (pat, sizeof pat - 1, &regex);
+        if (s)
+          result |= 1;
+        else
+          {
+            memset (&regs, 0, sizeof regs);
+            if (re_search (&regex, data, sizeof data - 1,
+                           0, sizeof data - 1, &regs)
+                != -1)
+              result |= 1;
+            regfree (&regex);
+            free (regs.start);
+            free (regs.end);
+          }
+      }
+
+      /* Check whether it's really a UTF-8 locale.
+         On mingw, the setlocale call succeeds but returns
+         "English_United States.1252", with locale_charset() returning
+         "CP1252".  */
+      if (strcmp (locale_charset (), "UTF-8") == 0)
+        {
+          /* This test is from glibc bug 15078.
+             The test case is from Andreas Schwab in
+             <https://sourceware.org/ml/libc-alpha/2013-01/msg00967.html>.
+          */
+          static char const pat[] = "[^x]x";
+          static char const data[] =
+            /* <U1000><U103B><U103D><U1014><U103A><U102F><U1015><U103A> */
+            "\xe1\x80\x80"
+            "\xe1\x80\xbb"
+            "\xe1\x80\xbd"
+            "\xe1\x80\x94"
+            "\xe1\x80\xba"
+            "\xe1\x80\xaf"
+            "\xe1\x80\x95"
+            "\xe1\x80\xba"
+            "x";
+          re_set_syntax (0);
+          memset (&regex, 0, sizeof regex);
+          s = re_compile_pattern (pat, sizeof pat - 1, &regex);
+          if (s)
+            result |= 1;
+          else
+            {
+              memset (&regs, 0, sizeof regs);
+              i = re_search (&regex, data, sizeof data - 1,
+                             0, sizeof data - 1, 0);
+              if (i != 0 && i != 21)
+                result |= 1;
+              regfree (&regex);
+              free (regs.start);
+              free (regs.end);
+            }
+        }
+
+      if (! setlocale (LC_ALL, "C"))
+        return 1;
+    }
+
+  /* This test is from glibc bug 3957, reported by Andrew Mackey.  */
+  re_set_syntax (RE_SYNTAX_EGREP | RE_HAT_LISTS_NOT_NEWLINE);
+  memset (&regex, 0, sizeof regex);
+  s = re_compile_pattern ("a[^x]b", 6, &regex);
+  if (s)
+    result |= 2;
+  /* This should fail, but succeeds for glibc-2.5.  */
+  else
+    {
+      memset (&regs, 0, sizeof regs);
+      if (re_search (&regex, "a\nb", 3, 0, 3, &regs) != -1)
+        result |= 2;
+      regfree (&regex);
+      free (regs.start);
+      free (regs.end);
+    }
+
+  /* This regular expression is from Spencer ere test number 75
+     in grep-2.3.  */
+  re_set_syntax (RE_SYNTAX_POSIX_EGREP);
+  memset (&regex, 0, sizeof regex);
+  for (i = 0; i <= UCHAR_MAX; i++)
+    folded_chars[i] = i;
+  regex.translate = folded_chars;
+  s = re_compile_pattern ("a[[:@:>@:]]b\n", 11, &regex);
+  /* This should fail with _Invalid character class name_ error.  */
+  if (!s)
+    {
+      result |= 4;
+      regfree (&regex);
+    }
+
+  /* Ensure that [b-a] is diagnosed as invalid, when
+     using RE_NO_EMPTY_RANGES. */
+  re_set_syntax (RE_SYNTAX_POSIX_EGREP | RE_NO_EMPTY_RANGES);
+  memset (&regex, 0, sizeof regex);
+  s = re_compile_pattern ("a[b-a]", 6, &regex);
+  if (s == 0)
+    {
+      result |= 8;
+      regfree (&regex);
+    }
+
+  /* This should succeed, but does not for glibc-2.1.3.  */
+  memset (&regex, 0, sizeof regex);
+  s = re_compile_pattern ("{1", 2, &regex);
+  if (s)
+    result |= 8;
+  else
+    regfree (&regex);
+
+  /* The following example is derived from a problem report
+     against gawk from Jorge Stolfi <stolfi@ic.unicamp.br>.  */
+  memset (&regex, 0, sizeof regex);
+  s = re_compile_pattern ("[an\371]*n", 7, &regex);
+  if (s)
+    result |= 8;
+  /* This should match, but does not for glibc-2.2.1.  */
+  else
+    {
+      memset (&regs, 0, sizeof regs);
+      if (re_match (&regex, "an", 2, 0, &regs) != 2)
+        result |= 8;
+      regfree (&regex);
+      free (regs.start);
+      free (regs.end);
+    }
+
+  memset (&regex, 0, sizeof regex);
+  s = re_compile_pattern ("x", 1, &regex);
+  if (s)
+    result |= 8;
+  /* glibc-2.2.93 does not work with a negative RANGE argument.  */
+  else
+    {
+      memset (&regs, 0, sizeof regs);
+      if (re_search (&regex, "wxy", 3, 2, -2, &regs) != 1)
+        result |= 8;
+      regfree (&regex);
+      free (regs.start);
+      free (regs.end);
+    }
+
+  /* The version of regex.c in older versions of gnulib
+     ignored RE_ICASE.  Detect that problem too.  */
+  re_set_syntax (RE_SYNTAX_EMACS | RE_ICASE);
+  memset (&regex, 0, sizeof regex);
+  s = re_compile_pattern ("x", 1, &regex);
+  if (s)
+    result |= 16;
+  else
+    {
+      memset (&regs, 0, sizeof regs);
+      if (re_search (&regex, "WXY", 3, 0, 3, &regs) < 0)
+        result |= 16;
+      regfree (&regex);
+      free (regs.start);
+      free (regs.end);
+    }
+
+  /* Catch a bug reported by Vin Shelton in
+     https://lists.gnu.org/r/bug-coreutils/2007-06/msg00089.html
+     */
+  re_set_syntax (RE_SYNTAX_POSIX_BASIC
+                 & ~RE_CONTEXT_INVALID_DUP
+                 & ~RE_NO_EMPTY_RANGES);
+  memset (&regex, 0, sizeof regex);
+  s = re_compile_pattern ("[[:alnum:]_-]\\\\+$", 16, &regex);
+  if (s)
+    result |= 32;
+  else
+    regfree (&regex);
+
+  /* REG_STARTEND was added to glibc on 2004-01-15.
+     Reject older versions.  */
+  if (! REG_STARTEND)
+    result |= 64;
+
+  /* Matching with the compiled form of this regexp would provoke
+     an assertion failure prior to glibc-2.28:
+       regexec.c:1375: pop_fail_stack: Assertion 'num >= 0' failed
+     With glibc-2.28, compilation fails and reports the invalid
+     back reference.  */
+  re_set_syntax (RE_SYNTAX_POSIX_EGREP);
+  memset (&regex, 0, sizeof regex);
+  s = re_compile_pattern ("0|()0|\\1|0", 10, &regex);
+  if (!s || strcmp (s, "Invalid back reference"))
+    result |= 64;
+
+#if 0
+  /* It would be nice to reject hosts whose regoff_t values are too
+     narrow (including glibc on hosts with 64-bit ptrdiff_t and
+     32-bit int), but we should wait until glibc implements this
+     feature.  Otherwise, support for equivalence classes and
+     multibyte collation symbols would always be broken except
+     when compiling --without-included-regex.   */
+  if (sizeof (regoff_t) < sizeof (ptrdiff_t)
+      || sizeof (regoff_t) < sizeof (ssize_t))
+    result |= 64;
+#endif
+
+  return result;
+}
diff --git a/gnulib-tests/test-remove.c b/gnulib-tests/test-remove.c
new file mode 100644
index 0000000..1003a45
--- /dev/null
+++ b/gnulib-tests/test-remove.c
@@ -0,0 +1,125 @@
+/* Tests of remove.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (remove, int, (char const *));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-remove.t"
+
+int
+main (void)
+{
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  /* Setup.  */
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  ASSERT (close (creat (BASE "dir/file", 0600)) == 0);
+
+  /* Basic error conditions.  */
+  errno = 0;
+  ASSERT (remove ("") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (remove ("nosuch") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (remove ("nosuch/") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (remove (".") == -1);
+  ASSERT (errno == EINVAL || errno == EBUSY);
+  /* Resulting errno after ".." or "/" is too varied to test; it is
+     reasonable to see any of EINVAL, EEXIST, ENOTEMPTY, EACCES.  */
+  ASSERT (remove ("..") == -1);
+  ASSERT (remove ("/") == -1);
+  ASSERT (remove ("///") == -1);
+  errno = 0;
+  ASSERT (remove (BASE "dir/file/") == -1);
+  ASSERT (errno == ENOTDIR);
+
+  /* Non-empty directory.  */
+  errno = 0;
+  ASSERT (remove (BASE "dir") == -1);
+  ASSERT (errno == EEXIST || errno == ENOTEMPTY);
+
+  /* Non-directory.  */
+  ASSERT (remove (BASE "dir/file") == 0);
+
+  /* Empty directory.  */
+  errno = 0;
+  ASSERT (remove (BASE "dir/.//") == -1);
+  ASSERT (errno == EINVAL || errno == EBUSY || errno == EEXIST);
+  ASSERT (remove (BASE "dir") == 0);
+
+  /* Test symlink behavior.  Specifying trailing slash should remove
+     referent directory, or cause ENOTDIR failure, but not touch
+     symlink.  */
+  if (symlink (BASE "dir", BASE "link") != 0)
+    {
+      fputs ("skipping test: symlinks not supported on this file system\n",
+             stderr);
+      return 77;
+    }
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  errno = 0;
+  if (remove (BASE "link/") == 0)
+    {
+      struct stat st;
+      errno = 0;
+      ASSERT (stat (BASE "link", &st) == -1);
+      ASSERT (errno == ENOENT);
+    }
+  else
+    ASSERT (remove (BASE "dir") == 0);
+  {
+    struct stat st;
+    ASSERT (lstat (BASE "link", &st) == 0);
+    ASSERT (S_ISLNK (st.st_mode));
+  }
+  ASSERT (remove (BASE "link") == 0);
+  /* Trailing slash on symlink to non-directory is an error.  */
+  ASSERT (symlink (BASE "loop", BASE "loop") == 0);
+  errno = 0;
+  ASSERT (remove (BASE "loop/") == -1);
+  ASSERT (errno == ELOOP || errno == ENOTDIR);
+  ASSERT (remove (BASE "loop") == 0);
+  ASSERT (close (creat (BASE "file", 0600)) == 0);
+  ASSERT (symlink (BASE "file", BASE "link") == 0);
+  errno = 0;
+  ASSERT (remove (BASE "link/") == -1);
+  ASSERT (errno == ENOTDIR);
+  ASSERT (remove (BASE "link") == 0);
+  ASSERT (remove (BASE "file") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-rename.c b/gnulib-tests/test-rename.c
new file mode 100644
index 0000000..633a70f
--- /dev/null
+++ b/gnulib-tests/test-rename.c
@@ -0,0 +1,47 @@
+/* Test of rename() function.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (rename, int, (char const *, char const *));
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-rename.t"
+
+#include "test-rename.h"
+
+int
+main (void)
+{
+  /* Remove any garbage left from previous partial runs.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_rename (rename, true);
+}
diff --git a/gnulib-tests/test-rename.h b/gnulib-tests/test-rename.h
new file mode 100644
index 0000000..844e107
--- /dev/null
+++ b/gnulib-tests/test-rename.h
@@ -0,0 +1,959 @@
+/* Test of rename() function.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This file is designed to test both rename(a,b) and
+   renameat(AT_FDCWD,a,AT_FDCWD,b).  FUNC is the function to test.
+   Assumes that BASE and ASSERT are already defined, and that
+   appropriate headers are already included.  If PRINT, warn before
+   skipping symlink tests with status 77.  */
+
+/* Tests whether a file, given by a file name without slashes, exists in
+   the current directory, by scanning the directory entries.  */
+static bool
+dentry_exists (const char *filename)
+{
+  bool exists = false;
+  DIR *dir = opendir (".");
+
+  ASSERT (dir != NULL);
+  for (;;)
+    {
+      struct dirent *d = readdir (dir);
+      if (d == NULL)
+        break;
+      if (strcmp (d->d_name, filename) == 0)
+        {
+          exists = true;
+          break;
+        }
+    }
+  ASSERT (closedir (dir) == 0);
+  return exists;
+}
+
+/* Asserts that a specific file, given by a file name without slashes, does
+   not exist in the current directory.  */
+static void
+assert_nonexistent (const char *filename)
+{
+  struct stat st;
+
+  /* The usual way to test the presence of a file is via stat() or lstat().  */
+  errno = 0;
+  if (stat (filename, &st) == -1)
+    ASSERT (errno == ENOENT);
+  else
+    {
+      /* But after renaming a directory over an empty directory on an NFS-
+         mounted file system, on Linux 2.6.18, for a period of 30 seconds the
+         old directory name is "present" according to stat() but "nonexistent"
+         according to dentry_exists().  */
+      ASSERT (!dentry_exists (filename));
+      /* Remove the old directory name, so that subsequent mkdir calls
+         succeed.  */
+      (void) rmdir (filename);
+    }
+}
+
+static int
+test_rename (int (*func) (char const *, char const *), bool print)
+{
+  /* Setup.  */
+  struct stat st;
+  int fd = creat (BASE "file", 0600);
+  ASSERT (0 <= fd);
+  ASSERT (write (fd, "hi", 2) == 2);
+  ASSERT (close (fd) == 0);
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+
+  /* Files present here:
+       {BASE}file
+       {BASE}dir/
+   */
+
+  /* Obvious errors.  */
+
+  { /* Missing source.  */
+    {
+      errno = 0;
+      ASSERT (func (BASE "missing", BASE "missing") == -1);
+      ASSERT (errno == ENOENT);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "missing/", BASE "missing") == -1);
+      ASSERT (errno == ENOENT);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "missing", BASE "missing/") == -1);
+      ASSERT (errno == ENOENT);
+    }
+  }
+  { /* Empty operand.  */
+    {
+      errno = 0;
+      ASSERT (func ("", BASE "missing") == -1);
+      ASSERT (errno == ENOENT);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "file", "") == -1);
+      ASSERT (errno == ENOENT);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "", "") == -1);
+      ASSERT (errno == ENOENT);
+    }
+  }
+
+  /* Files.  */
+
+  { /* Trailing slash.  */
+    {
+      errno = 0;
+      ASSERT (func (BASE "file", BASE "file2/") == -1);
+      ASSERT (errno == ENOENT || errno == ENOTDIR);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "file/", BASE "file2") == -1);
+      ASSERT (errno == ENOTDIR);
+    }
+    {
+      errno = 0;
+      ASSERT (stat (BASE "file2", &st) == -1);
+      ASSERT (errno == ENOENT);
+    }
+  }
+  { /* Simple rename.  */
+    ASSERT (func (BASE "file", BASE "file2") == 0);
+    errno = 0;
+    ASSERT (stat (BASE "file", &st) == -1);
+    ASSERT (errno == ENOENT);
+    memset (&st, 0, sizeof st);
+    ASSERT (stat (BASE "file2", &st) == 0);
+    ASSERT (st.st_size == 2);
+  }
+  /* Files present here:
+       {BASE}file2
+       {BASE}dir/
+   */
+  { /* Overwrite.  */
+    ASSERT (close (creat (BASE "file", 0600)) == 0);
+    errno = 0;
+    ASSERT (func (BASE "file2", BASE "file/") == -1);
+    ASSERT (errno == ENOTDIR);
+    ASSERT (func (BASE "file2", BASE "file") == 0);
+    memset (&st, 0, sizeof st);
+    ASSERT (stat (BASE "file", &st) == 0);
+    ASSERT (st.st_size == 2);
+    errno = 0;
+    ASSERT (stat (BASE "file2", &st) == -1);
+    ASSERT (errno == ENOENT);
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}dir/
+   */
+
+  /* Directories.  */
+
+  { /* Simple rename.  */
+    {
+      ASSERT (func (BASE "dir", BASE "dir2/") == 0);
+      errno = 0;
+      ASSERT (stat (BASE "dir", &st) == -1);
+      ASSERT (errno == ENOENT);
+      ASSERT (stat (BASE "dir2", &st) == 0);
+    }
+    /* Files present here:
+         {BASE}file
+         {BASE}dir2/
+     */
+    {
+      ASSERT (func (BASE "dir2/", BASE "dir") == 0);
+      ASSERT (stat (BASE "dir", &st) == 0);
+      errno = 0;
+      ASSERT (stat (BASE "dir2", &st) == -1);
+      ASSERT (errno == ENOENT);
+    }
+    /* Files present here:
+         {BASE}file
+         {BASE}dir/
+     */
+    {
+      ASSERT (func (BASE "dir", BASE "dir2") == 0);
+      errno = 0;
+      ASSERT (stat (BASE "dir", &st) == -1);
+      ASSERT (errno == ENOENT);
+      ASSERT (stat (BASE "dir2", &st) == 0);
+    }
+    /* Files present here:
+         {BASE}file
+         {BASE}dir2/
+     */
+    { /* Empty onto empty.  */
+      ASSERT (mkdir (BASE "dir", 0700) == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir/
+           {BASE}dir2/
+       */
+      ASSERT (func (BASE "dir2", BASE "dir") == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir/
+       */
+      ASSERT (mkdir (BASE "dir2", 0700) == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir/
+           {BASE}dir2/
+       */
+      ASSERT (func (BASE "dir2", BASE "dir/") == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir/
+       */
+      ASSERT (mkdir (BASE "dir2", 0700) == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir/
+           {BASE}dir2/
+       */
+      ASSERT (func (BASE "dir2/", BASE "dir") == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir/
+       */
+      ASSERT (mkdir (BASE "dir2", 0700) == 0);
+    }
+    /* Files present here:
+         {BASE}file
+         {BASE}dir/
+         {BASE}dir2/
+     */
+    { /* Empty onto full.  */
+      ASSERT (close (creat (BASE "dir/file", 0600)) == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir/
+           {BASE}dir/file
+           {BASE}dir2/
+       */
+      {
+        errno = 0;
+        ASSERT (func (BASE "dir2", BASE "dir") == -1);
+        ASSERT (errno == EEXIST || errno == ENOTEMPTY);
+      }
+      {
+        errno = 0;
+        ASSERT (func (BASE "dir2/", BASE "dir") == -1);
+        ASSERT (errno == EEXIST || errno == ENOTEMPTY);
+      }
+      {
+        errno = 0;
+        ASSERT (func (BASE "dir2", BASE "dir/") == -1);
+        ASSERT (errno == EEXIST || errno == ENOTEMPTY);
+      }
+    }
+    { /* Full onto empty.  */
+      ASSERT (func (BASE "dir", BASE "dir2") == 0);
+      assert_nonexistent (BASE "dir");
+      ASSERT (stat (BASE "dir2/file", &st) == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir2/
+           {BASE}dir2/file
+       */
+      ASSERT (mkdir (BASE "dir", 0700) == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir/
+           {BASE}dir2/
+           {BASE}dir2/file
+       */
+      {
+        ASSERT (func (BASE "dir2/", BASE "dir") == 0);
+        ASSERT (stat (BASE "dir/file", &st) == 0);
+        errno = 0;
+        ASSERT (stat (BASE "dir2", &st) == -1);
+        ASSERT (errno == ENOENT);
+      }
+      /* Files present here:
+           {BASE}file
+           {BASE}dir/
+           {BASE}dir/file
+       */
+      ASSERT (mkdir (BASE "dir2", 0700) == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir/
+           {BASE}dir/file
+           {BASE}dir2/
+       */
+      {
+        ASSERT (func (BASE "dir", BASE "dir2/") == 0);
+        assert_nonexistent (BASE "dir");
+        ASSERT (stat (BASE "dir2/file", &st) == 0);
+      }
+      /* Files present here:
+           {BASE}file
+           {BASE}dir2/
+           {BASE}dir2/file
+       */
+      ASSERT (unlink (BASE "dir2/file") == 0);
+    }
+    /* Files present here:
+         {BASE}file
+         {BASE}dir2/
+     */
+    { /* Reject trailing dot.  */
+      {
+        errno = 0;
+        ASSERT (func (BASE "dir2", BASE "dir/.") == -1);
+        ASSERT (errno == EINVAL || errno == ENOENT);
+      }
+      ASSERT (mkdir (BASE "dir", 0700) == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir/
+           {BASE}dir2/
+       */
+      {
+        errno = 0;
+        ASSERT (func (BASE "dir2", BASE "dir/.") == -1);
+        ASSERT (errno == EINVAL || errno == EBUSY || errno == EISDIR
+                || errno == ENOTEMPTY || errno == EEXIST
+                || errno == ENOENT /* WSL */);
+      }
+      {
+        errno = 0;
+        ASSERT (func (BASE "dir2/.", BASE "dir") == -1);
+        ASSERT (errno == EINVAL || errno == EBUSY || errno == EEXIST
+                || errno == ENOENT /* WSL */);
+      }
+      ASSERT (rmdir (BASE "dir") == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir2/
+       */
+      {
+        errno = 0;
+        ASSERT (func (BASE "dir2", BASE "dir/.//") == -1);
+        ASSERT (errno == EINVAL || errno == ENOENT);
+      }
+      ASSERT (mkdir (BASE "dir", 0700) == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir/
+           {BASE}dir2/
+       */
+      {
+        errno = 0;
+        ASSERT (func (BASE "dir2", BASE "dir/.//") == -1);
+        ASSERT (errno == EINVAL || errno == EBUSY || errno == EISDIR
+                || errno == ENOTEMPTY || errno == EEXIST
+                || errno == ENOENT /* WSL */);
+      }
+      {
+        errno = 0;
+        ASSERT (func (BASE "dir2/.//", BASE "dir") == -1);
+        ASSERT (errno == EINVAL || errno == EBUSY || errno == EEXIST
+                || errno == ENOENT /* WSL */);
+      }
+      ASSERT (rmdir (BASE "dir2") == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir/
+       */
+    }
+    { /* Move into subdir.  */
+      {
+        errno = 0;
+        ASSERT (func (BASE "dir", BASE "dir/sub") == -1);
+        ASSERT (errno == EINVAL || errno == EACCES);
+      }
+      {
+        errno = 0;
+        ASSERT (stat (BASE "dir/sub", &st) == -1);
+        ASSERT (errno == ENOENT);
+      }
+      ASSERT (mkdir (BASE "dir/sub", 0700) == 0);
+      /* Files present here:
+           {BASE}file
+           {BASE}dir/
+           {BASE}dir/sub/
+       */
+      {
+        errno = 0;
+        ASSERT (func (BASE "dir", BASE "dir/sub") == -1);
+        ASSERT (errno == EINVAL);
+        ASSERT (stat (BASE "dir/sub", &st) == 0);
+      }
+      ASSERT (rmdir (BASE "dir/sub") == 0);
+    }
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}dir/
+   */
+
+  /* Mixing file and directory.  */
+
+  {
+    { /* File onto dir.  */
+      {
+        errno = 0;
+        ASSERT (func (BASE "file", BASE "dir") == -1);
+        ASSERT (errno == EISDIR || errno == ENOTDIR);
+      }
+      {
+        errno = 0;
+        ASSERT (func (BASE "file", BASE "dir/") == -1);
+        ASSERT (errno == EISDIR || errno == ENOTDIR);
+      }
+    }
+    { /* Dir onto file.  */
+      {
+        errno = 0;
+        ASSERT (func (BASE "dir", BASE "file") == -1);
+        ASSERT (errno == ENOTDIR);
+      }
+      {
+        errno = 0;
+        ASSERT (func (BASE "dir/", BASE "file") == -1);
+        ASSERT (errno == ENOTDIR);
+      }
+    }
+  }
+
+  /* Hard links.  */
+
+  { /* File onto self.  */
+    ASSERT (func (BASE "file", BASE "file") == 0);
+    memset (&st, 0, sizeof st);
+    ASSERT (stat (BASE "file", &st) == 0);
+    ASSERT (st.st_size == 2);
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}dir/
+   */
+  { /* Empty dir onto self.  */
+    ASSERT (func (BASE "dir", BASE "dir") == 0);
+    ASSERT (stat (BASE "dir", &st) == 0);
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}dir/
+   */
+  ASSERT (close (creat (BASE "dir/file", 0600)) == 0);
+  /* Files present here:
+       {BASE}file
+       {BASE}dir/
+       {BASE}dir/file
+   */
+  { /* Full dir onto self.  */
+    ASSERT (func (BASE "dir", BASE "dir") == 0);
+  }
+  ASSERT (unlink (BASE "dir/file") == 0);
+  /* Files present here:
+       {BASE}file
+       {BASE}dir/
+   */
+  {
+    /*  Not all file systems support link.  Mingw doesn't have
+        reliable st_nlink on hard links, but our implementation does
+        fail with EPERM on poor file systems, and we can detect the
+        inferior stat() via st_ino.  Cygwin 1.5.x copies rather than
+        links files on those file systems, but there, st_nlink and
+        st_ino are reliable.  */
+    int ret = link (BASE "file", BASE "file2");
+    if (!ret)
+      {
+        memset (&st, 0, sizeof st);
+        ASSERT (stat (BASE "file2", &st) == 0);
+        if (st.st_ino && st.st_nlink != 2)
+          {
+            ASSERT (unlink (BASE "file2") == 0);
+            errno = EPERM;
+            ret = -1;
+          }
+      }
+    if (ret == -1)
+      {
+        /* If the device does not support hard links, errno is
+           EPERM on Linux, EOPNOTSUPP on FreeBSD.  */
+        switch (errno)
+          {
+          case EPERM:
+          case EOPNOTSUPP:
+            if (print)
+              fputs ("skipping test: "
+                     "hard links not supported on this file system\n",
+                     stderr);
+            ASSERT (unlink (BASE "file") == 0);
+            ASSERT (rmdir (BASE "dir") == 0);
+            return 77;
+          default:
+            perror ("link");
+            return 1;
+          }
+      }
+    ASSERT (ret == 0);
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}file2       (hard link to file)
+       {BASE}dir/
+   */
+  { /* File onto hard link.  */
+    ASSERT (func (BASE "file", BASE "file2") == 0);
+    memset (&st, 0, sizeof st);
+    if (stat (BASE "file", &st) != 0)
+      {
+        /* This can happen on NetBSD.  */
+        ASSERT (errno == ENOENT);
+        ASSERT (link (BASE "file2", BASE "file") == 0);
+        ASSERT (stat (BASE "file", &st) == 0);
+      }
+    ASSERT (st.st_size == 2);
+    memset (&st, 0, sizeof st);
+    ASSERT (stat (BASE "file2", &st) == 0);
+    ASSERT (st.st_size == 2);
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}file2
+       {BASE}dir/
+   */
+  ASSERT (unlink (BASE "file2") == 0);
+  /* Files present here:
+       {BASE}file
+       {BASE}dir/
+   */
+
+  /* Symlinks.  */
+
+  if (symlink (BASE "file", BASE "link1"))
+    {
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      ASSERT (unlink (BASE "file") == 0);
+      ASSERT (rmdir (BASE "dir") == 0);
+      return 77;
+    }
+  /* Files present here:
+       {BASE}file
+       {BASE}link1 -> {BASE}file
+       {BASE}dir/
+   */
+  { /* Simple rename.  */
+    ASSERT (func (BASE "link1", BASE "link2") == 0);
+    ASSERT (stat (BASE "file", &st) == 0);
+    errno = 0;
+    ASSERT (lstat (BASE "link1", &st) == -1);
+    ASSERT (errno == ENOENT);
+    memset (&st, 0, sizeof st);
+    ASSERT (lstat (BASE "link2", &st) == 0);
+    ASSERT (S_ISLNK (st.st_mode));
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}link2 -> {BASE}file
+       {BASE}dir/
+   */
+  { /* Overwrite.  */
+    ASSERT (symlink (BASE "nowhere", BASE "link1") == 0);
+    /* Files present here:
+         {BASE}file
+         {BASE}link1 -> {BASE}nowhere
+         {BASE}link2 -> {BASE}file
+         {BASE}dir/
+     */
+    {
+      ASSERT (func (BASE "link2", BASE "link1") == 0);
+      memset (&st, 0, sizeof st);
+      ASSERT (stat (BASE "link1", &st) == 0);
+      ASSERT (st.st_size == 2);
+      errno = 0;
+      ASSERT (lstat (BASE "link2", &st) == -1);
+      ASSERT (errno == ENOENT);
+    }
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}link1 -> {BASE}file
+       {BASE}dir/
+   */
+  { /* Symlink loop.  */
+    ASSERT (symlink (BASE "link2", BASE "link2") == 0);
+    /* Files present here:
+         {BASE}file
+         {BASE}link1 -> {BASE}file
+         {BASE}link2 -> {BASE}link2
+         {BASE}dir/
+     */
+    {
+      ASSERT (func (BASE "link2", BASE "link2") == 0);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "link2/", BASE "link2") == -1);
+      ASSERT (errno == ELOOP || errno == ENOTDIR);
+    }
+    ASSERT (func (BASE "link2", BASE "link3") == 0);
+    /* Files present here:
+         {BASE}file
+         {BASE}link1 -> {BASE}file
+         {BASE}link3 -> {BASE}link2
+         {BASE}dir/
+     */
+    ASSERT (unlink (BASE "link3") == 0);
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}link1 -> {BASE}file
+       {BASE}dir/
+   */
+  { /* Dangling link.  */
+    ASSERT (symlink (BASE "nowhere", BASE "link2") == 0);
+    /* Files present here:
+         {BASE}file
+         {BASE}link1 -> {BASE}file
+         {BASE}link2 -> {BASE}nowhere
+         {BASE}dir/
+     */
+    {
+      ASSERT (func (BASE "link2", BASE "link3") == 0);
+      errno = 0;
+      ASSERT (lstat (BASE "link2", &st) == -1);
+      ASSERT (errno == ENOENT);
+      memset (&st, 0, sizeof st);
+      ASSERT (lstat (BASE "link3", &st) == 0);
+    }
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}link1 -> {BASE}file
+       {BASE}link3 -> {BASE}nowhere
+       {BASE}dir/
+   */
+  { /* Trailing slash on dangling.  */
+    {
+      errno = 0;
+      ASSERT (func (BASE "link3/", BASE "link2") == -1);
+      ASSERT (errno == ENOENT || errno == ENOTDIR);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "link3", BASE "link2/") == -1);
+      ASSERT (errno == ENOENT || errno == ENOTDIR);
+    }
+    {
+      errno = 0;
+      ASSERT (lstat (BASE "link2", &st) == -1);
+      ASSERT (errno == ENOENT);
+    }
+    memset (&st, 0, sizeof st);
+    ASSERT (lstat (BASE "link3", &st) == 0);
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}link1 -> {BASE}file
+       {BASE}link3 -> {BASE}nowhere
+       {BASE}dir/
+   */
+  { /* Trailing slash on link to file.  */
+    {
+      errno = 0;
+      ASSERT (func (BASE "link1/", BASE "link2") == -1);
+      ASSERT (errno == ENOTDIR);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "link1", BASE "link3/") == -1);
+      ASSERT (errno == ENOENT || errno == ENOTDIR);
+    }
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}link1 -> {BASE}file
+       {BASE}link3 -> {BASE}nowhere
+       {BASE}dir/
+   */
+
+  /* Mixing symlink and file.  */
+
+  { /* File onto link.  */
+    ASSERT (close (creat (BASE "file2", 0600)) == 0);
+    /* Files present here:
+         {BASE}file
+         {BASE}file2
+         {BASE}link1 -> {BASE}file
+         {BASE}link3 -> {BASE}nowhere
+         {BASE}dir/
+     */
+    {
+      ASSERT (func (BASE "file2", BASE "link3") == 0);
+      errno = 0;
+      ASSERT (stat (BASE "file2", &st) == -1);
+      ASSERT (errno == ENOENT);
+      memset (&st, 0, sizeof st);
+      ASSERT (lstat (BASE "link3", &st) == 0);
+      ASSERT (S_ISREG (st.st_mode));
+    }
+    /* Files present here:
+         {BASE}file
+         {BASE}link1 -> {BASE}file
+         {BASE}link3
+         {BASE}dir/
+     */
+    ASSERT (unlink (BASE "link3") == 0);
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}link1 -> {BASE}file
+       {BASE}dir/
+   */
+  { /* Link onto file.  */
+    ASSERT (symlink (BASE "nowhere", BASE "link2") == 0);
+    /* Files present here:
+         {BASE}file
+         {BASE}link1 -> {BASE}file
+         {BASE}link2 -> {BASE}nowhere
+         {BASE}dir/
+     */
+    ASSERT (close (creat (BASE "file2", 0600)) == 0);
+    /* Files present here:
+         {BASE}file
+         {BASE}file2
+         {BASE}link1 -> {BASE}file
+         {BASE}link2 -> {BASE}nowhere
+         {BASE}dir/
+     */
+    {
+      ASSERT (func (BASE "link2", BASE "file2") == 0);
+      errno = 0;
+      ASSERT (lstat (BASE "link2", &st) == -1);
+      ASSERT (errno == ENOENT);
+      memset (&st, 0, sizeof st);
+      ASSERT (lstat (BASE "file2", &st) == 0);
+      ASSERT (S_ISLNK (st.st_mode));
+    }
+    /* Files present here:
+         {BASE}file
+         {BASE}file2 -> {BASE}nowhere
+         {BASE}link1 -> {BASE}file
+         {BASE}dir/
+     */
+    ASSERT (unlink (BASE "file2") == 0);
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}link1 -> {BASE}file
+       {BASE}dir/
+   */
+  { /* Trailing slash.  */
+    {
+      errno = 0;
+      ASSERT (func (BASE "file/", BASE "link1") == -1);
+      ASSERT (errno == ENOTDIR);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "file", BASE "link1/") == -1);
+      ASSERT (errno == ENOTDIR || errno == ENOENT);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "link1/", BASE "file") == -1);
+      ASSERT (errno == ENOTDIR);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "link1", BASE "file/") == -1);
+      ASSERT (errno == ENOTDIR || errno == ENOENT);
+      memset (&st, 0, sizeof st);
+      ASSERT (lstat (BASE "file", &st) == 0);
+      ASSERT (S_ISREG (st.st_mode));
+      memset (&st, 0, sizeof st);
+      ASSERT (lstat (BASE "link1", &st) == 0);
+      ASSERT (S_ISLNK (st.st_mode));
+    }
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}link1 -> {BASE}file
+       {BASE}dir/
+   */
+
+  /* Mixing symlink and directory.  */
+
+  { /* Directory onto link.  */
+    {
+      errno = 0;
+      ASSERT (func (BASE "dir", BASE "link1") == -1);
+      ASSERT (errno == ENOTDIR);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "dir/", BASE "link1") == -1);
+      ASSERT (errno == ENOTDIR);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "dir", BASE "link1/") == -1);
+      ASSERT (errno == ENOTDIR);
+    }
+  }
+  { /* Link onto directory.  */
+    {
+      errno = 0;
+      ASSERT (func (BASE "link1", BASE "dir") == -1);
+      ASSERT (errno == EISDIR || errno == ENOTDIR);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "link1", BASE "dir/") == -1);
+      ASSERT (errno == EISDIR || errno == ENOTDIR);
+    }
+    {
+      errno = 0;
+      ASSERT (func (BASE "link1/", BASE "dir") == -1);
+      ASSERT (errno == ENOTDIR);
+      memset (&st, 0, sizeof st);
+      ASSERT (lstat (BASE "link1", &st) == 0);
+      ASSERT (S_ISLNK (st.st_mode));
+      memset (&st, 0, sizeof st);
+      ASSERT (lstat (BASE "dir", &st) == 0);
+      ASSERT (S_ISDIR (st.st_mode));
+    }
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}link1 -> {BASE}file
+       {BASE}dir/
+   */
+
+  /* POSIX requires rename("link-to-dir/","other") to rename "dir" and
+     leave "link-to-dir" dangling, but GNU rejects this.  POSIX
+     requires rename("dir","dangling/") to create the directory so
+     that "dangling/" now resolves, but GNU rejects this.  While we
+     prefer GNU behavior, we don't enforce it.  However, we do test
+     that the system either follows POSIX in both cases, or follows
+     GNU.  */
+  {
+    int result;
+    ASSERT (symlink (BASE "dir2", BASE "link2") == 0);
+    /* Files present here:
+         {BASE}file
+         {BASE}link1 -> {BASE}file
+         {BASE}link2 -> {BASE}dir2
+         {BASE}dir/
+     */
+    errno = 0;
+    result = func (BASE "dir", BASE "link2/");
+    if (result == 0)
+      {
+        /* POSIX.  */
+        errno = 0;
+        ASSERT (lstat (BASE "dir", &st) == -1);
+        ASSERT (errno == ENOENT);
+        memset (&st, 0, sizeof st);
+        ASSERT (lstat (BASE "dir2", &st) == 0);
+        ASSERT (S_ISDIR (st.st_mode));
+        memset (&st, 0, sizeof st);
+        ASSERT (lstat (BASE "link2", &st) == 0);
+        ASSERT (S_ISLNK (st.st_mode));
+        /* Files present here:
+             {BASE}file
+             {BASE}link1 -> {BASE}file
+             {BASE}link2 -> {BASE}dir2
+             {BASE}dir2/
+         */
+        {
+          ASSERT (func (BASE "link2/", BASE "dir") == 0);
+          memset (&st, 0, sizeof st);
+          ASSERT (lstat (BASE "dir", &st) == 0);
+          ASSERT (S_ISDIR (st.st_mode));
+          errno = 0;
+          ASSERT (lstat (BASE "dir2", &st) == -1);
+          ASSERT (errno == ENOENT);
+          memset (&st, 0, sizeof st);
+          ASSERT (lstat (BASE "link2", &st) == 0);
+          ASSERT (S_ISLNK (st.st_mode));
+        }
+      }
+    else
+      {
+        /* GNU.  */
+        ASSERT (result == -1);
+        ASSERT (errno == ENOTDIR);
+        memset (&st, 0, sizeof st);
+        ASSERT (lstat (BASE "dir", &st) == 0);
+        ASSERT (S_ISDIR (st.st_mode));
+        errno = 0;
+        ASSERT (lstat (BASE "dir2", &st) == -1);
+        ASSERT (errno == ENOENT);
+        memset (&st, 0, sizeof st);
+        ASSERT (lstat (BASE "link2", &st) == 0);
+        ASSERT (S_ISLNK (st.st_mode));
+        ASSERT (unlink (BASE "link2") == 0);
+        ASSERT (symlink (BASE "dir", BASE "link2") == 0);
+        /* Files present here:
+             {BASE}file
+             {BASE}link1 -> {BASE}file
+             {BASE}link2 -> {BASE}dir
+             {BASE}dir/
+         */
+        errno = 0; /* OpenBSD notices that link2/ and dir are the same.  */
+        result = func (BASE "link2/", BASE "dir");
+        if (result) /* GNU/Linux rejects attempts to use link2/.  */
+          {
+            ASSERT (result == -1);
+            ASSERT (errno == ENOTDIR || errno == EISDIR);
+          }
+        memset (&st, 0, sizeof st);
+        ASSERT (lstat (BASE "dir", &st) == 0);
+        ASSERT (S_ISDIR (st.st_mode));
+        errno = 0;
+        ASSERT (lstat (BASE "dir2", &st) == -1);
+        ASSERT (errno == ENOENT);
+        memset (&st, 0, sizeof st);
+        ASSERT (lstat (BASE "link2", &st) == 0);
+        ASSERT (S_ISLNK (st.st_mode));
+      }
+  }
+  /* Files present here:
+       {BASE}file
+       {BASE}link1 -> {BASE}file
+       {BASE}link2 -> {BASE}dir or {BASE}dir2
+       {BASE}dir/
+   */
+
+  /* Clean up.  */
+  ASSERT (unlink (BASE "file") == 0);
+  ASSERT (rmdir (BASE "dir") == 0);
+  ASSERT (unlink (BASE "link1") == 0);
+  ASSERT (unlink (BASE "link2") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-renameat.c b/gnulib-tests/test-renameat.c
new file mode 100644
index 0000000..b952a15
--- /dev/null
+++ b/gnulib-tests/test-renameat.c
@@ -0,0 +1,208 @@
+/* Tests of renameat.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (renameat, int, (int, char const *, int, char const *));
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+#include "filenamecat.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-renameat.t"
+
+#include "test-rename.h"
+
+static int dfd1 = AT_FDCWD;
+static int dfd2 = AT_FDCWD;
+
+/* Wrapper to test renameat like rename.  */
+static int
+do_rename (char const *name1, char const *name2)
+{
+  return renameat (dfd1, name1, dfd2, name2);
+}
+
+int
+main (void)
+{
+  int i;
+  int dfd;
+  char *cwd;
+  int result;
+
+  /* Clean up any trash from prior testsuite runs.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (renameat (-1, "foo", AT_FDCWD, "bar") == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (renameat (99, "foo", AT_FDCWD, "bar") == -1);
+    ASSERT (errno == EBADF);
+  }
+  ASSERT (close (creat (BASE "oo", 0600)) == 0);
+  {
+    errno = 0;
+    ASSERT (renameat (AT_FDCWD, BASE "oo", -1, "bar") == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    errno = 0;
+    ASSERT (renameat (AT_FDCWD, BASE "oo", 99, "bar") == -1);
+    ASSERT (errno == EBADF);
+  }
+  ASSERT (unlink (BASE "oo") == 0);
+
+  /* Test basic rename functionality, using current directory.  */
+  result = test_rename (do_rename, false);
+  dfd1 = open (".", O_RDONLY);
+  ASSERT (0 <= dfd1);
+  ASSERT (test_rename (do_rename, false) == result);
+  dfd2 = dfd1;
+  ASSERT (test_rename (do_rename, false) == result);
+  dfd1 = AT_FDCWD;
+  ASSERT (test_rename (do_rename, false) == result);
+  ASSERT (close (dfd2) == 0);
+
+  /* Create locations to manipulate.  */
+  ASSERT (mkdir (BASE "sub1", 0700) == 0);
+  ASSERT (mkdir (BASE "sub2", 0700) == 0);
+  dfd = creat (BASE "00", 0600);
+  ASSERT (0 <= dfd);
+  ASSERT (close (dfd) == 0);
+  cwd = getcwd (NULL, 0);
+  ASSERT (cwd);
+
+  dfd = open (BASE "sub1", O_RDONLY);
+  ASSERT (0 <= dfd);
+  ASSERT (chdir (BASE "sub2") == 0);
+
+  /* There are 16 possible scenarios, based on whether an fd is
+     AT_FDCWD or real, and whether a file is absolute or relative.
+
+     To ensure that we test all of the code paths (rather than
+     triggering early normalization optimizations), we use a loop to
+     repeatedly rename a file in the parent directory, use an fd open
+     on subdirectory 1, all while executing in subdirectory 2; all
+     relative names are thus given with a leading "../".  Finally, the
+     last scenario (two relative paths given, neither one AT_FDCWD)
+     has two paths, based on whether the two fds are equivalent, so we
+     do the other variant after the loop.  */
+  for (i = 0; i < 16; i++)
+    {
+      int fd1 = (i & 8) ? dfd : AT_FDCWD;
+      char *file1 = file_name_concat ((i & 4) ? ".." : cwd, BASE "xx", NULL);
+      int fd2 = (i & 2) ? dfd : AT_FDCWD;
+      char *file2 = file_name_concat ((i & 1) ? ".." : cwd, BASE "xx", NULL);
+
+      ASSERT (sprintf (strchr (file1, '\0') - 2, "%02d", i) == 2);
+      ASSERT (sprintf (strchr (file2, '\0') - 2, "%02d", i + 1) == 2);
+      ASSERT (renameat (fd1, file1, fd2, file2) == 0);
+      free (file1);
+      free (file2);
+    }
+  dfd2 = open ("..", O_RDONLY);
+  ASSERT (0 <= dfd2);
+  ASSERT (renameat (dfd, "../" BASE "16", dfd2, BASE "17") == 0);
+  ASSERT (close (dfd2) == 0);
+
+  /* Now we change back to the parent directory, and set dfd to ".";
+     using dfd in remaining tests will expose any bugs if emulation
+     via /proc/self/fd doesn't check for empty names.  */
+  ASSERT (chdir ("..") == 0);
+  ASSERT (close (dfd) == 0);
+  dfd = open (".", O_RDONLY);
+  ASSERT (0 <= dfd);
+
+  ASSERT (close (creat (BASE "sub2/file", 0600)) == 0);
+  errno = 0;
+  ASSERT (renameat (dfd, BASE "sub1", dfd, BASE "sub2") == -1);
+  ASSERT (errno == EEXIST || errno == ENOTEMPTY);
+  ASSERT (unlink (BASE "sub2/file") == 0);
+  errno = 0;
+  ASSERT (renameat (dfd, BASE "sub2", dfd, BASE "sub1/.") == -1);
+  ASSERT (errno == EINVAL || errno == EISDIR || errno == EBUSY
+          || errno == ENOTEMPTY || errno == EEXIST
+          || errno == ENOENT /* WSL */);
+  errno = 0;
+  ASSERT (renameat (dfd, BASE "sub2/.", dfd, BASE "sub1") == -1);
+  ASSERT (errno == EINVAL || errno == EBUSY || errno == EEXIST
+          || errno == ENOENT /* WSL */);
+  errno = 0;
+  ASSERT (renameat (dfd, BASE "17", dfd, BASE "sub1") == -1);
+  ASSERT (errno == EISDIR);
+  errno = 0;
+  ASSERT (renameat (dfd, BASE "nosuch", dfd, BASE "18") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (renameat (dfd, "", dfd, BASE "17") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (renameat (dfd, BASE "17", dfd, "") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (renameat (dfd, BASE "sub2", dfd, BASE "17") == -1);
+  ASSERT (errno == ENOTDIR);
+  errno = 0;
+  ASSERT (renameat (dfd, BASE "17/", dfd, BASE "18") == -1);
+  ASSERT (errno == ENOTDIR);
+  errno = 0;
+  ASSERT (renameat (dfd, BASE "17", dfd, BASE "18/") == -1);
+  ASSERT (errno == ENOTDIR || errno == ENOENT);
+
+  /* Finally, make sure we can overwrite existing files.  */
+  ASSERT (close (creat (BASE "sub2/file", 0600)) == 0);
+  errno = 0;
+  ASSERT (renameat (dfd, BASE "sub2", dfd, BASE "sub1") == 0);
+  ASSERT (renameat (dfd, BASE "sub1/file", dfd, BASE "17") == 0);
+
+  /* Cleanup.  */
+  ASSERT (close (dfd) == 0);
+  errno = 0;
+  ASSERT (unlink (BASE "sub1/file") == -1);
+  ASSERT (errno == ENOENT);
+  ASSERT (unlink (BASE "17") == 0);
+  ASSERT (rmdir (BASE "sub1") == 0);
+  errno = 0;
+  ASSERT (rmdir (BASE "sub2") == -1);
+  ASSERT (errno == ENOENT);
+  free (cwd);
+
+  if (result)
+    fputs ("skipping test: symlinks not supported on this file system\n",
+           stderr);
+  return result;
+}
diff --git a/gnulib-tests/test-renameatu.c b/gnulib-tests/test-renameatu.c
new file mode 100644
index 0000000..728a352
--- /dev/null
+++ b/gnulib-tests/test-renameatu.c
@@ -0,0 +1,211 @@
+/* Test renameatu.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <renameatu.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (renameatu, int,
+                 (int, char const *, int, char const *, unsigned int));
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+#include "filenamecat.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-renameatu.t"
+
+#include "test-rename.h"
+
+static int dfd1 = AT_FDCWD;
+static int dfd2 = AT_FDCWD;
+
+/* Wrapper to test renameatu like rename.  */
+static int
+do_rename (char const *name1, char const *name2)
+{
+  return renameatu (dfd1, name1, dfd2, name2, 0);
+}
+
+int
+main (void)
+{
+  int i;
+  int dfd;
+  char *cwd;
+  int result;
+
+  /* Clean up any trash from prior testsuite runs.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (renameatu (-1, "foo", AT_FDCWD, "bar", 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (renameatu (99, "foo", AT_FDCWD, "bar", 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  ASSERT (close (creat (BASE "oo", 0600)) == 0);
+  {
+    errno = 0;
+    ASSERT (renameatu (AT_FDCWD, BASE "oo", -1, "bar", 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    errno = 0;
+    ASSERT (renameatu (AT_FDCWD, BASE "oo", 99, "bar", 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  ASSERT (unlink (BASE "oo") == 0);
+
+  /* Test basic rename functionality, using current directory.  */
+  result = test_rename (do_rename, false);
+  dfd1 = open (".", O_RDONLY);
+  ASSERT (0 <= dfd1);
+  ASSERT (test_rename (do_rename, false) == result);
+  dfd2 = dfd1;
+  ASSERT (test_rename (do_rename, false) == result);
+  dfd1 = AT_FDCWD;
+  ASSERT (test_rename (do_rename, false) == result);
+  ASSERT (close (dfd2) == 0);
+
+  /* Create locations to manipulate.  */
+  ASSERT (mkdir (BASE "sub1", 0700) == 0);
+  ASSERT (mkdir (BASE "sub2", 0700) == 0);
+  dfd = creat (BASE "00", 0600);
+  ASSERT (0 <= dfd);
+  ASSERT (close (dfd) == 0);
+  cwd = getcwd (NULL, 0);
+  ASSERT (cwd);
+
+  dfd = open (BASE "sub1", O_RDONLY);
+  ASSERT (0 <= dfd);
+  ASSERT (chdir (BASE "sub2") == 0);
+
+  /* There are 16 possible scenarios, based on whether an fd is
+     AT_FDCWD or real, and whether a file is absolute or relative.
+
+     To ensure that we test all of the code paths (rather than
+     triggering early normalization optimizations), we use a loop to
+     repeatedly rename a file in the parent directory, use an fd open
+     on subdirectory 1, all while executing in subdirectory 2; all
+     relative names are thus given with a leading "../".  Finally, the
+     last scenario (two relative paths given, neither one AT_FDCWD)
+     has two paths, based on whether the two fds are equivalent, so we
+     do the other variant after the loop.  */
+  for (i = 0; i < 16; i++)
+    {
+      int fd1 = (i & 8) ? dfd : AT_FDCWD;
+      char *file1 = file_name_concat ((i & 4) ? ".." : cwd, BASE "xx", NULL);
+      int fd2 = (i & 2) ? dfd : AT_FDCWD;
+      char *file2 = file_name_concat ((i & 1) ? ".." : cwd, BASE "xx", NULL);
+
+      ASSERT (sprintf (strchr (file1, '\0') - 2, "%02d", i) == 2);
+      ASSERT (sprintf (strchr (file2, '\0') - 2, "%02d", i + 1) == 2);
+      ASSERT (renameatu (fd1, file1, fd2, file2, 0) == 0);
+      free (file1);
+      free (file2);
+    }
+  dfd2 = open ("..", O_RDONLY);
+  ASSERT (0 <= dfd2);
+  ASSERT (renameatu (dfd, "../" BASE "16", dfd2, BASE "17", 0) == 0);
+  ASSERT (close (dfd2) == 0);
+
+  /* Now we change back to the parent directory, and set dfd to ".";
+     using dfd in remaining tests will expose any bugs if emulation
+     via /proc/self/fd doesn't check for empty names.  */
+  ASSERT (chdir ("..") == 0);
+  ASSERT (close (dfd) == 0);
+  dfd = open (".", O_RDONLY);
+  ASSERT (0 <= dfd);
+
+  ASSERT (close (creat (BASE "sub2/file", 0600)) == 0);
+  errno = 0;
+  ASSERT (renameatu (dfd, BASE "sub1", dfd, BASE "sub2", 0) == -1);
+  ASSERT (errno == EEXIST || errno == ENOTEMPTY);
+  ASSERT (unlink (BASE "sub2/file") == 0);
+  errno = 0;
+  ASSERT (renameatu (dfd, BASE "sub2", dfd, BASE "sub1/.", 0) == -1);
+  ASSERT (errno == EINVAL || errno == EISDIR || errno == EBUSY
+          || errno == ENOTEMPTY || errno == EEXIST
+          || errno == ENOENT /* WSL */);
+  errno = 0;
+  ASSERT (renameatu (dfd, BASE "sub2/.", dfd, BASE "sub1", 0) == -1);
+  ASSERT (errno == EINVAL || errno == EBUSY || errno == EEXIST
+          || errno == ENOENT /* WSL */);
+  errno = 0;
+  ASSERT (renameatu (dfd, BASE "17", dfd, BASE "sub1", 0) == -1);
+  ASSERT (errno == EISDIR);
+  errno = 0;
+  ASSERT (renameatu (dfd, BASE "nosuch", dfd, BASE "18", 0) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (renameatu (dfd, "", dfd, BASE "17", 0) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (renameatu (dfd, BASE "17", dfd, "", 0) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (renameatu (dfd, BASE "sub2", dfd, BASE "17", 0) == -1);
+  ASSERT (errno == ENOTDIR);
+  errno = 0;
+  ASSERT (renameatu (dfd, BASE "17/", dfd, BASE "18", 0) == -1);
+  ASSERT (errno == ENOTDIR);
+  errno = 0;
+  ASSERT (renameatu (dfd, BASE "17", dfd, BASE "18/", 0) == -1);
+  ASSERT (errno == ENOTDIR || errno == ENOENT);
+
+  /* Finally, make sure we cannot overwrite existing files.  */
+  ASSERT (close (creat (BASE "sub2/file", 0600)) == 0);
+  errno = 0;
+  ASSERT ((renameatu (dfd, BASE "sub2", dfd, BASE "sub1", RENAME_NOREPLACE)
+           == -1)
+          && errno == EEXIST);
+  ASSERT ((renameatu (dfd, BASE "sub2/file", dfd, BASE "17", RENAME_NOREPLACE)
+           == -1)
+          && errno == EEXIST);
+
+  /* Cleanup.  */
+  ASSERT (close (dfd) == 0);
+  ASSERT (unlink (BASE "sub2/file") == 0);
+  ASSERT (unlink (BASE "17") == 0);
+  ASSERT (rmdir (BASE "sub1") == 0);
+  ASSERT (rmdir (BASE "sub2") == 0);
+  free (cwd);
+
+  if (result)
+    fputs ("skipping test: symlinks not supported on this file system\n",
+           stderr);
+  return result;
+}
diff --git a/gnulib-tests/test-rmdir.c b/gnulib-tests/test-rmdir.c
new file mode 100644
index 0000000..0c787b9
--- /dev/null
+++ b/gnulib-tests/test-rmdir.c
@@ -0,0 +1,47 @@
+/* Tests of rmdir.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (rmdir, int, (char const *));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-rmdir.t"
+
+#include "test-rmdir.h"
+
+int
+main (void)
+{
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_rmdir_func (rmdir, true);
+}
diff --git a/gnulib-tests/test-rmdir.h b/gnulib-tests/test-rmdir.h
new file mode 100644
index 0000000..c5bdef2
--- /dev/null
+++ b/gnulib-tests/test-rmdir.h
@@ -0,0 +1,102 @@
+/* Tests of rmdir.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+/* This file is designed to test both rmdir(n) and
+   unlinkat(AT_FDCWD,n,AT_REMOVEDIR).  FUNC is the function to test.
+   Assumes that BASE and ASSERT are already defined, and that
+   appropriate headers are already included.  If PRINT, then warn
+   before returning status 77 when symlinks are unsupported.  */
+
+static int
+test_rmdir_func (int (*func) (char const *name), bool print)
+{
+  /* Setup.  */
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  ASSERT (close (creat (BASE "dir/file", 0600)) == 0);
+
+  /* Basic error conditions.  */
+  errno = 0;
+  ASSERT (func ("") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (BASE "nosuch") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (BASE "nosuch/") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (".") == -1);
+  ASSERT (errno == EINVAL || errno == EBUSY);
+  /* Resulting errno after ".." or "/" is too varied to test; it is
+     reasonable to see any of EINVAL, EBUSY, EEXIST, ENOTEMPTY,
+     EACCES, EPERM.  */
+  ASSERT (func ("..") == -1);
+  ASSERT (func ("/") == -1);
+  ASSERT (func ("///") == -1);
+  errno = 0;
+  ASSERT (func (BASE "dir/file/") == -1);
+  ASSERT (errno == ENOTDIR);
+
+  /* Non-empty directory.  */
+  errno = 0;
+  ASSERT (func (BASE "dir") == -1);
+  ASSERT (errno == EEXIST || errno == ENOTEMPTY);
+
+  /* Non-directory.  */
+  errno = 0;
+  ASSERT (func (BASE "dir/file") == -1);
+  ASSERT (errno == ENOTDIR);
+
+  /* Empty directory.  */
+  ASSERT (unlink (BASE "dir/file") == 0);
+  errno = 0;
+  ASSERT (func (BASE "dir/.//") == -1);
+  ASSERT (errno == EINVAL || errno == EBUSY || errno == EEXIST
+          || errno == ENOTEMPTY);
+  ASSERT (func (BASE "dir") == 0);
+
+  /* Test symlink behavior.  Specifying trailing slash should remove
+     referent directory (POSIX), or cause ENOTDIR failure (Linux), but
+     not touch symlink.  We prefer the Linux behavior for its
+     intuitiveness (especially compared to rmdir("symlink-to-file/")),
+     but not enough to penalize POSIX systems with an rpl_rmdir.  */
+  if (symlink (BASE "dir", BASE "link") != 0)
+    {
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  errno = 0;
+  if (func (BASE "link/") == 0)
+    {
+      struct stat st;
+      errno = 0;
+      ASSERT (stat (BASE "link", &st) == -1);
+      ASSERT (errno == ENOENT);
+    }
+  else
+    {
+      ASSERT (errno == ENOTDIR);
+      ASSERT (func (BASE "dir") == 0);
+    }
+  ASSERT (unlink (BASE "link") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-rwlock1.c b/gnulib-tests/test-rwlock1.c
new file mode 100644
index 0000000..0ae78f2
--- /dev/null
+++ b/gnulib-tests/test-rwlock1.c
@@ -0,0 +1,170 @@
+/* Test of glthread_rwlock_rdlock function.
+   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Inspired by
+   https://github.com/linux-test-project/ltp/blob/master/testcases/open_posix_testsuite/conformance/interfaces/pthread_rwlock_rdlock/2-2.c
+   by Intel Corporation.  */
+
+#include <config.h>
+
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+
+#include "glthread/lock.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "glthread/thread.h"
+
+/* Verify that in a situation where
+     - an rwlock is taken by a reader and has a writer waiting,
+     - an additional reader requests the lock,
+     - the waiting writer and the requesting reader threads have the same
+       priority,
+   the requesting reader thread gets blocked, so that at some point the
+   waiting writer can acquire the lock.
+   Without such a guarantee, when there a N readers and each of the readers
+   spends more than 1/Nth of the time with the lock held, there is a high
+   probability that the waiting writer will not get the lock in a given finite
+   time, a phenomenon called "writer starvation".
+   Without such a guarantee, applications have a hard time avoiding writer
+   starvation.
+
+   POSIX:2008 makes this requirement only for implementations that support TPS
+   (Thread Priority Scheduling) and only for the scheduling policies SCHED_FIFO
+   and SCHED_RR, see
+   https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_rwlock_rdlock.html
+   but test verifies the guarantee regardless of TPS and regardless of
+   scheduling policy.  */
+
+#define SUCCEED() exit (0)
+#define FAILURE() exit (1)
+#define UNEXPECTED(n) (fprintf (stderr, "Unexpected outcome %d\n", n), abort ())
+
+/* The main thread creates the waiting writer and the requesting reader threads
+   in the default way; this guarantees that they have the same priority.
+   We can reuse the main thread as first reader thread.  */
+
+static gl_rwlock_t lock;
+static gl_thread_t reader1;
+static gl_thread_t writer;
+static gl_thread_t reader2;
+static gl_thread_t timer;
+/* Used to pass control from writer to reader2 and from reader2 to timer,
+   as in a relay race.
+   Passing control from one running thread to another running thread
+   is most likely faster than to create the second thread.  */
+static gl_lock_t baton;
+
+static void *
+timer_func (void *ignored)
+{
+  /* Step 13 (can be before or after step 12):
+     The timer thread takes the baton, then waits a moment to make sure
+     it can tell whether the second reader thread is blocked at step 12.  */
+  if (glthread_lock_lock (&baton))
+    UNEXPECTED (13);
+  usleep (100000);
+  /* By the time we get here, it's clear that the second reader thread is
+     blocked at step 12.  This is the desired behaviour.  */
+  SUCCEED ();
+}
+
+static void *
+reader2_func (void *ignored)
+{
+  int err;
+
+  /* Step 8 (can be before or after step 7):
+     The second reader thread takes the baton, then waits a moment to make sure
+     the writer thread has reached step 7.  */
+  if (glthread_lock_lock (&baton))
+    UNEXPECTED (8);
+  usleep (100000);
+  /* Step 9 omitted.  */
+  /* Step 10: Launch a timer, to test whether the next call blocks.  */
+  if (glthread_create (&timer, timer_func, NULL))
+    UNEXPECTED (10);
+  /* Step 11: Release the baton.  */
+  if (glthread_lock_unlock (&baton))
+    UNEXPECTED (11);
+  /* Step 12: The second reader thread requests the lock.  */
+  err = glthread_rwlock_rdlock (&lock);
+  if (err == 0)
+    FAILURE ();
+  else
+    UNEXPECTED (12);
+}
+
+static void *
+writer_func (void *ignored)
+{
+  /* Step 4: Take the baton, so that the second reader thread does not go ahead
+     too early.  */
+  if (glthread_lock_lock (&baton))
+    UNEXPECTED (4);
+  /* Step 5: Create the second reader thread.  */
+  if (glthread_create (&reader2, reader2_func, NULL))
+    UNEXPECTED (5);
+  /* Step 6: Release the baton.  */
+  if (glthread_lock_unlock (&baton))
+    UNEXPECTED (6);
+  /* Step 7: The writer thread requests the lock.  */
+  if (glthread_rwlock_wrlock (&lock))
+    UNEXPECTED (7);
+  return NULL;
+}
+
+int
+main ()
+{
+  reader1 = gl_thread_self ();
+
+  /* Step 1: The main thread initializes the lock and the baton.  */
+  if (glthread_rwlock_init (&lock))
+    UNEXPECTED (1);
+  if (glthread_lock_init (&baton))
+    UNEXPECTED (1);
+  /* Step 2: The main thread acquires the lock as a reader.  */
+  if (glthread_rwlock_rdlock (&lock))
+    UNEXPECTED (2);
+  /* Step 3: Create the writer thread.  */
+  if (glthread_create (&writer, writer_func, NULL))
+    UNEXPECTED (3);
+  /* Job done.  Go to sleep.  */
+  for (;;)
+    {
+      sleep (1);
+    }
+}
+
+#else
+
+/* No multithreading available.  */
+
+#include <stdio.h>
+
+int
+main ()
+{
+  fputs ("Skipping test: multithreading not enabled\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/gnulib-tests/test-sameacls.c b/gnulib-tests/test-sameacls.c
new file mode 100644
index 0000000..cdb10f4
--- /dev/null
+++ b/gnulib-tests/test-sameacls.c
@@ -0,0 +1,714 @@
+/* Test whether two files have the same ACLs.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#if HAVE_ACL_GET_FILE || HAVE_FACL || HAVE_GETACL || HAVE_ACLX_GET || HAVE_STATACL || HAVE_ACLSORT
+# include <sys/types.h>
+# include <sys/acl.h>
+#endif
+#if HAVE_ACLV_H
+# include <sys/types.h>
+# include <aclv.h>
+#endif
+
+#include "read-file.h"
+#include "xalloc.h"
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  const char *file1;
+  const char *file2;
+
+  ASSERT (argc == 3);
+
+  file1 = argv[1];
+  file2 = argv[2];
+
+  /* Compare the contents of the two files.  */
+  {
+    size_t size1;
+    char *contents1;
+    size_t size2;
+    char *contents2;
+
+    contents1 = read_file (file1, &size1);
+    if (contents1 == NULL)
+      {
+        fprintf (stderr, "error reading file %s: errno = %d\n", file1, errno);
+        fflush (stderr);
+        abort ();
+      }
+    contents2 = read_file (file2, &size2);
+    if (contents2 == NULL)
+      {
+        fprintf (stderr, "error reading file %s: errno = %d\n", file2, errno);
+        fflush (stderr);
+        abort ();
+      }
+
+    if (size2 != size1)
+      {
+        fprintf (stderr, "files %s and %s have different sizes\n",
+                 file1, file2);
+        fflush (stderr);
+        abort ();
+      }
+    if (memcmp (contents1, contents2, size1) != 0)
+      {
+        fprintf (stderr, "files %s and %s have different contents\n",
+                 file1, file2);
+        fflush (stderr);
+        abort ();
+      }
+
+    free (contents2);
+    free (contents1);
+  }
+
+  /* Compare the access permissions of the two files, including ACLs.  */
+  {
+    struct stat statbuf1;
+    struct stat statbuf2;
+
+    if (stat (file1, &statbuf1) < 0)
+      {
+        fprintf (stderr, "error accessing file %s: errno = %d\n", file1, errno);
+        fflush (stderr);
+        abort ();
+      }
+    if (stat (file2, &statbuf2) < 0)
+      {
+        fprintf (stderr, "error accessing file %s: errno = %d\n", file2, errno);
+        fflush (stderr);
+        abort ();
+      }
+    if (statbuf1.st_mode != statbuf2.st_mode)
+      {
+        fprintf (stderr, "files %s and %s have different access modes: %03o and %03o\n",
+                 file1, file2,
+                (unsigned int) statbuf1.st_mode, (unsigned int) statbuf2.st_mode);
+        return 1;
+      }
+  }
+  {
+#if HAVE_ACL_GET_FILE /* Linux, FreeBSD, Mac OS X, IRIX, Tru64 */
+    static const int types[] =
+      {
+        ACL_TYPE_ACCESS
+# if HAVE_ACL_TYPE_EXTENDED /* Mac OS X */
+        , ACL_TYPE_EXTENDED
+# endif
+      };
+    int t;
+
+    for (t = 0; t < sizeof (types) / sizeof (types[0]); t++)
+      {
+        int type = types[t];
+        acl_t acl1;
+        char *text1;
+        int errno1;
+        acl_t acl2;
+        char *text2;
+        int errno2;
+
+        acl1 = acl_get_file (file1, type);
+        if (acl1 == (acl_t)NULL)
+          {
+            text1 = NULL;
+            errno1 = errno;
+          }
+        else
+          {
+            text1 = acl_to_text (acl1, NULL);
+            if (text1 == NULL)
+              errno1 = errno;
+            else
+              errno1 = 0;
+          }
+        acl2 = acl_get_file (file2, type);
+        if (acl2 == (acl_t)NULL)
+          {
+            text2 = NULL;
+            errno2 = errno;
+          }
+        else
+          {
+            text2 = acl_to_text (acl2, NULL);
+            if (text2 == NULL)
+              errno2 = errno;
+            else
+              errno2 = 0;
+          }
+
+        if (acl1 != (acl_t)NULL)
+          {
+            if (acl2 != (acl_t)NULL)
+              {
+                if (text1 != NULL)
+                  {
+                    if (text2 != NULL)
+                      {
+                        if (strcmp (text1, text2) != 0)
+                          {
+                            fprintf (stderr, "files %s and %s have different ACLs:\n%s\n%s\n",
+                                     file1, file2, text1, text2);
+                            return 1;
+                          }
+                      }
+                    else
+                      {
+                        fprintf (stderr, "file %s has a valid ACL, but file %s has an invalid ACL\n",
+                                 file1, file2);
+                        return 1;
+                      }
+                  }
+                else
+                  {
+                    if (text2 != NULL)
+                      {
+                        fprintf (stderr, "file %s has an invalid ACL, but file %s has a valid ACL\n",
+                                 file1, file2);
+                        return 1;
+                      }
+                    else
+                      {
+                        if (errno1 != errno2)
+                          {
+                            fprintf (stderr, "files %s and %s have differently invalid ACLs, errno = %d vs. %d\n",
+                                     file1, file2, errno1, errno2);
+                            return 1;
+                          }
+                      }
+                  }
+              }
+            else
+              {
+                fprintf (stderr, "file %s has an ACL, but file %s has no ACL\n",
+                         file1, file2);
+                return 1;
+              }
+          }
+        else
+          {
+            if (acl2 != (acl_t)NULL)
+              {
+                fprintf (stderr, "file %s has no ACL, but file %s has an ACL\n",
+                         file1, file2);
+                return 1;
+              }
+          }
+        acl_free (text2);
+        if (acl2 != (acl_t)NULL)
+          acl_free (acl2);
+        acl_free (text1);
+        if (acl1 != (acl_t)NULL)
+          acl_free (acl1);
+      }
+#elif HAVE_FACL && defined GETACL /* Solaris, Cygwin, not HP-UX */
+  int count1;
+  int count2;
+
+  count1 = acl (file1, GETACLCNT, 0, NULL);
+  if (count1 < 0 && errno == ENOSYS) /* Can happen on Solaris 10 with ZFS */
+    count1 = 0;
+  count2 = acl (file2, GETACLCNT, 0, NULL);
+  if (count2 < 0 && errno == ENOSYS) /* Can happen on Solaris 10 with ZFS */
+    count2 = 0;
+
+  if (count1 < 0)
+    {
+      fprintf (stderr, "error accessing the ACLs of file %s\n", file1);
+      fflush (stderr);
+      abort ();
+    }
+  if (count2 < 0)
+    {
+      fprintf (stderr, "error accessing the ACLs of file %s\n", file2);
+      fflush (stderr);
+      abort ();
+    }
+  if (count1 != count2)
+    {
+      fprintf (stderr, "files %s and %s have different number of ACLs: %d and %d\n",
+               file1, file2, count1, count2);
+      return 1;
+    }
+  else
+    {
+      aclent_t *entries1 = XNMALLOC (count1, aclent_t);
+      aclent_t *entries2 = XNMALLOC (count2, aclent_t);
+      int i;
+
+      if (count1 > 0 && acl (file1, GETACL, count1, entries1) < count1)
+        {
+          fprintf (stderr, "error retrieving the ACLs of file %s\n", file1);
+          fflush (stderr);
+          abort ();
+        }
+      if (count2 > 0 && acl (file2, GETACL, count2, entries2) < count1)
+        {
+          fprintf (stderr, "error retrieving the ACLs of file %s\n", file2);
+          fflush (stderr);
+          abort ();
+        }
+      for (i = 0; i < count1; i++)
+        {
+          if (entries1[i].a_type != entries2[i].a_type)
+            {
+              fprintf (stderr, "files %s and %s: different ACL entry #%d: different types %d and %d\n",
+                       file1, file2, i, entries1[i].a_type, entries2[i].a_type);
+              return 1;
+            }
+          if (entries1[i].a_id != entries2[i].a_id)
+            {
+              fprintf (stderr, "files %s and %s: different ACL entry #%d: different ids %d and %d\n",
+                       file1, file2, i, (int)entries1[i].a_id, (int)entries2[i].a_id);
+              return 1;
+            }
+          if (entries1[i].a_perm != entries2[i].a_perm)
+            {
+              fprintf (stderr, "files %s and %s: different ACL entry #%d: different permissions %03o and %03o\n",
+                       file1, file2, i, (unsigned int) entries1[i].a_perm, (unsigned int) entries2[i].a_perm);
+              return 1;
+            }
+        }
+      free (entries2);
+      free (entries1);
+    }
+# ifdef ACE_GETACL
+  count1 = acl (file1, ACE_GETACLCNT, 0, NULL);
+  if (count1 < 0 && errno == EINVAL)
+    count1 = 0;
+  count2 = acl (file2, ACE_GETACLCNT, 0, NULL);
+  if (count2 < 0 && errno == EINVAL)
+    count2 = 0;
+  if (count1 < 0)
+    {
+      fprintf (stderr, "error accessing the ACE-ACLs of file %s\n", file1);
+      fflush (stderr);
+      abort ();
+    }
+  if (count2 < 0)
+    {
+      fprintf (stderr, "error accessing the ACE-ACLs of file %s\n", file2);
+      fflush (stderr);
+      abort ();
+    }
+  {
+    ace_t *entries1 = XNMALLOC (count1, ace_t);
+    ace_t *entries2 = XNMALLOC (count2, ace_t);
+    int ret;
+    int i;
+
+    ret = acl (file1, ACE_GETACL, count1, entries1);
+    if (ret < 0 && errno == EINVAL)
+      count1 = 0;
+    else if (ret < count1)
+      {
+        fprintf (stderr, "error retrieving the ACE-ACLs of file %s\n", file1);
+        fflush (stderr);
+        abort ();
+      }
+    ret = acl (file2, ACE_GETACL, count2, entries2);
+    if (ret < 0 && errno == EINVAL)
+      count2 = 0;
+    else if (ret < count2)
+      {
+        fprintf (stderr, "error retrieving the ACE-ACLs of file %s\n", file2);
+        fflush (stderr);
+        abort ();
+      }
+
+    if (count1 != count2)
+      {
+        fprintf (stderr, "files %s and %s have different number of ACE-ACLs: %d and %d\n",
+                 file1, file2, count1, count2);
+        return 1;
+      }
+
+    for (i = 0; i < count1; i++)
+      {
+        if (entries1[i].a_type != entries2[i].a_type)
+          {
+            fprintf (stderr, "files %s and %s: different ACE-ACL entry #%d: different types %d and %d\n",
+                     file1, file2, i, entries1[i].a_type, entries2[i].a_type);
+            return 1;
+          }
+        if (entries1[i].a_who != entries2[i].a_who)
+          {
+            fprintf (stderr, "files %s and %s: different ACE-ACL entry #%d: different ids %d and %d\n",
+                     file1, file2, i, (int)entries1[i].a_who, (int)entries2[i].a_who);
+            return 1;
+          }
+        if (entries1[i].a_access_mask != entries2[i].a_access_mask)
+          {
+            fprintf (stderr, "files %s and %s: different ACE-ACL entry #%d: different access masks %03o and %03o\n",
+                     file1, file2, i, (unsigned int) entries1[i].a_access_mask, (unsigned int) entries2[i].a_access_mask);
+            return 1;
+          }
+        if (entries1[i].a_flags != entries2[i].a_flags)
+          {
+            fprintf (stderr, "files %s and %s: different ACE-ACL entry #%d: different flags 0x%x and 0x%x\n",
+                     file1, file2, i, (unsigned int) entries1[i].a_flags, (unsigned int) entries2[i].a_flags);
+            return 1;
+          }
+      }
+    free (entries2);
+    free (entries1);
+  }
+# endif
+#elif HAVE_GETACL /* HP-UX */
+  int count1;
+  int count2;
+
+  count1 = getacl (file1, 0, NULL);
+  if (count1 < 0
+      && (errno == ENOSYS || errno == EOPNOTSUPP || errno == ENOTSUP))
+    count1 = 0;
+  count2 = getacl (file2, 0, NULL);
+  if (count2 < 0
+      && (errno == ENOSYS || errno == EOPNOTSUPP || errno == ENOTSUP))
+    count2 = 0;
+
+  if (count1 < 0)
+    {
+      fprintf (stderr, "error accessing the ACLs of file %s\n", file1);
+      fflush (stderr);
+      abort ();
+    }
+  if (count2 < 0)
+    {
+      fprintf (stderr, "error accessing the ACLs of file %s\n", file2);
+      fflush (stderr);
+      abort ();
+    }
+  if (count1 != count2)
+    {
+      fprintf (stderr, "files %s and %s have different number of ACLs: %d and %d\n",
+               file1, file2, count1, count2);
+      return 1;
+    }
+  else if (count1 > 0)
+    {
+      struct acl_entry *entries1 = XNMALLOC (count1, struct acl_entry);
+      struct acl_entry *entries2 = XNMALLOC (count2, struct acl_entry);
+      int i;
+
+      if (getacl (file1, count1, entries1) < count1)
+        {
+          fprintf (stderr, "error retrieving the ACLs of file %s\n", file1);
+          fflush (stderr);
+          abort ();
+        }
+      if (getacl (file2, count2, entries2) < count1)
+        {
+          fprintf (stderr, "error retrieving the ACLs of file %s\n", file2);
+          fflush (stderr);
+          abort ();
+        }
+      for (i = 0; i < count1; i++)
+        {
+          if (entries1[i].uid != entries2[i].uid)
+            {
+              fprintf (stderr, "files %s and %s: different ACL entry #%d: different uids %d and %d\n",
+                       file1, file2, i, (int)entries1[i].uid, (int)entries2[i].uid);
+              return 1;
+            }
+          if (entries1[i].gid != entries2[i].gid)
+            {
+              fprintf (stderr, "files %s and %s: different ACL entry #%d: different gids %d and %d\n",
+                       file1, file2, i, (int)entries1[i].gid, (int)entries2[i].gid);
+              return 1;
+            }
+          if (entries1[i].mode != entries2[i].mode)
+            {
+              fprintf (stderr, "files %s and %s: different ACL entry #%d: different permissions %03o and %03o\n",
+                       file1, file2, i, (unsigned int) entries1[i].mode, (unsigned int) entries2[i].mode);
+              return 1;
+            }
+        }
+      free (entries2);
+      free (entries1);
+    }
+
+# if HAVE_ACLV_H /* HP-UX >= 11.11 */
+  {
+    struct acl dummy_entries[NACLVENTRIES];
+
+    count1 = acl ((char *) file1, ACL_CNT, NACLVENTRIES, dummy_entries);
+    if (count1 < 0
+        && (errno == ENOSYS || errno == EOPNOTSUPP || errno == EINVAL))
+      count1 = 0;
+    count2 = acl ((char *) file2, ACL_CNT, NACLVENTRIES, dummy_entries);
+    if (count2 < 0
+        && (errno == ENOSYS || errno == EOPNOTSUPP || errno == EINVAL))
+      count2 = 0;
+  }
+
+  if (count1 < 0)
+    {
+      fprintf (stderr, "error accessing the ACLs of file %s\n", file1);
+      fflush (stderr);
+      abort ();
+    }
+  if (count2 < 0)
+    {
+      fprintf (stderr, "error accessing the ACLs of file %s\n", file2);
+      fflush (stderr);
+      abort ();
+    }
+  if (count1 != count2)
+    {
+      fprintf (stderr, "files %s and %s have different number of ACLs: %d and %d\n",
+               file1, file2, count1, count2);
+      return 1;
+    }
+  else if (count1 > 0)
+    {
+      struct acl *entries1 = XNMALLOC (count1, struct acl);
+      struct acl *entries2 = XNMALLOC (count2, struct acl);
+      int i;
+
+      if (acl ((char *) file1, ACL_GET, count1, entries1) < count1)
+        {
+          fprintf (stderr, "error retrieving the ACLs of file %s\n", file1);
+          fflush (stderr);
+          abort ();
+        }
+      if (acl ((char *) file2, ACL_GET, count2, entries2) < count1)
+        {
+          fprintf (stderr, "error retrieving the ACLs of file %s\n", file2);
+          fflush (stderr);
+          abort ();
+        }
+      for (i = 0; i < count1; i++)
+        {
+          if (entries1[i].a_type != entries2[i].a_type)
+            {
+              fprintf (stderr, "files %s and %s: different ACL entry #%d: different types %d and %d\n",
+                       file1, file2, i, entries1[i].a_type, entries2[i].a_type);
+              return 1;
+            }
+          if (entries1[i].a_id != entries2[i].a_id)
+            {
+              fprintf (stderr, "files %s and %s: different ACL entry #%d: different ids %d and %d\n",
+                       file1, file2, i, (int)entries1[i].a_id, (int)entries2[i].a_id);
+              return 1;
+            }
+          if (entries1[i].a_perm != entries2[i].a_perm)
+            {
+              fprintf (stderr, "files %s and %s: different ACL entry #%d: different permissions %03o and %03o\n",
+                       file1, file2, i, (unsigned int) entries1[i].a_perm, (unsigned int) entries2[i].a_perm);
+              return 1;
+            }
+        }
+      free (entries2);
+      free (entries1);
+    }
+# endif
+#elif HAVE_ACLX_GET /* AIX */
+  acl_type_t type1;
+  char acl1[1000];
+  size_t aclsize1 = sizeof (acl1);
+  mode_t mode1;
+  char text1[1000];
+  size_t textsize1 = sizeof (text1);
+  acl_type_t type2;
+  char acl2[1000];
+  size_t aclsize2 = sizeof (acl2);
+  mode_t mode2;
+  char text2[1000];
+  size_t textsize2 = sizeof (text2);
+
+  /* The docs say that type1 being 0 is equivalent to ACL_ANY, but it is not
+     true, in AIX 5.3.  */
+  type1.u64 = ACL_ANY;
+  if (aclx_get (file1, 0, &type1, acl1, &aclsize1, &mode1) < 0)
+    {
+      if (errno == ENOSYS)
+        text1[0] = '\0';
+      else
+        {
+          fprintf (stderr, "error accessing the ACLs of file %s\n", file1);
+          fflush (stderr);
+          abort ();
+        }
+    }
+  else
+    if (aclx_printStr (text1, &textsize1, acl1, aclsize1, type1, file1, 0) < 0)
+      {
+        fprintf (stderr, "cannot convert the ACLs of file %s to text\n", file1);
+        fflush (stderr);
+        abort ();
+      }
+
+  /* The docs say that type2 being 0 is equivalent to ACL_ANY, but it is not
+     true, in AIX 5.3.  */
+  type2.u64 = ACL_ANY;
+  if (aclx_get (file2, 0, &type2, acl2, &aclsize2, &mode2) < 0)
+    {
+      if (errno == ENOSYS)
+        text2[0] = '\0';
+      else
+        {
+          fprintf (stderr, "error accessing the ACLs of file %s\n", file2);
+          fflush (stderr);
+          abort ();
+        }
+    }
+  else
+    if (aclx_printStr (text2, &textsize2, acl2, aclsize2, type2, file2, 0) < 0)
+      {
+        fprintf (stderr, "cannot convert the ACLs of file %s to text\n", file2);
+        fflush (stderr);
+        abort ();
+      }
+
+  if (strcmp (text1, text2) != 0)
+    {
+      fprintf (stderr, "files %s and %s have different ACLs:\n%s\n%s\n",
+               file1, file2, text1, text2);
+      return 1;
+    }
+#elif HAVE_STATACL /* older AIX */
+  union { struct acl a; char room[4096]; } acl1;
+  union { struct acl a; char room[4096]; } acl2;
+  unsigned int i;
+
+  if (statacl (file1, STX_NORMAL, &acl1.a, sizeof (acl1)) < 0)
+    {
+      fprintf (stderr, "error accessing the ACLs of file %s\n", file1);
+      fflush (stderr);
+      abort ();
+    }
+  if (statacl (file2, STX_NORMAL, &acl2.a, sizeof (acl2)) < 0)
+    {
+      fprintf (stderr, "error accessing the ACLs of file %s\n", file2);
+      fflush (stderr);
+      abort ();
+    }
+
+  if (acl1.a.acl_len != acl2.a.acl_len)
+    {
+      fprintf (stderr, "files %s and %s have different ACL lengths: %u and %u\n",
+               file1, file2, acl1.a.acl_len, acl2.a.acl_len);
+      return 1;
+    }
+  if (acl1.a.acl_mode != acl2.a.acl_mode)
+    {
+      fprintf (stderr, "files %s and %s have different ACL modes: %03o and %03o\n",
+               file1, file2, acl1.a.acl_mode, acl2.a.acl_mode);
+      return 1;
+    }
+  if (acl1.a.u_access != acl2.a.u_access
+      || acl1.a.g_access != acl2.a.g_access
+      || acl1.a.o_access != acl2.a.o_access)
+    {
+      fprintf (stderr, "files %s and %s have different ACL access masks: %03o %03o %03o and %03o %03o %03o\n",
+               file1, file2,
+               acl1.a.u_access, acl1.a.g_access, acl1.a.o_access,
+               acl2.a.u_access, acl2.a.g_access, acl2.a.o_access);
+      return 1;
+    }
+  if (memcmp (acl1.a.acl_ext, acl2.a.acl_ext, acl1.a.acl_len) != 0)
+    {
+      fprintf (stderr, "files %s and %s have different ACL entries\n",
+               file1, file2);
+      return 1;
+    }
+#elif HAVE_ACLSORT /* NonStop Kernel */
+  int count1;
+  int count2;
+
+  count1 = acl ((char *) file1, ACL_CNT, NACLENTRIES, NULL);
+  count2 = acl ((char *) file2, ACL_CNT, NACLENTRIES, NULL);
+
+  if (count1 < 0)
+    {
+      fprintf (stderr, "error accessing the ACLs of file %s\n", file1);
+      fflush (stderr);
+      abort ();
+    }
+  if (count2 < 0)
+    {
+      fprintf (stderr, "error accessing the ACLs of file %s\n", file2);
+      fflush (stderr);
+      abort ();
+    }
+  if (count1 != count2)
+    {
+      fprintf (stderr, "files %s and %s have different number of ACLs: %d and %d\n",
+               file1, file2, count1, count2);
+      return 1;
+    }
+  else if (count1 > 0)
+    {
+      struct acl *entries1 = XNMALLOC (count1, struct acl);
+      struct acl *entries2 = XNMALLOC (count2, struct acl);
+      int i;
+
+      if (acl ((char *) file1, ACL_GET, count1, entries1) < count1)
+        {
+          fprintf (stderr, "error retrieving the ACLs of file %s\n", file1);
+          fflush (stderr);
+          abort ();
+        }
+      if (acl ((char *) file2, ACL_GET, count2, entries2) < count1)
+        {
+          fprintf (stderr, "error retrieving the ACLs of file %s\n", file2);
+          fflush (stderr);
+          abort ();
+        }
+      for (i = 0; i < count1; i++)
+        {
+          if (entries1[i].a_type != entries2[i].a_type)
+            {
+              fprintf (stderr, "files %s and %s: different ACL entry #%d: different types %d and %d\n",
+                       file1, file2, i, entries1[i].a_type, entries2[i].a_type);
+              return 1;
+            }
+          if (entries1[i].a_id != entries2[i].a_id)
+            {
+              fprintf (stderr, "files %s and %s: different ACL entry #%d: different ids %d and %d\n",
+                       file1, file2, i, (int)entries1[i].a_id, (int)entries2[i].a_id);
+              return 1;
+            }
+          if (entries1[i].a_perm != entries2[i].a_perm)
+            {
+              fprintf (stderr, "files %s and %s: different ACL entry #%d: different permissions %03o and %03o\n",
+                       file1, file2, i, (unsigned int) entries1[i].a_perm, (unsigned int) entries2[i].a_perm);
+              return 1;
+            }
+        }
+      free (entries2);
+      free (entries1);
+    }
+#endif
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-sched.c b/gnulib-tests/test-sched.c
new file mode 100644
index 0000000..7fa4b66
--- /dev/null
+++ b/gnulib-tests/test-sched.c
@@ -0,0 +1,41 @@
+/* Test of <sched.h> substitute.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <sched.h>
+
+/* Check that 'struct sched_param' is defined.  */
+static struct sched_param a;
+
+/* Check that the SCHED_* macros are defined and compile-time constants.  */
+int b[] = { SCHED_FIFO, SCHED_RR, SCHED_OTHER };
+
+/* Check that the types are all defined.  */
+pid_t t1;
+
+static int f1;
+
+int
+main ()
+{
+  /* Check fields of 'struct sched_param'.  */
+  f1 = a.sched_priority;
+
+  return 0;
+}
diff --git a/gnulib-tests/test-select-fd.c b/gnulib-tests/test-select-fd.c
new file mode 100644
index 0000000..02f10c4
--- /dev/null
+++ b/gnulib-tests/test-select-fd.c
@@ -0,0 +1,72 @@
+/* Test of select() substitute, reading or writing from a given file descriptor.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/select.h>
+
+int
+main (int argc, char *argv[])
+{
+  if (argc == 4)
+    {
+      char mode = argv[1][0];
+
+      if (mode == 'r' || mode == 'w')
+        {
+          int fd = atoi (argv[2]);
+
+          if (fd >= 0)
+            {
+              const char *result_file_name = argv[3];
+              FILE *result_file = fopen (result_file_name, "wb");
+
+              if (result_file != NULL)
+                {
+                  fd_set fds;
+                  struct timeval timeout;
+                  int ret;
+
+                  FD_ZERO (&fds);
+                  FD_SET (fd, &fds);
+                  timeout.tv_sec = 0;
+                  timeout.tv_usec = 10000;
+                  ret = (mode == 'r'
+                         ? select (fd + 1, &fds, NULL, NULL, &timeout)
+                         : select (fd + 1, NULL, &fds, NULL, &timeout));
+                  if (ret < 0)
+                    {
+                      perror ("select failed");
+                      exit (1);
+                    }
+                  if ((ret == 0) != ! FD_ISSET (fd, &fds))
+                    {
+                      fprintf (stderr, "incorrect return value\n");
+                      exit (1);
+                    }
+                  fprintf (result_file, "%d\n", ret);
+                  exit (0);
+                }
+            }
+        }
+    }
+  fprintf (stderr, "Usage: test-select-fd mode fd result-file-name\n");
+  exit (1);
+}
diff --git a/gnulib-tests/test-select-in.sh b/gnulib-tests/test-select-in.sh
new file mode 100755
index 0000000..68176d3
--- /dev/null
+++ b/gnulib-tests/test-select-in.sh
@@ -0,0 +1,38 @@
+#!/bin/sh
+# Test select() on file descriptors opened for reading.
+
+# This test is known to fail on Solaris 2.6 and older, due to its handling
+# of /dev/null.
+
+tmpfiles=""
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles="$tmpfiles t-select-in.tmp"
+
+# Regular files.
+
+rm -f t-select-in.tmp
+${CHECKER} ./test-select-fd${EXEEXT} r 0 t-select-in.tmp < ./test-select-fd${EXEEXT}
+test `cat t-select-in.tmp` = "1" || exit 1
+
+# Pipes.
+
+rm -f t-select-in.tmp
+{ sleep 1; echo abc; } | \
+  { ${CHECKER} ./test-select-fd${EXEEXT} r 0 t-select-in.tmp; cat > /dev/null; }
+test `cat t-select-in.tmp` = "0" || exit 1
+
+rm -f t-select-in.tmp
+echo abc | { sleep 1; ${CHECKER} ./test-select-fd${EXEEXT} r 0 t-select-in.tmp; }
+test `cat t-select-in.tmp` = "1" || exit 1
+
+# Special files.
+# This part of the test is known to fail on Solaris 2.6 and older.
+
+rm -f t-select-in.tmp
+${CHECKER} ./test-select-fd${EXEEXT} r 0 t-select-in.tmp < /dev/null
+test `cat t-select-in.tmp` = "1" || exit 1
+
+rm -fr $tmpfiles
+
+exit 0
diff --git a/gnulib-tests/test-select-out.sh b/gnulib-tests/test-select-out.sh
new file mode 100755
index 0000000..dbeace5
--- /dev/null
+++ b/gnulib-tests/test-select-out.sh
@@ -0,0 +1,35 @@
+#!/bin/sh
+# Test select() on file descriptors opened for writing.
+
+tmpfiles=""
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles="$tmpfiles t-select-out.out t-select-out.tmp"
+
+# Regular files.
+
+rm -f t-select-out.tmp
+${CHECKER} ./test-select-fd${EXEEXT} w 1 t-select-out.tmp > t-select-out.out
+test `cat t-select-out.tmp` = "1" || exit 1
+
+# Pipes.
+
+if false; then # This test fails on some platforms.
+  rm -f t-select-out.tmp
+  ( { echo abc; ${CHECKER} ./test-select-fd${EXEEXT} w 1 t-select-out.tmp; } | { sleep 1; cat; } ) > /dev/null
+  test `cat t-select-out.tmp` = "0" || exit 1
+fi
+
+rm -f t-select-out.tmp
+( { sleep 1; echo abc; ${CHECKER} ./test-select-fd${EXEEXT} w 1 t-select-out.tmp; } | cat) > /dev/null
+test `cat t-select-out.tmp` = "1" || exit 1
+
+# Special files.
+
+rm -f t-select-out.tmp
+${CHECKER} ./test-select-fd${EXEEXT} w 1 t-select-out.tmp > /dev/null
+test `cat t-select-out.tmp` = "1" || exit 1
+
+rm -fr $tmpfiles
+
+exit 0
diff --git a/gnulib-tests/test-select-stdin.c b/gnulib-tests/test-select-stdin.c
new file mode 100644
index 0000000..aadba6e
--- /dev/null
+++ b/gnulib-tests/test-select-stdin.c
@@ -0,0 +1,83 @@
+/* Test of select() substitute, reading from stdin.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  printf ("Applying select() from standard input. Press Ctrl-C to abort.\n");
+  for (;;)
+    {
+      struct timeval before;
+      struct timeval after;
+      unsigned long spent_usec;
+      fd_set readfds;
+      struct timeval timeout;
+      int ret;
+
+      gettimeofday (&before, NULL);
+
+      FD_ZERO (&readfds);
+      FD_SET (0, &readfds);
+      timeout.tv_sec = 0;
+      timeout.tv_usec = 500000;
+      ret = select (1, &readfds, NULL, NULL, &timeout);
+
+      gettimeofday (&after, NULL);
+      spent_usec = (after.tv_sec - before.tv_sec) * 1000000
+                   + after.tv_usec - before.tv_usec;
+
+      if (ret < 0)
+        {
+          perror ("select failed");
+          exit (1);
+        }
+      if ((ret == 0) != ! FD_ISSET (0, &readfds))
+        {
+          fprintf (stderr, "incorrect return value\n");
+          exit (1);
+        }
+      if (ret == 0)
+        {
+          if (spent_usec < 250000)
+            {
+              fprintf (stderr, "returned too early\n");
+              exit (1);
+            }
+          /* Timeout */
+          printf (".");
+          ASSERT (fflush (stdout) == 0);
+        }
+      else
+        {
+          char c;
+
+          printf ("Input available! Trying to read 1 byte...\n");
+          ASSERT (read (0, &c, 1) == 1);
+        }
+    }
+}
diff --git a/gnulib-tests/test-select.c b/gnulib-tests/test-select.c
new file mode 100644
index 0000000..55ad7bc
--- /dev/null
+++ b/gnulib-tests/test-select.c
@@ -0,0 +1,34 @@
+/* Test of select() substitute.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini, 2008.  */
+
+#include <config.h>
+
+#include <sys/select.h>
+
+#include "signature.h"
+
+SIGNATURE_CHECK (select, int, (int, fd_set *, fd_set *, fd_set *,
+                               struct timeval *));
+
+#include "test-select.h"
+
+int
+main (void)
+{
+  return test_function (select);
+}
diff --git a/gnulib-tests/test-select.h b/gnulib-tests/test-select.h
new file mode 100644
index 0000000..45d0325
--- /dev/null
+++ b/gnulib-tests/test-select.h
@@ -0,0 +1,466 @@
+/* Test of select() substitute.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini, 2008.  */
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+
+#include "macros.h"
+
+#if defined _WIN32 && ! defined __CYGWIN__
+# define WINDOWS_NATIVE
+#endif
+
+#ifdef HAVE_SYS_WAIT_H
+# include <sys/wait.h>
+#endif
+
+#define TEST_PORT       12345
+
+
+typedef int (*select_fn) (int, fd_set *, fd_set *, fd_set *, struct timeval *);
+
+
+/* Minimal testing infrastructure.  */
+
+static int failures;
+
+static void
+failed (const char *reason)
+{
+  if (++failures > 1)
+    printf ("  ");
+  printf ("failed (%s)\n", reason);
+}
+
+static int
+test (void (*fn) (select_fn), select_fn my_select, const char *msg)
+{
+  failures = 0;
+  printf ("%s... ", msg);
+  fflush (stdout);
+  fn (my_select);
+
+  if (!failures)
+    printf ("passed\n");
+
+  return failures;
+}
+
+
+/* Funny socket code.  */
+
+static int
+open_server_socket (void)
+{
+  int s, x;
+  struct sockaddr_in ia;
+
+  s = socket (AF_INET, SOCK_STREAM, 0);
+
+  x = 1;
+  setsockopt (s, SOL_SOCKET, SO_REUSEPORT, &x, sizeof (x));
+
+  memset (&ia, 0, sizeof (ia));
+  ia.sin_family = AF_INET;
+  inet_pton (AF_INET, "127.0.0.1", &ia.sin_addr);
+  ia.sin_port = htons (TEST_PORT);
+  if (bind (s, (struct sockaddr *) &ia, sizeof (ia)) < 0)
+    {
+      perror ("bind");
+      exit (77);
+    }
+
+  if (listen (s, 1) < 0)
+    {
+      perror ("listen");
+      exit (77);
+    }
+
+  return s;
+}
+
+static int
+connect_to_socket (bool blocking)
+{
+  int s;
+  struct sockaddr_in ia;
+
+  s = socket (AF_INET, SOCK_STREAM, 0);
+
+  memset (&ia, 0, sizeof (ia));
+  ia.sin_family = AF_INET;
+  inet_pton (AF_INET, "127.0.0.1", &ia.sin_addr);
+  ia.sin_port = htons (TEST_PORT);
+
+  if (!blocking)
+    {
+#ifdef WINDOWS_NATIVE
+      unsigned long iMode = 1;
+      ioctl (s, FIONBIO, (char *) &iMode);
+
+#elif defined F_GETFL
+      int oldflags = fcntl (s, F_GETFL, NULL);
+
+      if (!(oldflags & O_NONBLOCK))
+        fcntl (s, F_SETFL, oldflags | O_NONBLOCK);
+#endif
+    }
+
+  if (connect (s, (struct sockaddr *) &ia, sizeof (ia)) < 0
+      && (blocking || errno != EINPROGRESS))
+    {
+      perror ("connect");
+      exit (77);
+    }
+
+  return s;
+}
+
+
+/* A slightly more convenient interface to select(2).
+   Waits until a specific event occurs on a file descriptor FD.
+   EV is a bit mask of events to look for:
+     SEL_IN - input can be polled without blocking,
+     SEL_OUT - output can be provided without blocking,
+     SEL_EXC - an exception occurred,
+   A maximum wait time is specified by TIMEOUT.
+   *TIMEOUT = { 0, 0 } means to return immediately,
+   TIMEOUT = NULL means to wait indefinitely.  */
+
+enum { SEL_IN = 1, SEL_OUT = 2, SEL_EXC = 4 };
+
+static int
+do_select (int fd, int ev, struct timeval *timeout, select_fn my_select)
+{
+  fd_set rfds, wfds, xfds;
+  int r, rev;
+
+  FD_ZERO (&rfds);
+  FD_ZERO (&wfds);
+  FD_ZERO (&xfds);
+  if (ev & SEL_IN)
+    FD_SET (fd, &rfds);
+  if (ev & SEL_OUT)
+    FD_SET (fd, &wfds);
+  if (ev & SEL_EXC)
+    FD_SET (fd, &xfds);
+  r = my_select (fd + 1, &rfds, &wfds, &xfds, timeout);
+  if (r < 0)
+    return r;
+
+  rev = 0;
+  if (FD_ISSET (fd, &rfds))
+    rev |= SEL_IN;
+  if (FD_ISSET (fd, &wfds))
+    rev |= SEL_OUT;
+  if (FD_ISSET (fd, &xfds))
+    rev |= SEL_EXC;
+  if (rev && r == 0)
+    failed ("select returned 0");
+  if (rev & ~ev)
+    failed ("select returned unrequested events");
+
+  return rev;
+}
+
+static int
+do_select_nowait (int fd, int ev, select_fn my_select)
+{
+  struct timeval tv0;
+  tv0.tv_sec = 0;
+  tv0.tv_usec = 0;
+  return do_select (fd, ev, &tv0, my_select);
+}
+
+static int
+do_select_wait (int fd, int ev, select_fn my_select)
+{
+  return do_select (fd, ev, NULL, my_select);
+}
+
+
+/* Test select(2) for TTYs.  */
+
+#ifdef INTERACTIVE
+static void
+test_tty (select_fn my_select)
+{
+  if (do_select_nowait (0, SEL_IN, my_select) != 0)
+    failed ("can read");
+  if (do_select_nowait (0, SEL_OUT, my_select) == 0)
+    failed ("cannot write");
+
+  if (do_select_wait (0, SEL_IN, my_select) == 0)
+    failed ("return with infinite timeout");
+
+  getchar ();
+  if (do_select_nowait (0, SEL_IN, my_select) != 0)
+    failed ("can read after getc");
+}
+#endif
+
+
+static int
+do_select_bad_nfd_nowait (int nfd, select_fn my_select)
+{
+  struct timeval tv0;
+  tv0.tv_sec = 0;
+  tv0.tv_usec = 0;
+  errno = 0;
+  return my_select (nfd, NULL, NULL, NULL, &tv0);
+}
+
+static void
+test_bad_nfd (select_fn my_select)
+{
+  if (do_select_bad_nfd_nowait (-1, my_select) != -1 || errno != EINVAL)
+    failed ("invalid errno after negative nfds");
+  /* Can't test FD_SETSIZE + 1 for EINVAL, since some systems allow
+     dynamically larger set size by redefining FD_SETSIZE anywhere up
+     to the actual maximum fd.  */
+#if 0
+  if (do_select_bad_nfd_nowait (FD_SETSIZE + 1, my_select) != -1
+      || errno != EINVAL)
+    failed ("invalid errno after bogus nfds");
+#endif
+}
+
+/* Test select(2) on invalid file descriptors.  */
+
+static int
+do_select_bad_fd (int fd, int ev, struct timeval *timeout, select_fn my_select)
+{
+  fd_set rfds, wfds, xfds;
+
+  FD_ZERO (&rfds);
+  FD_ZERO (&wfds);
+  FD_ZERO (&xfds);
+  if (ev & SEL_IN)
+    FD_SET (fd, &rfds);
+  if (ev & SEL_OUT)
+    FD_SET (fd, &wfds);
+  if (ev & SEL_EXC)
+    FD_SET (fd, &xfds);
+  errno = 0;
+  return my_select (fd + 1, &rfds, &wfds, &xfds, timeout);
+  /* In this case, when fd is invalid, on some platforms, the bit for fd
+     is left alone in the fd_set, whereas on other platforms it is cleared.
+     So, don't check the bit for fd here.  */
+}
+
+static int
+do_select_bad_fd_nowait (int fd, int ev, select_fn my_select)
+{
+  struct timeval tv0;
+  tv0.tv_sec = 0;
+  tv0.tv_usec = 0;
+  return do_select_bad_fd (fd, ev, &tv0, my_select);
+}
+
+static void
+test_bad_fd (select_fn my_select)
+{
+  /* This tests fails on OSF/1 and native Windows, even with fd = 16.  */
+#if !(defined __osf__ || defined WINDOWS_NATIVE)
+  int fd;
+
+  /* On Linux, Mac OS X, *BSD, values of fd like 99 or 399 are discarded
+     by the kernel early and therefore do *not* lead to EBADF, as required
+     by POSIX.  */
+# if defined __linux__ || (defined __APPLE__ && defined __MACH__) || (defined __FreeBSD__ || defined __DragonFly__) || defined __OpenBSD__ || defined __NetBSD__
+  fd = 14;
+# else
+  fd = 99;
+# endif
+  /* Even on the best POSIX compliant platforms, values of fd >= FD_SETSIZE
+     require an nfds argument that is > FD_SETSIZE and thus may lead to EINVAL,
+     not EBADF.  */
+  if (fd >= FD_SETSIZE)
+    fd = FD_SETSIZE - 1;
+  close (fd);
+
+  if (do_select_bad_fd_nowait (fd, SEL_IN, my_select) == 0 || errno != EBADF)
+    failed ("invalid fd among rfds");
+  if (do_select_bad_fd_nowait (fd, SEL_OUT, my_select) == 0 || errno != EBADF)
+    failed ("invalid fd among wfds");
+  if (do_select_bad_fd_nowait (fd, SEL_EXC, my_select) == 0 || errno != EBADF)
+    failed ("invalid fd among xfds");
+#endif
+}
+
+
+/* Test select(2) for unconnected nonblocking sockets.  */
+
+static void
+test_connect_first (select_fn my_select)
+{
+  int s = open_server_socket ();
+  struct sockaddr_in ia;
+  socklen_t addrlen;
+
+  int c1, c2;
+
+  if (do_select_nowait (s, SEL_IN | SEL_EXC, my_select) != 0)
+    failed ("can read, socket not connected");
+
+  c1 = connect_to_socket (false);
+
+  if (do_select_wait (s, SEL_IN | SEL_EXC, my_select) != SEL_IN)
+    failed ("expecting readability on passive socket");
+  if (do_select_nowait (s, SEL_IN | SEL_EXC, my_select) != SEL_IN)
+    failed ("expecting readability on passive socket");
+
+  addrlen = sizeof (ia);
+  c2 = accept (s, (struct sockaddr *) &ia, &addrlen);
+  ASSERT (close (s) == 0);
+  ASSERT (close (c1) == 0);
+  ASSERT (close (c2) == 0);
+}
+
+
+/* Test select(2) for unconnected blocking sockets.  */
+
+static void
+test_accept_first (select_fn my_select)
+{
+#ifndef WINDOWS_NATIVE
+  int s = open_server_socket ();
+  struct sockaddr_in ia;
+  socklen_t addrlen;
+  char buf[3];
+  int c, pid;
+
+  pid = fork ();
+  if (pid < 0)
+    return;
+
+  if (pid == 0)
+    {
+      addrlen = sizeof (ia);
+      c = accept (s, (struct sockaddr *) &ia, &addrlen);
+      ASSERT (close (s) == 0);
+      ASSERT (write (c, "foo", 3) == 3);
+      ASSERT (read (c, buf, 3) == 3);
+      shutdown (c, SHUT_RD);
+      ASSERT (close (c) == 0);
+      exit (0);
+    }
+  else
+    {
+      ASSERT (close (s) == 0);
+      c = connect_to_socket (true);
+      if (do_select_nowait (c, SEL_OUT, my_select) != SEL_OUT)
+        failed ("cannot write after blocking connect");
+      ASSERT (write (c, "foo", 3) == 3);
+      wait (&pid);
+      if (do_select_wait (c, SEL_IN, my_select) != SEL_IN)
+        failed ("cannot read data left in the socket by closed process");
+      ASSERT (read (c, buf, 3) == 3);
+      ASSERT (write (c, "foo", 3) == 3);
+      (void) close (c); /* may fail with errno = ECONNRESET */
+    }
+#endif
+}
+
+
+/* Common code for pipes and connected sockets.  */
+
+static void
+test_pair (int rd, int wd, select_fn my_select)
+{
+  char buf[3];
+  if (do_select_wait (wd, SEL_IN | SEL_OUT | SEL_EXC, my_select) != SEL_OUT)
+    failed ("expecting writability before writing");
+  if (do_select_nowait (wd, SEL_IN | SEL_OUT | SEL_EXC, my_select) != SEL_OUT)
+    failed ("expecting writability before writing");
+
+  ASSERT (write (wd, "foo", 3) == 3);
+  if (do_select_wait (rd, SEL_IN, my_select) != SEL_IN)
+    failed ("expecting readability after writing");
+  if (do_select_nowait (rd, SEL_IN, my_select) != SEL_IN)
+    failed ("expecting readability after writing");
+
+  ASSERT (read (rd, buf, 3) == 3);
+}
+
+
+/* Test select(2) on connected sockets.  */
+
+static void
+test_socket_pair (select_fn my_select)
+{
+  struct sockaddr_in ia;
+
+  socklen_t addrlen = sizeof (ia);
+  int s = open_server_socket ();
+  int c1 = connect_to_socket (false);
+  int c2 = accept (s, (struct sockaddr *) &ia, &addrlen);
+
+  ASSERT (close (s) == 0);
+
+  test_pair (c1, c2, my_select);
+  ASSERT (close (c1) == 0);
+  ASSERT (write (c2, "foo", 3) == 3);
+  (void) close (c2); /* may fail with errno = ECONNRESET */
+}
+
+
+/* Test select(2) on pipes.  */
+
+static void
+test_pipe (select_fn my_select)
+{
+  int fd[2];
+
+  ASSERT (pipe (fd) == 0);
+  test_pair (fd[0], fd[1], my_select);
+  ASSERT (close (fd[0]) == 0);
+  ASSERT (close (fd[1]) == 0);
+}
+
+
+/* Do them all.  */
+
+static int
+test_function (select_fn my_select)
+{
+  int result = 0;
+
+#ifdef INTERACTIVE
+  printf ("Please press Enter\n");
+  test (test_tty, "TTY", my_select);
+#endif
+
+  result += test (test_bad_nfd, my_select, "Invalid nfd test");
+  result += test (test_bad_fd, my_select, "Invalid fd test");
+  result += test (test_connect_first, my_select, "Unconnected socket test");
+  result += test (test_socket_pair, my_select, "Connected sockets test");
+  result += test (test_accept_first, my_select, "General socket test with fork");
+  result += test (test_pipe, my_select, "Pipe test");
+
+  return result;
+}
diff --git a/gnulib-tests/test-set-mode-acl-1.sh b/gnulib-tests/test-set-mode-acl-1.sh
new file mode 100755
index 0000000..73a4010
--- /dev/null
+++ b/gnulib-tests/test-set-mode-acl-1.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+# Test set-mode-acl on the file system of /var/tmp, which usually is a local
+# file system.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+
+if test -d /var/tmp; then
+  TMPDIR=/var/tmp
+else
+  TMPDIR=/tmp
+fi
+test -d $TMPDIR || Exit 77
+export TMPDIR
+
+$BOURNE_SHELL "${srcdir}/test-set-mode-acl.sh"
+
+Exit $?
diff --git a/gnulib-tests/test-set-mode-acl-2.sh b/gnulib-tests/test-set-mode-acl-2.sh
new file mode 100755
index 0000000..2f7c8c0
--- /dev/null
+++ b/gnulib-tests/test-set-mode-acl-2.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# Test set-mode-acl on the file system of the build directory, which may be
+# a local file system or NFS mounted.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+
+TMPDIR=`pwd`
+export TMPDIR
+
+$BOURNE_SHELL "${srcdir}/test-set-mode-acl.sh"
+
+Exit $?
diff --git a/gnulib-tests/test-set-mode-acl.c b/gnulib-tests/test-set-mode-acl.c
new file mode 100644
index 0000000..638eda7
--- /dev/null
+++ b/gnulib-tests/test-set-mode-acl.c
@@ -0,0 +1,41 @@
+/* Test of setting an ACL equivalent to a mode.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include "acl.h"
+
+#include <stdlib.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  const char *file;
+  int mode;
+
+  ASSERT (argc == 3);
+
+  file = argv[1];
+  mode = strtol (argv[2], NULL, 8);
+
+  set_acl (file, -1, mode);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-set-mode-acl.sh b/gnulib-tests/test-set-mode-acl.sh
new file mode 100755
index 0000000..fdcd64b
--- /dev/null
+++ b/gnulib-tests/test-set-mode-acl.sh
@@ -0,0 +1,234 @@
+#!/bin/sh
+
+# Show all commands when run with environment variable VERBOSE=yes.
+test -z "$VERBOSE" || set -x
+
+test "$USE_ACL" = 0 &&
+  {
+    echo "Skipping test: insufficient ACL support"
+    exit 77
+  }
+
+# func_tmpdir
+# creates a temporary directory.
+# Sets variable
+# - tmp             pathname of freshly created temporary directory
+func_tmpdir ()
+{
+  # Use the environment variable TMPDIR, falling back to /tmp. This allows
+  # users to specify a different temporary directory, for example, if their
+  # /tmp is filled up or too small.
+  : ${TMPDIR=/tmp}
+  {
+    # Use the mktemp program if available. If not available, hide the error
+    # message.
+    tmp=`(umask 077 && mktemp -d "$TMPDIR/glXXXXXX") 2>/dev/null` &&
+    test -n "$tmp" && test -d "$tmp"
+  } ||
+  {
+    # Use a simple mkdir command. It is guaranteed to fail if the directory
+    # already exists.  $RANDOM is bash specific and expands to empty in shells
+    # other than bash, ksh and zsh.  Its use does not increase security;
+    # rather, it minimizes the probability of failure in a very cluttered /tmp
+    # directory.
+    tmp=$TMPDIR/gl$$-$RANDOM
+    (umask 077 && mkdir "$tmp")
+  } ||
+  {
+    echo "$0: cannot create a temporary directory in $TMPDIR" >&2
+    exit 1
+  }
+}
+
+func_tmpdir
+# builddir may already be set by the script that invokes this one.
+case "$builddir" in
+  '') builddir=`pwd` ;;
+  /* | ?:*) ;;
+  *) builddir=`pwd`/$builddir ;;
+esac
+cd "$builddir" ||
+  {
+    echo "$0: cannot determine build directory (unreadable parent dir?)" >&2
+    exit 1
+  }
+# Switch to a temporary directory, to increase the likelihood that ACLs are
+# supported on the current file system. (/tmp is usually locally mounted,
+# whereas the build dir is sometimes NFS-mounted.)
+( cd "$tmp"
+
+  # Prepare tmpfile0.
+  rm -f tmpfile[0-9]
+  echo "Simple contents" > tmpfile0
+  chmod 600 tmpfile0
+
+  # Classification of the platform according to the programs available for
+  # manipulating ACLs.
+  # Possible values are:
+  #   linux, cygwin, freebsd, solaris, hpux, hpuxjfs, osf1, aix, macosx, irix, none.
+  # TODO: Support also native Windows platforms (mingw).
+  acl_flavor=none
+  if (getfacl tmpfile0 >/dev/null) 2>/dev/null; then
+    # Platforms with the getfacl and setfacl programs.
+    # Linux, FreeBSD, Solaris, Cygwin.
+    if (setfacl --help >/dev/null) 2>/dev/null; then
+      # Linux, Cygwin.
+      if (LC_ALL=C setfacl --help | grep ' --set-file' >/dev/null) 2>/dev/null; then
+        # Linux.
+        acl_flavor=linux
+      else
+        acl_flavor=cygwin
+      fi
+    else
+      # FreeBSD, Solaris.
+      if (LC_ALL=C setfacl 2>&1 | grep '\-x entries' >/dev/null) 2>/dev/null; then
+        # FreeBSD.
+        acl_flavor=freebsd
+      else
+        # Solaris.
+        acl_flavor=solaris
+      fi
+    fi
+  else
+    if (lsacl / >/dev/null) 2>/dev/null; then
+      # Platforms with the lsacl and chacl programs.
+      # HP-UX, sometimes also IRIX.
+      if (getacl tmpfile0 >/dev/null) 2>/dev/null; then
+        # HP-UX 11.11 or newer.
+        acl_flavor=hpuxjfs
+      else
+        # HP-UX 11.00.
+        acl_flavor=hpux
+      fi
+    else
+      if (getacl tmpfile0 >/dev/null) 2>/dev/null; then
+        # Tru64, NonStop Kernel.
+        if (getacl -m tmpfile0 >/dev/null) 2>/dev/null; then
+          # Tru64.
+          acl_flavor=osf1
+        else
+          # NonStop Kernel.
+          acl_flavor=nsk
+        fi
+      else
+        if (aclget tmpfile0 >/dev/null) 2>/dev/null; then
+          # AIX.
+          acl_flavor=aix
+        else
+          if (fsaclctl -v >/dev/null) 2>/dev/null; then
+            # Mac OS X.
+            acl_flavor=macosx
+          else
+            if test -f /sbin/chacl; then
+              # IRIX.
+              acl_flavor=irix
+            fi
+          fi
+        fi
+      fi
+    fi
+  fi
+
+  if test $acl_flavor != none; then
+    # A POSIX compliant 'id' program.
+    if test -f /usr/xpg4/bin/id; then
+      ID=/usr/xpg4/bin/id
+    else
+      ID=id
+    fi
+    # Use a user and group id different from the current one, to avoid
+    # redundant/ambiguous ACLs.
+    myuid=`$ID -u`
+    mygid=`$ID -g`
+    auid=1
+    if test "$auid" = "$myuid"; then auid=2; fi
+    agid=1
+    if test "$agid" = "$mygid"; then agid=2; fi
+  fi
+
+  for mode in 700 400 200 100 644 650 605 011 4700 2070; do
+    rm -f tmpfile0 tmpfile1 tmpfile2
+
+    # Prepare a file with no ACL.
+    echo "Anything" > tmpfile0
+    # If a mode is not supported (e.g. 2070 on FreeBSD), we skip testing it.
+    if chmod $mode tmpfile0 2>/dev/null; then
+      modestring0=`ls -l tmpfile0 | dd ibs=1 count=10 2>/dev/null`
+
+      # Prepare a file with no ACL.
+      echo "Some contents" > tmpfile1
+      chmod 600 tmpfile1
+
+      # Try to set the ACL to only the given mode.
+      ${CHECKER} "$builddir"/test-set-mode-acl${EXEEXT} tmpfile1 $mode
+      # Verify that tmpfile1 has no ACL and has the desired mode.
+      modestring=`ls -l tmpfile1 | dd ibs=1 count=10 2>/dev/null`
+      if test "x$modestring" != "x$modestring0"; then
+        echo "mode = $mode: tmpfile1 has wrong mode: $modestring" 1>&2
+        exit 1
+      fi
+      if test `${CHECKER} "$builddir"/test-file-has-acl${EXEEXT} tmpfile1` != no; then
+        echo "mode = $mode: tmpfile1 got an ACL" 1>&2
+        exit 1
+      fi
+
+      if test $acl_flavor != none; then
+
+        # Prepare a file with an ACL.
+        echo "Special contents" > tmpfile2
+        chmod 600 tmpfile2
+        # Set an ACL for a user (or group).
+        case $acl_flavor in
+          linux | freebsd | solaris)
+            setfacl -m user:$auid:1 tmpfile0
+            ;;
+          cygwin)
+            setfacl -m group:0:1 tmpfile0
+            ;;
+          hpux)
+            orig=`lsacl tmpfile0 | sed -e 's/ tmpfile0$//'`
+            chacl -r "${orig}($auid.%,--x)" tmpfile0
+            ;;
+          hpuxjfs)
+            orig=`lsacl tmpfile0 | sed -e 's/ tmpfile0$//'`
+            chacl -r "${orig}($auid.%,--x)" tmpfile0 \
+              || setacl -m user:$auid:1 tmpfile0
+            ;;
+          osf1)
+            setacl -u user:$auid:1 tmpfile0
+            ;;
+          nsk)
+            setacl -m user:$auid:1 tmpfile0
+            ;;
+          aix)
+            { aclget tmpfile0 | sed -e 's/disabled$/enabled/'; echo "        permit --x u:$auid"; } | aclput tmpfile0
+            ;;
+          macosx)
+            /bin/chmod +a "user:daemon allow execute" tmpfile0
+            ;;
+          irix)
+            /sbin/chacl user::rw-,group::---,other::---,user:$auid:--x tmpfile0
+            ;;
+        esac
+
+        # Try to set the ACL to only the given mode.
+        ${CHECKER} "$builddir"/test-set-mode-acl${EXEEXT} tmpfile2 $mode
+        # Verify that tmpfile2 has no ACL and has the desired mode.
+        modestring=`ls -l tmpfile2 | dd ibs=1 count=10 2>/dev/null`
+        if test "x$modestring" != "x$modestring0"; then
+          echo "mode = $mode: tmpfile2 has wrong mode: $modestring" 1>&2
+          exit 1
+        fi
+        if test `${CHECKER} "$builddir"/test-file-has-acl${EXEEXT} tmpfile2` != no; then
+          echo "mode = $mode: tmpfile2 still has an ACL" 1>&2
+          exit 1
+        fi
+      fi
+    fi
+  done
+
+  rm -f tmpfile[0-9]
+) || exit 1
+
+rm -rf "$tmp"
+exit 0
diff --git a/gnulib-tests/test-setenv.c b/gnulib-tests/test-setenv.c
new file mode 100644
index 0000000..2114d9e
--- /dev/null
+++ b/gnulib-tests/test-setenv.c
@@ -0,0 +1,56 @@
+/* Tests of setenv.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (setenv, int, (char const *, char const *, int));
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Test overwriting.  */
+  ASSERT (setenv ("a", "==", -1) == 0);
+  ASSERT (setenv ("a", "2", 0) == 0);
+  ASSERT (strcmp (getenv ("a"), "==") == 0);
+
+  /* Required to fail with EINVAL.  */
+  errno = 0;
+  ASSERT (setenv ("", "", 1) == -1);
+  ASSERT (errno == EINVAL);
+  errno = 0;
+  ASSERT (setenv ("a=b", "", 0) == -1);
+  ASSERT (errno == EINVAL);
+#if 0
+  /* glibc and gnulib's implementation guarantee this, but POSIX no
+     longer requires it: http://austingroupbugs.net/view.php?id=185  */
+  errno = 0;
+  ASSERT (setenv (NULL, "", 0) == -1);
+  ASSERT (errno == EINVAL);
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-setlocale1.c b/gnulib-tests/test-setlocale1.c
new file mode 100644
index 0000000..1dd41e3
--- /dev/null
+++ b/gnulib-tests/test-setlocale1.c
@@ -0,0 +1,61 @@
+/* Test of setting the current locale.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <locale.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (setlocale, char *, (int, const char *));
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  char *name1;
+  char *name2;
+
+  /* Try to set the locale by implicitly looking at the LC_ALL environment
+     variable.
+     configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  name1 = strdup (setlocale (LC_ALL, NULL));
+
+  /* Reset the locale.  */
+  if (setlocale (LC_ALL, "C") == NULL)
+    return 1;
+
+  /* Try to set the locale by explicitly looking at the LC_ALL environment
+     variable.
+     configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL)
+    return 1;
+
+  name2 = strdup (setlocale (LC_ALL, NULL));
+
+  /* Test that the two results are the same.  */
+  ASSERT (strcmp (name1, name2) == 0);
+  free (name1);
+  free (name2);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-setlocale1.sh b/gnulib-tests/test-setlocale1.sh
new file mode 100755
index 0000000..53ad09f
--- /dev/null
+++ b/gnulib-tests/test-setlocale1.sh
@@ -0,0 +1,34 @@
+#!/bin/sh
+
+: ${LOCALE_FR=fr_FR}
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+: ${LOCALE_JA=ja_JP}
+: ${LOCALE_ZH_CN=zh_CN.GB18030}
+
+if test $LOCALE_FR = none && test $LOCALE_FR_UTF8 = none \
+   && test $LOCALE_JA = none && test $LOCALE_ZH_CN = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no locale for testing is installed"
+  else
+    echo "Skipping test: no locale for testing is supported"
+  fi
+  exit 77
+fi
+
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR      ${CHECKER} ./test-setlocale1${EXEEXT} || exit 1
+fi
+
+if test $LOCALE_FR_UTF8 != none; then
+  LC_ALL=$LOCALE_FR_UTF8 ${CHECKER} ./test-setlocale1${EXEEXT} || exit 1
+fi
+
+if test $LOCALE_JA != none; then
+  LC_ALL=$LOCALE_JA      ${CHECKER} ./test-setlocale1${EXEEXT} || exit 1
+fi
+
+if test $LOCALE_ZH_CN != none; then
+  LC_ALL=$LOCALE_ZH_CN   ${CHECKER} ./test-setlocale1${EXEEXT} || exit 1
+fi
+
+exit 0
diff --git a/gnulib-tests/test-setlocale2.c b/gnulib-tests/test-setlocale2.c
new file mode 100644
index 0000000..d634689
--- /dev/null
+++ b/gnulib-tests/test-setlocale2.c
@@ -0,0 +1,55 @@
+/* Test of setting the current locale.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <locale.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int
+main ()
+{
+  /* Try to set the locale by implicitly looking at the LC_ALL environment
+     variable.  */
+  if (setlocale (LC_ALL, "") != NULL)
+    /* It was successful.  Check whether LC_CTYPE is non-trivial.  */
+    if (strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+      {
+        fprintf (stderr, "setlocale did not fail for implicit %s\n",
+                 getenv ("LC_ALL"));
+        return 1;
+      }
+
+  /* Reset the locale.  */
+  if (setlocale (LC_ALL, "C") == NULL)
+    return 1;
+
+  /* Try to set the locale by explicitly looking at the LC_ALL environment
+     variable.  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) != NULL)
+    /* It was successful.  Check whether LC_CTYPE is non-trivial.  */
+    if (strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+      {
+        fprintf (stderr, "setlocale did not fail for explicit %s\n",
+                 getenv ("LC_ALL"));
+        return 1;
+      }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-setlocale2.sh b/gnulib-tests/test-setlocale2.sh
new file mode 100755
index 0000000..79ea32f
--- /dev/null
+++ b/gnulib-tests/test-setlocale2.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+# Test locale names with likely unsupported encoding in Unix syntax.
+for name in ar_SA.ISO-8859-1 fr_FR.CP1251 zh_TW.GB18030 zh_CN.BIG5; do
+  env LC_ALL=$name ${CHECKER} ./test-setlocale2${EXEEXT} 1 || exit 1
+done
+
+# Test locale names with likely unsupported encoding in native Windows syntax.
+for name in "Arabic_Saudi Arabia.1252" "Arabic_Saudi Arabia.65001" \
+            French_France.65001 Japanese_Japan.65001 Turkish_Turkey.65001 \
+            Chinese_Taiwan.65001 Chinese_China.54936 Chinese_China.65001; do
+  # Here we use 'env' to set the LC_ALL environment variable, because on
+  # Solaris 11.0, the /bin/sh refuses to do it for Turkish_Turkey.65001.
+  env LC_ALL="$name" ${CHECKER} ./test-setlocale2${EXEEXT} 1 || exit 1
+done
+
+exit 0
diff --git a/gnulib-tests/test-setlocale_null-mt-all.c b/gnulib-tests/test-setlocale_null-mt-all.c
new file mode 100644
index 0000000..19bdb55
--- /dev/null
+++ b/gnulib-tests/test-setlocale_null-mt-all.c
@@ -0,0 +1,169 @@
+/* Multithread-safety test for setlocale_null_r (LC_ALL, ...).
+   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+
+/* Specification.  */
+#include <locale.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include "glthread/thread.h"
+
+/* We want to use the system's setlocale() function here, not the gnulib
+   override.  */
+#undef setlocale
+
+
+/* Some common locale names.  */
+
+#if defined _WIN32 && !defined __CYGWIN__
+# define ENGLISH "English_United States"
+# define GERMAN  "German_Germany"
+# define FRENCH  "French_France"
+# define ENCODING ".1252"
+#else
+# define ENGLISH "en_US"
+# define GERMAN  "de_DE"
+# define FRENCH  "fr_FR"
+# if defined __sgi
+#  define ENCODING ".ISO8859-15"
+# elif defined __hpux
+#  define ENCODING ".utf8"
+# else
+#  define ENCODING ".UTF-8"
+# endif
+#endif
+
+static const char LOCALE1[] = ENGLISH ENCODING;
+static const char LOCALE2[] = GERMAN ENCODING;
+static const char LOCALE3[] = FRENCH ENCODING;
+
+static char *expected;
+
+static void *
+thread1_func (void *arg)
+{
+  for (;;)
+    {
+      char buf[SETLOCALE_NULL_ALL_MAX];
+
+      if (setlocale_null_r (LC_ALL, buf, sizeof (buf)))
+        abort ();
+      if (strcmp (expected, buf) != 0)
+        {
+          fprintf (stderr, "thread1 disturbed by thread2!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+  return NULL;
+}
+
+static void *
+thread2_func (void *arg)
+{
+  for (;;)
+    {
+      char buf[SETLOCALE_NULL_ALL_MAX];
+
+      setlocale_null_r (LC_NUMERIC, buf, sizeof (buf));
+      setlocale_null_r (LC_ALL, buf, sizeof (buf));
+    }
+
+  /*NOTREACHED*/
+  return NULL;
+}
+
+int
+main (int argc, char *argv[])
+{
+  if (setlocale (LC_ALL, LOCALE1) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE1 not recognized\n");
+      return 77;
+    }
+  if (setlocale (LC_NUMERIC, LOCALE2) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE2 not recognized\n");
+      return 77;
+    }
+  if (setlocale (LC_TIME, LOCALE3) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE3 not recognized\n");
+      return 77;
+    }
+
+  expected = strdup (setlocale (LC_ALL, NULL));
+
+  /* Create the two threads.  */
+  gl_thread_create (thread1_func, NULL);
+  gl_thread_create (thread2_func, NULL);
+
+  /* Let them run for 5 seconds.  */
+  {
+    struct timespec duration;
+    duration.tv_sec = 5;
+    duration.tv_nsec = 0;
+
+    nanosleep (&duration, NULL);
+  }
+
+  return 0;
+}
+
+#else
+
+/* No multithreading available.  */
+
+#include <stdio.h>
+
+int
+main ()
+{
+  fputs ("Skipping test: multithreading not enabled\n", stderr);
+  return 77;
+}
+
+#endif
+
+/* Without locking, the results of this test would be:
+glibc                OK
+musl libc            crash < 10 sec
+macOS                crash < 1 sec
+FreeBSD              crash < 1 sec
+NetBSD               crash < 2 sec
+OpenBSD              crash < 1 sec
+AIX                  crash < 2 sec
+HP-UX                OK
+IRIX                 OK
+Solaris 10           OK
+Solaris 11.0         OK
+Solaris 11.4         OK
+Solaris OpenIndiana  OK
+Haiku                crash < 1 sec
+Cygwin               crash < 1 sec
+mingw                OK
+MSVC                 OK (assuming compiler option /MD !)
+*/
diff --git a/gnulib-tests/test-setlocale_null-mt-one.c b/gnulib-tests/test-setlocale_null-mt-one.c
new file mode 100644
index 0000000..fd6083a
--- /dev/null
+++ b/gnulib-tests/test-setlocale_null-mt-one.c
@@ -0,0 +1,169 @@
+/* Multithread-safety test for setlocale_null_r (LC_xxx, ...).
+   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+
+/* Specification.  */
+#include <locale.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include "glthread/thread.h"
+
+/* We want to use the system's setlocale() function here, not the gnulib
+   override.  */
+#undef setlocale
+
+
+/* Some common locale names.  */
+
+#if defined _WIN32 && !defined __CYGWIN__
+# define ENGLISH "English_United States"
+# define GERMAN  "German_Germany"
+# define FRENCH  "French_France"
+# define ENCODING ".1252"
+#else
+# define ENGLISH "en_US"
+# define GERMAN  "de_DE"
+# define FRENCH  "fr_FR"
+# if defined __sgi
+#  define ENCODING ".ISO8859-15"
+# elif defined __hpux
+#  define ENCODING ".utf8"
+# else
+#  define ENCODING ".UTF-8"
+# endif
+#endif
+
+static const char LOCALE1[] = ENGLISH ENCODING;
+static const char LOCALE2[] = GERMAN ENCODING;
+static const char LOCALE3[] = FRENCH ENCODING;
+
+static char *expected;
+
+static void *
+thread1_func (void *arg)
+{
+  for (;;)
+    {
+      char buf[SETLOCALE_NULL_MAX];
+
+      if (setlocale_null_r (LC_NUMERIC, buf, sizeof (buf)))
+        abort ();
+      if (strcmp (expected, buf) != 0)
+        {
+          fprintf (stderr, "thread1 disturbed by thread2!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+  return NULL;
+}
+
+static void *
+thread2_func (void *arg)
+{
+  for (;;)
+    {
+      char buf[SETLOCALE_NULL_MAX];
+
+      setlocale_null_r (LC_NUMERIC, buf, sizeof (buf));
+      setlocale_null_r (LC_TIME, buf, sizeof (buf));
+    }
+
+  /*NOTREACHED*/
+  return NULL;
+}
+
+int
+main (int argc, char *argv[])
+{
+  if (setlocale (LC_ALL, LOCALE1) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE1 not recognized\n");
+      return 77;
+    }
+  if (setlocale (LC_NUMERIC, LOCALE2) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE2 not recognized\n");
+      return 77;
+    }
+  if (setlocale (LC_TIME, LOCALE3) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE3 not recognized\n");
+      return 77;
+    }
+
+  expected = strdup (setlocale (LC_NUMERIC, NULL));
+
+  /* Create the two threads.  */
+  gl_thread_create (thread1_func, NULL);
+  gl_thread_create (thread2_func, NULL);
+
+  /* Let them run for 2 seconds.  */
+  {
+    struct timespec duration;
+    duration.tv_sec = 2;
+    duration.tv_nsec = 0;
+
+    nanosleep (&duration, NULL);
+  }
+
+  return 0;
+}
+
+#else
+
+/* No multithreading available.  */
+
+#include <stdio.h>
+
+int
+main ()
+{
+  fputs ("Skipping test: multithreading not enabled\n", stderr);
+  return 77;
+}
+
+#endif
+
+/* Without locking, the results of this test would be:
+glibc                OK
+musl libc            OK
+macOS                OK
+FreeBSD              OK
+NetBSD               OK
+OpenBSD              crash < 1 sec
+AIX                  crash < 2 sec
+HP-UX                OK
+IRIX                 OK
+Solaris 10           OK
+Solaris 11.0         OK
+Solaris 11.4         OK
+Solaris OpenIndiana  OK
+Haiku                OK
+Cygwin               OK
+mingw                OK
+MSVC                 OK (assuming compiler option /MD !)
+*/
diff --git a/gnulib-tests/test-setlocale_null.c b/gnulib-tests/test-setlocale_null.c
new file mode 100644
index 0000000..5a9329e
--- /dev/null
+++ b/gnulib-tests/test-setlocale_null.c
@@ -0,0 +1,32 @@
+/* Test of setlocale_null_r function.
+   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <locale.h>
+
+/* Check that SETLOCALE_NULL_ALL_MAX is a constant expression.  */
+static char buf[SETLOCALE_NULL_ALL_MAX];
+
+int
+main ()
+{
+  /* Check that setlocale_null_r() can be used with $(LIB_SETLOCALE_NULL).  */
+  return setlocale_null_r (LC_ALL, buf, sizeof (buf)) != 0;
+}
diff --git a/gnulib-tests/test-setsockopt.c b/gnulib-tests/test-setsockopt.c
new file mode 100644
index 0000000..d2456dd
--- /dev/null
+++ b/gnulib-tests/test-setsockopt.c
@@ -0,0 +1,55 @@
+/* Test setsockopt() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/socket.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (setsockopt, int, (int, int, int, const void *, socklen_t));
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "sockets.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  (void) gl_sockets_startup (SOCKETS_1_1);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    int value = 1;
+
+    errno = 0;
+    ASSERT (setsockopt (-1, SOL_SOCKET, SO_REUSEADDR, &value, sizeof (value))
+            == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    int value = 1;
+
+    close (99);
+    errno = 0;
+    ASSERT (setsockopt (99, SOL_SOCKET, SO_REUSEADDR, &value, sizeof (value))
+            == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-sha1.c b/gnulib-tests/test-sha1.c
new file mode 100644
index 0000000..d729f09
--- /dev/null
+++ b/gnulib-tests/test-sha1.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2005, 2008-2020 Free Software Foundation, Inc.
+ * Written by Simon Josefsson
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "sha1.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define TESTFILE "test-sha1.data"
+#include "test-digest.h"
+
+int
+main (void)
+{
+  const char *in1 = "abcdefgh";
+  const char *out1 = "\x42\x5a\xf1\x2a\x07\x43\x50\x2b"
+    "\x32\x2e\x93\xa0\x15\xbc\xf8\x68\xe3\x24\xd5\x6a";
+  char buf[SHA1_DIGEST_SIZE];
+
+  if (memcmp (sha1_buffer (in1, strlen (in1), buf),
+              out1, SHA1_DIGEST_SIZE) != 0)
+    {
+      size_t i;
+      printf ("expected:\n");
+      for (i = 0; i < SHA1_DIGEST_SIZE; i++)
+        printf ("%02x ", out1[i] & 0xFFu);
+      printf ("\ncomputed:\n");
+      for (i = 0; i < SHA1_DIGEST_SIZE; i++)
+        printf ("%02x ", buf[i] & 0xFFu);
+      printf ("\n");
+      return 1;
+    }
+
+  /* Test sha1_stream.  */
+  test_digest_on_files (sha1_stream, "sha1_stream", 20,
+                        "\xda\x39\xa3\xee\x5e\x6b\x4b\x0d\x32\x55\xbf\xef\x95\x60\x18\x90\xaf\xd8\x07\x09",
+                        "\x9c\x04\xcd\x63\x72\x07\x7e\x9b\x11\xf7\x0c\xa1\x11\xc9\x80\x7d\xc7\x13\x7e\x4b",
+                        "\x91\xab\x6b\x1b\x8d\x29\x25\x3c\xcb\x8d\xce\xb7\x7a\x25\x26\x2c\x92\xc9\x22\x09");
+
+  return 0;
+}
diff --git a/gnulib-tests/test-sha256.c b/gnulib-tests/test-sha256.c
new file mode 100644
index 0000000..bfe1b44
--- /dev/null
+++ b/gnulib-tests/test-sha256.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2018-2020 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "sha256.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define TESTFILE "test-sha256.data"
+#include "test-digest.h"
+
+int
+main (void)
+{
+  /* Test sha224_stream.  */
+  test_digest_on_files (sha224_stream, "sha224_stream", 28,
+                        "\xd1\x4a\x02\x8c\x2a\x3a\x2b\xc9\x47\x61\x02\xbb\x28\x82\x34\xc4\x15\xa2\xb0\x1f\x82\x8e\xa6\x2a\xc5\xb3\xe4\x2f",
+                        "\xe8\x87\x99\xb0\xd0\xd5\xbe\xcc\x67\x91\x83\x7f\xa9\x53\x88\xd4\x05\x6f\x12\x50\xa5\x11\xd1\x48\x29\x76\x66\x63",
+                        "\x86\xa2\x5a\xc3\x6a\x70\x8e\xf3\x4e\x78\x55\xf0\xb1\x97\x8a\xa8\x61\x78\x6c\xb8\x87\xcd\x5c\xf1\x19\x3b\x53\xe4");
+
+  /* Test sha256_stream.  */
+  test_digest_on_files (sha256_stream, "sha256_stream", 32,
+                        "\xe3\xb0\xc4\x42\x98\xfc\x1c\x14\x9a\xfb\xf4\xc8\x99\x6f\xb9\x24\x27\xae\x41\xe4\x64\x9b\x93\x4c\xa4\x95\x99\x1b\x78\x52\xb8\x55",
+                        "\xb4\x7c\xc0\xf1\x04\xb6\x2d\x4c\x7c\x30\xbc\xd6\x8f\xd8\xe6\x76\x13\xe2\x87\xdc\x4a\xd8\xc3\x10\xef\x10\xcb\xad\xea\x9c\x43\x80",
+                        "\xe5\x19\x95\xff\x0b\xc4\x95\xcf\x49\xdd\x31\x42\x0a\x6b\xe0\x6b\x38\xef\xef\x43\xab\xa6\xf4\x76\x64\x32\x99\x4a\x47\x1a\x0f\xb5");
+
+  return 0;
+}
diff --git a/gnulib-tests/test-sha512.c b/gnulib-tests/test-sha512.c
new file mode 100644
index 0000000..661c29d
--- /dev/null
+++ b/gnulib-tests/test-sha512.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2018-2020 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "sha512.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define TESTFILE "test-sha512.data"
+#include "test-digest.h"
+
+int
+main (void)
+{
+  /* Test sha384_stream.  */
+  test_digest_on_files (sha384_stream, "sha384_stream", 48,
+                        "\x38\xb0\x60\xa7\x51\xac\x96\x38\x4c\xd9\x32\x7e\xb1\xb1\xe3\x6a\x21\xfd\xb7\x11\x14\xbe\x07\x43\x4c\x0c\xc7\xbf\x63\xf6\xe1\xda\x27\x4e\xde\xbf\xe7\x6f\x65\xfb\xd5\x1a\xd2\xf1\x48\x98\xb9\x5b",
+                        "\xd5\x1d\x28\xd0\x14\x1e\x56\xf6\x92\x95\x2e\xa1\x48\x61\x89\x8e\x2b\x41\x7b\x92\x28\x31\xe0\xf4\xbc\xdb\xc3\x26\xa7\xfe\x1e\x9d\x95\x63\x18\x2e\x83\xd3\xa8\xaf\x66\xf6\x85\x36\xe0\xd4\x2b\x88",
+                        "\xab\x32\x29\xa1\xc8\x43\xce\x38\x85\x93\xb3\xa6\x7f\x5a\x36\xdc\xda\xf2\xac\x33\x22\x80\xee\xbc\x5b\x1b\x70\x8b\x9b\x96\x4b\xc1\x75\x60\x00\xae\xdc\xfd\x60\x70\x24\x7f\x0b\x8b\x3a\x89\xd3\xbb");
+
+  /* Test sha512_stream.  */
+  test_digest_on_files (sha512_stream, "sha512_stream", 64,
+                        "\xcf\x83\xe1\x35\x7e\xef\xb8\xbd\xf1\x54\x28\x50\xd6\x6d\x80\x07\xd6\x20\xe4\x05\x0b\x57\x15\xdc\x83\xf4\xa9\x21\xd3\x6c\xe9\xce\x47\xd0\xd1\x3c\x5d\x85\xf2\xb0\xff\x83\x18\xd2\x87\x7e\xec\x2f\x63\xb9\x31\xbd\x47\x41\x7a\x81\xa5\x38\x32\x7a\xf9\x27\xda\x3e",
+                        "\x02\x0d\xa0\xf4\xd8\xa4\xc8\xbf\xbc\x98\x27\x40\x27\x74\x00\x61\xd7\xdf\x52\xee\x07\x09\x1e\xd6\x59\x5a\x08\x3e\x0f\x45\x32\x7b\xbe\x59\x42\x43\x12\xd8\x6f\x21\x8b\x74\xed\x2e\x25\x50\x7a\xba\xf5\xc7\xa5\xfc\xf4\xca\xfc\xf9\x53\x8b\x70\x58\x08\xfd\x55\xec",
+                        "\x38\x34\x58\xf3\xde\x68\x70\x33\x0c\xa4\xd4\x71\x4d\x0f\x41\xc5\xed\xc9\xf4\x67\x3e\x19\x0f\x87\x2b\x53\x72\x00\xa8\x35\x73\xf7\x0b\xf1\xf2\x0d\x9a\xa8\xd6\x08\x65\x2f\xe2\x28\xbd\x2d\x0c\xd5\xd6\xd4\xd3\xb2\x84\x3e\x32\x32\x5d\x62\x54\x7b\x39\xfd\x47\x04");
+
+  return 0;
+}
diff --git a/gnulib-tests/test-sigaction.c b/gnulib-tests/test-sigaction.c
new file mode 100644
index 0000000..e48ba2b
--- /dev/null
+++ b/gnulib-tests/test-sigaction.c
@@ -0,0 +1,122 @@
+/* Test of sigaction() function.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2008.  */
+
+#include <config.h>
+
+#include <signal.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (sigaction, int, (int, struct sigaction const *,
+                                  struct sigaction *));
+
+#include <stddef.h>
+
+#include "macros.h"
+
+#ifndef SA_NOCLDSTOP
+# define SA_NOCLDSTOP 0
+#endif
+#ifndef SA_ONSTACK
+# define SA_ONSTACK 0
+#endif
+#ifndef SA_RESETHAND
+# define SA_RESETHAND 0
+#endif
+#ifndef SA_RESTART
+# define SA_RESTART 0
+#endif
+#ifndef SA_SIGINFO
+# define SA_SIGINFO 0
+#endif
+#ifndef SA_NOCLDWAIT
+# define SA_NOCLDWAIT 0
+#endif
+
+/* Define a mask of flags required by POSIX.  Some implementations
+   provide other flags as extensions, such as SA_RESTORER, that we
+   must ignore in this test.  */
+#define MASK_SA_FLAGS (SA_NOCLDSTOP | SA_ONSTACK | SA_RESETHAND | SA_RESTART \
+                       | SA_SIGINFO | SA_NOCLDWAIT | SA_NODEFER)
+
+/* This test is unsafe in the presence of an asynchronous SIGABRT,
+   because we install a signal-handler that is intentionally not
+   async-safe.  Hopefully, this does not lead to too many reports of
+   false failures, since people don't generally use 'kill -s SIGABRT'
+   to end a runaway program.  */
+
+static void
+handler (int sig)
+{
+  static int entry_count;
+  struct sigaction sa;
+  ASSERT (sig == SIGABRT);
+  ASSERT (sigaction (SIGABRT, NULL, &sa) == 0);
+  ASSERT ((sa.sa_flags & SA_SIGINFO) == 0);
+  switch (entry_count++)
+    {
+    case 0:
+      ASSERT ((sa.sa_flags & SA_RESETHAND) == 0);
+      ASSERT (sa.sa_handler == handler);
+      break;
+    case 1:
+      /* This assertion fails on glibc-2.3.6 systems with LinuxThreads,
+         when this program is linked with -lpthread, due to the sigaction()
+         override in libpthread.so.  */
+#if !(defined __GLIBC__ || defined __UCLIBC__)
+      ASSERT (sa.sa_handler == SIG_DFL);
+#endif
+      break;
+    default:
+      ASSERT (0);
+    }
+}
+
+int
+main (void)
+{
+  struct sigaction sa;
+  struct sigaction old_sa;
+  sa.sa_handler = handler;
+
+  sa.sa_flags = 0;
+  ASSERT (sigemptyset (&sa.sa_mask) == 0);
+  ASSERT (sigaction (SIGABRT, &sa, NULL) == 0);
+  ASSERT (raise (SIGABRT) == 0);
+
+  sa.sa_flags = SA_RESETHAND | SA_NODEFER;
+  ASSERT (sigaction (SIGABRT, &sa, &old_sa) == 0);
+  ASSERT ((old_sa.sa_flags & MASK_SA_FLAGS) == 0);
+  ASSERT (old_sa.sa_handler == handler);
+  ASSERT (raise (SIGABRT) == 0);
+
+  sa.sa_handler = SIG_DFL;
+  ASSERT (sigaction (SIGABRT, &sa, &old_sa) == 0);
+  ASSERT ((old_sa.sa_flags & SA_SIGINFO) == 0);
+#if !(defined __GLIBC__ || defined __UCLIBC__) /* see above */
+  ASSERT (old_sa.sa_handler == SIG_DFL);
+#endif
+
+  sa.sa_handler = SIG_IGN;
+  ASSERT (sigaction (SIGABRT, &sa, NULL) == 0);
+  ASSERT (raise (SIGABRT) == 0);
+  ASSERT (sigaction (SIGABRT, NULL, &old_sa) == 0);
+  ASSERT (old_sa.sa_handler == SIG_IGN);
+  ASSERT (raise (SIGABRT) == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-signal-h.c b/gnulib-tests/test-signal-h.c
new file mode 100644
index 0000000..a504f56
--- /dev/null
+++ b/gnulib-tests/test-signal-h.c
@@ -0,0 +1,129 @@
+/* Test of <signal.h> substitute.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <signal.h>
+
+/* Check for required types.  */
+struct
+{
+  size_t a;
+  uid_t b;
+  volatile sig_atomic_t c;
+  sigset_t d;
+  pid_t e;
+#if 0
+  /* Not guaranteed by gnulib.  */
+  pthread_t f;
+  struct timespec g;
+#endif
+} s;
+
+/* Check that NSIG is defined.  */
+int nsig = NSIG;
+
+int
+main (void)
+{
+  switch (0)
+    {
+      /* The following are guaranteed by C.  */
+    case 0:
+    case SIGABRT:
+    case SIGFPE:
+    case SIGILL:
+    case SIGINT:
+    case SIGSEGV:
+    case SIGTERM:
+      /* The following is guaranteed by gnulib.  */
+#if GNULIB_SIGPIPE || defined SIGPIPE
+    case SIGPIPE:
+#endif
+      /* Ensure no conflict with other standardized names.  */
+#ifdef SIGALRM
+    case SIGALRM:
+#endif
+      /* On Haiku, SIGBUS is mistakenly equal to SIGSEGV.  */
+#if defined SIGBUS && SIGBUS != SIGSEGV
+    case SIGBUS:
+#endif
+#ifdef SIGCHLD
+    case SIGCHLD:
+#endif
+#ifdef SIGCONT
+    case SIGCONT:
+#endif
+#ifdef SIGHUP
+    case SIGHUP:
+#endif
+#ifdef SIGKILL
+    case SIGKILL:
+#endif
+#ifdef SIGQUIT
+    case SIGQUIT:
+#endif
+#ifdef SIGSTOP
+    case SIGSTOP:
+#endif
+#ifdef SIGTSTP
+    case SIGTSTP:
+#endif
+#ifdef SIGTTIN
+    case SIGTTIN:
+#endif
+#ifdef SIGTTOU
+    case SIGTTOU:
+#endif
+#ifdef SIGUSR1
+    case SIGUSR1:
+#endif
+#ifdef SIGUSR2
+    case SIGUSR2:
+#endif
+#ifdef SIGSYS
+    case SIGSYS:
+#endif
+#ifdef SIGTRAP
+    case SIGTRAP:
+#endif
+#ifdef SIGURG
+    case SIGURG:
+#endif
+#ifdef SIGVTALRM
+    case SIGVTALRM:
+#endif
+#ifdef SIGXCPU
+    case SIGXCPU:
+#endif
+#ifdef SIGXFSZ
+    case SIGXFSZ:
+#endif
+      /* SIGRTMIN and SIGRTMAX need not be compile-time constants.  */
+#if 0
+# ifdef SIGRTMIN
+    case SIGRTMIN:
+# endif
+# ifdef SIGRTMAX
+    case SIGRTMAX:
+# endif
+#endif
+      ;
+    }
+  return s.a + s.b + s.c + s.e;
+}
diff --git a/gnulib-tests/test-signbit.c b/gnulib-tests/test-signbit.c
new file mode 100644
index 0000000..658e98d
--- /dev/null
+++ b/gnulib-tests/test-signbit.c
@@ -0,0 +1,187 @@
+/* Test of signbit() substitute.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <math.h>
+
+/* signbit must be a macro.  */
+#ifndef signbit
+# error missing declaration
+#endif
+
+#include <float.h>
+#include <limits.h>
+
+#include "minus-zero.h"
+#include "infinity.h"
+#include "macros.h"
+
+float zerof = 0.0f;
+double zerod = 0.0;
+long double zerol = 0.0L;
+
+static void
+test_signbitf ()
+{
+  /* Finite values.  */
+  ASSERT (!signbit (3.141f));
+  ASSERT (!signbit (3.141e30f));
+  ASSERT (!signbit (3.141e-30f));
+  ASSERT (signbit (-2.718f));
+  ASSERT (signbit (-2.718e30f));
+  ASSERT (signbit (-2.718e-30f));
+  /* Zeros.  */
+  ASSERT (!signbit (0.0f));
+  if (1.0f / minus_zerof < 0)
+    ASSERT (signbit (minus_zerof));
+  else
+    ASSERT (!signbit (minus_zerof));
+  /* Infinite values.  */
+  ASSERT (!signbit (Infinityf ()));
+  ASSERT (signbit (- Infinityf ()));
+  /* Quiet NaN.  */
+  (void) signbit (zerof / zerof);
+#if defined FLT_EXPBIT0_WORD && defined FLT_EXPBIT0_BIT
+  /* Signalling NaN.  */
+  {
+    #define NWORDS \
+      ((sizeof (float) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+    typedef union { float value; unsigned int word[NWORDS]; } memory_float;
+    memory_float m;
+    m.value = zerof / zerof;
+# if FLT_EXPBIT0_BIT > 0
+    m.word[FLT_EXPBIT0_WORD] ^= (unsigned int) 1 << (FLT_EXPBIT0_BIT - 1);
+# else
+    m.word[FLT_EXPBIT0_WORD + (FLT_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)]
+      ^= (unsigned int) 1 << (sizeof (unsigned int) * CHAR_BIT - 1);
+# endif
+    if (FLT_EXPBIT0_WORD < NWORDS / 2)
+      m.word[FLT_EXPBIT0_WORD + 1] |= (unsigned int) 1 << FLT_EXPBIT0_BIT;
+    else
+      m.word[0] |= (unsigned int) 1;
+    (void) signbit (m.value);
+    #undef NWORDS
+  }
+#endif
+}
+
+static void
+test_signbitd ()
+{
+  /* Finite values.  */
+  ASSERT (!signbit (3.141));
+  ASSERT (!signbit (3.141e30));
+  ASSERT (!signbit (3.141e-30));
+  ASSERT (signbit (-2.718));
+  ASSERT (signbit (-2.718e30));
+  ASSERT (signbit (-2.718e-30));
+  /* Zeros.  */
+  ASSERT (!signbit (0.0));
+  if (1.0 / minus_zerod < 0)
+    ASSERT (signbit (minus_zerod));
+  else
+    ASSERT (!signbit (minus_zerod));
+  /* Infinite values.  */
+  ASSERT (!signbit (Infinityd ()));
+  ASSERT (signbit (- Infinityd ()));
+  /* Quiet NaN.  */
+  (void) signbit (zerod / zerod);
+#if defined DBL_EXPBIT0_WORD && defined DBL_EXPBIT0_BIT
+  /* Signalling NaN.  */
+  {
+    #define NWORDS \
+      ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+    typedef union { double value; unsigned int word[NWORDS]; } memory_double;
+    memory_double m;
+    m.value = zerod / zerod;
+# if DBL_EXPBIT0_BIT > 0
+    m.word[DBL_EXPBIT0_WORD] ^= (unsigned int) 1 << (DBL_EXPBIT0_BIT - 1);
+# else
+    m.word[DBL_EXPBIT0_WORD + (DBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)]
+      ^= (unsigned int) 1 << (sizeof (unsigned int) * CHAR_BIT - 1);
+# endif
+    m.word[DBL_EXPBIT0_WORD + (DBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)]
+      |= (unsigned int) 1 << DBL_EXPBIT0_BIT;
+    (void) signbit (m.value);
+    #undef NWORDS
+  }
+#endif
+}
+
+static void
+test_signbitl ()
+{
+  /* Finite values.  */
+  ASSERT (!signbit (3.141L));
+  ASSERT (!signbit (3.141e30L));
+  ASSERT (!signbit (3.141e-30L));
+  ASSERT (signbit (-2.718L));
+  ASSERT (signbit (-2.718e30L));
+  ASSERT (signbit (-2.718e-30L));
+  /* Zeros.  */
+  ASSERT (!signbit (0.0L));
+  if (1.0L / minus_zerol < 0)
+    ASSERT (signbit (minus_zerol));
+  else
+    ASSERT (!signbit (minus_zerol));
+  /* Infinite values.  */
+  ASSERT (!signbit (Infinityl ()));
+  ASSERT (signbit (- Infinityl ()));
+  /* Quiet NaN.  */
+  (void) signbit (zerol / zerol);
+#if defined LDBL_EXPBIT0_WORD && defined LDBL_EXPBIT0_BIT
+  /* Signalling NaN.  */
+  {
+    #define NWORDS \
+      ((sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+    typedef union { long double value; unsigned int word[NWORDS]; } memory_long_double;
+
+#if defined __powerpc__ && LDBL_MANT_DIG == 106
+    /* This is PowerPC "double double", a pair of two doubles.  Inf and Nan are
+       represented as the corresponding 64-bit IEEE values in the first double;
+       the second is ignored.  Manipulate only the first double.  */
+    #undef NWORDS
+    #define NWORDS \
+      ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+#endif
+
+    memory_long_double m;
+    m.value = zerol / zerol;
+# if LDBL_EXPBIT0_BIT > 0
+    m.word[LDBL_EXPBIT0_WORD] ^= (unsigned int) 1 << (LDBL_EXPBIT0_BIT - 1);
+# else
+    m.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)]
+      ^= (unsigned int) 1 << (sizeof (unsigned int) * CHAR_BIT - 1);
+# endif
+    m.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)]
+      |= (unsigned int) 1 << LDBL_EXPBIT0_BIT;
+    (void) signbit (m.value);
+    #undef NWORDS
+  }
+#endif
+}
+
+int
+main ()
+{
+  test_signbitf ();
+  test_signbitd ();
+  test_signbitl ();
+  return 0;
+}
diff --git a/gnulib-tests/test-sigprocmask.c b/gnulib-tests/test-sigprocmask.c
new file mode 100644
index 0000000..df3602e
--- /dev/null
+++ b/gnulib-tests/test-sigprocmask.c
@@ -0,0 +1,102 @@
+/* Test of sigprocmask.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include <signal.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (sigprocmask, int, (int, const sigset_t *, sigset_t *));
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#if !(defined _WIN32 && !defined __CYGWIN__)
+
+static volatile int sigint_occurred;
+
+static void
+sigint_handler (int sig)
+{
+  sigint_occurred++;
+}
+
+int
+main (int argc, char *argv[])
+{
+  sigset_t set;
+  pid_t pid = getpid ();
+  char command[80];
+
+  if (sizeof (int) < sizeof pid && 0x7fffffff < pid)
+    {
+      fputs ("Skipping test: pid too large\n", stderr);
+      return 77;
+    }
+
+  signal (SIGINT, sigint_handler);
+
+  sigemptyset (&set);
+  sigaddset (&set, SIGINT);
+
+  /* Check error handling.  */
+  ASSERT (sigprocmask (1729, &set, NULL) == -1);
+  ASSERT (errno == EINVAL);
+
+  /* Block SIGINT.  */
+  ASSERT (sigprocmask (SIG_BLOCK, &set, NULL) == 0);
+
+  /* Request a SIGINT signal from outside.  */
+  sprintf (command, "sh -c 'sleep 1; kill -%d %d' &", SIGINT, (int) pid);
+  ASSERT (system (command) == 0);
+
+  /* Wait.  */
+  sleep (2);
+
+  /* The signal should not have arrived yet, because it is blocked.  */
+  ASSERT (sigint_occurred == 0);
+
+  /* Unblock SIGINT.  */
+  ASSERT (sigprocmask (SIG_UNBLOCK, &set, NULL) == 0);
+
+  /* The signal should have arrived now, because POSIX says
+       "If there are any pending unblocked signals after the call to
+        sigprocmask(), at least one of those signals shall be delivered
+        before the call to sigprocmask() returns."  */
+  ASSERT (sigint_occurred == 1);
+
+  return 0;
+}
+
+#else
+
+/* On native Windows, getpid() values and the arguments that are passed to
+   the (Cygwin?) 'kill' program are not necessarily related.  */
+
+int
+main ()
+{
+  fputs ("Skipping test: native Windows platform\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/gnulib-tests/test-sleep.c b/gnulib-tests/test-sleep.c
new file mode 100644
index 0000000..cb659ba
--- /dev/null
+++ b/gnulib-tests/test-sleep.c
@@ -0,0 +1,58 @@
+/* Test of sleep() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (sleep, unsigned int, (unsigned int));
+
+#include <signal.h>
+
+#include "macros.h"
+
+#if HAVE_DECL_ALARM
+static void
+handle_alarm (int sig)
+{
+  if (sig != SIGALRM)
+    _exit (1);
+}
+#endif
+
+int
+main (void)
+{
+  ASSERT (sleep (1) <= 1);
+
+  ASSERT (sleep (0) == 0);
+
+#if HAVE_DECL_ALARM
+  {
+    const unsigned int pentecost = 50 * 24 * 60 * 60; /* 50 days.  */
+    unsigned int remaining;
+    signal (SIGALRM, handle_alarm);
+    alarm (1);
+    remaining = sleep (pentecost);
+    ASSERT (pentecost - 10 < remaining && remaining <= pentecost);
+  }
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-snprintf.c b/gnulib-tests/test-snprintf.c
new file mode 100644
index 0000000..1cbab66
--- /dev/null
+++ b/gnulib-tests/test-snprintf.c
@@ -0,0 +1,72 @@
+/* Test of snprintf() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (snprintf, int, (char *, size_t, char const *, ...));
+
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  char buf[8];
+  int size;
+  int retval;
+
+  retval = snprintf (NULL, 0, "%d", 12345);
+  ASSERT (retval == 5);
+
+  for (size = 0; size <= 8; size++)
+    {
+      memcpy (buf, "DEADBEEF", 8);
+      retval = snprintf (buf, size, "%d", 12345);
+      ASSERT (retval == 5);
+      if (size < 6)
+        {
+          if (size > 0)
+            {
+              ASSERT (memcmp (buf, "12345", size - 1) == 0);
+              ASSERT (buf[size - 1] == '\0' || buf[size - 1] == '0' + size);
+            }
+#if !CHECK_SNPRINTF_POSIX
+          if (size > 0)
+#endif
+            ASSERT (memcmp (buf + size, &"DEADBEEF"[size], 8 - size) == 0);
+        }
+      else
+        {
+          ASSERT (memcmp (buf, "12345\0EF", 8) == 0);
+        }
+    }
+
+  /* Test the support of the POSIX/XSI format strings with positions.  */
+  {
+    char result[100];
+    retval = snprintf (result, sizeof (result), "%2$d %1$d", 33, 55);
+    ASSERT (strcmp (result, "55 33") == 0);
+    ASSERT (retval == strlen (result));
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-sockets.c b/gnulib-tests/test-sockets.c
new file mode 100644
index 0000000..cd35952
--- /dev/null
+++ b/gnulib-tests/test-sockets.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2008-2020 Free Software Foundation, Inc.
+ * Written by Simon Josefsson.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "sockets.h"
+
+int
+main (void)
+{
+  int err;
+
+  err = gl_sockets_startup (SOCKETS_1_1);
+  if (err != 0)
+    {
+      printf ("wsastartup failed %d\n", err);
+      return 1;
+    }
+
+  err = gl_sockets_cleanup ();
+  if (err != 0)
+    {
+      printf ("wsacleanup failed %d\n", err);
+      return 1;
+    }
+
+  (void) gl_fd_to_handle (0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-stat-time.c b/gnulib-tests/test-stat-time.c
new file mode 100644
index 0000000..86d4346
--- /dev/null
+++ b/gnulib-tests/test-stat-time.c
@@ -0,0 +1,248 @@
+/* Test of <stat-time.h>.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by James Youngman <jay@gnu.org>, 2007.  */
+
+#include <config.h>
+
+#include "stat-time.h"
+
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <time.h>
+
+#include "macros.h"
+
+#define BASE "test-stat-time.t"
+#include "nap.h"
+
+enum { NFILES = 4 };
+
+static char filename_stamp1[50];
+static char filename_testfile[50];
+static char filename_stamp2[50];
+static char filename_stamp3[50];
+
+/* Use file names that are different at each run.
+   This is necessary for test_birthtime() to pass on native Windows:
+   On this platform, the file system apparently remembers the creation time
+   of a file even after it is removed and created anew.  See
+   "Windows NT Contains File System Tunneling Capabilities"
+   <https://support.microsoft.com/en-us/help/172190/>  */
+static void
+initialize_filenames (void)
+{
+  long t = (long) time (NULL);
+  sprintf (filename_stamp1,   "t-stt-%ld-stamp1", t);
+  sprintf (filename_testfile, "t-stt-%ld-testfile", t);
+  sprintf (filename_stamp2,   "t-stt-%ld-stamp2", t);
+  sprintf (filename_stamp3,   "t-stt-%ld-stamp3", t);
+}
+
+static int
+force_unlink (const char *filename)
+{
+  /* This chmod is necessary on mingw, where unlink() of a read-only file
+     fails with EPERM.  */
+  chmod (filename, 0600);
+  return unlink (filename);
+}
+
+static void
+cleanup (int sig)
+{
+  /* Remove temporary files.  */
+  force_unlink (filename_stamp1);
+  force_unlink (filename_testfile);
+  force_unlink (filename_stamp2);
+  force_unlink (filename_stamp3);
+
+  if (sig != 0)
+    _exit (1);
+}
+
+static int
+open_file (const char *filename, int flags)
+{
+  int fd = open (filename, flags | O_WRONLY, 0500);
+  if (fd >= 0)
+    {
+      close (fd);
+      return 1;
+    }
+  else
+    {
+      return 0;
+    }
+}
+
+static void
+create_file (const char *filename)
+{
+  ASSERT (open_file (filename, O_CREAT | O_EXCL));
+}
+
+static void
+do_stat (const char *filename, struct stat *p)
+{
+  ASSERT (stat (filename, p) == 0);
+}
+
+static void
+prepare_test (struct stat *statinfo, struct timespec *modtimes)
+{
+  int i;
+
+  create_file (filename_stamp1);
+  nap ();
+  create_file (filename_testfile);
+  nap ();
+  create_file (filename_stamp2);
+  nap ();
+  ASSERT (chmod (filename_testfile, 0400) == 0);
+  nap ();
+  create_file (filename_stamp3);
+
+  do_stat (filename_stamp1,   &statinfo[0]);
+  do_stat (filename_testfile, &statinfo[1]);
+  do_stat (filename_stamp2,   &statinfo[2]);
+  do_stat (filename_stamp3,   &statinfo[3]);
+
+  /* Now use our access functions. */
+  for (i = 0; i < NFILES; ++i)
+    {
+      modtimes[i] = get_stat_mtime (&statinfo[i]);
+    }
+}
+
+static void
+test_mtime (const struct stat *statinfo, struct timespec *modtimes)
+{
+  int i;
+
+  /* Use the struct stat fields directly. */
+  /* mtime(stamp1) < mtime(stamp2) */
+  ASSERT (statinfo[0].st_mtime < statinfo[2].st_mtime
+          || (statinfo[0].st_mtime == statinfo[2].st_mtime
+              && (get_stat_mtime_ns (&statinfo[0])
+                  < get_stat_mtime_ns (&statinfo[2]))));
+  /* mtime(stamp2) < mtime(stamp3) */
+  ASSERT (statinfo[2].st_mtime < statinfo[3].st_mtime
+          || (statinfo[2].st_mtime == statinfo[3].st_mtime
+              && (get_stat_mtime_ns (&statinfo[2])
+                  < get_stat_mtime_ns (&statinfo[3]))));
+
+  /* Now check the result of the access functions. */
+  /* mtime(stamp1) < mtime(stamp2) */
+  ASSERT (modtimes[0].tv_sec < modtimes[2].tv_sec
+          || (modtimes[0].tv_sec == modtimes[2].tv_sec
+              && modtimes[0].tv_nsec < modtimes[2].tv_nsec));
+  /* mtime(stamp2) < mtime(stamp3) */
+  ASSERT (modtimes[2].tv_sec < modtimes[3].tv_sec
+          || (modtimes[2].tv_sec == modtimes[3].tv_sec
+              && modtimes[2].tv_nsec < modtimes[3].tv_nsec));
+
+  /* verify equivalence */
+  for (i = 0; i < NFILES; ++i)
+    {
+      struct timespec ts;
+      ts = get_stat_mtime (&statinfo[i]);
+      ASSERT (ts.tv_sec == statinfo[i].st_mtime);
+    }
+}
+
+#if defined _WIN32 && !defined __CYGWIN__
+/* Skip the ctime tests on native Windows platforms, because their
+   st_ctime is either the same as st_mtime (plus or minus an offset)
+   or set to the file _creation_ time, and is not influenced by rename
+   or chmod.  */
+# define test_ctime(ignored) ((void) 0)
+#else
+static void
+test_ctime (const struct stat *statinfo)
+{
+  /* On some buggy NFS clients, mtime and ctime are disproportionately
+     skewed from one another.  Skip this test in that case.  */
+  if (statinfo[0].st_mtime != statinfo[0].st_ctime)
+    return;
+
+  /* mtime(stamp2) < ctime(testfile) */
+  ASSERT (statinfo[2].st_mtime < statinfo[1].st_ctime
+          || (statinfo[2].st_mtime == statinfo[1].st_ctime
+              && (get_stat_mtime_ns (&statinfo[2])
+                  < get_stat_ctime_ns (&statinfo[1]))));
+}
+#endif
+
+static void
+test_birthtime (const struct stat *statinfo,
+                const struct timespec *modtimes,
+                struct timespec *birthtimes)
+{
+  int i;
+
+  /* Collect the birth times.  */
+  for (i = 0; i < NFILES; ++i)
+    {
+      birthtimes[i] = get_stat_birthtime (&statinfo[i]);
+      if (birthtimes[i].tv_nsec < 0)
+        return;
+    }
+
+  /* mtime(stamp1) < birthtime(testfile) */
+  ASSERT (modtimes[0].tv_sec < birthtimes[1].tv_sec
+          || (modtimes[0].tv_sec == birthtimes[1].tv_sec
+              && modtimes[0].tv_nsec < birthtimes[1].tv_nsec));
+  /* birthtime(testfile) < mtime(stamp2) */
+  ASSERT (birthtimes[1].tv_sec < modtimes[2].tv_sec
+          || (birthtimes[1].tv_sec == modtimes[2].tv_sec
+              && birthtimes[1].tv_nsec < modtimes[2].tv_nsec));
+}
+
+int
+main (void)
+{
+  struct stat statinfo[NFILES];
+  struct timespec modtimes[NFILES];
+  struct timespec birthtimes[NFILES];
+
+  initialize_filenames ();
+
+#ifdef SIGHUP
+  signal (SIGHUP, cleanup);
+#endif
+#ifdef SIGINT
+  signal (SIGINT, cleanup);
+#endif
+#ifdef SIGQUIT
+  signal (SIGQUIT, cleanup);
+#endif
+#ifdef SIGTERM
+  signal (SIGTERM, cleanup);
+#endif
+
+  cleanup (0);
+  prepare_test (statinfo, modtimes);
+  test_mtime (statinfo, modtimes);
+  test_ctime (statinfo);
+  test_birthtime (statinfo, modtimes, birthtimes);
+
+  cleanup (0);
+  return 0;
+}
diff --git a/gnulib-tests/test-stat.c b/gnulib-tests/test-stat.c
new file mode 100644
index 0000000..59cfca7
--- /dev/null
+++ b/gnulib-tests/test-stat.c
@@ -0,0 +1,56 @@
+/* Tests of stat.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+/* Caution: stat may be a function-like macro.  Although this
+   signature check must pass, it may be the signature of the real (and
+   broken) stat rather than rpl_stat.  Most code should not use the
+   address of stat.  */
+#include "signature.h"
+SIGNATURE_CHECK (stat, int, (char const *, struct stat *));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "same-inode.h"
+#include "macros.h"
+
+#define BASE "test-stat.t"
+
+#include "test-stat.h"
+
+/* Wrapper around stat, which works even if stat is a function-like
+   macro, where test_stat_func(stat) would do the wrong thing.  */
+static int
+do_stat (char const *name, struct stat *st)
+{
+  return stat (name, st);
+}
+
+int
+main (void)
+{
+  return test_stat_func (do_stat, true);
+}
diff --git a/gnulib-tests/test-stat.h b/gnulib-tests/test-stat.h
new file mode 100644
index 0000000..264d739
--- /dev/null
+++ b/gnulib-tests/test-stat.h
@@ -0,0 +1,107 @@
+/* Tests of stat.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+/* This file is designed to test both stat(n,buf) and
+   fstatat(AT_FDCWD,n,buf,0).  FUNC is the function to test.  Assumes
+   that BASE and ASSERT are already defined, and that appropriate
+   headers are already included.  If PRINT, warn before skipping
+   symlink tests with status 77.  */
+
+static int
+test_stat_func (int (*func) (char const *, struct stat *), bool print)
+{
+  struct stat st1;
+  struct stat st2;
+  char *cwd = getcwd (NULL, 0);
+
+  ASSERT (cwd);
+  ASSERT (func (".", &st1) == 0);
+  ASSERT (func ("./", &st2) == 0);
+#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
+  ASSERT (SAME_INODE (st1, st2));
+#endif
+  ASSERT (func (cwd, &st2) == 0);
+#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
+  ASSERT (SAME_INODE (st1, st2));
+#endif
+  ASSERT (func ("/", &st1) == 0);
+  ASSERT (func ("///", &st2) == 0);
+#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
+  ASSERT (SAME_INODE (st1, st2));
+#endif
+
+  errno = 0;
+  ASSERT (func ("", &st1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("nosuch", &st1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("nosuch/", &st1) == -1);
+  ASSERT (errno == ENOENT);
+
+  ASSERT (close (creat (BASE "file", 0600)) == 0);
+  ASSERT (func (BASE "file", &st1) == 0);
+  errno = 0;
+  ASSERT (func (BASE "file/", &st1) == -1);
+  ASSERT (errno == ENOTDIR);
+
+  /* Now for some symlink tests, where supported.  We set up:
+     link1 -> directory
+     link2 -> file
+     link3 -> dangling
+     link4 -> loop
+     then test behavior with trailing slash.
+  */
+  if (symlink (".", BASE "link1") != 0)
+    {
+      ASSERT (unlink (BASE "file") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  ASSERT (symlink (BASE "file", BASE "link2") == 0);
+  ASSERT (symlink (BASE "nosuch", BASE "link3") == 0);
+  ASSERT (symlink (BASE "link4", BASE "link4") == 0);
+
+  ASSERT (func (BASE "link1/", &st1) == 0);
+  ASSERT (S_ISDIR (st1.st_mode));
+
+  errno = 0;
+  ASSERT (func (BASE "link2/", &st1) == -1);
+  ASSERT (errno == ENOTDIR);
+
+  errno = 0;
+  ASSERT (func (BASE "link3/", &st1) == -1);
+  ASSERT (errno == ENOENT);
+
+  errno = 0;
+  ASSERT (func (BASE "link4/", &st1) == -1);
+  ASSERT (errno == ELOOP);
+
+  /* Cleanup.  */
+  ASSERT (unlink (BASE "file") == 0);
+  ASSERT (unlink (BASE "link1") == 0);
+  ASSERT (unlink (BASE "link2") == 0);
+  ASSERT (unlink (BASE "link3") == 0);
+  ASSERT (unlink (BASE "link4") == 0);
+  free (cwd);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-statat.c b/gnulib-tests/test-statat.c
new file mode 100644
index 0000000..ee17de7
--- /dev/null
+++ b/gnulib-tests/test-statat.c
@@ -0,0 +1,27 @@
+/* Tests of statat and lstatat.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "openat.h"
+
+#include "signature.h"
+SIGNATURE_CHECK (statat, int, (int, char const *, struct stat *));
+SIGNATURE_CHECK (lstatat, int, (int, char const *, struct stat *));
+
+#define BASE "test-statat.t"
+#define TEST_STATAT
+#include "test-fstatat.c"
diff --git a/gnulib-tests/test-stdalign.c b/gnulib-tests/test-stdalign.c
new file mode 100644
index 0000000..65e5c6a
--- /dev/null
+++ b/gnulib-tests/test-stdalign.c
@@ -0,0 +1,121 @@
+/* Test of <stdalign.h>.
+   Copyright 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert, inspired by Bruno Haible's test-alignof.c.  */
+
+#include <config.h>
+
+#include <stdalign.h>
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "verify.h"
+
+#include "macros.h"
+
+typedef long double longdouble;
+typedef struct { char a[1]; } struct1;
+typedef struct { char a[2]; } struct2;
+typedef struct { char a[3]; } struct3;
+typedef struct { char a[4]; } struct4;
+
+verify (__alignof_is_defined == 1);
+#ifndef alignof
+# error "alignof is not a macro"
+#endif
+
+#if __alignas_is_defined
+verify (__alignas_is_defined == 1);
+# ifndef alignas
+#  error "alignas is not a macro"
+# endif
+/* mingw can go up only to 8.  8 is all that GNU Emacs needs, so let's
+   limit the test to 8 for now.  */
+# define TEST_ALIGNMENT 8
+#else
+# define _Alignas(alignment)
+# define alignas(alignment)
+# define TEST_ALIGNMENT 1
+#endif
+
+#define CHECK_STATIC(type) \
+  typedef struct { char slot1; type slot2; } type##_helper; \
+  verify (alignof (type) == offsetof (type##_helper, slot2)); \
+  verify (_Alignof (type) == alignof (type)); \
+  const int type##_alignment = alignof (type); \
+  type alignas (TEST_ALIGNMENT) static_##type##_alignas; \
+  type _Alignas (TEST_ALIGNMENT) static_##type##_Alignas
+
+#define CHECK_ALIGNED(var) ASSERT ((uintptr_t) &(var) % TEST_ALIGNMENT == 0)
+
+CHECK_STATIC (char);
+CHECK_STATIC (short);
+CHECK_STATIC (int);
+CHECK_STATIC (long);
+#ifdef INT64_MAX
+CHECK_STATIC (int64_t);
+#endif
+CHECK_STATIC (float);
+CHECK_STATIC (double);
+/* CHECK_STATIC (longdouble); */
+CHECK_STATIC (struct1);
+CHECK_STATIC (struct2);
+CHECK_STATIC (struct3);
+CHECK_STATIC (struct4);
+
+int
+main ()
+{
+#if defined __SUNPRO_C
+  /* Avoid a test failure due to Sun Studio Developer Bug Report #2125432.  */
+  fputs ("Skipping test: known Sun C compiler bug\n", stderr);
+  return 77;
+#elif defined __HP_cc && __ia64
+  /* Avoid a test failure due to HP-UX Itanium cc bug; see:
+     https://lists.gnu.org/r/bug-gnulib/2017-03/msg00078.html  */
+  fputs ("Skipping test: known HP-UX Itanium cc compiler bug\n", stderr);
+  return 77;
+#else
+  CHECK_ALIGNED (static_char_alignas);
+  CHECK_ALIGNED (static_char_Alignas);
+  CHECK_ALIGNED (static_short_alignas);
+  CHECK_ALIGNED (static_short_Alignas);
+  CHECK_ALIGNED (static_int_alignas);
+  CHECK_ALIGNED (static_int_Alignas);
+  CHECK_ALIGNED (static_long_alignas);
+  CHECK_ALIGNED (static_long_Alignas);
+# ifdef INT64_MAX
+  CHECK_ALIGNED (static_int64_t_alignas);
+  CHECK_ALIGNED (static_int64_t_Alignas);
+# endif
+  CHECK_ALIGNED (static_float_alignas);
+  CHECK_ALIGNED (static_float_Alignas);
+  CHECK_ALIGNED (static_double_alignas);
+  CHECK_ALIGNED (static_double_Alignas);
+  /* CHECK_ALIGNED (static_longdouble_alignas); */
+  /* CHECK_ALIGNED (static_longdouble_Alignas); */
+  CHECK_ALIGNED (static_struct1_alignas);
+  CHECK_ALIGNED (static_struct1_Alignas);
+  CHECK_ALIGNED (static_struct2_alignas);
+  CHECK_ALIGNED (static_struct2_Alignas);
+  CHECK_ALIGNED (static_struct3_alignas);
+  CHECK_ALIGNED (static_struct3_Alignas);
+  CHECK_ALIGNED (static_struct4_alignas);
+  CHECK_ALIGNED (static_struct4_Alignas);
+  return 0;
+#endif
+}
diff --git a/gnulib-tests/test-stdbool.c b/gnulib-tests/test-stdbool.c
new file mode 100644
index 0000000..b128b55
--- /dev/null
+++ b/gnulib-tests/test-stdbool.c
@@ -0,0 +1,118 @@
+/* Test of <stdbool.h> substitute.
+   Copyright (C) 2002-2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+/* We want this test to succeed even when using gcc's -Werror; but to
+   do that requires a pragma that didn't exist before 4.3.0.  */
+#ifndef __GNUC__
+# define ADDRESS_CHECK_OKAY
+#elif __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
+/* No way to silence -Waddress.  */
+#else
+# pragma GCC diagnostic ignored "-Waddress"
+# define ADDRESS_CHECK_OKAY
+#endif
+
+#include <config.h>
+
+#include <stdbool.h>
+
+#ifndef bool
+ "error: bool is not defined"
+#endif
+#ifndef false
+ "error: false is not defined"
+#endif
+#if false
+ "error: false is not 0"
+#endif
+#ifndef true
+ "error: true is not defined"
+#endif
+#if true != 1
+ "error: true is not 1"
+#endif
+#ifndef __bool_true_false_are_defined
+ "error: __bool_true_false_are_defined is not defined"
+#endif
+
+/* Several tests cannot be guaranteed with gnulib's <stdbool.h>, at
+   least, not for all compilers and compiler options.  */
+#if HAVE_STDBOOL_H || 3 <= __GNUC__
+struct s { _Bool s: 1; _Bool t; } s;
+#endif
+
+char a[true == 1 ? 1 : -1];
+char b[false == 0 ? 1 : -1];
+char c[__bool_true_false_are_defined == 1 ? 1 : -1];
+#if HAVE_STDBOOL_H || 3 <= __GNUC__ /* See above.  */
+char d[(bool) 0.5 == true ? 1 : -1];
+# ifdef ADDRESS_CHECK_OKAY /* Avoid gcc warning.  */
+/* C99 may plausibly be interpreted as not requiring support for a cast from
+   a variable's address to bool in a static initializer.  So treat it like a
+   GCC extension.  */
+#  ifdef __GNUC__
+bool e = &s;
+#  endif
+# endif
+char f[(_Bool) 0.0 == false ? 1 : -1];
+#endif
+char g[true];
+char h[sizeof (_Bool)];
+#if HAVE_STDBOOL_H || 3 <= __GNUC__ /* See above.  */
+char i[sizeof s.t];
+#endif
+enum { j = false, k = true, l = false * true, m = true * 256 };
+_Bool n[m];
+char o[sizeof n == m * sizeof n[0] ? 1 : -1];
+char p[-1 - (_Bool) 0 < 0 && -1 - (bool) 0 < 0 ? 1 : -1];
+/* Catch a bug in an HP-UX C compiler.  See
+   https://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html
+   https://lists.gnu.org/r/bug-coreutils/2005-11/msg00161.html
+ */
+_Bool q = true;
+_Bool *pq = &q;
+
+int
+main ()
+{
+  int error = 0;
+
+#if HAVE_STDBOOL_H || 3 <= __GNUC__ /* See above.  */
+# ifdef ADDRESS_CHECK_OKAY /* Avoid gcc warning.  */
+  /* A cast from a variable's address to bool is valid in expressions.  */
+  {
+    bool e1 = &s;
+    if (!e1)
+      error = 1;
+  }
+# endif
+#endif
+
+  /* Catch a bug in IBM AIX xlc compiler version 6.0.0.0
+     reported by James Lemley on 2005-10-05; see
+     https://lists.gnu.org/r/bug-coreutils/2005-10/msg00086.html
+     This is a runtime test, since a corresponding compile-time
+     test would rely on initializer extensions.  */
+  {
+    char digs[] = "0123456789";
+    if (&(digs + 5)[-2 + (bool) 1] != &digs[4])
+      error = 1;
+  }
+
+  return error;
+}
diff --git a/gnulib-tests/test-stddef.c b/gnulib-tests/test-stddef.c
new file mode 100644
index 0000000..636c075
--- /dev/null
+++ b/gnulib-tests/test-stddef.c
@@ -0,0 +1,77 @@
+/* Test of <stddef.h> substitute.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <stddef.h>
+#include <limits.h>
+#include <stdalign.h>
+#include "verify.h"
+
+/* Check that appropriate types are defined.  */
+wchar_t a = 'c';
+ptrdiff_t b = 1;
+size_t c = 2;
+max_align_t x;
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+/* Check that offsetof produces integer constants with correct type.  */
+struct d
+{
+  char e;
+  char f;
+};
+/* Solaris 10 has a bug where offsetof is under-parenthesized, and
+   cannot be used as an arbitrary expression.  However, since it is
+   unlikely to bite real code, we ignore that short-coming.  */
+/* verify (sizeof offsetof (struct d, e) == sizeof (size_t)); */
+verify (sizeof (offsetof (struct d, e)) == sizeof (size_t));
+verify (offsetof (struct d, f) == 1);
+
+/* offsetof promotes to an unsigned integer if and only if sizes do
+   not fit in int.  */
+verify ((offsetof (struct d, e) < -1) == (INT_MAX < (size_t) -1));
+
+/* Check max_align_t's alignment.  */
+verify (alignof (double) <= alignof (max_align_t));
+verify (alignof (int) <= alignof (max_align_t));
+verify (alignof (long double) <= alignof (max_align_t));
+verify (alignof (long int) <= alignof (max_align_t));
+verify (alignof (ptrdiff_t) <= alignof (max_align_t));
+verify (alignof (size_t) <= alignof (max_align_t));
+verify (alignof (wchar_t) <= alignof (max_align_t));
+verify (alignof (struct d) <= alignof (max_align_t));
+#if defined __GNUC__ || defined __IBM__ALIGNOF__
+verify (__alignof__ (double) <= __alignof__ (max_align_t));
+verify (__alignof__ (int) <= __alignof__ (max_align_t));
+verify (__alignof__ (long double) <= __alignof__ (max_align_t));
+verify (__alignof__ (long int) <= __alignof__ (max_align_t));
+verify (__alignof__ (ptrdiff_t) <= __alignof__ (max_align_t));
+verify (__alignof__ (size_t) <= __alignof__ (max_align_t));
+verify (__alignof__ (wchar_t) <= __alignof__ (max_align_t));
+verify (__alignof__ (struct d) <= __alignof__ (max_align_t));
+#endif
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-stdint.c b/gnulib-tests/test-stdint.c
new file mode 100644
index 0000000..6da84b2
--- /dev/null
+++ b/gnulib-tests/test-stdint.c
@@ -0,0 +1,428 @@
+/* Test of <stdint.h> substitute.
+   Copyright (C) 2006-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2006.  */
+
+#include <config.h>
+
+/* Whether to enable pedantic checks. */
+#define DO_PEDANTIC 0
+
+#include <stdint.h>
+
+#include "verify.h"
+#include "intprops.h"
+
+#if __GNUC__ >= 2 && DO_PEDANTIC
+# define verify_same_types(expr1,expr2)  \
+    extern void _verify_func(__LINE__) (__typeof__ (expr1) *); \
+    extern void _verify_func(__LINE__) (__typeof__ (expr2) *);
+# define _verify_func(line) _verify_func2(line)
+# define _verify_func2(line) verify_func_ ## line
+#else
+# define verify_same_types(expr1,expr2) extern void verify_func (int)
+#endif
+
+/* 7.18.1.1. Exact-width integer types */
+/* 7.18.2.1. Limits of exact-width integer types */
+
+int8_t a1[3] = { INT8_C (17), INT8_MIN, INT8_MAX };
+verify (TYPE_MINIMUM (int8_t) == INT8_MIN);
+verify (TYPE_MAXIMUM (int8_t) == INT8_MAX);
+verify_same_types (INT8_MIN, (int8_t) 0 + 0);
+verify_same_types (INT8_MAX, (int8_t) 0 + 0);
+
+int16_t a2[3] = { INT16_C (17), INT16_MIN, INT16_MAX };
+verify (TYPE_MINIMUM (int16_t) == INT16_MIN);
+verify (TYPE_MAXIMUM (int16_t) == INT16_MAX);
+verify_same_types (INT16_MIN, (int16_t) 0 + 0);
+verify_same_types (INT16_MAX, (int16_t) 0 + 0);
+
+int32_t a3[3] = { INT32_C (17), INT32_MIN, INT32_MAX };
+verify (TYPE_MINIMUM (int32_t) == INT32_MIN);
+verify (TYPE_MAXIMUM (int32_t) == INT32_MAX);
+verify_same_types (INT32_MIN, (int32_t) 0 + 0);
+verify_same_types (INT32_MAX, (int32_t) 0 + 0);
+
+#ifdef INT64_MAX
+int64_t a4[3] = { INT64_C (17), INT64_MIN, INT64_MAX };
+verify (TYPE_MINIMUM (int64_t) == INT64_MIN);
+verify (TYPE_MAXIMUM (int64_t) == INT64_MAX);
+verify_same_types (INT64_MIN, (int64_t) 0 + 0);
+verify_same_types (INT64_MAX, (int64_t) 0 + 0);
+#endif
+
+uint8_t b1[2] = { UINT8_C (17), UINT8_MAX };
+verify (TYPE_MAXIMUM (uint8_t) == UINT8_MAX);
+verify_same_types (UINT8_MAX, (uint8_t) 0 + 0);
+
+uint16_t b2[2] = { UINT16_C (17), UINT16_MAX };
+verify (TYPE_MAXIMUM (uint16_t) == UINT16_MAX);
+verify_same_types (UINT16_MAX, (uint16_t) 0 + 0);
+
+uint32_t b3[2] = { UINT32_C (17), UINT32_MAX };
+verify (TYPE_MAXIMUM (uint32_t) == UINT32_MAX);
+verify_same_types (UINT32_MAX, (uint32_t) 0 + 0);
+
+#ifdef UINT64_MAX
+uint64_t b4[2] = { UINT64_C (17), UINT64_MAX };
+verify (TYPE_MAXIMUM (uint64_t) == UINT64_MAX);
+verify_same_types (UINT64_MAX, (uint64_t) 0 + 0);
+#endif
+
+#if INT8_MIN && INT8_MAX && INT16_MIN && INT16_MAX && INT32_MIN && INT32_MAX
+/* ok */
+#else
+err or;
+#endif
+
+#if UINT8_MAX && UINT16_MAX && UINT32_MAX
+/* ok */
+#else
+err or;
+#endif
+
+/* 7.18.1.2. Minimum-width integer types */
+/* 7.18.2.2. Limits of minimum-width integer types */
+
+int_least8_t c1[3] = { 17, INT_LEAST8_MIN, INT_LEAST8_MAX };
+verify (TYPE_MINIMUM (int_least8_t) == INT_LEAST8_MIN);
+verify (TYPE_MAXIMUM (int_least8_t) == INT_LEAST8_MAX);
+verify_same_types (INT_LEAST8_MIN, (int_least8_t) 0 + 0);
+verify_same_types (INT_LEAST8_MAX, (int_least8_t) 0 + 0);
+
+int_least16_t c2[3] = { 17, INT_LEAST16_MIN, INT_LEAST16_MAX };
+verify (TYPE_MINIMUM (int_least16_t) == INT_LEAST16_MIN);
+verify (TYPE_MAXIMUM (int_least16_t) == INT_LEAST16_MAX);
+verify_same_types (INT_LEAST16_MIN, (int_least16_t) 0 + 0);
+verify_same_types (INT_LEAST16_MAX, (int_least16_t) 0 + 0);
+
+int_least32_t c3[3] = { 17, INT_LEAST32_MIN, INT_LEAST32_MAX };
+verify (TYPE_MINIMUM (int_least32_t) == INT_LEAST32_MIN);
+verify (TYPE_MAXIMUM (int_least32_t) == INT_LEAST32_MAX);
+verify_same_types (INT_LEAST32_MIN, (int_least32_t) 0 + 0);
+verify_same_types (INT_LEAST32_MAX, (int_least32_t) 0 + 0);
+
+#ifdef INT_LEAST64_MAX
+int_least64_t c4[3] = { 17, INT_LEAST64_MIN, INT_LEAST64_MAX };
+verify (TYPE_MINIMUM (int_least64_t) == INT_LEAST64_MIN);
+verify (TYPE_MAXIMUM (int_least64_t) == INT_LEAST64_MAX);
+verify_same_types (INT_LEAST64_MIN, (int_least64_t) 0 + 0);
+verify_same_types (INT_LEAST64_MAX, (int_least64_t) 0 + 0);
+#endif
+
+uint_least8_t d1[2] = { 17, UINT_LEAST8_MAX };
+verify (TYPE_MAXIMUM (uint_least8_t) == UINT_LEAST8_MAX);
+verify_same_types (UINT_LEAST8_MAX, (uint_least8_t) 0 + 0);
+
+uint_least16_t d2[2] = { 17, UINT_LEAST16_MAX };
+verify (TYPE_MAXIMUM (uint_least16_t) == UINT_LEAST16_MAX);
+verify_same_types (UINT_LEAST16_MAX, (uint_least16_t) 0 + 0);
+
+uint_least32_t d3[2] = { 17, UINT_LEAST32_MAX };
+verify (TYPE_MAXIMUM (uint_least32_t) == UINT_LEAST32_MAX);
+verify_same_types (UINT_LEAST32_MAX, (uint_least32_t) 0 + 0);
+
+#ifdef UINT_LEAST64_MAX
+uint_least64_t d4[2] = { 17, UINT_LEAST64_MAX };
+verify (TYPE_MAXIMUM (uint_least64_t) == UINT_LEAST64_MAX);
+verify_same_types (UINT_LEAST64_MAX, (uint_least64_t) 0 + 0);
+#endif
+
+#if INT_LEAST8_MIN && INT_LEAST8_MAX && INT_LEAST16_MIN && INT_LEAST16_MAX && INT_LEAST32_MIN && INT_LEAST32_MAX
+/* ok */
+#else
+err or;
+#endif
+
+#if UINT_LEAST8_MAX && UINT_LEAST16_MAX && UINT_LEAST32_MAX
+/* ok */
+#else
+err or;
+#endif
+
+/* 7.18.1.3. Fastest minimum-width integer types */
+/* 7.18.2.3. Limits of fastest minimum-width integer types */
+
+int_fast8_t e1[3] = { 17, INT_FAST8_MIN, INT_FAST8_MAX };
+verify (TYPE_MINIMUM (int_fast8_t) == INT_FAST8_MIN);
+verify (TYPE_MAXIMUM (int_fast8_t) == INT_FAST8_MAX);
+verify_same_types (INT_FAST8_MIN, (int_fast8_t) 0 + 0);
+verify_same_types (INT_FAST8_MAX, (int_fast8_t) 0 + 0);
+
+int_fast16_t e2[3] = { 17, INT_FAST16_MIN, INT_FAST16_MAX };
+verify (TYPE_MINIMUM (int_fast16_t) == INT_FAST16_MIN);
+verify (TYPE_MAXIMUM (int_fast16_t) == INT_FAST16_MAX);
+verify_same_types (INT_FAST16_MIN, (int_fast16_t) 0 + 0);
+verify_same_types (INT_FAST16_MAX, (int_fast16_t) 0 + 0);
+
+int_fast32_t e3[3] = { 17, INT_FAST32_MIN, INT_FAST32_MAX };
+verify (TYPE_MINIMUM (int_fast32_t) == INT_FAST32_MIN);
+verify (TYPE_MAXIMUM (int_fast32_t) == INT_FAST32_MAX);
+verify_same_types (INT_FAST32_MIN, (int_fast32_t) 0 + 0);
+verify_same_types (INT_FAST32_MAX, (int_fast32_t) 0 + 0);
+
+#ifdef INT_FAST64_MAX
+int_fast64_t e4[3] = { 17, INT_FAST64_MIN, INT_FAST64_MAX };
+verify (TYPE_MINIMUM (int_fast64_t) == INT_FAST64_MIN);
+verify (TYPE_MAXIMUM (int_fast64_t) == INT_FAST64_MAX);
+verify_same_types (INT_FAST64_MIN, (int_fast64_t) 0 + 0);
+verify_same_types (INT_FAST64_MAX, (int_fast64_t) 0 + 0);
+#endif
+
+uint_fast8_t f1[2] = { 17, UINT_FAST8_MAX };
+verify (TYPE_MAXIMUM (uint_fast8_t) == UINT_FAST8_MAX);
+verify_same_types (UINT_FAST8_MAX, (uint_fast8_t) 0 + 0);
+
+uint_fast16_t f2[2] = { 17, UINT_FAST16_MAX };
+verify (TYPE_MAXIMUM (uint_fast16_t) == UINT_FAST16_MAX);
+verify_same_types (UINT_FAST16_MAX, (uint_fast16_t) 0 + 0);
+
+uint_fast32_t f3[2] = { 17, UINT_FAST32_MAX };
+verify (TYPE_MAXIMUM (uint_fast32_t) == UINT_FAST32_MAX);
+verify_same_types (UINT_FAST32_MAX, (uint_fast32_t) 0 + 0);
+
+#ifdef UINT_FAST64_MAX
+uint_fast64_t f4[2] = { 17, UINT_FAST64_MAX };
+verify (TYPE_MAXIMUM (uint_fast64_t) == UINT_FAST64_MAX);
+verify_same_types (UINT_FAST64_MAX, (uint_fast64_t) 0 + 0);
+#endif
+
+#if INT_FAST8_MIN && INT_FAST8_MAX && INT_FAST16_MIN && INT_FAST16_MAX && INT_FAST32_MIN && INT_FAST32_MAX
+/* ok */
+#else
+err or;
+#endif
+
+#if UINT_FAST8_MAX && UINT_FAST16_MAX && UINT_FAST32_MAX
+/* ok */
+#else
+err or;
+#endif
+
+/* 7.18.1.4. Integer types capable of holding object pointers */
+/* 7.18.2.4. Limits of integer types capable of holding object pointers */
+
+intptr_t g[3] = { 17, INTPTR_MIN, INTPTR_MAX };
+verify (sizeof (void *) <= sizeof (intptr_t));
+verify (TYPE_MINIMUM (intptr_t) == INTPTR_MIN);
+verify (TYPE_MAXIMUM (intptr_t) == INTPTR_MAX);
+verify_same_types (INTPTR_MIN, (intptr_t) 0 + 0);
+verify_same_types (INTPTR_MAX, (intptr_t) 0 + 0);
+
+uintptr_t h[2] = { 17, UINTPTR_MAX };
+verify (sizeof (void *) <= sizeof (uintptr_t));
+verify (TYPE_MAXIMUM (uintptr_t) == UINTPTR_MAX);
+verify_same_types (UINTPTR_MAX, (uintptr_t) 0 + 0);
+
+#if INTPTR_MIN && INTPTR_MAX && UINTPTR_MAX
+/* ok */
+#else
+err or;
+#endif
+
+/* 7.18.1.5. Greatest-width integer types */
+/* 7.18.2.5. Limits of greatest-width integer types */
+
+intmax_t i[3] = { INTMAX_C (17), INTMAX_MIN, INTMAX_MAX };
+verify (TYPE_MINIMUM (intmax_t) == INTMAX_MIN);
+verify (TYPE_MAXIMUM (intmax_t) == INTMAX_MAX);
+verify_same_types (INTMAX_MIN, (intmax_t) 0 + 0);
+verify_same_types (INTMAX_MAX, (intmax_t) 0 + 0);
+
+uintmax_t j[2] = { UINTMAX_C (17), UINTMAX_MAX };
+verify (TYPE_MAXIMUM (uintmax_t) == UINTMAX_MAX);
+verify_same_types (UINTMAX_MAX, (uintmax_t) 0 + 0);
+
+/* As of 2007, Sun C and HP-UX 10.20 cc don't support 'long long' constants in
+   the preprocessor.  */
+#if !(defined __SUNPRO_C || (defined __hpux && !defined __GNUC__))
+#if INTMAX_MIN && INTMAX_MAX && UINTMAX_MAX
+/* ok */
+#else
+err or;
+#endif
+#endif
+
+/* 7.18.3. Limits of other integer types */
+
+#include <stddef.h>
+
+verify (TYPE_MINIMUM (ptrdiff_t) == PTRDIFF_MIN);
+verify (TYPE_MAXIMUM (ptrdiff_t) == PTRDIFF_MAX);
+verify_same_types (PTRDIFF_MIN, (ptrdiff_t) 0 + 0);
+verify_same_types (PTRDIFF_MAX, (ptrdiff_t) 0 + 0);
+
+#if PTRDIFF_MIN && PTRDIFF_MAX
+/* ok */
+#else
+err or;
+#endif
+
+#include <signal.h>
+
+verify (TYPE_MINIMUM (sig_atomic_t) == SIG_ATOMIC_MIN);
+verify (TYPE_MAXIMUM (sig_atomic_t) == SIG_ATOMIC_MAX);
+verify_same_types (SIG_ATOMIC_MIN, (sig_atomic_t) 0 + 0);
+verify_same_types (SIG_ATOMIC_MAX, (sig_atomic_t) 0 + 0);
+
+#if SIG_ATOMIC_MIN != 17 && SIG_ATOMIC_MAX
+/* ok */
+#else
+err or;
+#endif
+
+verify (TYPE_MAXIMUM (size_t) == SIZE_MAX);
+verify_same_types (SIZE_MAX, (size_t) 0 + 0);
+
+#if SIZE_MAX
+/* ok */
+#else
+err or;
+#endif
+
+#if HAVE_WCHAR_T
+verify (TYPE_MINIMUM (wchar_t) == WCHAR_MIN);
+verify (TYPE_MAXIMUM (wchar_t) == WCHAR_MAX);
+verify_same_types (WCHAR_MIN, (wchar_t) 0 + 0);
+verify_same_types (WCHAR_MAX, (wchar_t) 0 + 0);
+
+# if WCHAR_MIN != 17 && WCHAR_MAX
+/* ok */
+# else
+err or;
+# endif
+#endif
+
+#if HAVE_WINT_T
+# include <wchar.h>
+
+verify (TYPE_MINIMUM (wint_t) == WINT_MIN);
+verify (TYPE_MAXIMUM (wint_t) == WINT_MAX);
+verify_same_types (WINT_MIN, (wint_t) 0 + 0);
+verify_same_types (WINT_MAX, (wint_t) 0 + 0);
+
+# if WINT_MIN != 17 && WINT_MAX
+/* ok */
+# else
+err or;
+# endif
+#endif
+
+/* 7.18.4. Macros for integer constants */
+
+verify (INT8_C (17) == 17);
+verify_same_types (INT8_C (17), (int_least8_t)0 + 0);
+verify (UINT8_C (17) == 17);
+verify_same_types (UINT8_C (17), (uint_least8_t)0 + 0);
+
+verify (INT16_C (17) == 17);
+verify_same_types (INT16_C (17), (int_least16_t)0 + 0);
+verify (UINT16_C (17) == 17);
+verify_same_types (UINT16_C (17), (uint_least16_t)0 + 0);
+
+verify (INT32_C (17) == 17);
+verify_same_types (INT32_C (17), (int_least32_t)0 + 0);
+verify (UINT32_C (17) == 17);
+verify_same_types (UINT32_C (17), (uint_least32_t)0 + 0);
+
+#ifdef INT64_C
+verify (INT64_C (17) == 17);
+verify_same_types (INT64_C (17), (int_least64_t)0 + 0);
+#endif
+#ifdef UINT64_C
+verify (UINT64_C (17) == 17);
+verify_same_types (UINT64_C (17), (uint_least64_t)0 + 0);
+#endif
+
+verify (INTMAX_C (17) == 17);
+verify_same_types (INTMAX_C (17), (intmax_t)0 + 0);
+verify (UINTMAX_C (17) == 17);
+verify_same_types (UINTMAX_C (17), (uintmax_t)0 + 0);
+
+/* Use _GL_VERIFY (with a fixed-length diagnostic string) rather than verify,
+   because the latter would require forming each stringified expression, and
+   many of these would be so long as to trigger a warning/error like this:
+
+   test-stdint.c:407:1: error: string length '6980' is greater than the \
+     length '4095' ISO C99 compilers are required to support \
+     [-Werror=overlength-strings]
+  */
+#define verify_width(width, min, max) \
+  _GL_VERIFY ((max) >> ((width) - 1 - ((min) < 0)) == 1, \
+              "verify_width check")
+
+/* Macros specified by ISO/IEC TS 18661-1:2014.  */
+
+#ifdef INT8_MAX
+verify_width (INT8_WIDTH, INT8_MIN, INT8_MAX);
+#endif
+#ifdef UINT8_MAX
+verify_width (UINT8_WIDTH, 0, UINT8_MAX);
+#endif
+#ifdef INT16_MAX
+verify_width (INT16_WIDTH, INT16_MIN, INT16_MAX);
+#endif
+#ifdef UINT16_MAX
+verify_width (UINT16_WIDTH, 0, UINT16_MAX);
+#endif
+#ifdef INT32_MAX
+verify_width (INT32_WIDTH, INT32_MIN, INT32_MAX);
+#endif
+#ifdef UINT32_MAX
+verify_width (UINT32_WIDTH, 0, UINT32_MAX);
+#endif
+#ifdef INT64_MAX
+verify_width (INT64_WIDTH, INT64_MIN, INT64_MAX);
+#endif
+#ifdef UINT64_MAX
+verify_width (UINT64_WIDTH, 0, UINT64_MAX);
+#endif
+verify_width (INT_LEAST8_WIDTH, INT_LEAST8_MIN, INT_LEAST8_MAX);
+verify_width (UINT_LEAST8_WIDTH, 0, UINT_LEAST8_MAX);
+verify_width (INT_LEAST16_WIDTH, INT_LEAST16_MIN, INT_LEAST16_MAX);
+verify_width (UINT_LEAST16_WIDTH, 0, UINT_LEAST16_MAX);
+verify_width (INT_LEAST32_WIDTH, INT_LEAST32_MIN, INT_LEAST32_MAX);
+verify_width (UINT_LEAST32_WIDTH, 0, UINT_LEAST32_MAX);
+verify_width (INT_LEAST64_WIDTH, INT_LEAST64_MIN, INT_LEAST64_MAX);
+verify_width (UINT_LEAST64_WIDTH, 0, UINT_LEAST64_MAX);
+verify_width (INT_FAST8_WIDTH, INT_FAST8_MIN, INT_FAST8_MAX);
+verify_width (UINT_FAST8_WIDTH, 0, UINT_FAST8_MAX);
+verify_width (INT_FAST16_WIDTH, INT_FAST16_MIN, INT_FAST16_MAX);
+verify_width (UINT_FAST16_WIDTH, 0, UINT_FAST16_MAX);
+verify_width (INT_FAST32_WIDTH, INT_FAST32_MIN, INT_FAST32_MAX);
+verify_width (UINT_FAST32_WIDTH, 0, UINT_FAST32_MAX);
+verify_width (INT_FAST64_WIDTH, INT_FAST64_MIN, INT_FAST64_MAX);
+verify_width (UINT_FAST64_WIDTH, 0, UINT_FAST64_MAX);
+verify_width (INTPTR_WIDTH, INTPTR_MIN, INTPTR_MAX);
+verify_width (UINTPTR_WIDTH, 0, UINTPTR_MAX);
+verify_width (INTMAX_WIDTH, INTMAX_MIN, INTMAX_MAX);
+verify_width (UINTMAX_WIDTH, 0, UINTMAX_MAX);
+verify_width (PTRDIFF_WIDTH, PTRDIFF_MIN, PTRDIFF_MAX);
+verify_width (SIZE_WIDTH, 0, SIZE_MAX);
+verify_width (WCHAR_WIDTH, WCHAR_MIN, WCHAR_MAX);
+#ifdef WINT_MAX
+verify_width (WINT_WIDTH, WINT_MIN, WINT_MAX);
+#endif
+#ifdef SIG_ATOMIC_MAX
+verify_width (SIG_ATOMIC_WIDTH, SIG_ATOMIC_MIN, SIG_ATOMIC_MAX);
+#endif
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-stdio.c b/gnulib-tests/test-stdio.c
new file mode 100644
index 0000000..55a34db
--- /dev/null
+++ b/gnulib-tests/test-stdio.c
@@ -0,0 +1,43 @@
+/* Test of <stdio.h> substitute.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "verify.h"
+
+/* Check that the various SEEK_* macros are defined.  */
+int sk[] = { SEEK_CUR, SEEK_END, SEEK_SET };
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+/* Check that the types are all defined.  */
+fpos_t t1;
+off_t t2;
+size_t t3;
+ssize_t t4;
+va_list t5;
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-stdlib.c b/gnulib-tests/test-stdlib.c
new file mode 100644
index 0000000..1314d77
--- /dev/null
+++ b/gnulib-tests/test-stdlib.c
@@ -0,0 +1,54 @@
+/* Test of <stdlib.h> substitute.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "verify.h"
+
+/* Check that EXIT_SUCCESS is 0, per POSIX.  */
+static int exitcode = EXIT_SUCCESS;
+#if EXIT_SUCCESS
+"oops"
+#endif
+
+/* Check for GNU value (not guaranteed by POSIX, but is guaranteed by
+   gnulib).  */
+#if EXIT_FAILURE != 1
+"oops"
+#endif
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+#if GNULIB_TEST_SYSTEM_POSIX
+# include "test-sys_wait.h"
+#else
+# define test_sys_wait_macros() 0
+#endif
+
+int
+main (void)
+{
+  if (test_sys_wait_macros ())
+    return 1;
+
+  return exitcode;
+}
diff --git a/gnulib-tests/test-strerror.c b/gnulib-tests/test-strerror.c
new file mode 100644
index 0000000..16afe00
--- /dev/null
+++ b/gnulib-tests/test-strerror.c
@@ -0,0 +1,75 @@
+/* Test of strerror() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2007.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (strerror, char *, (int));
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  char *str;
+
+  errno = 0;
+  str = strerror (EACCES);
+  ASSERT (str);
+  ASSERT (*str);
+  ASSERT (errno == 0);
+
+  errno = 0;
+  str = strerror (ETIMEDOUT);
+  ASSERT (str);
+  ASSERT (*str);
+  ASSERT (errno == 0);
+
+  errno = 0;
+  str = strerror (EOVERFLOW);
+  ASSERT (str);
+  ASSERT (*str);
+  ASSERT (errno == 0);
+
+  /* POSIX requires strerror (0) to succeed.  Reject use of "Unknown
+     error", but allow "Success", "No error", or even Solaris' "Error
+     0" which are distinct patterns from true out-of-range strings.
+     http://austingroupbugs.net/view.php?id=382  */
+  errno = 0;
+  str = strerror (0);
+  ASSERT (str);
+  ASSERT (*str);
+  ASSERT (errno == 0);
+  ASSERT (strstr (str, "nknown") == NULL);
+  ASSERT (strstr (str, "ndefined") == NULL);
+
+  /* POSIX requires strerror to produce a non-NULL result for all
+     inputs; as an extension, we also guarantee a non-empty result.
+     Reporting EINVAL is optional.  */
+  errno = 0;
+  str = strerror (-3);
+  ASSERT (str);
+  ASSERT (*str);
+  ASSERT (errno == 0 || errno == EINVAL);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-strerror_r.c b/gnulib-tests/test-strerror_r.c
new file mode 100644
index 0000000..b11d6fd
--- /dev/null
+++ b/gnulib-tests/test-strerror_r.c
@@ -0,0 +1,181 @@
+/* Test of strerror_r() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (strerror_r, int, (int, char *, size_t));
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  char buf[100];
+  int ret;
+
+  /* Test results with valid errnum and enough room.  */
+
+  errno = 0;
+  buf[0] = '\0';
+  ASSERT (strerror_r (EACCES, buf, sizeof buf) == 0);
+  ASSERT (buf[0] != '\0');
+  ASSERT (errno == 0);
+  ASSERT (strlen (buf) < sizeof buf);
+
+  errno = 0;
+  buf[0] = '\0';
+  ASSERT (strerror_r (ETIMEDOUT, buf, sizeof buf) == 0);
+  ASSERT (buf[0] != '\0');
+  ASSERT (errno == 0);
+  ASSERT (strlen (buf) < sizeof buf);
+
+  errno = 0;
+  buf[0] = '\0';
+  ASSERT (strerror_r (EOVERFLOW, buf, sizeof buf) == 0);
+  ASSERT (buf[0] != '\0');
+  ASSERT (errno == 0);
+  ASSERT (strlen (buf) < sizeof buf);
+
+  /* POSIX requires strerror (0) to succeed.  Reject use of "Unknown
+     error", but allow "Success", "No error", or even Solaris' "Error
+     0" which are distinct patterns from true out-of-range strings.
+     http://austingroupbugs.net/view.php?id=382  */
+  errno = 0;
+  buf[0] = '\0';
+  ret = strerror_r (0, buf, sizeof buf);
+  ASSERT (ret == 0);
+  ASSERT (buf[0]);
+  ASSERT (errno == 0);
+  ASSERT (strstr (buf, "nknown") == NULL);
+  ASSERT (strstr (buf, "ndefined") == NULL);
+
+  /* Test results with out-of-range errnum and enough room.  POSIX
+     allows an empty string on success, and allows an unchanged buf on
+     error, but these are not useful, so we guarantee contents.  */
+  errno = 0;
+  buf[0] = '^';
+  ret = strerror_r (-3, buf, sizeof buf);
+  ASSERT (ret == 0 || ret == EINVAL);
+  ASSERT (buf[0] != '^');
+  ASSERT (*buf);
+  ASSERT (errno == 0);
+  ASSERT (strlen (buf) < sizeof buf);
+
+  /* Test results with a too small buffer.  POSIX requires an error;
+     only ERANGE for 0 and valid errors, and a choice of ERANGE or
+     EINVAL for out-of-range values.  On error, POSIX permits buf to
+     be empty, unchanged, or unterminated, but these are not useful,
+     so we guarantee NUL-terminated truncated contents for all but
+     size 0.  http://austingroupbugs.net/view.php?id=398.  Also ensure
+     that no out-of-bounds writes occur.  */
+  {
+    int errs[] = { EACCES, 0, -3, };
+    int j;
+
+    buf[sizeof buf - 1] = '\0';
+    for (j = 0; j < SIZEOF (errs); j++)
+      {
+        int err = errs[j];
+        char buf2[sizeof buf] = "";
+        size_t len;
+        size_t i;
+
+        strerror_r (err, buf2, sizeof buf2);
+        len = strlen (buf2);
+        ASSERT (len < sizeof buf);
+
+        for (i = 0; i <= len; i++)
+          {
+            memset (buf, '^', sizeof buf - 1);
+            errno = 0;
+            ret = strerror_r (err, buf, i);
+            ASSERT (errno == 0);
+            if (j == 2)
+              ASSERT (ret == ERANGE || ret == EINVAL);
+            else
+              ASSERT (ret == ERANGE);
+            if (i)
+              {
+                ASSERT (strncmp (buf, buf2, i - 1) == 0);
+                ASSERT (buf[i - 1] == '\0');
+              }
+            ASSERT (strspn (buf + i, "^") == sizeof buf - 1 - i);
+          }
+
+        strcpy (buf, "BADFACE");
+        errno = 0;
+        ret = strerror_r (err, buf, len + 1);
+        ASSERT (ret != ERANGE);
+        ASSERT (errno == 0);
+        ASSERT (strcmp (buf, buf2) == 0);
+      }
+  }
+
+#if GNULIB_STRERROR
+  /* Test that strerror_r does not clobber strerror buffer.  On some
+     platforms, this test can only succeed if gnulib also replaces
+     strerror.  */
+  {
+    const char *msg1;
+    const char *msg2;
+    const char *msg3;
+    const char *msg4;
+    char *str1;
+    char *str2;
+    char *str3;
+    char *str4;
+
+    msg1 = strerror (ENOENT);
+    ASSERT (msg1);
+    str1 = strdup (msg1);
+    ASSERT (str1);
+
+    msg2 = strerror (ERANGE);
+    ASSERT (msg2);
+    str2 = strdup (msg2);
+    ASSERT (str2);
+
+    msg3 = strerror (-4);
+    ASSERT (msg3);
+    str3 = strdup (msg3);
+    ASSERT (str3);
+
+    msg4 = strerror (1729576);
+    ASSERT (msg4);
+    str4 = strdup (msg4);
+    ASSERT (str4);
+
+    strerror_r (EACCES, buf, sizeof buf);
+    strerror_r (-5, buf, sizeof buf);
+    ASSERT (msg1 == msg2 || msg1 == msg4 || STREQ (msg1, str1));
+    ASSERT (msg2 == msg4 || STREQ (msg2, str2));
+    ASSERT (msg3 == msg4 || STREQ (msg3, str3));
+    ASSERT (STREQ (msg4, str4));
+
+    free (str1);
+    free (str2);
+    free (str3);
+    free (str4);
+  }
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-striconv.c b/gnulib-tests/test-striconv.c
new file mode 100644
index 0000000..683b037
--- /dev/null
+++ b/gnulib-tests/test-striconv.c
@@ -0,0 +1,180 @@
+/* Test of character set conversion.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "striconv.h"
+
+#if HAVE_ICONV
+# include <iconv.h>
+#endif
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+#if HAVE_ICONV
+  /* Assume that iconv() supports at least the encodings ASCII, ISO-8859-1,
+     and UTF-8.  */
+  iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1");
+  iconv_t cd_utf8_to_88591 = iconv_open ("ISO-8859-1", "UTF-8");
+
+  ASSERT (cd_88591_to_utf8 != (iconv_t)(-1));
+  ASSERT (cd_utf8_to_88591 != (iconv_t)(-1));
+
+  /* ------------------------- Test mem_cd_iconv() ------------------------- */
+
+  /* Test conversion from ISO-8859-1 to UTF-8 with no errors.  */
+  {
+    static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    static const char expected[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    char *result = NULL;
+    size_t length = 0;
+    int retval = mem_cd_iconv (input, strlen (input), cd_88591_to_utf8,
+                               &result, &length);
+    ASSERT (retval == 0);
+    ASSERT (length == strlen (expected));
+    ASSERT (result != NULL && memcmp (result, expected, strlen (expected)) == 0);
+    free (result);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with no errors.  */
+  {
+    static const char input[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    static const char expected[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    char *result = NULL;
+    size_t length = 0;
+    int retval = mem_cd_iconv (input, strlen (input), cd_utf8_to_88591,
+                               &result, &length);
+    ASSERT (retval == 0);
+    ASSERT (length == strlen (expected));
+    ASSERT (result != NULL && memcmp (result, expected, strlen (expected)) == 0);
+    free (result);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EILSEQ.  */
+  {
+    static const char input[] = "\342\202\254"; /* EURO SIGN */
+    char *result = NULL;
+    size_t length = 0;
+    int retval = mem_cd_iconv (input, strlen (input), cd_utf8_to_88591,
+                               &result, &length);
+    ASSERT (retval == -1 && errno == EILSEQ);
+    ASSERT (result == NULL);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EINVAL.  */
+  {
+    static const char input[] = "\342";
+    char *result = NULL;
+    size_t length = 0;
+    int retval = mem_cd_iconv (input, strlen (input), cd_utf8_to_88591,
+                               &result, &length);
+    ASSERT (retval == 0);
+    ASSERT (length == 0);
+    free (result);
+  }
+
+  /* ------------------------- Test str_cd_iconv() ------------------------- */
+
+  /* Test conversion from ISO-8859-1 to UTF-8 with no errors.  */
+  {
+    static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    static const char expected[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    char *result = str_cd_iconv (input, cd_88591_to_utf8);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, expected) == 0);
+    free (result);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with no errors.  */
+  {
+    static const char input[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    static const char expected[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    char *result = str_cd_iconv (input, cd_utf8_to_88591);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, expected) == 0);
+    free (result);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EILSEQ.  */
+  {
+    static const char input[] = "Costs: 27 \342\202\254"; /* EURO SIGN */
+    char *result = str_cd_iconv (input, cd_utf8_to_88591);
+    ASSERT (result == NULL && errno == EILSEQ);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EINVAL.  */
+  {
+    static const char input[] = "\342";
+    char *result = str_cd_iconv (input, cd_utf8_to_88591);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "") == 0);
+    free (result);
+  }
+
+  iconv_close (cd_88591_to_utf8);
+  iconv_close (cd_utf8_to_88591);
+
+  /* -------------------------- Test str_iconv() -------------------------- */
+
+  /* Test conversion from ISO-8859-1 to UTF-8 with no errors.  */
+  {
+    static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    static const char expected[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    char *result = str_iconv (input, "ISO-8859-1", "UTF-8");
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, expected) == 0);
+    free (result);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with no errors.  */
+  {
+    static const char input[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    static const char expected[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    char *result = str_iconv (input, "UTF-8", "ISO-8859-1");
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, expected) == 0);
+    free (result);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EILSEQ.  */
+  {
+    static const char input[] = "Costs: 27 \342\202\254"; /* EURO SIGN */
+    char *result = str_iconv (input, "UTF-8", "ISO-8859-1");
+    ASSERT (result == NULL && errno == EILSEQ);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EINVAL.  */
+  {
+    static const char input[] = "\342";
+    char *result = str_iconv (input, "UTF-8", "ISO-8859-1");
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "") == 0);
+    free (result);
+  }
+
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-string.c b/gnulib-tests/test-string.c
new file mode 100644
index 0000000..2151f7a
--- /dev/null
+++ b/gnulib-tests/test-string.c
@@ -0,0 +1,33 @@
+/* Test of <string.h> substitute.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "verify.h"
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-strncat.c b/gnulib-tests/test-strncat.c
new file mode 100644
index 0000000..d36fe07
--- /dev/null
+++ b/gnulib-tests/test-strncat.c
@@ -0,0 +1,62 @@
+/* Test of strncat() function.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (strncat, char *, (char *, const char *, size_t));
+
+#include <stdlib.h>
+
+#include "zerosize-ptr.h"
+#include "macros.h"
+
+#define UNIT char
+#define U_STRNCAT strncat
+#define MAGIC ((char) 0xBA)
+#include "unistr/test-strncat.h"
+
+int
+main ()
+{
+  /* Simple string.  */
+  { /* "Grüß Gott. Здравствуйте! x=(-b±sqrt(b²-4ac))/(2a)  日本語,中文,한글"
+       in UTF-8 encoding.  */
+    static const char input[] =
+      { 'G', 'r', (char) 0xC3, (char) 0xBC, (char) 0xC3, (char) 0x9F, ' ',
+        'G', 'o', 't', 't', '.', ' ', (char) 0xD0, (char) 0x97, (char) 0xD0,
+        (char) 0xB4, (char) 0xD1, (char) 0x80, (char) 0xD0, (char) 0xB0,
+        (char) 0xD0, (char) 0xB2, (char) 0xD1, (char) 0x81, (char) 0xD1,
+        (char) 0x82, (char) 0xD0, (char) 0xB2, (char) 0xD1, (char) 0x83,
+        (char) 0xD0, (char) 0xB9, (char) 0xD1, (char) 0x82, (char) 0xD0,
+        (char) 0xB5, '!', ' ', 'x', '=', '(', '-', 'b', (char) 0xC2,
+        (char) 0xB1, 's', 'q', 'r', 't', '(', 'b', (char) 0xC2, (char) 0xB2,
+        '-', '4', 'a', 'c', ')', ')', '/', '(', '2', 'a', ')', ' ', ' ',
+        (char) 0xE6, (char) 0x97, (char) 0xA5, (char) 0xE6, (char) 0x9C,
+        (char) 0xAC, (char) 0xE8, (char) 0xAA, (char) 0x9E, ',', (char) 0xE4,
+        (char) 0xB8, (char) 0xAD, (char) 0xE6, (char) 0x96, (char) 0x87, ',',
+        (char) 0xED, (char) 0x95, (char) 0x9C, (char) 0xEA, (char) 0xB8,
+        (char) 0x80, '\0'
+      };
+    check (input, SIZEOF (input));
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-strnlen.c b/gnulib-tests/test-strnlen.c
new file mode 100644
index 0000000..662903b
--- /dev/null
+++ b/gnulib-tests/test-strnlen.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2010-2020 Free Software Foundation, Inc.
+ * Written by Eric Blake
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (strnlen, size_t, (char const *, size_t));
+
+#include <stdlib.h>
+
+#include "zerosize-ptr.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  size_t i;
+  char *page_boundary = (char *) zerosize_ptr ();
+  if (!page_boundary)
+    {
+      page_boundary = malloc (0x1000);
+      ASSERT (page_boundary);
+      page_boundary += 0x1000;
+    }
+
+  /* Basic behavior tests.  */
+  ASSERT (strnlen ("a", 0) == 0);
+  ASSERT (strnlen ("a", 1) == 1);
+  ASSERT (strnlen ("a", 2) == 1);
+  ASSERT (strnlen ("", 0x100000) == 0);
+
+  /* Memory fence and alignment testing.  */
+  for (i = 0; i < 512; i++)
+    {
+      char *start = page_boundary - i;
+      size_t j = i;
+      memset (start, 'x', i);
+      do
+        {
+          if (i != j)
+            {
+              start[j] = 0;
+              ASSERT (strnlen (start, i + j) == j);
+            }
+          ASSERT (strnlen (start, i) == j);
+          ASSERT (strnlen (start, j) == j);
+        }
+      while (j--);
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-strsignal.c b/gnulib-tests/test-strsignal.c
new file mode 100644
index 0000000..0316d40
--- /dev/null
+++ b/gnulib-tests/test-strsignal.c
@@ -0,0 +1,77 @@
+/* Test of strsignal() function.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Colin Watson <cjwatson@debian.org>, 2008.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (strsignal, char *, (int));
+
+#include <signal.h>
+
+#include "macros.h"
+
+#if HAVE_DECL_SYS_SIGLIST
+# define ASSERT_DESCRIPTION(got, expect)
+#else
+/* In this case, we can guarantee some signal descriptions.  */
+# define ASSERT_DESCRIPTION(got, expect) ASSERT (!strcmp (got, expect))
+#endif
+
+int
+main (void)
+{
+  /* Work around bug in cygwin 1.5.25 <string.h> by declaring str as
+     const char *, even though strsignal is supposed to return char *.
+     At any rate, this doesn't hurt, since POSIX 200x states that "The
+     string pointed to shall not be modified by the application."  */
+  const char *str;
+
+  /* We try a couple of signals, since not all signals are supported
+     everywhere.  Notwithstanding the #ifdef for neatness, SIGINT should in
+     fact be available on all platforms.  */
+
+#ifdef SIGHUP
+  str = strsignal (SIGHUP);
+  ASSERT (str);
+  ASSERT (*str);
+  ASSERT_DESCRIPTION (str, "Hangup");
+#endif
+
+#ifdef SIGINT
+  str = strsignal (SIGINT);
+  ASSERT (str);
+  ASSERT (*str);
+  ASSERT_DESCRIPTION (str, "Interrupt");
+#endif
+
+  /* Test that for out-of-range signal numbers the result is usable.  */
+
+  str = strsignal (-1);
+  ASSERT (str);
+  ASSERT (str != (char *) -1);
+  ASSERT (strlen (str));
+
+  str = strsignal (9249234);
+  ASSERT (str);
+  ASSERT (str != (char *) -1);
+  ASSERT (strlen (str));
+
+  return 0;
+}
diff --git a/gnulib-tests/test-strtod.c b/gnulib-tests/test-strtod.c
new file mode 100644
index 0000000..c6b878c
--- /dev/null
+++ b/gnulib-tests/test-strtod.c
@@ -0,0 +1,980 @@
+/*
+ * Copyright (C) 2008-2020 Free Software Foundation, Inc.
+ * Written by Eric Blake
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (strtod, double, (char const *, char **));
+
+#include <errno.h>
+#include <float.h>
+#include <math.h>
+#include <string.h>
+
+#include "isnand-nolibm.h"
+#include "minus-zero.h"
+#include "macros.h"
+
+/* Avoid requiring -lm just for fabs.  */
+#define FABS(d) ((d) < 0.0 ? -(d) : (d))
+
+int
+main (void)
+{
+  int status = 0;
+  /* Subject sequence empty or invalid.  */
+  {
+    const char input[] = "";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " ";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " +";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " .";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " .e0";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);              /* IRIX 6.5, OSF/1 5.1 */
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " +.e-0";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);              /* IRIX 6.5, OSF/1 5.1 */
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " in";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " na";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+
+  /* Simple floating point values.  */
+  {
+    const char input[] = "1";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1.";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = ".5";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.5);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = " 1";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+1";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-1";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == -1.0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1e0";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1e+0";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 4);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1e-0";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 4);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1e1";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 10.0);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "5e-1";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.5);
+    ASSERT (ptr == input + 4);
+    ASSERT (errno == 0);
+  }
+
+  /* Zero.  */
+  {
+    const char input[] = "0";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = ".0";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0e0";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0e+9999999";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0e-9999999";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-0";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!!signbit (result) == !!signbit (minus_zerod)); /* IRIX 6.5, OSF/1 4.0 */
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+
+  /* Suffixes.  */
+  {
+    const char input[] = "1f";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1.f";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1e";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1e+";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1e-";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1E 2";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);             /* HP-UX 11.11, IRIX 6.5, OSF/1 4.0 */
+    ASSERT (ptr == input + 1);          /* HP-UX 11.11, IRIX 6.5 */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.6, Mac OS X 10.3, FreeBSD 6.2, AIX 7.1 */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "00x1";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-0x";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!!signbit (result) == !!signbit (minus_zerod)); /* Mac OS X 10.3, FreeBSD 6.2, IRIX 6.5, OSF/1 4.0 */
+    ASSERT (ptr == input + 2);          /* glibc-2.3.6, Mac OS X 10.3, FreeBSD 6.2, AIX 7.1 */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0xg";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.6, Mac OS X 10.3, FreeBSD 6.2, AIX 7.1 */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0xp";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.6, Mac OS X 10.3, FreeBSD 6.2, AIX 7.1 */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0XP";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.6, Mac OS X 10.3, FreeBSD 6.2, AIX 7.1 */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x.";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.6, Mac OS X 10.3, FreeBSD 6.2, AIX 7.1 */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0xp+";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.6, Mac OS X 10.3, FreeBSD 6.2, AIX 7.1 */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0xp+1";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.6, Mac OS X 10.3, FreeBSD 6.2, AIX 7.1 */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x.p+1";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.6, Mac OS X 10.3, FreeBSD 6.2, AIX 7.1 */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1p+1";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1P+1";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+
+  /* Overflow/underflow.  */
+  {
+    const char input[] = "1E1000000";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == HUGE_VAL);
+    ASSERT (ptr == input + 9);          /* OSF/1 5.1 */
+    ASSERT (errno == ERANGE);
+  }
+  {
+    const char input[] = "-1E1000000";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == -HUGE_VAL);
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == ERANGE);
+  }
+  {
+    const char input[] = "1E-100000";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (0.0 <= result && result <= DBL_MIN);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 9);
+    ASSERT (errno == ERANGE);
+  }
+  {
+    const char input[] = "-1E-100000";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (-DBL_MIN <= result && result <= 0.0);
+#if 0
+    /* FIXME - this is glibc bug 5995; POSIX allows returning positive
+       0 on negative underflow, even though quality of implementation
+       demands preserving the sign.  Disable this test until fixed
+       glibc is more prevalent.  */
+    ASSERT (!!signbit (result) == !!signbit (minus_zerod)); /* glibc-2.3.6, mingw */
+#endif
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == ERANGE);
+  }
+  {
+    const char input[] = "1E 1000000";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);             /* HP-UX 11.11, IRIX 6.5, OSF/1 4.0 */
+    ASSERT (ptr == input + 1);          /* HP-UX 11.11, IRIX 6.5 */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x1P 1000000";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);             /* NetBSD 3.0, OpenBSD 4.0, AIX 7.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (ptr == input + 3);          /* NetBSD 3.0, OpenBSD 4.0, AIX 7.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (errno == 0);
+  }
+
+  /* Infinity.  */
+  {
+    const char input[] = "iNf";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == HUGE_VAL);        /* OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (ptr == input + 3);          /* OpenBSD 4.0, HP-UX 11.00, IRIX 6.5, OSF/1 5.1, Solaris 9, mingw */
+    ASSERT (errno == 0);                /* HP-UX 11.11, OSF/1 4.0 */
+  }
+  {
+    const char input[] = "-InF";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == -HUGE_VAL);       /* OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (ptr == input + 4);          /* OpenBSD 4.0, HP-UX 11.00, IRIX 6.5, OSF/1 4.0, Solaris 9, mingw */
+    ASSERT (errno == 0);                /* HP-UX 11.11, OSF/1 4.0 */
+  }
+  {
+    const char input[] = "infinite";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == HUGE_VAL);        /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (ptr == input + 3);          /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (errno == 0);                /* OSF/1 4.0 */
+  }
+  {
+    const char input[] = "infinitY";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == HUGE_VAL);        /* OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (ptr == input + 8);          /* OpenBSD 4.0, HP-UX 11.00, IRIX 6.5, OSF/1 5.1, Solaris 9, mingw */
+    ASSERT (errno == 0);                /* HP-UX 11.11, OSF/1 4.0 */
+  }
+  {
+    const char input[] = "infinitY.";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == HUGE_VAL);        /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (ptr == input + 8);          /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (errno == 0);                /* OSF/1 4.0 */
+  }
+
+  /* NaN.  Some processors set the sign bit of the default NaN, so all
+     we check is that using a sign changes the result.  */
+  {
+    const char input[] = "-nan";
+    char *ptr1;
+    char *ptr2;
+    double result1;
+    double result2;
+    errno = 0;
+    result1 = strtod (input, &ptr1);
+    result2 = strtod (input + 1, &ptr2);
+#if 1 /* All known CPUs support NaNs.  */
+    ASSERT (isnand (result1));          /* OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (isnand (result2));          /* OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, mingw */
+# if 0
+    /* Sign bits of NaN is a portability sticking point, not worth
+       worrying about.  */
+    ASSERT (!!signbit (result1) != !!signbit (result2)); /* glibc-2.3.6, IRIX 6.5, OSF/1 5.1, mingw */
+# endif
+    ASSERT (ptr1 == input + 4);         /* OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, Solaris 2.5.1, mingw */
+    ASSERT (ptr2 == input + 4);         /* OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, Solaris 2.5.1, mingw */
+    ASSERT (errno == 0);                /* HP-UX 11.11 */
+#else
+    ASSERT (result1 == 0.0);
+    ASSERT (result2 == 0.0);
+    ASSERT (!signbit (result1));
+    ASSERT (!signbit (result2));
+    ASSERT (ptr1 == input);
+    ASSERT (ptr2 == input + 1);
+    ASSERT (errno == 0 || errno == EINVAL);
+#endif
+  }
+  {
+    const char input[] = "+nan(";
+    char *ptr1;
+    char *ptr2;
+    double result1;
+    double result2;
+    errno = 0;
+    result1 = strtod (input, &ptr1);
+    result2 = strtod (input + 1, &ptr2);
+#if 1 /* All known CPUs support NaNs.  */
+    ASSERT (isnand (result1));          /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (isnand (result2));          /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (!!signbit (result1) == !!signbit (result2));
+    ASSERT (ptr1 == input + 4);         /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 2.5.1, mingw */
+    ASSERT (ptr2 == input + 4);         /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 2.5.1, mingw */
+    ASSERT (errno == 0);
+#else
+    ASSERT (result1 == 0.0);
+    ASSERT (result2 == 0.0);
+    ASSERT (!signbit (result1));
+    ASSERT (!signbit (result2));
+    ASSERT (ptr1 == input);
+    ASSERT (ptr2 == input + 1);
+    ASSERT (errno == 0 || errno == EINVAL);
+#endif
+  }
+  {
+    const char input[] = "-nan()";
+    char *ptr1;
+    char *ptr2;
+    double result1;
+    double result2;
+    errno = 0;
+    result1 = strtod (input, &ptr1);
+    result2 = strtod (input + 1, &ptr2);
+#if 1 /* All known CPUs support NaNs.  */
+    ASSERT (isnand (result1));          /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (isnand (result2));          /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+# if 0
+    /* Sign bits of NaN is a portability sticking point, not worth
+       worrying about.  */
+    ASSERT (!!signbit (result1) != !!signbit (result2)); /* glibc-2.3.6, IRIX 6.5, OSF/1 5.1, mingw */
+# endif
+    ASSERT (ptr1 == input + 6);         /* glibc-2.3.6, Mac OS X 10.3, FreeBSD 6.2, OpenBSD 4.0, AIX 7.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (ptr2 == input + 6);         /* glibc-2.3.6, Mac OS X 10.3, FreeBSD 6.2, OpenBSD 4.0, AIX 7.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (errno == 0);
+#else
+    ASSERT (result1 == 0.0);
+    ASSERT (result2 == 0.0);
+    ASSERT (!signbit (result1));
+    ASSERT (!signbit (result2));
+    ASSERT (ptr1 == input);
+    ASSERT (ptr2 == input + 1);
+    ASSERT (errno == 0 || errno == EINVAL);
+#endif
+  }
+  {
+    const char input[] = " nan().";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+#if 1 /* All known CPUs support NaNs.  */
+    ASSERT (isnand (result));           /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (ptr == input + 6);          /* glibc-2.3.6, Mac OS X 10.3, FreeBSD 6.2, OpenBSD 4.0, AIX 7.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (errno == 0);
+#else
+    ASSERT (result == 0.0);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+#endif
+  }
+  {
+    /* The behavior of nan(0) is implementation-defined, but all
+       implementations we know of which handle optional
+       n-char-sequences handle nan(0) the same as nan().  */
+    const char input[] = "-nan(0).";
+    char *ptr1;
+    char *ptr2;
+    double result1;
+    double result2;
+    errno = 0;
+    result1 = strtod (input, &ptr1);
+    result2 = strtod (input + 1, &ptr2);
+#if 1 /* All known CPUs support NaNs.  */
+    ASSERT (isnand (result1));          /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (isnand (result2));          /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+# if 0
+    /* Sign bits of NaN is a portability sticking point, not worth
+       worrying about.  */
+    ASSERT (!!signbit (result1) != !!signbit (result2)); /* glibc-2.3.6, IRIX 6.5, OSF/1 5.1, mingw */
+# endif
+    ASSERT (ptr1 == input + 7);         /* glibc-2.3.6, OpenBSD 4.0, AIX 7.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (ptr2 == input + 7);         /* glibc-2.3.6, OpenBSD 4.0, AIX 7.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+    ASSERT (errno == 0);
+#else
+    ASSERT (result1 == 0.0);
+    ASSERT (result2 == 0.0);
+    ASSERT (!signbit (result1));
+    ASSERT (!signbit (result2));
+    ASSERT (ptr1 == input);
+    ASSERT (ptr2 == input + 1);
+    ASSERT (errno == 0 || errno == EINVAL);
+#endif
+  }
+
+  /* Hex.  */
+  {
+    const char input[] = "0xa";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 10.0);            /* NetBSD 3.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (ptr == input + 3);          /* NetBSD 3.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0XA";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 10.0);            /* NetBSD 3.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (ptr == input + 3);          /* NetBSD 3.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x1p";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);             /* NetBSD 3.0, OpenBSD 4.0, AIX 7.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (ptr == input + 3);          /* NetBSD 3.0, OpenBSD 4.0, AIX 7.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x1p+";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);             /* NetBSD 3.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (ptr == input + 3);          /* NetBSD 3.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x1P+";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);             /* NetBSD 3.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (ptr == input + 3);          /* NetBSD 3.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x1p+1";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 2.0);             /* NetBSD 3.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (ptr == input + 6);          /* NetBSD 3.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0X1P+1";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 2.0);             /* NetBSD 3.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (ptr == input + 6);          /* NetBSD 3.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x1p+1a";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 2.0);             /* NetBSD 3.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (ptr == input + 6);          /* NetBSD 3.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x1p 2";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);             /* NetBSD 3.0, OpenBSD 4.0, AIX 7.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (ptr == input + 3);          /* NetBSD 3.0, OpenBSD 4.0, AIX 7.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw */
+    ASSERT (errno == 0);
+  }
+
+  /* Large buffers.  */
+  {
+    size_t m = 1000000;
+    char *input = malloc (m + 1);
+    if (input)
+      {
+        char *ptr;
+        double result;
+        memset (input, '\t', m - 1);
+        input[m - 1] = '1';
+        input[m] = '\0';
+        errno = 0;
+        result = strtod (input, &ptr);
+        ASSERT (result == 1.0);
+        ASSERT (ptr == input + m);
+        ASSERT (errno == 0);
+      }
+    free (input);
+  }
+  {
+    size_t m = 1000000;
+    char *input = malloc (m + 1);
+    if (input)
+      {
+        char *ptr;
+        double result;
+        memset (input, '0', m - 1);
+        input[m - 1] = '1';
+        input[m] = '\0';
+        errno = 0;
+        result = strtod (input, &ptr);
+        ASSERT (result == 1.0);
+        ASSERT (ptr == input + m);
+        ASSERT (errno == 0);
+      }
+    free (input);
+  }
+#if 0
+  /* Newlib has an artificial limit of 20000 for the exponent.  TODO -
+     gnulib should fix this.  */
+  {
+    size_t m = 1000000;
+    char *input = malloc (m + 1);
+    if (input)
+      {
+        char *ptr;
+        double result;
+        input[0] = '.';
+        memset (input + 1, '0', m - 10);
+        input[m - 9] = '1';
+        input[m - 8] = 'e';
+        input[m - 7] = '+';
+        input[m - 6] = '9';
+        input[m - 5] = '9';
+        input[m - 4] = '9';
+        input[m - 3] = '9';
+        input[m - 2] = '9';
+        input[m - 1] = '1';
+        input[m] = '\0';
+        errno = 0;
+        result = strtod (input, &ptr);
+        ASSERT (result == 1.0);         /* Mac OS X 10.3, FreeBSD 6.2, NetBSD 3.0, OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, mingw */
+        ASSERT (ptr == input + m);      /* OSF/1 5.1 */
+        ASSERT (errno == 0);            /* Mac OS X 10.3, FreeBSD 6.2, NetBSD 3.0, OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, mingw */
+      }
+    free (input);
+  }
+  {
+    size_t m = 1000000;
+    char *input = malloc (m + 1);
+    if (input)
+      {
+        char *ptr;
+        double result;
+        input[0] = '1';
+        memset (input + 1, '0', m - 9);
+        input[m - 8] = 'e';
+        input[m - 7] = '-';
+        input[m - 6] = '9';
+        input[m - 5] = '9';
+        input[m - 4] = '9';
+        input[m - 3] = '9';
+        input[m - 2] = '9';
+        input[m - 1] = '1';
+        input[m] = '\0';
+        errno = 0;
+        result = strtod (input, &ptr);
+        ASSERT (result == 1.0);         /* Mac OS X 10.3, FreeBSD 6.2, NetBSD 3.0, OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, mingw */
+        ASSERT (ptr == input + m);
+        ASSERT (errno == 0);            /* Mac OS X 10.3, FreeBSD 6.2, NetBSD 3.0, OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, mingw */
+      }
+    free (input);
+  }
+#endif
+  {
+    size_t m = 1000000;
+    char *input = malloc (m + 1);
+    if (input)
+      {
+        char *ptr;
+        double result;
+        input[0] = '-';
+        input[1] = '0';
+        input[2] = 'e';
+        input[3] = '1';
+        memset (input + 4, '0', m - 3);
+        input[m] = '\0';
+        errno = 0;
+        result = strtod (input, &ptr);
+        ASSERT (result == 0.0);
+        ASSERT (!!signbit (result) == !!signbit (minus_zerod)); /* IRIX 6.5, OSF/1 4.0 */
+        ASSERT (ptr == input + m);
+        ASSERT (errno == 0);
+      }
+    free (input);
+  }
+
+  /* Rounding.  */
+  /* TODO - is it worth some tests of rounding for typical IEEE corner
+     cases, such as .5 ULP rounding up to the smallest denormal and
+     not causing underflow, or DBL_MIN - .5 ULP not causing an
+     infinite loop?  */
+
+  return status;
+}
diff --git a/gnulib-tests/test-strtod1.c b/gnulib-tests/test-strtod1.c
new file mode 100644
index 0000000..47c6939
--- /dev/null
+++ b/gnulib-tests/test-strtod1.c
@@ -0,0 +1,101 @@
+/* Test of strtod() in a French locale.
+   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include <errno.h>
+#include <locale.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  /* Try to set the locale by implicitly looking at the LC_ALL environment
+     variable.
+     configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  {
+    const char input[] = "1,";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = ",5";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 0.5);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1,5";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result == 1.5);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1.5";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    /* On AIX 7.2, in the French locale, '.' is recognized as an alternate
+       radix character.  */
+    ASSERT ((ptr == input + 1 && result == 1.0)
+            || (ptr == input + 3 && result == 1.5));
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "123.456,789";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    /* On AIX 7.2, in the French locale, '.' is recognized as an alternate
+       radix character.  */
+    ASSERT ((ptr == input + 3 && result == 123.0)
+            || (ptr == input + 7 && result > 123.45 && result < 123.46));
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "123,456.789";
+    char *ptr;
+    double result;
+    errno = 0;
+    result = strtod (input, &ptr);
+    ASSERT (result > 123.45 && result < 123.46);
+    ASSERT (ptr == input + 7);
+    ASSERT (errno == 0);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-strtod1.sh b/gnulib-tests/test-strtod1.sh
new file mode 100755
index 0000000..2ec4ebf
--- /dev/null
+++ b/gnulib-tests/test-strtod1.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+: ${LOCALE_FR=fr_FR}
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+
+if test $LOCALE_FR = none && test $LOCALE_FR_UTF8 = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no locale for testing is installed"
+  else
+    echo "Skipping test: no locale for testing is supported"
+  fi
+  exit 77
+fi
+
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR      ${CHECKER} ./test-strtod1${EXEEXT} || exit 1
+fi
+
+if test $LOCALE_FR_UTF8 != none; then
+  LC_ALL=$LOCALE_FR_UTF8 ${CHECKER} ./test-strtod1${EXEEXT} || exit 1
+fi
+
+exit 0
diff --git a/gnulib-tests/test-strtoimax.c b/gnulib-tests/test-strtoimax.c
new file mode 100644
index 0000000..0ec4f8a
--- /dev/null
+++ b/gnulib-tests/test-strtoimax.c
@@ -0,0 +1,181 @@
+/*
+ * Copyright (C) 2011-2020 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <inttypes.h>
+
+#include "signature.h"
+#ifndef strtoimax
+SIGNATURE_CHECK (strtoimax, intmax_t, (const char *, char **, int));
+#endif
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Subject sequence empty or invalid.  */
+  {
+    const char input[] = "";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " ";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " +";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " -";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+
+  /* Simple integer values.  */
+  {
+    const char input[] = "0";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+0";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-0";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "23";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = " 23";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+23";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-23";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == -23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+
+  /* Large integer values.  */
+  {
+    const char input[] = "2147483647";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 2147483647);
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-2147483648";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == -2147483647 - 1);
+    ASSERT (ptr == input + 11);
+    ASSERT (errno == 0);
+  }
+  if (sizeof (intmax_t) > sizeof (int))
+    {
+      const char input[] = "4294967295";
+      char *ptr;
+      intmax_t result;
+      errno = 0;
+      result = strtoimax (input, &ptr, 10);
+      ASSERT (result == (intmax_t) 65535 * (intmax_t) 65537);
+      ASSERT (ptr == input + 10);
+      ASSERT (errno == 0);
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-strtold.c b/gnulib-tests/test-strtold.c
new file mode 100644
index 0000000..9caf539
--- /dev/null
+++ b/gnulib-tests/test-strtold.c
@@ -0,0 +1,980 @@
+/*
+ * Copyright (C) 2008-2020 Free Software Foundation, Inc.
+ * Written by Eric Blake
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (strtold, long double, (char const *, char **));
+
+#include <errno.h>
+#include <float.h>
+#include <math.h>
+#include <string.h>
+
+#include "isnanl-nolibm.h"
+#include "minus-zero.h"
+#include "macros.h"
+
+/* Avoid requiring -lm just for fabsl.  */
+#define FABSL(d) ((d) < 0.0L ? -(d) : (d))
+
+int
+main (void)
+{
+  int status = 0;
+  /* Subject sequence empty or invalid.  */
+  {
+    const char input[] = "";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " ";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " +";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " .";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " .e0";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);              /* IRIX 6.5 */
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " +.e-0";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);              /* IRIX 6.5 */
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " in";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " na";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+
+  /* Simple floating point values.  */
+  {
+    const char input[] = "1";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1.";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = ".5";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.5L);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = " 1";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+1";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-1";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == -1.0L);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1e0";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1e+0";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 4);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1e-0";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 4);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1e1";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 10.0L);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "5e-1";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.5L);
+    ASSERT (ptr == input + 4);
+    ASSERT (errno == 0);
+  }
+
+  /* Zero.  */
+  {
+    const char input[] = "0";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = ".0";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0e0";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0e+9999999";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0e-9999999";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-0";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!!signbit (result) == !!signbit (minus_zerol)); /* IRIX 6.5 */
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+
+  /* Suffixes.  */
+  {
+    const char input[] = "1f";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1.f";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1e";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1e+";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1e-";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1E 2";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);            /* HP-UX 11.31/ia64, IRIX 6.5 */
+    ASSERT (ptr == input + 1);          /* HP-UX 11.31/ia64, IRIX 6.5 */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.2, Mac OS X 10.5, Haiku */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "00x1";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-0x";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!!signbit (result) == !!signbit (minus_zerol)); /* Mac OS X 10.5, IRIX 6.5 */
+    ASSERT (ptr == input + 2);          /* glibc-2.3.2, Mac OS X 10.5, Haiku */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0xg";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.2, Mac OS X 10.5, Haiku */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0xp";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.2, Mac OS X 10.5, Haiku */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0XP";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.2, Mac OS X 10.5, Haiku */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x.";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.2, Mac OS X 10.5, Haiku */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0xp+";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.2, Mac OS X 10.5, Haiku */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0xp+1";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.2, Mac OS X 10.5, Haiku */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x.p+1";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 1);          /* glibc-2.3.2, Mac OS X 10.5, Haiku */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1p+1";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1P+1";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+
+  /* Overflow/underflow.  */
+  {
+    const char input[] = "1E1000000";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == HUGE_VALL);
+    ASSERT (ptr == input + 9);
+    ASSERT (errno == ERANGE);
+  }
+  {
+    const char input[] = "-1E1000000";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == -HUGE_VALL);
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == ERANGE);
+  }
+  {
+    const char input[] = "1E-100000";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (0.0L <= result && result <= LDBL_MIN);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input + 9);
+    ASSERT (errno == ERANGE);
+  }
+  {
+    const char input[] = "-1E-100000";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (-LDBL_MIN <= result && result <= 0.0L);
+#if 0
+    /* FIXME - this is glibc bug 5995; POSIX allows returning positive
+       0 on negative underflow, even though quality of implementation
+       demands preserving the sign.  Disable this test until fixed
+       glibc is more prevalent.  */
+    ASSERT (!!signbit (result) == !!signbit (minus_zerol)); /* glibc-2.3.2, Haiku */
+#endif
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == ERANGE);
+  }
+  {
+    const char input[] = "1E 1000000";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);            /* HP-UX 11.31/ia64, IRIX 6.5 */
+    ASSERT (ptr == input + 1);          /* HP-UX 11.31/ia64, IRIX 6.5 */
+    ASSERT (errno == 0);                /* HP-UX 11.31/ia64, IRIX 6.5 */
+  }
+  {
+    const char input[] = "0x1P 1000000";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);            /* HP-UX 11.31/ia64, IRIX 6.5, mingw */
+    ASSERT (ptr == input + 3);          /* HP-UX 11.31/ia64, IRIX 6.5, mingw */
+    ASSERT (errno == 0);
+  }
+
+  /* Infinity.  */
+  {
+    const char input[] = "iNf";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == HUGE_VALL);       /* IRIX 6.5 */
+    ASSERT (ptr == input + 3);          /* IRIX 6.5 */
+    ASSERT (errno == 0);                /* HP-UX 11.31/ia64 */
+  }
+  {
+    const char input[] = "-InF";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == -HUGE_VALL);      /* IRIX 6.5 */
+    ASSERT (ptr == input + 4);          /* IRIX 6.5 */
+    ASSERT (errno == 0);                /* HP-UX 11.31/ia64 */
+  }
+  {
+    const char input[] = "infinite";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == HUGE_VALL);       /* IRIX 6.5 */
+    ASSERT (ptr == input + 3);          /* IRIX 6.5 */
+    ASSERT (errno == 0);                /* HP-UX 11.31/ia64 */
+  }
+  {
+    const char input[] = "infinitY";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == HUGE_VALL);       /* IRIX 6.5 */
+    ASSERT (ptr == input + 8);          /* IRIX 6.5 */
+    ASSERT (errno == 0);                /* HP-UX 11.31/ia64 */
+  }
+  {
+    const char input[] = "infinitY.";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == HUGE_VALL);       /* IRIX 6.5 */
+    ASSERT (ptr == input + 8);          /* IRIX 6.5 */
+    ASSERT (errno == 0);                /* HP-UX 11.31/ia64 */
+  }
+
+  /* NaN.  Some processors set the sign bit of the default NaN, so all
+     we check is that using a sign changes the result.  */
+  {
+    const char input[] = "-nan";
+    char *ptr1;
+    char *ptr2;
+    long double result1;
+    long double result2;
+    errno = 0;
+    result1 = strtold (input, &ptr1);
+    result2 = strtold (input + 1, &ptr2);
+#if 1 /* All known CPUs support NaNs.  */
+    ASSERT (isnanl (result1));          /* IRIX 6.5 */
+    ASSERT (isnanl (result2));          /* IRIX 6.5 */
+# if 0
+    /* Sign bits of NaN is a portability sticking point, not worth
+       worrying about.  */
+    ASSERT (!!signbit (result1) != !!signbit (result2));
+# endif
+    ASSERT (ptr1 == input + 4);         /* IRIX 6.5 */
+    ASSERT (ptr2 == input + 4);         /* IRIX 6.5 */
+    ASSERT (errno == 0);                /* HP-UX 11.31/ia64 */
+#else
+    ASSERT (result1 == 0.0L);
+    ASSERT (result2 == 0.0L);
+    ASSERT (!signbit (result1));
+    ASSERT (!signbit (result2));
+    ASSERT (ptr1 == input);
+    ASSERT (ptr2 == input + 1);
+    ASSERT (errno == 0 || errno == EINVAL);
+#endif
+  }
+  {
+    const char input[] = "+nan(";
+    char *ptr1;
+    char *ptr2;
+    long double result1;
+    long double result2;
+    errno = 0;
+    result1 = strtold (input, &ptr1);
+    result2 = strtold (input + 1, &ptr2);
+#if 1 /* All known CPUs support NaNs.  */
+    ASSERT (isnanl (result1));          /* IRIX 6.5 */
+    ASSERT (isnanl (result2));          /* IRIX 6.5 */
+    ASSERT (!!signbit (result1) == !!signbit (result2));
+    ASSERT (ptr1 == input + 4);         /* Mac OS X 10.5, IRIX 6.5 */
+    ASSERT (ptr2 == input + 4);         /* Mac OS X 10.5, IRIX 6.5 */
+    ASSERT (errno == 0);                /* HP-UX 11.31/ia64 */
+#else
+    ASSERT (result1 == 0.0L);
+    ASSERT (result2 == 0.0L);
+    ASSERT (!signbit (result1));
+    ASSERT (!signbit (result2));
+    ASSERT (ptr1 == input);
+    ASSERT (ptr2 == input + 1);
+    ASSERT (errno == 0 || errno == EINVAL);
+#endif
+  }
+  {
+    const char input[] = "-nan()";
+    char *ptr1;
+    char *ptr2;
+    long double result1;
+    long double result2;
+    errno = 0;
+    result1 = strtold (input, &ptr1);
+    result2 = strtold (input + 1, &ptr2);
+#if 1 /* All known CPUs support NaNs.  */
+    ASSERT (isnanl (result1));          /* IRIX 6.5 */
+    ASSERT (isnanl (result2));          /* IRIX 6.5 */
+# if 0
+    /* Sign bits of NaN is a portability sticking point, not worth
+       worrying about.  */
+    ASSERT (!!signbit (result1) != !!signbit (result2)); /* glibc-2.3.2, musl libc, OpenBSD 6.0, IRIX 6.5, mingw, Haiku */
+# endif
+    ASSERT (ptr1 == input + 6);         /* glibc-2.3.2, IRIX 6.5, mingw, Haiku */
+    ASSERT (ptr2 == input + 6);         /* glibc-2.3.2, IRIX 6.5, mingw, Haiku */
+    ASSERT (errno == 0);                /* HP-UX 11.31/ia64, Haiku */
+#else
+    ASSERT (result1 == 0.0L);
+    ASSERT (result2 == 0.0L);
+    ASSERT (!signbit (result1));
+    ASSERT (!signbit (result2));
+    ASSERT (ptr1 == input);
+    ASSERT (ptr2 == input + 1);
+    ASSERT (errno == 0 || errno == EINVAL);
+#endif
+  }
+  {
+    const char input[] = " nan().";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+#if 1 /* All known CPUs support NaNs.  */
+    ASSERT (isnanl (result));           /* IRIX 6.5 */
+    ASSERT (ptr == input + 6);          /* glibc-2.3.2, IRIX 6.5, mingw, Haiku */
+    ASSERT (errno == 0);                /* HP-UX 11.31/ia64, Haiku */
+#else
+    ASSERT (result == 0.0L);
+    ASSERT (!signbit (result));
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+#endif
+  }
+  {
+    /* The behavior of nan(0) is implementation-defined, but all
+       implementations we know of which handle optional
+       n-char-sequences handle nan(0) the same as nan().  */
+    const char input[] = "-nan(0).";
+    char *ptr1;
+    char *ptr2;
+    long double result1;
+    long double result2;
+    errno = 0;
+    result1 = strtold (input, &ptr1);
+    result2 = strtold (input + 1, &ptr2);
+#if 1 /* All known CPUs support NaNs.  */
+    ASSERT (isnanl (result1));          /* IRIX 6.5 */
+    ASSERT (isnanl (result2));          /* IRIX 6.5 */
+# if 0
+    /* Sign bits of NaN is a portability sticking point, not worth
+       worrying about.  */
+    ASSERT (!!signbit (result1) != !!signbit (result2));
+# endif
+    ASSERT (ptr1 == input + 7);         /* glibc-2.3.2, IRIX 6.5, mingw, Haiku */
+    ASSERT (ptr2 == input + 7);         /* glibc-2.3.2, IRIX 6.5, mingw, Haiku */
+    ASSERT (errno == 0);                /* HP-UX 11.31/ia64 */
+#else
+    ASSERT (result1 == 0.0L);
+    ASSERT (result2 == 0.0L);
+    ASSERT (!signbit (result1));
+    ASSERT (!signbit (result2));
+    ASSERT (ptr1 == input);
+    ASSERT (ptr2 == input + 1);
+    ASSERT (errno == 0 || errno == EINVAL);
+#endif
+  }
+
+  /* Hex.  */
+  {
+    const char input[] = "0xa";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 10.0L);           /* IRIX 6.5, mingw */
+    ASSERT (ptr == input + 3);          /* IRIX 6.5, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0XA";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 10.0L);           /* IRIX 6.5, mingw */
+    ASSERT (ptr == input + 3);          /* IRIX 6.5, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x1p";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);            /* IRIX 6.5, mingw */
+    ASSERT (ptr == input + 3);          /* IRIX 6.5, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x1p+";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);            /* IRIX 6.5, mingw */
+    ASSERT (ptr == input + 3);          /* IRIX 6.5, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x1P+";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);            /* IRIX 6.5, mingw */
+    ASSERT (ptr == input + 3);          /* IRIX 6.5, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x1p+1";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 2.0L);            /* IRIX 6.5, mingw */
+    ASSERT (ptr == input + 6);          /* IRIX 6.5, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0X1P+1";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 2.0L);            /* IRIX 6.5, mingw */
+    ASSERT (ptr == input + 6);          /* IRIX 6.5, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x1p+1a";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 2.0L);            /* IRIX 6.5, mingw */
+    ASSERT (ptr == input + 6);          /* IRIX 6.5, mingw */
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x1p 2";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);            /* HP-UX 11.31/ia64, IRIX 6.5, mingw */
+    ASSERT (ptr == input + 3);          /* HP-UX 11.31/ia64, IRIX 6.5, mingw */
+    ASSERT (errno == 0);
+  }
+
+  /* Large buffers.  */
+  {
+    size_t m = 1000000;
+    char *input = malloc (m + 1);
+    if (input)
+      {
+        char *ptr;
+        long double result;
+        memset (input, '\t', m - 1);
+        input[m - 1] = '1';
+        input[m] = '\0';
+        errno = 0;
+        result = strtold (input, &ptr);
+        ASSERT (result == 1.0L);
+        ASSERT (ptr == input + m);
+        ASSERT (errno == 0);
+      }
+    free (input);
+  }
+  {
+    size_t m = 1000000;
+    char *input = malloc (m + 1);
+    if (input)
+      {
+        char *ptr;
+        long double result;
+        memset (input, '0', m - 1);
+        input[m - 1] = '1';
+        input[m] = '\0';
+        errno = 0;
+        result = strtold (input, &ptr);
+        ASSERT (result == 1.0L);
+        ASSERT (ptr == input + m);
+        ASSERT (errno == 0);
+      }
+    free (input);
+  }
+#if 0
+  /* Newlib has an artificial limit of 20000 for the exponent.  TODO -
+     gnulib should fix this.  */
+  {
+    size_t m = 1000000;
+    char *input = malloc (m + 1);
+    if (input)
+      {
+        char *ptr;
+        long double result;
+        input[0] = '.';
+        memset (input + 1, '0', m - 10);
+        input[m - 9] = '1';
+        input[m - 8] = 'e';
+        input[m - 7] = '+';
+        input[m - 6] = '9';
+        input[m - 5] = '9';
+        input[m - 4] = '9';
+        input[m - 3] = '9';
+        input[m - 2] = '9';
+        input[m - 1] = '1';
+        input[m] = '\0';
+        errno = 0;
+        result = strtold (input, &ptr);
+        ASSERT (result == 1.0L);        /* Mac OS X 10.5, FreeBSD 11.0, NetBSD 7.1, OpenBSD 6.0, Minix 3.3, IRIX 6.5, mingw */
+        ASSERT (ptr == input + m);
+        ASSERT (errno == 0);            /* Mac OS X 10.5, FreeBSD 11.0, NetBSD 7.1, OpenBSD 6.0, Minix 3.3, IRIX 6.5, mingw */
+      }
+    free (input);
+  }
+  {
+    size_t m = 1000000;
+    char *input = malloc (m + 1);
+    if (input)
+      {
+        char *ptr;
+        long double result;
+        input[0] = '1';
+        memset (input + 1, '0', m - 9);
+        input[m - 8] = 'e';
+        input[m - 7] = '-';
+        input[m - 6] = '9';
+        input[m - 5] = '9';
+        input[m - 4] = '9';
+        input[m - 3] = '9';
+        input[m - 2] = '9';
+        input[m - 1] = '1';
+        input[m] = '\0';
+        errno = 0;
+        result = strtold (input, &ptr);
+        ASSERT (result == 1.0L);        /* Mac OS X 10.5, FreeBSD 11.0, NetBSD 7.1, OpenBSD 6.0, Minix 3.3, IRIX 6.5, mingw */
+        ASSERT (ptr == input + m);
+        ASSERT (errno == 0);            /* Mac OS X 10.5, FreeBSD 11.0, NetBSD 7.1, OpenBSD 6.0, Minix 3.3, IRIX 6.5, mingw */
+      }
+    free (input);
+  }
+#endif
+  {
+    size_t m = 1000000;
+    char *input = malloc (m + 1);
+    if (input)
+      {
+        char *ptr;
+        long double result;
+        input[0] = '-';
+        input[1] = '0';
+        input[2] = 'e';
+        input[3] = '1';
+        memset (input + 4, '0', m - 3);
+        input[m] = '\0';
+        errno = 0;
+        result = strtold (input, &ptr);
+        ASSERT (result == 0.0L);
+        ASSERT (!!signbit (result) == !!signbit (minus_zerol)); /* IRIX 6.5 */
+        ASSERT (ptr == input + m);
+        ASSERT (errno == 0);
+      }
+    free (input);
+  }
+
+  /* Rounding.  */
+  /* TODO - is it worth some tests of rounding for typical IEEE corner
+     cases, such as .5 ULP rounding up to the smallest denormal and
+     not causing underflow, or LDBL_MIN - .5 ULP not causing an
+     infinite loop?  */
+
+  return status;
+}
diff --git a/gnulib-tests/test-strtold1.c b/gnulib-tests/test-strtold1.c
new file mode 100644
index 0000000..9bc1b9d
--- /dev/null
+++ b/gnulib-tests/test-strtold1.c
@@ -0,0 +1,101 @@
+/* Test of strtold() in a French locale.
+   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include <errno.h>
+#include <locale.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  /* Try to set the locale by implicitly looking at the LC_ALL environment
+     variable.
+     configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  {
+    const char input[] = "1,";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.0L);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = ",5";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 0.5L);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1,5";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result == 1.5L);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "1.5";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    /* On AIX 7.2, in the French locale, '.' is recognized as an alternate
+       radix character.  */
+    ASSERT ((ptr == input + 1 && result == 1.0L)
+            || (ptr == input + 3 && result == 1.5L));
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "123.456,789";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    /* On AIX 7.2, in the French locale, '.' is recognized as an alternate
+       radix character.  */
+    ASSERT ((ptr == input + 3 && result == 123.0L)
+            || (ptr == input + 7 && result > 123.45L && result < 123.46L));
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "123,456.789";
+    char *ptr;
+    long double result;
+    errno = 0;
+    result = strtold (input, &ptr);
+    ASSERT (result > 123.45L && result < 123.46L);
+    ASSERT (ptr == input + 7);
+    ASSERT (errno == 0);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-strtold1.sh b/gnulib-tests/test-strtold1.sh
new file mode 100755
index 0000000..3f4c4b9
--- /dev/null
+++ b/gnulib-tests/test-strtold1.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+: ${LOCALE_FR=fr_FR}
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+
+if test $LOCALE_FR = none && test $LOCALE_FR_UTF8 = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no locale for testing is installed"
+  else
+    echo "Skipping test: no locale for testing is supported"
+  fi
+  exit 77
+fi
+
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR      ${CHECKER} ./test-strtold1${EXEEXT} || exit 1
+fi
+
+if test $LOCALE_FR_UTF8 != none; then
+  LC_ALL=$LOCALE_FR_UTF8 ${CHECKER} ./test-strtold1${EXEEXT} || exit 1
+fi
+
+exit 0
diff --git a/gnulib-tests/test-strtoll.c b/gnulib-tests/test-strtoll.c
new file mode 100644
index 0000000..12d8daf
--- /dev/null
+++ b/gnulib-tests/test-strtoll.c
@@ -0,0 +1,181 @@
+/*
+ * Copyright (C) 2011-2020 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "signature.h"
+#ifndef strtoll
+SIGNATURE_CHECK (strtoll, long long, (const char *, char **, int));
+#endif
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Subject sequence empty or invalid.  */
+  {
+    const char input[] = "";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " ";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " +";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " -";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+
+  /* Simple integer values.  */
+  {
+    const char input[] = "0";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+0";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-0";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "23";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = " 23";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+23";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-23";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == -23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+
+  /* Large integer values.  */
+  {
+    const char input[] = "2147483647";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 2147483647);
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-2147483648";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == -2147483647 - 1);
+    ASSERT (ptr == input + 11);
+    ASSERT (errno == 0);
+  }
+  if (sizeof (long long) > sizeof (int))
+    {
+      const char input[] = "4294967295";
+      char *ptr;
+      long long result;
+      errno = 0;
+      result = strtoll (input, &ptr, 10);
+      ASSERT (result == 65535LL * 65537LL);
+      ASSERT (ptr == input + 10);
+      ASSERT (errno == 0);
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-strtoull.c b/gnulib-tests/test-strtoull.c
new file mode 100644
index 0000000..8d8e0b5
--- /dev/null
+++ b/gnulib-tests/test-strtoull.c
@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) 2011-2020 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "signature.h"
+#ifndef strtoull
+SIGNATURE_CHECK (strtoull, unsigned long long, (const char *, char **, int));
+#endif
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Subject sequence empty or invalid.  */
+  {
+    const char input[] = "";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " ";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " +";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " -";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+
+  /* Simple integer values.  */
+  {
+    const char input[] = "0";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+0";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-0";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "23";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = " 23";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+23";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-23";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == - 23ULL);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+
+  /* Large integer values.  */
+  {
+    const char input[] = "2147483647";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 2147483647);
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-2147483648";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == - 2147483648ULL);
+    ASSERT (ptr == input + 11);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "4294967295";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 4294967295U);
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-strtoumax.c b/gnulib-tests/test-strtoumax.c
new file mode 100644
index 0000000..e086c88
--- /dev/null
+++ b/gnulib-tests/test-strtoumax.c
@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) 2011-2020 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <inttypes.h>
+
+#include "signature.h"
+#ifndef strtoumax
+SIGNATURE_CHECK (strtoumax, uintmax_t, (const char *, char **, int));
+#endif
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Subject sequence empty or invalid.  */
+  {
+    const char input[] = "";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " ";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " +";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " -";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+
+  /* Simple integer values.  */
+  {
+    const char input[] = "0";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+0";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-0";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "23";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = " 23";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+23";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-23";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == - (uintmax_t) 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+
+  /* Large integer values.  */
+  {
+    const char input[] = "2147483647";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 2147483647);
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-2147483648";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == - (uintmax_t) 2147483648U);
+    ASSERT (ptr == input + 11);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "4294967295";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 4294967295U);
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-symlink.c b/gnulib-tests/test-symlink.c
new file mode 100644
index 0000000..76ac63f
--- /dev/null
+++ b/gnulib-tests/test-symlink.c
@@ -0,0 +1,47 @@
+/* Tests of symlink.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (symlink, int, (char const *, char const *));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-symlink.t"
+
+#include "test-symlink.h"
+
+int
+main (void)
+{
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_symlink (symlink, true);
+}
diff --git a/gnulib-tests/test-symlink.h b/gnulib-tests/test-symlink.h
new file mode 100644
index 0000000..da6b184
--- /dev/null
+++ b/gnulib-tests/test-symlink.h
@@ -0,0 +1,96 @@
+/* Tests of symlink.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+/* This file is designed to test both symlink(a,b) and
+   symlinkat(a,AT_FDCWD,b).  FUNC is the function to test.  Assumes
+   that BASE and ASSERT are already defined, and that appropriate
+   headers are already included.  If PRINT, warn before skipping
+   symlink tests with status 77.  */
+
+static int
+test_symlink (int (*func) (char const *, char const *), bool print)
+{
+  if (func ("nowhere", BASE "link1"))
+    {
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+
+  /* Some systems allow the creation of 0-length symlinks as a synonym
+     for "."; but most reject it.  */
+  {
+    int status;
+    errno = 0;
+    status = func ("", BASE "link2");
+    if (status == -1)
+      ASSERT (errno == ENOENT || errno == EINVAL);
+    else
+      {
+        ASSERT (status == 0);
+        ASSERT (unlink (BASE "link2") == 0);
+      }
+  }
+
+  /* Sanity checks of failures.  */
+  errno = 0;
+  ASSERT (func ("nowhere", "") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("nowhere", ".") == -1);
+  ASSERT (errno == EEXIST || errno == EINVAL);
+  errno = 0;
+  ASSERT (func ("somewhere", BASE "link1") == -1);
+  ASSERT (errno == EEXIST);
+  errno = 0;
+  ASSERT (func ("nowhere", BASE "link2/") == -1);
+  ASSERT (errno == ENOTDIR || errno == ENOENT);
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  errno = 0;
+  ASSERT (func ("nowhere", BASE "dir") == -1);
+  ASSERT (errno == EEXIST);
+  errno = 0;
+  ASSERT (func ("nowhere", BASE "dir/") == -1);
+  ASSERT (errno == EEXIST || errno == EINVAL
+          || errno == ENOENT /* Lustre FS on Linux */);
+  ASSERT (close (creat (BASE "file", 0600)) == 0);
+  errno = 0;
+  ASSERT (func ("nowhere", BASE "file") == -1);
+  ASSERT (errno == EEXIST);
+  errno = 0;
+  ASSERT (func ("nowhere", BASE "file/") == -1);
+  ASSERT (errno == EEXIST || errno == ENOTDIR || errno == ENOENT);
+
+  /* Trailing slash must always be rejected.  */
+  ASSERT (unlink (BASE "link1") == 0);
+  ASSERT (func (BASE "link2", BASE "link1") == 0);
+  errno = 0;
+  ASSERT (func (BASE "nowhere", BASE "link1/") == -1);
+  ASSERT (errno == EEXIST || errno == ENOTDIR || errno == ENOENT);
+  errno = 0;
+  ASSERT (unlink (BASE "link2") == -1);
+  ASSERT (errno == ENOENT);
+
+  /* Cleanup.  */
+  ASSERT (rmdir (BASE "dir") == 0);
+  ASSERT (unlink (BASE "file") == 0);
+  ASSERT (unlink (BASE "link1") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-symlinkat.c b/gnulib-tests/test-symlinkat.c
new file mode 100644
index 0000000..a0eb265
--- /dev/null
+++ b/gnulib-tests/test-symlinkat.c
@@ -0,0 +1,89 @@
+/* Tests of symlinkat.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (symlinkat, int, (char const *, int, char const *));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#ifndef HAVE_SYMLINK
+# define HAVE_SYMLINK 0
+#endif
+
+#define BASE "test-symlinkat.t"
+
+#include "test-symlink.h"
+
+static int dfd = AT_FDCWD;
+
+static int
+do_symlink (char const *contents, char const *name)
+{
+  return symlinkat (contents, dfd, name);
+}
+
+int
+main (void)
+{
+  int result;
+
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (symlinkat ("foo", -1, "bar") == -1);
+    ASSERT (errno == EBADF
+            || errno == ENOSYS /* seen on mingw */
+           );
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (symlinkat ("foo", 99, "bar") == -1);
+    ASSERT (errno == EBADF
+            || errno == ENOSYS /* seen on mingw */
+           );
+  }
+
+  /* Perform same checks as counterpart functions.  */
+  result = test_symlink (do_symlink, false);
+  dfd = openat (AT_FDCWD, ".", O_RDONLY);
+  ASSERT (0 <= dfd);
+  ASSERT (test_symlink (do_symlink, false) == result);
+
+  ASSERT (close (dfd) == 0);
+  if (result == 77)
+    fputs ("skipping test: symlinks not supported on this file system\n",
+           stderr);
+  return result;
+}
diff --git a/gnulib-tests/test-sys_ioctl.c b/gnulib-tests/test-sys_ioctl.c
new file mode 100644
index 0000000..3aeb375
--- /dev/null
+++ b/gnulib-tests/test-sys_ioctl.c
@@ -0,0 +1,27 @@
+/* Test of <sys/ioctl.h> substitute.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <sys/ioctl.h>
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-sys_resource.c b/gnulib-tests/test-sys_resource.c
new file mode 100644
index 0000000..e4b3bfa
--- /dev/null
+++ b/gnulib-tests/test-sys_resource.c
@@ -0,0 +1,72 @@
+/* Test of <sys/resource.h> substitute.
+   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/resource.h>
+
+/* Check that necessary types are defined.  */
+#ifdef TODO /* Not implemented in gnulib yet */
+rlim_t t1;
+struct rlimit t2;
+#endif
+struct rusage t3;
+#ifdef TODO
+struct timeval t4;
+id_t t5;
+time_t t10;
+suseconds_t t11;
+fd_set t12;
+#endif
+
+/* Check that the necessary constants are defined.  */
+#ifdef TODO /* Not implemented in gnulib yet */
+int prios[] =
+  {
+    PRIO_PROCESS,
+    PRIO_PGRP,
+    PRIO_USER
+  };
+int rlims[] =
+  {
+    RLIM_INFINITY,
+    RLIM_SAVED_MAX,
+    RLIM_SAVED_CUR
+  };
+#endif
+int rusages[] =
+  {
+    RUSAGE_SELF,
+    RUSAGE_CHILDREN
+  };
+#ifdef TODO
+int rlimits[] =
+  {
+    RLIMIT_CORE,
+    RLIMIT_CPU,
+    RLIMIT_DATA,
+    RLIMIT_FSIZE,
+    RLIMIT_NOFILE,
+    RLIMIT_STACK,
+    RLIMIT_AS
+  };
+#endif
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-sys_select.c b/gnulib-tests/test-sys_select.c
new file mode 100644
index 0000000..01eced5
--- /dev/null
+++ b/gnulib-tests/test-sys_select.c
@@ -0,0 +1,59 @@
+/* Test of <sys/select.h> substitute.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <sys/select.h>
+
+#include "signature.h"
+
+/* The following may be macros without underlying functions, so only
+   check signature if they are not macros.  */
+#ifndef FD_CLR
+SIGNATURE_CHECK (FD_CLR, void, (int, fd_set *));
+#endif
+#ifndef FD_ISSET
+SIGNATURE_CHECK (FD_ISSET, void, (int, fd_set *));
+#endif
+#ifndef FD_SET
+SIGNATURE_CHECK (FD_SET, int, (int, fd_set *));
+#endif
+#ifndef FD_ZERO
+SIGNATURE_CHECK (FD_ZERO, void, (fd_set *));
+#endif
+
+/* Check that the 'struct timeval' type is defined.  */
+struct timeval a;
+
+/* Check that a.tv_sec is wide enough to hold a time_t, ignoring
+   signedness issues.  */
+typedef int verify_tv_sec_type[sizeof (time_t) <= sizeof (a.tv_sec) ? 1 : -1];
+
+/* Check that sigset_t is defined.  */
+sigset_t t2;
+
+int
+main (void)
+{
+  /* Check that FD_ZERO can be used.  This should not yield a warning
+     such as "warning: implicit declaration of function 'memset'".  */
+  fd_set fds;
+  FD_ZERO (&fds);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-sys_socket.c b/gnulib-tests/test-sys_socket.c
new file mode 100644
index 0000000..82c1419
--- /dev/null
+++ b/gnulib-tests/test-sys_socket.c
@@ -0,0 +1,68 @@
+/* Test of <sys/socket.h> substitute.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <sys/socket.h>
+
+#include <errno.h>
+
+#if HAVE_SHUTDOWN
+/* Check some integer constant expressions.  */
+int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };
+#endif
+
+/* Check that the 'socklen_t' type is defined.  */
+socklen_t t1;
+
+/* Check that the 'size_t' and 'ssize_t' types are defined.  */
+size_t t2;
+ssize_t t3;
+
+/* Check that 'struct iovec' is defined.  */
+struct iovec io;
+
+/* Check that a minimal set of 'struct msghdr' is defined.  */
+struct msghdr msg;
+
+int
+main (void)
+{
+  struct sockaddr_storage x;
+  sa_family_t i;
+
+  /* Check some errno values.  */
+  switch (ENOTSOCK)
+    {
+    case ENOTSOCK:
+    case EADDRINUSE:
+    case ENETRESET:
+    case ECONNABORTED:
+    case ECONNRESET:
+    case ENOTCONN:
+    case ESHUTDOWN:
+      break;
+    }
+
+  x.ss_family = 42;
+  i = 42;
+  msg.msg_iov = &io;
+
+  return (x.ss_family - i + msg.msg_namelen + msg.msg_iov->iov_len
+          + msg.msg_iovlen);
+}
diff --git a/gnulib-tests/test-sys_stat.c b/gnulib-tests/test-sys_stat.c
new file mode 100644
index 0000000..a75f5f6
--- /dev/null
+++ b/gnulib-tests/test-sys_stat.c
@@ -0,0 +1,340 @@
+/* Test of <sys/stat.h> substitute.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include "verify.h"
+
+/* Check the existence of some macros.  */
+int a[] =
+  {
+    S_IFMT,
+#ifdef S_IFBLK /* missing on MSVC */
+    S_IFBLK,
+#endif
+    S_IFCHR, S_IFDIR, S_IFIFO, S_IFREG,
+#ifdef S_IFLNK /* missing on native Windows and DJGPP */
+    S_IFLNK,
+#endif
+#ifdef S_IFSOCK /* missing on native Windows and DJGPP */
+    S_IFSOCK,
+#endif
+    S_IRWXU, S_IRUSR, S_IWUSR, S_IXUSR,
+    S_IRWXG, S_IRGRP, S_IWGRP, S_IXGRP,
+    S_IRWXO, S_IROTH, S_IWOTH, S_IXOTH,
+    S_ISUID, S_ISGID, S_ISVTX,
+    S_ISBLK (S_IFREG),
+    S_ISCHR (S_IFREG),
+    S_ISDIR (S_IFREG),
+    S_ISFIFO (S_IFREG),
+    S_ISREG (S_IFREG),
+    S_ISLNK (S_IFREG),
+    S_ISSOCK (S_IFREG),
+    S_ISDOOR (S_IFREG),
+    S_ISMPB (S_IFREG),
+    S_ISMPX (S_IFREG),
+    S_ISNAM (S_IFREG),
+    S_ISNWK (S_IFREG),
+    S_ISPORT (S_IFREG),
+    S_ISCTG (S_IFREG),
+    S_ISOFD (S_IFREG),
+    S_ISOFL (S_IFREG),
+    S_ISWHT (S_IFREG)
+  };
+
+/* Sanity checks.  */
+
+verify (S_IRWXU == (S_IRUSR | S_IWUSR | S_IXUSR));
+verify (S_IRWXG == (S_IRGRP | S_IWGRP | S_IXGRP));
+verify (S_IRWXO == (S_IROTH | S_IWOTH | S_IXOTH));
+
+#ifdef S_IFBLK
+verify (S_ISBLK (S_IFBLK));
+#endif
+verify (!S_ISBLK (S_IFCHR));
+verify (!S_ISBLK (S_IFDIR));
+verify (!S_ISBLK (S_IFIFO));
+verify (!S_ISBLK (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISBLK (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISBLK (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISCHR (S_IFBLK));
+#endif
+verify (S_ISCHR (S_IFCHR));
+verify (!S_ISCHR (S_IFDIR));
+verify (!S_ISCHR (S_IFIFO));
+verify (!S_ISCHR (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISCHR (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISCHR (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISDIR (S_IFBLK));
+#endif
+verify (!S_ISDIR (S_IFCHR));
+verify (S_ISDIR (S_IFDIR));
+verify (!S_ISDIR (S_IFIFO));
+verify (!S_ISDIR (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISDIR (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISDIR (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISFIFO (S_IFBLK));
+#endif
+verify (!S_ISFIFO (S_IFCHR));
+verify (!S_ISFIFO (S_IFDIR));
+verify (S_ISFIFO (S_IFIFO));
+verify (!S_ISFIFO (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISFIFO (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISFIFO (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISREG (S_IFBLK));
+#endif
+verify (!S_ISREG (S_IFCHR));
+verify (!S_ISREG (S_IFDIR));
+verify (!S_ISREG (S_IFIFO));
+verify (S_ISREG (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISREG (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISREG (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISLNK (S_IFBLK));
+#endif
+verify (!S_ISLNK (S_IFCHR));
+verify (!S_ISLNK (S_IFDIR));
+verify (!S_ISLNK (S_IFIFO));
+verify (!S_ISLNK (S_IFREG));
+#ifdef S_IFLNK
+verify (S_ISLNK (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISLNK (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISSOCK (S_IFBLK));
+#endif
+verify (!S_ISSOCK (S_IFCHR));
+verify (!S_ISSOCK (S_IFDIR));
+verify (!S_ISSOCK (S_IFIFO));
+verify (!S_ISSOCK (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISSOCK (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (S_ISSOCK (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISDOOR (S_IFBLK));
+#endif
+verify (!S_ISDOOR (S_IFCHR));
+verify (!S_ISDOOR (S_IFDIR));
+verify (!S_ISDOOR (S_IFIFO));
+verify (!S_ISDOOR (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISDOOR (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISDOOR (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISMPB (S_IFBLK));
+#endif
+verify (!S_ISMPB (S_IFCHR));
+verify (!S_ISMPB (S_IFDIR));
+verify (!S_ISMPB (S_IFIFO));
+verify (!S_ISMPB (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISMPB (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISMPB (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISMPX (S_IFBLK));
+#endif
+verify (!S_ISMPX (S_IFCHR));
+verify (!S_ISMPX (S_IFDIR));
+verify (!S_ISMPX (S_IFIFO));
+verify (!S_ISMPX (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISMPX (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISMPX (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISNAM (S_IFBLK));
+#endif
+verify (!S_ISNAM (S_IFCHR));
+verify (!S_ISNAM (S_IFDIR));
+verify (!S_ISNAM (S_IFIFO));
+verify (!S_ISNAM (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISNAM (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISNAM (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISNWK (S_IFBLK));
+#endif
+verify (!S_ISNWK (S_IFCHR));
+verify (!S_ISNWK (S_IFDIR));
+verify (!S_ISNWK (S_IFIFO));
+verify (!S_ISNWK (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISNWK (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISNWK (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISPORT (S_IFBLK));
+#endif
+verify (!S_ISPORT (S_IFCHR));
+verify (!S_ISPORT (S_IFDIR));
+verify (!S_ISPORT (S_IFIFO));
+verify (!S_ISPORT (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISPORT (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISPORT (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISCTG (S_IFBLK));
+#endif
+verify (!S_ISCTG (S_IFCHR));
+verify (!S_ISCTG (S_IFDIR));
+verify (!S_ISCTG (S_IFIFO));
+verify (!S_ISCTG (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISCTG (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISCTG (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISOFD (S_IFBLK));
+#endif
+verify (!S_ISOFD (S_IFCHR));
+verify (!S_ISOFD (S_IFDIR));
+verify (!S_ISOFD (S_IFIFO));
+verify (!S_ISOFD (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISOFD (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISOFD (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISOFL (S_IFBLK));
+#endif
+verify (!S_ISOFL (S_IFCHR));
+verify (!S_ISOFL (S_IFDIR));
+verify (!S_ISOFL (S_IFIFO));
+verify (!S_ISOFL (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISOFL (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISOFL (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISWHT (S_IFBLK));
+#endif
+verify (!S_ISWHT (S_IFCHR));
+verify (!S_ISWHT (S_IFDIR));
+verify (!S_ISWHT (S_IFIFO));
+verify (!S_ISWHT (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISWHT (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISWHT (S_IFSOCK));
+#endif
+
+/* POSIX 2008 requires traditional encoding of permission constants.  */
+verify (S_IRWXU == 00700);
+verify (S_IRUSR == 00400);
+verify (S_IWUSR == 00200);
+verify (S_IXUSR == 00100);
+verify (S_IRWXG == 00070);
+verify (S_IRGRP == 00040);
+verify (S_IWGRP == 00020);
+verify (S_IXGRP == 00010);
+verify (S_IRWXO == 00007);
+verify (S_IROTH == 00004);
+verify (S_IWOTH == 00002);
+verify (S_IXOTH == 00001);
+verify (S_ISUID == 04000);
+verify (S_ISGID == 02000);
+verify (S_ISVTX == 01000);
+
+#if ((0 <= UTIME_NOW && UTIME_NOW < 1000000000)           \
+     || (0 <= UTIME_OMIT && UTIME_OMIT < 1000000000)      \
+     || UTIME_NOW == UTIME_OMIT)
+invalid UTIME macros
+#endif
+
+/* Check the existence of some types.  */
+nlink_t t1;
+off_t t2;
+mode_t t3;
+
+struct timespec st;
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-sys_time.c b/gnulib-tests/test-sys_time.c
new file mode 100644
index 0000000..db9909b
--- /dev/null
+++ b/gnulib-tests/test-sys_time.c
@@ -0,0 +1,34 @@
+/* Test of <sys/time.h> substitute.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <sys/time.h>
+
+/* Check that the 'struct timeval' type is defined.  */
+struct timeval a;
+
+/* Check that a.tv_sec is wide enough to hold a time_t, ignoring
+   signedness issues.  */
+typedef int verify_tv_sec_type[sizeof (time_t) <= sizeof (a.tv_sec) ? 1 : -1];
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-sys_types.c b/gnulib-tests/test-sys_types.c
new file mode 100644
index 0000000..65d49dc
--- /dev/null
+++ b/gnulib-tests/test-sys_types.c
@@ -0,0 +1,34 @@
+/* Test of <sys/types.h> substitute.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include <sys/types.h>
+
+/* Check that the types are all defined.  */
+pid_t t1;
+size_t t2;
+ssize_t t3;
+off_t t4;
+mode_t t5;
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-sys_uio.c b/gnulib-tests/test-sys_uio.c
new file mode 100644
index 0000000..fc62cf3
--- /dev/null
+++ b/gnulib-tests/test-sys_uio.c
@@ -0,0 +1,32 @@
+/* Test of <sys/uio.h> substitute.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <eblake@redhat.com>, 2011.  */
+
+#include <config.h>
+
+#include <sys/uio.h>
+
+/* Check that necessary types are defined.  */
+size_t a;
+ssize_t b;
+struct iovec c;
+
+int
+main (void)
+{
+  return a + b + !!c.iov_base + c.iov_len;
+}
diff --git a/gnulib-tests/test-sys_utsname.c b/gnulib-tests/test-sys_utsname.c
new file mode 100644
index 0000000..38efa5d
--- /dev/null
+++ b/gnulib-tests/test-sys_utsname.c
@@ -0,0 +1,37 @@
+/* Test of <sys/utsname.h> substitute.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+#include <sys/utsname.h>
+
+#include <string.h>
+
+int
+main ()
+{
+  struct utsname buf;
+
+  strcpy (buf.sysname, "Linux");
+  strcpy (buf.nodename, "hobbybox");
+  strcpy (buf.release, "3.141.592");
+  strcpy (buf.version, "GENERIC");
+  strcpy (buf.machine, "i586");
+
+  return 0;
+}
diff --git a/gnulib-tests/test-sys_wait.c b/gnulib-tests/test-sys_wait.c
new file mode 100644
index 0000000..443fef8
--- /dev/null
+++ b/gnulib-tests/test-sys_wait.c
@@ -0,0 +1,47 @@
+/* Test of <sys/wait.h> substitute.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <sys/wait.h>
+
+/* Check for existence of required types.  */
+static pid_t a;
+
+#include "test-sys_wait.h"
+
+int
+main (void)
+{
+  if (test_sys_wait_macros ())
+    return 1;
+
+#if 0
+  switch (WCONTINUED)
+    {
+  /* Gnulib doesn't guarantee these, yet.  */
+    case WCONTINUED:
+    case WEXITED:
+    case WNOWAIT:
+    case WSTOPPED:
+      break;
+    }
+#endif
+
+  return a ? 1 : 0;
+}
diff --git a/gnulib-tests/test-sys_wait.h b/gnulib-tests/test-sys_wait.h
new file mode 100644
index 0000000..20c4f31
--- /dev/null
+++ b/gnulib-tests/test-sys_wait.h
@@ -0,0 +1,53 @@
+/* Test of macros shared between <sys/wait.h> and <stdlib.h>.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2010.  */
+
+static int
+test_sys_wait_macros (void)
+{
+  /* Check subset of <sys/wait.h> macros that must be visible here.
+     Note that some of these macros are only portable when operating
+     on an lvalue.  */
+  int i;
+  for (i = 0; i < 0x8000; i = (i ? i << 1 : 1))
+    {
+      /* POSIX requires that for all valid process statuses, that
+         exactly one of these three macros is true.  But not all
+         possible 16-bit values map to valid process status.
+         Traditionally, 8 of the bits are for WIFEXITED, 7 of the bits
+         to tell between WIFSIGNALED and WIFSTOPPED, and either 0x80
+         or 0x8000 to flag that core was also dumped.  Since we don't
+         know which byte is WIFEXITED, we skip the both possible bits
+         that can signal core dump.  */
+      if (i == 0x80)
+        continue;
+      if (!!WIFSIGNALED (i) + !!WIFEXITED (i) + !!WIFSTOPPED (i) != 1)
+        return 1;
+    }
+  i = WEXITSTATUS (i) + WSTOPSIG (i) + WTERMSIG (i);
+
+  switch (i)
+    {
+#if 0
+  /* Gnulib doesn't guarantee these, yet.  */
+    case WNOHANG:
+    case WUNTRACED:
+#endif
+      break;
+    }
+  return 0;
+}
diff --git a/gnulib-tests/test-termios.c b/gnulib-tests/test-termios.c
new file mode 100644
index 0000000..63223e6
--- /dev/null
+++ b/gnulib-tests/test-termios.c
@@ -0,0 +1,30 @@
+/* Test of <termios.h> substitute.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
+
+#include <config.h>
+
+#include <termios.h>
+
+/* Check that the types are all defined.  */
+pid_t t1;
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-thread_create.c b/gnulib-tests/test-thread_create.c
new file mode 100644
index 0000000..320d64a
--- /dev/null
+++ b/gnulib-tests/test-thread_create.c
@@ -0,0 +1,78 @@
+/* Test of gl_thread_create () macro.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include "glthread/thread.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "macros.h"
+
+static gl_thread_t main_thread_before;
+static gl_thread_t main_thread_after;
+static gl_thread_t worker_thread;
+
+static int dummy;
+static volatile int work_done;
+
+static void *
+worker_thread_func (void *arg)
+{
+  work_done = 1;
+  return &dummy;
+}
+
+int
+main ()
+{
+  main_thread_before = gl_thread_self ();
+
+  if (glthread_create (&worker_thread, worker_thread_func, NULL) == 0)
+    {
+      void *ret;
+
+      /* Check that gl_thread_self () has the same value before than after the
+         first call to gl_thread_create ().  */
+      main_thread_after = gl_thread_self ();
+      ASSERT (memcmp (&main_thread_before, &main_thread_after,
+                      sizeof (gl_thread_t))
+              == 0);
+
+      gl_thread_join (worker_thread, &ret);
+
+      /* Check the return value of the thread.  */
+      ASSERT (ret == &dummy);
+
+      /* Check that worker_thread_func () has finished executing.  */
+      ASSERT (work_done);
+
+      return 0;
+    }
+  else
+    {
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+      fputs ("glthread_create failed\n", stderr);
+      return 1;
+#else
+      fputs ("Skipping test: multithreading not enabled\n", stderr);
+      return 77;
+#endif
+    }
+}
diff --git a/gnulib-tests/test-thread_self.c b/gnulib-tests/test-thread_self.c
new file mode 100644
index 0000000..f0c302b
--- /dev/null
+++ b/gnulib-tests/test-thread_self.c
@@ -0,0 +1,39 @@
+/* Test of gl_thread_self () macro.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include "glthread/thread.h"
+
+gl_thread_t main_thread;
+
+int
+main ()
+{
+  /* Check that gl_thread_self () can be used with just $(LIBTHREAD), not
+     $(LIBMULTITHREAD), i.e. in libraries that are multithread-safe but don't
+     create threads themselves.  */
+  /* This is not the case on AIX with --enable-threads=isoc+posix, because in
+     this case, $(LIBTHREAD) is empty whereas $(LIBMULTITHREAD) is '-lpthread'.
+   */
+#if !defined _AIX
+  main_thread = gl_thread_self ();
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-time.c b/gnulib-tests/test-time.c
new file mode 100644
index 0000000..1587c28
--- /dev/null
+++ b/gnulib-tests/test-time.c
@@ -0,0 +1,41 @@
+/* Test of <time.h> substitute.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <time.h>
+
+#include "verify.h"
+
+/* Check that the types are all defined.  */
+struct timespec t1;
+#if 0
+/* POSIX:2008 does not require pid_t in <time.h> unconditionally, and indeed
+   it's missing on Mac OS X 10.5, FreeBSD 6.4, OpenBSD 4.9, mingw.  */
+pid_t t2;
+#endif
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-timespec.c b/gnulib-tests/test-timespec.c
new file mode 100644
index 0000000..3d4672c
--- /dev/null
+++ b/gnulib-tests/test-timespec.c
@@ -0,0 +1,167 @@
+/* Test timespec functions.
+   Copyright 2015-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#include <config.h>
+
+#include "timespec.h"
+
+#include "intprops.h"
+#include "macros.h"
+
+#include <stdbool.h>
+#include <limits.h>
+
+static struct { int s; int ns; } const prototype[] =
+  {
+    { INT_MIN, 0 },
+    { INT_MIN, 1 },
+    { INT_MIN, TIMESPEC_HZ - 1 },
+    { INT_MIN + 1, 0 },
+    { INT_MIN + 1, 1 },
+    { INT_MIN + 1, TIMESPEC_HZ - 1 },
+    { -1, 0 },
+    { -1, 1 },
+    { -1, TIMESPEC_HZ - 1 },
+    { 0, 0 },
+    { 0, 1 },
+    { 0, TIMESPEC_HZ - 1 },
+    { 1, 0 },
+    { 1, 1 },
+    { 1, TIMESPEC_HZ - 1 },
+    { 1234567890, 0 },
+    { 1234567890, 1 },
+    { 1234567890, TIMESPEC_HZ - 1 },
+    { INT_MAX - 1, 0 },
+    { INT_MAX - 1, 1 },
+    { INT_MAX - 1, TIMESPEC_HZ - 1 },
+    { INT_MAX, 0 },
+    { INT_MAX, 1 },
+    { INT_MAX, TIMESPEC_HZ - 1 },
+    { INT_MAX, 2 * TIMESPEC_HZ }
+  };
+enum { nprototypes = sizeof prototype / sizeof *prototype };
+
+static bool
+valid (struct timespec a)
+{
+  return 0 <= a.tv_nsec && a.tv_nsec < TIMESPEC_HZ;
+}
+
+static int
+sign (int i)
+{
+  return i < 0 ? -1 : 0 < i;
+}
+
+static int
+cmp (struct timespec a, struct timespec b)
+{
+  return sign (timespec_cmp (a, b));
+}
+
+static bool
+eq (struct timespec a, struct timespec b)
+{
+  return timespec_cmp (a, b) == 0;
+}
+
+static bool
+extremal (struct timespec a)
+{
+  return ((a.tv_sec == TYPE_MINIMUM (time_t) && a.tv_nsec == 0)
+          || (a.tv_sec == TYPE_MAXIMUM (time_t)
+              && a.tv_nsec == TIMESPEC_HZ - 1));
+}
+
+int
+main (void)
+{
+  int i, j, k;
+  struct timespec test[nprototypes + 1];
+  int ntests;
+  int computed_hz = 1;
+  struct timespec prevroundtrip;
+
+  test[0] = make_timespec (TYPE_MINIMUM (time_t), -1);
+  ntests = 1;
+  for (i = 0; i < nprototypes; i++)
+    {
+      int s = prototype[i].s;
+      if (TYPE_SIGNED (time_t) || 0 <= s)
+        {
+          time_t t = (s <= INT_MIN + 1 ? s - INT_MIN + TYPE_MINIMUM (time_t)
+                      : INT_MAX - 1 <= s ? s - INT_MAX + TYPE_MAXIMUM (time_t)
+                      : s);
+          test[ntests++] = make_timespec (t, prototype[i].ns);
+        }
+    }
+
+  for (i = 0; i < LOG10_TIMESPEC_HZ; i++)
+    computed_hz *= 10;
+  ASSERT (computed_hz == TIMESPEC_HZ);
+
+  for (i = 0; i < ntests; i++)
+    {
+      struct timespec a = test[i];
+
+      struct timespec roundtrip = dtotimespec (timespectod (a));
+      if (i != 0)
+        ASSERT (cmp (prevroundtrip, roundtrip) <= 0);
+      prevroundtrip = roundtrip;
+
+      ASSERT (sign (timespec_sign (a)) == cmp (a, make_timespec (0, 0)));
+
+      if (valid (a))
+        for (j = 0; j < ntests; j++)
+          {
+            struct timespec b = test[j];
+            if (valid (b))
+              {
+                struct timespec sum = timespec_add (a, b);
+                struct timespec diff = timespec_sub (a, b);
+                struct timespec rdiff = timespec_sub (b, a);
+                ASSERT (cmp (a, b) == sign (i - j));
+                ASSERT (eq (sum, timespec_add (b, a)));
+                if (! extremal (sum))
+                  {
+                    ASSERT (eq (a, timespec_sub (sum, b)));
+                    ASSERT (eq (b, timespec_sub (sum, a)));
+
+                    for (k = 0; k < ntests; k++)
+                      {
+                        struct timespec c = test[k];
+                        if (valid (c))
+                          {
+                            struct timespec sumbc = timespec_add (b, c);
+                            if (! extremal (sumbc))
+                              ASSERT (eq (timespec_add (a, sumbc),
+                                          timespec_add (sum, c)));
+                          }
+                      }
+                  }
+                if (! extremal (diff))
+                  ASSERT (eq (a, timespec_add (diff, b)));
+                if (! extremal (rdiff))
+                  ASSERT (eq (b, timespec_add (rdiff, a)));
+
+              }
+          }
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-tls.c b/gnulib-tests/test-tls.c
new file mode 100644
index 0000000..0a62efc
--- /dev/null
+++ b/gnulib-tests/test-tls.c
@@ -0,0 +1,538 @@
+/* Test of thread-local storage in multithreaded situations.
+   Copyright (C) 2005, 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.  */
+
+#include <config.h>
+
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+
+#if USE_ISOC_THREADS || USE_ISOC_AND_POSIX_THREADS
+# define TEST_ISOC_THREADS 1
+#endif
+#if USE_POSIX_THREADS
+# define TEST_POSIX_THREADS 1
+#endif
+#if USE_WINDOWS_THREADS
+# define TEST_WINDOWS_THREADS 1
+#endif
+
+/* Whether to help the scheduler through explicit yield().
+   Uncomment this to see if the operating system has a fair scheduler.  */
+#define EXPLICIT_YIELD 1
+
+/* Whether to print debugging messages.  */
+#define ENABLE_DEBUGGING 0
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "glthread/tls.h"
+#include "glthread/thread.h"
+#include "glthread/lock.h"
+#include "glthread/yield.h"
+
+#if HAVE_DECL_ALARM
+# include <signal.h>
+# include <unistd.h>
+#endif
+
+#if ENABLE_DEBUGGING
+# define dbgprintf printf
+#else
+# define dbgprintf if (0) printf
+#endif
+
+#if EXPLICIT_YIELD
+# define yield() gl_thread_yield ()
+#else
+# define yield()
+#endif
+
+static void
+perhaps_yield (void)
+{
+  /* This helps making the sequence of thread activations less predictable.  */
+  if ((((unsigned int) rand () >> 3) % 4) == 0)
+    yield ();
+}
+
+
+/* ----------------------- Test thread-local storage ----------------------- */
+
+/* Number of simultaneous threads.  */
+#define THREAD_COUNT 16
+
+/* Number of operations performed in each thread.  */
+#define REPEAT_COUNT 50000
+
+#define KEYS_COUNT 4
+
+static gl_tls_key_t mykeys[KEYS_COUNT];
+
+static void *
+worker_thread (void *arg)
+{
+  unsigned int id = (unsigned int) (uintptr_t) arg;
+  int i, j, repeat;
+  unsigned int values[KEYS_COUNT];
+
+  dbgprintf ("Worker %p started\n", gl_thread_self_pointer ());
+
+  /* Initialize the per-thread storage.  */
+  for (i = 0; i < KEYS_COUNT; i++)
+    {
+      values[i] = (((unsigned int) rand () >> 3) % 1000000) * THREAD_COUNT + id;
+      /* Hopefully no arithmetic overflow.  */
+      if ((values[i] % THREAD_COUNT) != id)
+        abort ();
+    }
+  perhaps_yield ();
+
+  /* Verify that the initial value is NULL.  */
+  dbgprintf ("Worker %p before initial verify\n", gl_thread_self_pointer ());
+  for (i = 0; i < KEYS_COUNT; i++)
+    if (gl_tls_get (mykeys[i]) != NULL)
+      abort ();
+  dbgprintf ("Worker %p after  initial verify\n", gl_thread_self_pointer ());
+  perhaps_yield ();
+
+  /* Initialize the per-thread storage.  */
+  dbgprintf ("Worker %p before first tls_set\n", gl_thread_self_pointer ());
+  for (i = 0; i < KEYS_COUNT; i++)
+    {
+      unsigned int *ptr = (unsigned int *) malloc (sizeof (unsigned int));
+      *ptr = values[i];
+      gl_tls_set (mykeys[i], ptr);
+    }
+  dbgprintf ("Worker %p after  first tls_set\n", gl_thread_self_pointer ());
+  perhaps_yield ();
+
+  /* Shuffle around the pointers.  */
+  for (repeat = REPEAT_COUNT; repeat > 0; repeat--)
+    {
+      dbgprintf ("Worker %p doing value swapping\n", gl_thread_self_pointer ());
+      i = ((unsigned int) rand () >> 3) % KEYS_COUNT;
+      j = ((unsigned int) rand () >> 3) % KEYS_COUNT;
+      if (i != j)
+        {
+          void *vi = gl_tls_get (mykeys[i]);
+          void *vj = gl_tls_get (mykeys[j]);
+
+          gl_tls_set (mykeys[i], vj);
+          gl_tls_set (mykeys[j], vi);
+        }
+      perhaps_yield ();
+    }
+
+  /* Verify that all the values are from this thread.  */
+  dbgprintf ("Worker %p before final verify\n", gl_thread_self_pointer ());
+  for (i = 0; i < KEYS_COUNT; i++)
+    if ((*(unsigned int *) gl_tls_get (mykeys[i]) % THREAD_COUNT) != id)
+      abort ();
+  dbgprintf ("Worker %p after  final verify\n", gl_thread_self_pointer ());
+  perhaps_yield ();
+
+  dbgprintf ("Worker %p dying.\n", gl_thread_self_pointer ());
+  return NULL;
+}
+
+static void
+test_tls (void)
+{
+  int pass, i;
+
+  for (pass = 0; pass < 2; pass++)
+    {
+      gl_thread_t threads[THREAD_COUNT];
+
+      if (pass == 0)
+        for (i = 0; i < KEYS_COUNT; i++)
+          gl_tls_key_init (mykeys[i], free);
+      else
+        for (i = KEYS_COUNT - 1; i >= 0; i--)
+          gl_tls_key_init (mykeys[i], free);
+
+      /* Spawn the threads.  */
+      for (i = 0; i < THREAD_COUNT; i++)
+        threads[i] = gl_thread_create (worker_thread, (void *) (uintptr_t) i);
+
+      /* Wait for the threads to terminate.  */
+      for (i = 0; i < THREAD_COUNT; i++)
+        gl_thread_join (threads[i], NULL);
+
+      for (i = 0; i < KEYS_COUNT; i++)
+        gl_tls_key_destroy (mykeys[i]);
+    }
+}
+
+#undef KEYS_COUNT
+#undef REPEAT_COUNT
+#undef THREAD_COUNT
+
+
+/* --------------- Test thread-local storage with destructors --------------- */
+
+/* Number of simultaneous threads.  */
+#define THREAD_COUNT 10
+
+/* Number of keys to allocate in each thread.  */
+#define KEYS_COUNT 10
+
+gl_lock_define_initialized(static, sumlock)
+static uintptr_t sum;
+
+static void
+inc_sum (uintptr_t value)
+{
+  gl_lock_lock (sumlock);
+  sum += value;
+  gl_lock_unlock (sumlock);
+}
+
+static void
+destructor0 (void *value)
+{
+  if ((((uintptr_t) value - 1) % 10) != 0)
+    abort ();
+  inc_sum ((uintptr_t) value);
+}
+
+static void
+destructor1 (void *value)
+{
+  if ((((uintptr_t) value - 1) % 10) != 1)
+    abort ();
+  inc_sum ((uintptr_t) value);
+}
+
+static void
+destructor2 (void *value)
+{
+  if ((((uintptr_t) value - 1) % 10) != 2)
+    abort ();
+  inc_sum ((uintptr_t) value);
+}
+
+static void
+destructor3 (void *value)
+{
+  if ((((uintptr_t) value - 1) % 10) != 3)
+    abort ();
+  inc_sum ((uintptr_t) value);
+}
+
+static void
+destructor4 (void *value)
+{
+  if ((((uintptr_t) value - 1) % 10) != 4)
+    abort ();
+  inc_sum ((uintptr_t) value);
+}
+
+static void
+destructor5 (void *value)
+{
+  if ((((uintptr_t) value - 1) % 10) != 5)
+    abort ();
+  inc_sum ((uintptr_t) value);
+}
+
+static void
+destructor6 (void *value)
+{
+  if ((((uintptr_t) value - 1) % 10) != 6)
+    abort ();
+  inc_sum ((uintptr_t) value);
+}
+
+static void
+destructor7 (void *value)
+{
+  if ((((uintptr_t) value - 1) % 10) != 7)
+    abort ();
+  inc_sum ((uintptr_t) value);
+}
+
+static void
+destructor8 (void *value)
+{
+  if ((((uintptr_t) value - 1) % 10) != 8)
+    abort ();
+  inc_sum ((uintptr_t) value);
+}
+
+static void
+destructor9 (void *value)
+{
+  if ((((uintptr_t) value - 1) % 10) != 9)
+    abort ();
+  inc_sum ((uintptr_t) value);
+}
+
+static void (*destructor_table[10]) (void *) =
+  {
+    destructor0,
+    destructor1,
+    destructor2,
+    destructor3,
+    destructor4,
+    destructor5,
+    destructor6,
+    destructor7,
+    destructor8,
+    destructor9
+  };
+
+static gl_tls_key_t dtorcheck_keys[THREAD_COUNT][KEYS_COUNT];
+
+/* Worker thread that uses destructors that verify that the destructor belongs
+   to the right thread.  */
+static void *
+dtorcheck1_thread (void *arg)
+{
+  unsigned int id = (unsigned int) (uintptr_t) arg;
+  gl_tls_key_t *keys = dtorcheck_keys[id]; /* an array of KEYS_COUNT keys */
+  int i;
+
+  for (i = 0; i < KEYS_COUNT; i++)
+    gl_tls_key_init (keys[i], destructor_table[i]);
+
+  for (i = 0; i < KEYS_COUNT; i++)
+    gl_tls_set (keys[i], (void *) (uintptr_t) (10 * id + i + 1));
+
+  return NULL;
+}
+
+static void
+test_tls_dtorcheck1 (void)
+{
+  gl_thread_t threads[THREAD_COUNT];
+  unsigned int id;
+  int i;
+  uintptr_t expected_sum;
+
+  sum = 0;
+
+  /* Spawn the threads.  */
+  for (id = 0; id < THREAD_COUNT; id++)
+    threads[id] = gl_thread_create (dtorcheck1_thread, (void *) (uintptr_t) id);
+
+  /* Wait for the threads to terminate.  */
+  for (id = 0; id < THREAD_COUNT; id++)
+    gl_thread_join (threads[id], NULL);
+
+  /* Clean up the keys.  */
+  for (id = 0; id < THREAD_COUNT; id++)
+    for (i = 0; i < KEYS_COUNT; i++)
+      gl_tls_key_destroy (dtorcheck_keys[id][i]);
+
+  /* Check that the destructor was invoked for each key.  */
+  expected_sum = 10 * KEYS_COUNT * (THREAD_COUNT * (THREAD_COUNT - 1) / 2)
+                 + THREAD_COUNT * (KEYS_COUNT * (KEYS_COUNT - 1) / 2)
+                 + THREAD_COUNT * KEYS_COUNT;
+  if (sum != expected_sum)
+    abort ();
+}
+
+/* Worker thread that uses destructors that verify that the destructor belongs
+   to the right key allocated within the thread.  */
+static void *
+dtorcheck2_thread (void *arg)
+{
+  unsigned int id = (unsigned int) (uintptr_t) arg;
+  gl_tls_key_t *keys = dtorcheck_keys[id]; /* an array of KEYS_COUNT keys */
+  int i;
+
+  for (i = 0; i < KEYS_COUNT; i++)
+    gl_tls_key_init (keys[i], destructor_table[id]);
+
+  for (i = 0; i < KEYS_COUNT; i++)
+    gl_tls_set (keys[i], (void *) (uintptr_t) (10 * i + id + 1));
+
+  return NULL;
+}
+
+static void
+test_tls_dtorcheck2 (void)
+{
+  gl_thread_t threads[THREAD_COUNT];
+  unsigned int id;
+  int i;
+  uintptr_t expected_sum;
+
+  sum = 0;
+
+  /* Spawn the threads.  */
+  for (id = 0; id < THREAD_COUNT; id++)
+    threads[id] = gl_thread_create (dtorcheck2_thread, (void *) (uintptr_t) id);
+
+  /* Wait for the threads to terminate.  */
+  for (id = 0; id < THREAD_COUNT; id++)
+    gl_thread_join (threads[id], NULL);
+
+  /* Clean up the keys.  */
+  for (id = 0; id < THREAD_COUNT; id++)
+    for (i = 0; i < KEYS_COUNT; i++)
+      gl_tls_key_destroy (dtorcheck_keys[id][i]);
+
+  /* Check that the destructor was invoked for each key.  */
+  expected_sum = 10 * THREAD_COUNT * (KEYS_COUNT * (KEYS_COUNT - 1) / 2)
+                 + KEYS_COUNT * (THREAD_COUNT * (THREAD_COUNT - 1) / 2)
+                 + THREAD_COUNT * KEYS_COUNT;
+  if (sum != expected_sum)
+    abort ();
+}
+
+#undef KEYS_COUNT
+#undef THREAD_COUNT
+
+
+/* --- Test thread-local storage with with races between init and destroy --- */
+
+/* Number of simultaneous threads.  */
+#define THREAD_COUNT 10
+
+/* Number of keys to allocate in each thread.  */
+#define KEYS_COUNT 10
+
+/* Number of times to destroy and reallocate a key in each thread.  */
+#define REPEAT_COUNT 100000
+
+static gl_tls_key_t racecheck_keys[THREAD_COUNT][KEYS_COUNT];
+
+/* Worker thread that does many destructions and reallocations of keys, and also
+   uses destructors that verify that the destructor belongs to the right key.  */
+static void *
+racecheck_thread (void *arg)
+{
+  unsigned int id = (unsigned int) (uintptr_t) arg;
+  gl_tls_key_t *keys = racecheck_keys[id]; /* an array of KEYS_COUNT keys */
+  int repeat;
+  int i;
+
+  dbgprintf ("Worker %p started\n", gl_thread_self_pointer ());
+
+  for (i = 0; i < KEYS_COUNT; i++)
+    {
+      gl_tls_key_init (keys[i], destructor_table[i]);
+      gl_tls_set (keys[i], (void *) (uintptr_t) (10 * id + i + 1));
+    }
+
+  for (repeat = REPEAT_COUNT; repeat > 0; repeat--)
+    {
+      i = ((unsigned int) rand () >> 3) % KEYS_COUNT;
+      dbgprintf ("Worker %p reallocating key %d\n", gl_thread_self_pointer (), i);
+      gl_tls_key_destroy (keys[i]);
+      gl_tls_key_init (keys[i], destructor_table[i]);
+      gl_tls_set (keys[i], (void *) (uintptr_t) (10 * id + i + 1));
+    }
+
+  dbgprintf ("Worker %p dying.\n", gl_thread_self_pointer ());
+  return NULL;
+}
+
+static void
+test_tls_racecheck (void)
+{
+  gl_thread_t threads[THREAD_COUNT];
+  unsigned int id;
+  int i;
+  uintptr_t expected_sum;
+
+  sum = 0;
+
+  /* Spawn the threads.  */
+  for (id = 0; id < THREAD_COUNT; id++)
+    threads[id] = gl_thread_create (racecheck_thread, (void *) (uintptr_t) id);
+
+  /* Wait for the threads to terminate.  */
+  for (id = 0; id < THREAD_COUNT; id++)
+    gl_thread_join (threads[id], NULL);
+
+  /* Clean up the keys.  */
+  for (id = 0; id < THREAD_COUNT; id++)
+    for (i = 0; i < KEYS_COUNT; i++)
+      gl_tls_key_destroy (racecheck_keys[id][i]);
+
+  /* Check that the destructor was invoked for each key.  */
+  expected_sum = 10 * KEYS_COUNT * (THREAD_COUNT * (THREAD_COUNT - 1) / 2)
+                 + THREAD_COUNT * (KEYS_COUNT * (KEYS_COUNT - 1) / 2)
+                 + THREAD_COUNT * KEYS_COUNT;
+  if (sum != expected_sum)
+    abort ();
+}
+
+#undef REPEAT_COUNT
+#undef KEYS_COUNT
+#undef THREAD_COUNT
+
+
+/* -------------------------------------------------------------------------- */
+
+int
+main ()
+{
+#if HAVE_DECL_ALARM
+  /* Declare failure if test takes too long, by using default abort
+     caused by SIGALRM.  */
+  int alarm_value = 600;
+  signal (SIGALRM, SIG_DFL);
+  alarm (alarm_value);
+#endif
+
+  printf ("Starting test_tls ..."); fflush (stdout);
+  test_tls ();
+  printf (" OK\n"); fflush (stdout);
+
+  printf ("Starting test_tls_dtorcheck1 ..."); fflush (stdout);
+  test_tls_dtorcheck1 ();
+  printf (" OK\n"); fflush (stdout);
+
+  printf ("Starting test_tls_dtorcheck2 ..."); fflush (stdout);
+  test_tls_dtorcheck2 ();
+  printf (" OK\n"); fflush (stdout);
+
+  /* This test hangs with the mingw-w64 winpthreads.  */
+#if (defined _WIN32 && ! defined __CYGWIN__) && TEST_POSIX_THREADS
+  fputs ("Skipping test: it is known to hang with the mingw-w64 winpthreads.\n",
+         stderr);
+  exit (77);
+#else
+  printf ("Starting test_tls_racecheck ..."); fflush (stdout);
+  test_tls_racecheck ();
+  printf (" OK\n"); fflush (stdout);
+#endif
+
+  return 0;
+}
+
+#else
+
+/* No multithreading available.  */
+
+#include <stdio.h>
+
+int
+main ()
+{
+  fputs ("Skipping test: multithreading not enabled\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/gnulib-tests/test-u64.c b/gnulib-tests/test-u64.c
new file mode 100644
index 0000000..d7dc5b8
--- /dev/null
+++ b/gnulib-tests/test-u64.c
@@ -0,0 +1,47 @@
+/* Test of <u64.h>
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson <simon@josefsson.org>, 2009.  */
+
+#include <config.h>
+
+#include <u64.h>
+
+int
+main (void)
+{
+  u64 i = u64init (42, 4711);
+  u64 j, k, l;
+
+  j = u64hilo (42, 4711);
+
+  if (u64lt (i, j) || u64lt (j, i))
+    return 1;
+
+  i = u64hilo (0, 42);
+  j = u64hilo (0, 43);
+
+  if (!u64lt (i, j))
+    return 1;
+
+  k = u64plus (i, j);
+  l = u64hilo (0, 42 + 43);
+
+  if (u64lt (k, l) || u64lt (l, k))
+    return 1;
+
+  return 0;
+}
diff --git a/gnulib-tests/test-uname.c b/gnulib-tests/test-uname.c
new file mode 100644
index 0000000..96fd675
--- /dev/null
+++ b/gnulib-tests/test-uname.c
@@ -0,0 +1,64 @@
+/* Test of system information.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+#include <sys/utsname.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (uname, int, (struct utsname *));
+
+#include <stdio.h>
+#include <string.h>
+
+#include "macros.h"
+
+
+/* This program can be called with no arguments, then it performs a unit
+   test.  Or it can be called with 1 argument, then it prints the uname
+   contents to standard output.  */
+
+int
+main (int argc, char *argv[])
+{
+  struct utsname buf;
+
+  memset (&buf, '?', sizeof (buf));
+
+  ASSERT (uname (&buf) >= 0);
+
+  /* Verify that every field's value is NUL terminated.  */
+  ASSERT (strlen (buf.sysname) < sizeof (buf.sysname));
+  ASSERT (strlen (buf.nodename) < sizeof (buf.nodename));
+  ASSERT (strlen (buf.release) < sizeof (buf.release));
+  ASSERT (strlen (buf.version) < sizeof (buf.version));
+  ASSERT (strlen (buf.machine) < sizeof (buf.machine));
+
+  if (argc > 1)
+    {
+      /* Show the result.  */
+
+      printf ("uname -n = nodename       = %s\n", buf.nodename);
+      printf ("uname -s = sysname        = %s\n", buf.sysname);
+      printf ("uname -r = release        = %s\n", buf.release);
+      printf ("uname -v = version        = %s\n", buf.version);
+      printf ("uname -m = machine or cpu = %s\n", buf.machine);
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-unistd.c b/gnulib-tests/test-unistd.c
new file mode 100644
index 0000000..5ba7d5b
--- /dev/null
+++ b/gnulib-tests/test-unistd.c
@@ -0,0 +1,56 @@
+/* Test of <unistd.h> substitute.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "verify.h"
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+/* Check that the various SEEK_* macros are defined.  */
+int sk[] = { SEEK_CUR, SEEK_END, SEEK_SET };
+
+/* Check that the various *_FILENO macros are defined.  */
+#if ! (defined STDIN_FILENO                                     \
+       && (STDIN_FILENO + STDOUT_FILENO + STDERR_FILENO == 3))
+missing or broken *_FILENO macros
+#endif
+
+/* Check that the types are all defined.  */
+size_t t1;
+ssize_t t2;
+#ifdef TODO /* Not implemented in gnulib yet */
+uid_t t3;
+gid_t t4;
+#endif
+off_t t5;
+pid_t t6;
+#ifdef TODO
+useconds_t t7;
+intptr_t t8;
+#endif
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-unlink.c b/gnulib-tests/test-unlink.c
new file mode 100644
index 0000000..5689185
--- /dev/null
+++ b/gnulib-tests/test-unlink.c
@@ -0,0 +1,49 @@
+/* Tests of unlink.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (unlink, int, (char const *));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#include "unlinkdir.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-unlink.t"
+
+#include "test-unlink.h"
+
+int
+main (void)
+{
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_unlink_func (unlink, true);
+}
diff --git a/gnulib-tests/test-unlink.h b/gnulib-tests/test-unlink.h
new file mode 100644
index 0000000..98c9a4f
--- /dev/null
+++ b/gnulib-tests/test-unlink.h
@@ -0,0 +1,86 @@
+/* Tests of unlink.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+/* This file is designed to test both unlink(n) and
+   unlinkat(AT_FDCWD,n,0).  FUNC is the function to test.  Assumes
+   that BASE and ASSERT are already defined, and that appropriate
+   headers are already included.  If PRINT, then warn before returning
+   status 77 when symlinks are unsupported.  */
+
+static int
+test_unlink_func (int (*func) (char const *name), bool print)
+{
+  /* Setup.  */
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  ASSERT (close (creat (BASE "dir/file", 0600)) == 0);
+
+  /* Basic error conditions.  */
+  errno = 0;
+  ASSERT (func ("") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (BASE "nosuch") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (BASE "nosuch/") == -1);
+  ASSERT (errno == ENOENT);
+  /* Resulting errno after directories is rather varied across
+     implementations (EPERM, EINVAL, EACCES, EBUSY, EISDIR, ENOTSUP);
+     however, we must be careful to not attempt unlink on a directory
+     unless we know it must fail.  */
+  if (cannot_unlink_dir ())
+    {
+      ASSERT (func (".") == -1);
+      ASSERT (func ("..") == -1);
+      ASSERT (func ("/") == -1);
+      ASSERT (func (BASE "dir") == -1);
+      ASSERT (mkdir (BASE "dir1", 0700) == 0);
+      ASSERT (func (BASE "dir1") == -1);
+      ASSERT (rmdir (BASE "dir1") == 0);
+    }
+  errno = 0;
+  ASSERT (func (BASE "dir/file/") == -1);
+  ASSERT (errno == ENOTDIR);
+
+  /* Test symlink behavior.  Specifying trailing slash will attempt
+     unlink of a directory, so only attempt it if we know it must
+     fail.  */
+  if (symlink (BASE "dir", BASE "link") != 0)
+    {
+      ASSERT (func (BASE "dir/file") == 0);
+      ASSERT (rmdir (BASE "dir") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  if (cannot_unlink_dir ())
+    ASSERT (func (BASE "link/") == -1);
+  ASSERT (func (BASE "link") == 0);
+  ASSERT (symlink (BASE "dir/file", BASE "link") == 0);
+  errno = 0;
+  ASSERT (func (BASE "link/") == -1);
+  ASSERT (errno == ENOTDIR);
+  /* Order here proves unlink of a symlink does not follow through to
+     the file.  */
+  ASSERT (func (BASE "link") == 0);
+  ASSERT (func (BASE "dir/file") == 0);
+  ASSERT (rmdir (BASE "dir") == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-unlinkat.c b/gnulib-tests/test-unlinkat.c
new file mode 100644
index 0000000..80e5e54
--- /dev/null
+++ b/gnulib-tests/test-unlinkat.c
@@ -0,0 +1,95 @@
+/* Tests of unlinkat.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (unlinkat, int, (int, char const *, int));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+#include "unlinkdir.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-unlinkat.t"
+
+#include "test-rmdir.h"
+#include "test-unlink.h"
+
+static int dfd = AT_FDCWD;
+
+/* Wrapper around unlinkat to test rmdir behavior.  */
+static int
+rmdirat (char const *name)
+{
+  return unlinkat (dfd, name, AT_REMOVEDIR);
+}
+
+/* Wrapper around unlinkat to test unlink behavior.  */
+static int
+unlinker (char const *name)
+{
+  return unlinkat (dfd, name, 0);
+}
+
+int
+main (int argc _GL_UNUSED, char *argv[])
+{
+  /* FIXME: Add tests of fd other than ".".  */
+  int result1;
+  int result2;
+
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (unlinkat (-1, "foo", 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (unlinkat (99, "foo", 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  result1 = test_rmdir_func (rmdirat, false);
+  result2 = test_unlink_func (unlinker, false);
+  ASSERT (result1 == result2);
+  dfd = open (".", O_RDONLY);
+  ASSERT (0 <= dfd);
+  result2 = test_rmdir_func (rmdirat, false);
+  ASSERT (result1 == result2);
+  result2 = test_unlink_func (unlinker, false);
+  ASSERT (result1 == result2);
+  ASSERT (close (dfd) == 0);
+  if (result1 == 77)
+    fputs ("skipping test: symlinks not supported on this file system\n",
+           stderr);
+  return result1;
+}
diff --git a/gnulib-tests/test-unsetenv.c b/gnulib-tests/test-unsetenv.c
new file mode 100644
index 0000000..f912e79
--- /dev/null
+++ b/gnulib-tests/test-unsetenv.c
@@ -0,0 +1,61 @@
+/* Tests of unsetenv.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (unsetenv, int, (char const *));
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  char entry[] = "b=2";
+
+  /* Test removal when multiple entries present.  */
+  ASSERT (putenv ((char *) "a=1") == 0);
+  ASSERT (putenv (entry) == 0);
+  entry[0] = 'a'; /* Unspecified what getenv("a") would be at this point.  */
+  ASSERT (unsetenv ("a") == 0); /* Both entries will be removed.  */
+  ASSERT (getenv ("a") == NULL);
+  ASSERT (unsetenv ("a") == 0);
+
+  /* Required to fail with EINVAL.  */
+  errno = 0;
+  ASSERT (unsetenv ("") == -1);
+  ASSERT (errno == EINVAL);
+  errno = 0;
+  ASSERT (unsetenv ("a=b") == -1);
+  ASSERT (errno == EINVAL);
+#if 0
+  /* glibc and gnulib's implementation guarantee this, but POSIX no
+     longer requires it: http://austingroupbugs.net/view.php?id=185  */
+  errno = 0;
+  ASSERT (unsetenv (NULL) == -1);
+  ASSERT (errno == EINVAL);
+#endif
+
+  return 0;
+}
diff --git a/gnulib-tests/test-update-copyright.sh b/gnulib-tests/test-update-copyright.sh
new file mode 100755
index 0000000..adba779
--- /dev/null
+++ b/gnulib-tests/test-update-copyright.sh
@@ -0,0 +1,561 @@
+#!/bin/sh
+# Test suite for update-copyright.
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+diffout=`diff -u /dev/null /dev/null 2>&1`
+if test x"$diffout" = x"" && test $? -eq 0; then
+  compare() { diff -u "$@"; }
+else
+  compare() { cmp "$@"; }
+fi
+
+# Ensure the update-copyright program gets found.
+PATH=$abs_aux_dir:$PATH
+export PATH
+
+TMP_BASE=update-copyright.test
+trap 'rm -f $TMP_BASE*' 0 1 2 3 15
+
+## --------------------------------- ##
+## Skip if user does not have perl.  ##
+## --------------------------------- ##
+
+TMP=$TMP_BASE
+s=$TMP-script
+cat <<\EOF > $s
+#!/bin/sh
+#! -*-perl-*-
+# This is a prologue that allows to run a perl script as an executable
+# on systems that are compliant to a POSIX version before POSIX:2017.
+# On such systems, the usual invocation of an executable through execlp()
+# or execvp() fails with ENOEXEC if it is a script that does not start
+# with a #! line.  The script interpreter mentioned in the #! line has
+# to be /bin/sh, because on GuixSD systems that is the only program that
+# has a fixed file name.  The second line is essential for perl and is
+# also useful for editing this file in Emacs.  The next two lines below
+# are valid code in both sh and perl.  When executed by sh, they re-execute
+# the script through the perl program found in $PATH.  The '-x' option
+# is essential as well; without it, perl would re-execute the script
+# through /bin/sh.  When executed by  perl, the next two lines are a no-op.
+eval 'exec perl -wSx -pi "$0" "$@"'
+     if 0;
+
+s/a/b/
+EOF
+chmod a+x $s
+echo a > $TMP-in
+./$s $TMP-in 2>/dev/null && test b = "`cat $TMP-in 2>/dev/null`" ||
+  {
+    printf '%s\n' "$0: skipping this test;" \
+      'your system has insufficient support for Perl' 1>&2
+    exit 77
+  }
+
+# Skip this test if Perl is too old.  FIXME: 5.8.0 is just a guess.
+# We have a report that 5.6.1 is inadequate and that 5.8.0 works.
+perl -e 'require 5.8.0' || {
+  echo '$0: skipping this test; Perl version is too old' 1>&2
+  exit 77
+}
+
+# Do not let a different envvar setting perturb results.
+UPDATE_COPYRIGHT_MAX_LINE_LENGTH=72
+export UPDATE_COPYRIGHT_MAX_LINE_LENGTH
+
+## ----------------------------- ##
+## Examples from documentation.  ##
+## ----------------------------- ##
+
+TMP=$TMP_BASE-ex
+cat > $TMP.1 <<EOF
+Copyright @copyright{} 1990-2005, 2007-2009 Free Software
+Foundation, Inc.
+EOF
+cat > $TMP.2 <<EOF
+# Copyright (C) 1990-2005, 2007-2009 Free Software
+# Foundation, Inc.
+EOF
+cat > $TMP.3 <<EOF
+/*
+ * Copyright &copy; 90,2005,2007-2009
+ * Free Software Foundation, Inc.
+ */
+EOF
+cat > $TMP.4 <<EOF
+## Copyright (C) 1990-2005, 2007-2009 Free Software
+#  Foundation, Inc.
+EOF
+cat > $TMP.5 <<EOF
+Copyright (C) 1990-2005, 2007-2009 Acme, Inc.
+EOF
+cat > $TMP.6 <<EOF
+## Copyright (C) 1990-2005, 2007-2009 Free Software
+#  Foundation, Inc.
+
+Copyright (C) 1990-2005, 2007-2009 Free Software Foundation,
+Inc.
+EOF
+cat > $TMP.7 <<EOF
+Copyright (C) 1990-2005, 2007-2009 Acme, Inc.
+
+# Copyright (C) 1990-2005, 2007-2009 Free Software
+# Foundation, Inc.
+EOF
+
+UPDATE_COPYRIGHT_YEAR=2009 \
+  update-copyright $TMP.? 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare - $TMP-stderr <<EOF || exit 1
+$TMP.4: warning: copyright statement not found
+$TMP.5: warning: copyright statement not found
+EOF
+compare - $TMP.1 <<EOF || exit 1
+Copyright @copyright{} 1990-2005, 2007-2009 Free Software
+Foundation, Inc.
+EOF
+compare - $TMP.2 <<EOF || exit 1
+# Copyright (C) 1990-2005, 2007-2009 Free Software
+# Foundation, Inc.
+EOF
+compare - $TMP.3 <<EOF || exit 1
+/*
+ * Copyright &copy; 90,2005,2007-2009
+ * Free Software Foundation, Inc.
+ */
+EOF
+compare - $TMP.4 <<EOF || exit 1
+## Copyright (C) 1990-2005, 2007-2009 Free Software
+#  Foundation, Inc.
+EOF
+compare - $TMP.5 <<EOF || exit 1
+Copyright (C) 1990-2005, 2007-2009 Acme, Inc.
+EOF
+compare - $TMP.6 <<EOF || exit 1
+## Copyright (C) 1990-2005, 2007-2009 Free Software
+#  Foundation, Inc.
+
+Copyright (C) 1990-2005, 2007-2009 Free Software Foundation,
+Inc.
+EOF
+compare - $TMP.7 <<EOF || exit 1
+Copyright (C) 1990-2005, 2007-2009 Acme, Inc.
+
+# Copyright (C) 1990-2005, 2007-2009 Free Software
+# Foundation, Inc.
+EOF
+
+UPDATE_COPYRIGHT_YEAR=2010 UPDATE_COPYRIGHT_USE_INTERVALS=1 \
+  update-copyright $TMP.? 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare - $TMP-stderr <<EOF || exit 1
+$TMP.4: warning: copyright statement not found
+$TMP.5: warning: copyright statement not found
+EOF
+compare - $TMP.1 <<EOF || exit 1
+Copyright @copyright{} 1990-2005, 2007-2010 Free Software Foundation,
+Inc.
+EOF
+compare - $TMP.2 <<EOF || exit 1
+# Copyright (C) 1990-2005, 2007-2010 Free Software Foundation, Inc.
+EOF
+compare - $TMP.3 <<EOF || exit 1
+/*
+ * Copyright &copy; 1990, 2005, 2007-2010 Free Software Foundation, Inc.
+ */
+EOF
+compare - $TMP.4 <<EOF || exit 1
+## Copyright (C) 1990-2005, 2007-2009 Free Software
+#  Foundation, Inc.
+EOF
+compare - $TMP.5 <<EOF || exit 1
+Copyright (C) 1990-2005, 2007-2009 Acme, Inc.
+EOF
+compare - $TMP.6 <<EOF || exit 1
+## Copyright (C) 1990-2005, 2007-2009 Free Software
+#  Foundation, Inc.
+
+Copyright (C) 1990-2005, 2007-2010 Free Software Foundation, Inc.
+EOF
+compare - $TMP.7 <<EOF || exit 1
+Copyright (C) 1990-2005, 2007-2009 Acme, Inc.
+
+# Copyright (C) 1990-2005, 2007-2010 Free Software Foundation, Inc.
+EOF
+
+UPDATE_COPYRIGHT_YEAR=2010 UPDATE_COPYRIGHT_FORCE=1 \
+  update-copyright $TMP.? 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare - $TMP-stderr <<EOF || exit 1
+$TMP.4: warning: copyright statement not found
+$TMP.5: warning: copyright statement not found
+EOF
+compare - $TMP.1 <<EOF || exit 1
+Copyright @copyright{} 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
+Free Software Foundation, Inc.
+EOF
+compare - $TMP.2 <<EOF || exit 1
+# Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+# 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010 Free
+# Software Foundation, Inc.
+EOF
+compare - $TMP.3 <<EOF || exit 1
+/*
+ * Copyright &copy; 1990, 2005, 2007, 2008, 2009, 2010 Free Software
+ * Foundation, Inc.
+ */
+EOF
+compare - $TMP.4 <<EOF || exit 1
+## Copyright (C) 1990-2005, 2007-2009 Free Software
+#  Foundation, Inc.
+EOF
+compare - $TMP.5 <<EOF || exit 1
+Copyright (C) 1990-2005, 2007-2009 Acme, Inc.
+EOF
+compare - $TMP.6 <<EOF || exit 1
+## Copyright (C) 1990-2005, 2007-2009 Free Software
+#  Foundation, Inc.
+
+Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010 Free
+Software Foundation, Inc.
+EOF
+compare - $TMP.7 <<EOF || exit 1
+Copyright (C) 1990-2005, 2007-2009 Acme, Inc.
+
+# Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+# 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010 Free
+# Software Foundation, Inc.
+EOF
+
+rm $TMP*
+
+## -------------- ##
+## Current year.  ##
+## -------------- ##
+
+TMP=$TMP_BASE-current-year
+YEAR=`date +%Y`
+cat > $TMP <<EOF
+'\" Copyright (C) 2006
+'\" Free Software Foundation,
+'\" Inc.
+EOF
+update-copyright $TMP 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare /dev/null $TMP-stderr || exit 1
+compare - $TMP <<EOF || exit 1
+'\" Copyright (C) 2006, $YEAR Free Software Foundation, Inc.
+EOF
+UPDATE_COPYRIGHT_USE_INTERVALS=1 \
+  update-copyright $TMP 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare /dev/null $TMP-stderr || exit 1
+compare - $TMP <<EOF || exit 1
+'\" Copyright (C) 2006, $YEAR Free Software Foundation, Inc.
+EOF
+rm $TMP*
+
+## ------------------ ##
+## Surrounding text.  ##
+## ------------------ ##
+
+TMP=$TMP_BASE-surrounding-text
+cat > $TMP <<EOF
+    Undisturbed text.
+dnl Undisturbed text.
+dnl Copyright (C) 89
+dnl Free Software Foundation, Inc.
+dnl   Undisturbed text.
+EOF
+UPDATE_COPYRIGHT_YEAR=2010 \
+  update-copyright $TMP 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare /dev/null $TMP-stderr || exit 1
+compare - $TMP <<EOF || exit 1
+    Undisturbed text.
+dnl Undisturbed text.
+dnl Copyright (C) 1989, 2010 Free Software Foundation, Inc.
+dnl   Undisturbed text.
+EOF
+rm $TMP*
+
+## --------------- ##
+## Widest prefix.  ##
+## --------------- ##
+
+TMP=$TMP_BASE-widest-prefix
+cat > $TMP <<EOF
+#### Copyright (C) 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985,
+#### 1986, 1987, 1988, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+#### 2008 Free Software Foundation, Inc.
+EOF
+UPDATE_COPYRIGHT_YEAR=2010 \
+  update-copyright $TMP 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare /dev/null $TMP-stderr || exit 1
+compare - $TMP <<EOF || exit 1
+#### Copyright (C) 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984,
+#### 1985, 1986, 1987, 1988, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+#### 2006, 2007, 2008, 2010 Free Software Foundation, Inc.
+EOF
+UPDATE_COPYRIGHT_YEAR=2011 UPDATE_COPYRIGHT_USE_INTERVALS=1 \
+  update-copyright $TMP 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare /dev/null $TMP-stderr || exit 1
+compare - $TMP <<EOF || exit 1
+#### Copyright (C) 1976-1988, 1999-2008, 2010-2011 Free Software
+#### Foundation, Inc.
+EOF
+rm $TMP*
+
+## ------------------- ##
+## Prefix too large.  ##
+## ------------------- ##
+
+TMP=$TMP_BASE-prefix-too-large
+cat > $TMP <<EOF
+####  Copyright (C) 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985,
+####  1986, 1987, 1988, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+####  2008 Free Software Foundation, Inc.
+EOF
+UPDATE_COPYRIGHT_YEAR=2010 \
+  update-copyright $TMP 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare - $TMP-stderr <<EOF || exit 1
+$TMP: warning: copyright statement not found
+EOF
+compare - $TMP <<EOF || exit 1
+####  Copyright (C) 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985,
+####  1986, 1987, 1988, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+####  2008 Free Software Foundation, Inc.
+EOF
+rm $TMP*
+
+## ------------- ##
+## Blank lines.  ##
+## ------------- ##
+
+TMP=$TMP_BASE-blank-lines
+cat > $TMP <<EOF
+#Copyright (C) 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985,
+#
+#1986, 1987, 1988, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+#2008 Free Software Foundation, Inc.
+
+Copyright (C) 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985,
+
+1986, 1987, 1988, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+2008 Free Software Foundation, Inc.
+EOF
+UPDATE_COPYRIGHT_YEAR=2010 \
+  update-copyright $TMP 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare - $TMP-stderr <<EOF || exit 1
+$TMP: warning: copyright statement not found
+EOF
+compare - $TMP <<EOF || exit 1
+#Copyright (C) 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985,
+#
+#1986, 1987, 1988, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+#2008 Free Software Foundation, Inc.
+
+Copyright (C) 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985,
+
+1986, 1987, 1988, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+2008 Free Software Foundation, Inc.
+EOF
+rm $TMP*
+
+## -------------- ##
+## Leading tabs.  ##
+## -------------- ##
+
+TMP=$TMP_BASE-leading-tabs
+cat > $TMP <<EOF
+	Copyright (C) 87, 88, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 98,
+	 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free
+	Software Foundation, Inc.
+EOF
+UPDATE_COPYRIGHT_YEAR=2010 \
+  update-copyright $TMP 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare /dev/null $TMP-stderr || exit 1
+compare - $TMP <<EOF || exit 1
+	Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996,
+	1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
+	2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+EOF
+UPDATE_COPYRIGHT_YEAR=2011 UPDATE_COPYRIGHT_USE_INTERVALS=1 \
+  update-copyright $TMP 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare /dev/null $TMP-stderr || exit 1
+compare - $TMP <<EOF || exit 1
+	Copyright (C) 1987-1988, 1991-2011 Free Software Foundation,
+	Inc.
+EOF
+rm $TMP*
+
+## -------------------- ##
+## Unusual whitespace.  ##
+## -------------------- ##
+
+TMP=$TMP_BASE-unusual-ws
+cat > $TMP <<EOF
+		# Copyright (C) 87-88, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+		# 98, 1999, 2000, 2001, 2002, 2003,     		  2004, 2005, 2006, 2007, 2008,
+		# 2009 Free Software Foundation, Inc.
+EOF
+UPDATE_COPYRIGHT_YEAR=2010 \
+  update-copyright $TMP 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare /dev/null $TMP-stderr || exit 1
+compare - $TMP <<EOF || exit 1
+		# Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994,
+		# 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+		# 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
+		# Foundation, Inc.
+EOF
+UPDATE_COPYRIGHT_YEAR=2011 UPDATE_COPYRIGHT_USE_INTERVALS=1 \
+  update-copyright $TMP 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare /dev/null $TMP-stderr || exit 1
+compare - $TMP <<EOF || exit 1
+		# Copyright (C) 1987-1988, 1991-2011 Free Software
+		# Foundation, Inc.
+EOF
+UPDATE_COPYRIGHT_YEAR=2011 UPDATE_COPYRIGHT_USE_INTERVALS=2 \
+  UPDATE_COPYRIGHT_FORCE=1 update-copyright $TMP 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare /dev/null $TMP-stderr || exit 1
+compare - $TMP <<EOF || exit 1
+		# Copyright (C) 1987-2011 Free Software Foundation, Inc.
+EOF
+rm $TMP*
+
+## --------- ##
+## DOS EOL.  ##
+## --------- ##
+
+TMP=$TMP_BASE-dos-eol
+tr @ '\015' > $TMP <<\EOF
+Rem Copyright (C) 87, 88, 1991, 1992, 1993, 1994, 1995, 1996, 1997,@
+Rem 98, 1999, 2000, 2001, 2002, 2003,  2004, 2005, 2006, 2007, 2008,@
+Rem 2009 Free Software Foundation, Inc.@
+EOF
+UPDATE_COPYRIGHT_YEAR=2010 \
+  update-copyright $TMP 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare /dev/null $TMP-stderr || exit 1
+tr @ '\015' > $TMP-exp <<\EOF
+Rem Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996, 1997,@
+Rem 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,@
+Rem 2009, 2010 Free Software Foundation, Inc.@
+EOF
+compare $TMP-exp $TMP || exit 1
+rm $TMP*
+
+## --------------- ##
+## Omitted "(C)".  ##
+## --------------- ##
+
+TMP=$TMP_BASE-omitted-circle-c
+cat > $TMP <<EOF
+  Copyright 87, 88, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+  98, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+  2009 Free Software Foundation, Inc.
+EOF
+UPDATE_COPYRIGHT_YEAR=2010 \
+  update-copyright $TMP 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare /dev/null $TMP-stderr || exit 1
+compare - $TMP <<EOF || exit 1
+  Copyright 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+  1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+  Free Software Foundation, Inc.
+EOF
+rm $TMP*
+
+## ------------------ ##
+## C-style comments.  ##
+## ------------------ ##
+
+TMP=$TMP_BASE-c-style-comments
+cat > $TMP.star <<EOF
+/*  Copyright 87, 88, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+ *  98, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+ *  2009 Free Software Foundation, Inc.  */
+EOF
+cat > $TMP.space <<EOF
+  /*Copyright 87, 88, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+    98, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+    2009 Free Software Foundation, Inc.  */
+EOF
+cat > $TMP.single-line <<EOF
+/*   Copyright 87, 1991, 1992 Free Software Foundation, Inc.  */
+EOF
+cat > $TMP.single-line-wrapped <<EOF
+ /* Copyright 1988, 1991, 1992, 1993 Free Software Foundation, Inc.  */
+EOF
+cat > $TMP.extra-text-star <<EOF
+ /* Copyright 1987, 1988, 1991, 1992 Free Software Foundation, Inc.  End
+  * More comments.  */
+EOF
+cat > $TMP.extra-text-space <<EOF
+ /* Copyright 1987, 1988, 1991, 1992 Free Software Foundation, Inc. ***
+    * End of comments. */
+EOF
+cat > $TMP.two-digit-final-is-substr-of-first <<EOF
+ /* Copyright 1991, 99 Free Software Foundation, Inc. */
+EOF
+UPDATE_COPYRIGHT_YEAR=2010 \
+  update-copyright $TMP.* 1> $TMP-stdout 2> $TMP-stderr
+compare /dev/null $TMP-stdout || exit 1
+compare /dev/null $TMP-stderr || exit 1
+compare - $TMP.star <<EOF || exit 1
+/*  Copyright 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+ *  1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+ *  2009, 2010 Free Software Foundation, Inc.  */
+EOF
+compare - $TMP.space <<EOF || exit 1
+  /*Copyright 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+    1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+    2009, 2010 Free Software Foundation, Inc.  */
+EOF
+compare - $TMP.single-line <<EOF || exit 1
+/*   Copyright 1987, 1991, 1992, 2010 Free Software Foundation, Inc.  */
+EOF
+compare - $TMP.single-line-wrapped <<EOF || exit 1
+ /* Copyright 1988, 1991, 1992, 1993, 2010 Free Software Foundation,
+  * Inc.  */
+EOF
+compare - $TMP.extra-text-star <<EOF || exit 1
+ /* Copyright 1987, 1988, 1991, 1992, 2010 Free Software Foundation,
+  * Inc.  End
+  * More comments.  */
+EOF
+compare - $TMP.extra-text-space <<EOF || exit 1
+ /* Copyright 1987, 1988, 1991, 1992, 2010 Free Software Foundation,
+    Inc. ***
+    * End of comments. */
+EOF
+compare - $TMP.two-digit-final-is-substr-of-first <<EOF || exit 1
+ /* Copyright 1991, 1999, 2010 Free Software Foundation, Inc. */
+EOF
+rm $TMP*
+
+exit 0
diff --git a/gnulib-tests/test-userspec.c b/gnulib-tests/test-userspec.c
new file mode 100644
index 0000000..546befc
--- /dev/null
+++ b/gnulib-tests/test-userspec.c
@@ -0,0 +1,201 @@
+/* Test userspec.c
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <config.h>
+
+#include "userspec.h"
+
+#include <stdio.h>
+#include <assert.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <sys/types.h>
+#include <pwd.h>
+#include <grp.h>
+
+#include "xalloc.h"
+
+#define ARRAY_CARDINALITY(Array) (sizeof (Array) / sizeof *(Array))
+
+struct test
+{
+  const char *in;
+  uid_t uid;
+  gid_t gid;
+  const char *user_name;
+  const char *group_name;
+  const char *result;
+};
+
+static struct test T[] =
+  {
+    { "",                       -1, -1, "",   "",   NULL},
+    { ":",                      -1, -1, "",   "",   NULL},
+    { "+0:+0",                   0,  0, "",   "",   NULL},
+    { ":+1",                    -1,  1, "",   "",   NULL},
+    { "+1",                      1, -1, "",   "",   NULL},
+    { ":+0",                    -1,  0, "",   "",   NULL},
+    { "+22:+42",                22, 42, "",   "",   NULL},
+    /* (uint32_t)-1 should be invalid everywhere */
+    { "+4294967295:+4294967295", 0,  0, NULL, NULL, "invalid user"},
+    /* likewise, but with only the group being invalid */
+    { "+0:+4294967295",          0,  0, NULL, NULL, "invalid group"},
+    { ":+4294967295",            0,  0, NULL, NULL, "invalid group"},
+    /* and only the user being invalid */
+    { "+4294967295:+0",          0,  0, NULL, NULL, "invalid user"},
+    /* and using 2^32 */
+    { "+4294967296:+4294967296", 0,  0, NULL, NULL, "invalid user"},
+    { "+0:+4294967296",          0,  0, NULL, NULL, "invalid group"},
+    { ":+4294967296",            0,  0, NULL, NULL, "invalid group"},
+    { "+4294967296:+0",          0,  0, NULL, NULL, "invalid user"},
+    /* numeric user and no group is invalid */
+    { "+4294967295:",            0,  0, NULL, NULL, "invalid spec"},
+    { "+4294967296:",            0,  0, NULL, NULL, "invalid spec"},
+    { "+1:",                     0,  0, NULL, NULL, "invalid spec"},
+    { "+0:",                     0,  0, NULL, NULL, "invalid spec"},
+
+    /* "username:" must expand to UID:GID where GID is username's login group */
+    /* Add an entry like the following to the table, if possible.
+    { "U_NAME:",              UID,GID, U_NAME, G_NAME, NULL}, */
+    { NULL,                     0,  0, NULL, NULL, ""},  /* place-holder */
+
+    { NULL,                     0,  0, NULL, NULL, ""}
+  };
+
+#define STREQ(a, b) (strcmp (a, b) == 0)
+
+static char const *
+maybe_null (char const *s)
+{
+  return s ? s : "NULL";
+}
+
+static bool
+same_diag (char const *s, char const *t)
+{
+  if (s == NULL && t == NULL)
+    return true;
+  if (s == NULL || t == NULL)
+    return false;
+  return STREQ (s, t);
+}
+
+int
+main (void)
+{
+  unsigned int i;
+  int fail = 0;
+
+  /* Find a UID that has both a user name and login group name,
+     but skip UID 0.  */
+  {
+    uid_t uid;
+    for (uid = 1200; 0 < uid; uid--)
+      {
+        struct group *gr;
+        struct passwd *pw = getpwuid (uid);
+        unsigned int j;
+        size_t len;
+        if (!pw || !pw->pw_name || !(gr = getgrgid (pw->pw_gid)) || !gr->gr_name)
+          continue;
+        j = ARRAY_CARDINALITY (T) - 2;
+        assert (T[j].in == NULL);
+        assert (T[j+1].in == NULL);
+        len = strlen (pw->pw_name);
+
+        /* Store "username:" in T[j].in.  */
+        {
+          char *t = xmalloc (len + 1 + 1);
+          memcpy (t, pw->pw_name, len);
+          t[len] = ':';
+          t[len+1] = '\0';
+          T[j].in = t;
+        }
+
+        T[j].uid = uid;
+        T[j].gid = gr->gr_gid;
+        T[j].user_name = xstrdup (pw->pw_name);
+        T[j].group_name = xstrdup (gr->gr_name);
+        T[j].result = NULL;
+        break;
+      }
+  }
+
+  for (i = 0; T[i].in; i++)
+    {
+      uid_t uid = (uid_t) -1;
+      gid_t gid = (gid_t) -1;
+      char *user_name;
+      char *group_name;
+      char const *diag = parse_user_spec (T[i].in, &uid, &gid,
+                                          &user_name, &group_name);
+      free (user_name);
+      free (group_name);
+      if (!same_diag (diag, T[i].result))
+        {
+          printf ("%s return value mismatch: got %s, expected %s\n",
+                  T[i].in, maybe_null (diag), maybe_null (T[i].result));
+          fail = 1;
+          continue;
+        }
+
+      if (diag)
+        continue;
+
+      if (uid != T[i].uid || gid != T[i].gid)
+        {
+          printf ("%s mismatch (-: expected uid,gid; +:actual)\n"
+                  "-%3lu,%3lu\n+%3lu,%3lu\n",
+                  T[i].in,
+                  (unsigned long int) T[i].uid,
+                  (unsigned long int) T[i].gid,
+                  (unsigned long int) uid,
+                  (unsigned long int) gid);
+          fail = 1;
+        }
+
+      if (!T[i].result)
+        continue;
+
+      /* Expected a non-NULL result diagnostic, yet got NULL.  */
+      diag = "NULL";
+      printf ("%s diagnostic mismatch (-: expected diagnostic; +:actual)\n"
+              "-%s\n+%s\n", T[i].in, T[i].result, diag);
+      fail = 1;
+    }
+
+  /* Ensure NULL parameters are ignored.  */
+  {
+    uid_t uid = (uid_t) -1;
+    char const *diag = parse_user_spec ("", &uid, NULL, NULL, NULL);
+    if (diag)
+      {
+        printf ("unexpected error: %s\n", diag);
+        fail = 1;
+      }
+  }
+
+  return fail;
+}
+
+/*
+Local Variables:
+indent-tabs-mode: nil
+End:
+*/
diff --git a/gnulib-tests/test-usleep.c b/gnulib-tests/test-usleep.c
new file mode 100644
index 0000000..e135c31
--- /dev/null
+++ b/gnulib-tests/test-usleep.c
@@ -0,0 +1,40 @@
+/* Test of usleep() function.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (usleep, int, (useconds_t));
+
+#include <time.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  time_t start = time (NULL);
+  ASSERT (usleep (1000000) == 0);
+  ASSERT (start < time (NULL));
+
+  ASSERT (usleep (0) == 0);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-utime-h.c b/gnulib-tests/test-utime-h.c
new file mode 100644
index 0000000..2eea3c2
--- /dev/null
+++ b/gnulib-tests/test-utime-h.c
@@ -0,0 +1,32 @@
+/* Test of <utime.h> substitute.
+   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2017.  */
+
+#include <config.h>
+
+#include <utime.h>
+
+/* Check that 'struct utimbuf' is defined.  */
+struct utimbuf b;
+
+int
+main (void)
+{
+  b.actime = b.modtime = 1493490248; /* 2017-04-29 18:24:08 GMT */
+
+  return 0;
+}
diff --git a/gnulib-tests/test-utime.c b/gnulib-tests/test-utime.c
new file mode 100644
index 0000000..4cf5836
--- /dev/null
+++ b/gnulib-tests/test-utime.c
@@ -0,0 +1,142 @@
+/* Tests of utime.
+   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <utime.h>
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-utime.t"
+
+#include "test-utimens-common.h"
+
+/* If PRINT, warn before skipping tests with status 77.  */
+static int
+test_utime (bool print)
+{
+  struct stat st1;
+  struct stat st2;
+
+  ASSERT (close (creat (BASE "file", 0600)) == 0);
+  ASSERT (stat (BASE "file", &st1) == 0);
+  nap ();
+  ASSERT (utime (BASE "file", NULL) == 0);
+  ASSERT (stat (BASE "file", &st2) == 0);
+  ASSERT (0 <= utimecmp (BASE "file", &st2, &st1, UTIMECMP_TRUNCATE_SOURCE));
+  if (check_ctime)
+    ASSERT (ctime_compare (&st1, &st2) < 0);
+  {
+    /* On some NFS systems, the 'now' timestamp of creat or a NULL
+       utimbuf is determined by the server, but the 'now' timestamp
+       determined by time() is determined by the client; since the two
+       machines are not necessarily on the same clock, this is another
+       case where time can appear to go backwards.  The rest of this
+       test cares about client time, so manually use time() to set
+       both times.  */
+    struct utimbuf ts;
+    ts.actime = ts.modtime = time (NULL);
+    ASSERT (utime (BASE "file", &ts) == 0);
+    ASSERT (stat (BASE "file", &st1) == 0);
+    nap ();
+  }
+
+  /* Invalid arguments.  */
+  errno = 0;
+  ASSERT (utime ("no_such", NULL) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (utime ("no_such/", NULL) == -1);
+  ASSERT (errno == ENOENT || errno == ENOTDIR);
+  errno = 0;
+  ASSERT (utime ("", NULL) == -1);
+  ASSERT (errno == ENOENT);
+  {
+    struct utimbuf ts;
+    ts.actime = ts.modtime = Y2K;
+    errno = 0;
+    ASSERT (utime (BASE "file/", &ts) == -1);
+    ASSERT (errno == ENOTDIR || errno == EINVAL);
+  }
+  ASSERT (stat (BASE "file", &st2) == 0);
+  ASSERT (st1.st_atime == st2.st_atime);
+  ASSERT (get_stat_atime_ns (&st1) == get_stat_atime_ns (&st2));
+  ASSERT (utimecmp (BASE "file", &st1, &st2, 0) == 0);
+
+  /* Set both times.  */
+  {
+    struct utimbuf ts;
+    ts.actime = ts.modtime = Y2K;
+    ASSERT (utime (BASE "file", &ts) == 0);
+    ASSERT (stat (BASE "file", &st2) == 0);
+    ASSERT (st2.st_atime == Y2K);
+    ASSERT (0 <= get_stat_atime_ns (&st2));
+    ASSERT (get_stat_atime_ns (&st2) < BILLION / 2);
+    ASSERT (st2.st_mtime == Y2K);
+    ASSERT (0 <= get_stat_mtime_ns (&st2));
+    ASSERT (get_stat_mtime_ns (&st2) < BILLION);
+    if (check_ctime)
+      ASSERT (ctime_compare (&st1, &st2) < 0);
+  }
+
+  /* Make sure this dereferences symlinks.  */
+  if (symlink (BASE "file", BASE "link"))
+    {
+      ASSERT (unlink (BASE "file") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  ASSERT (lstat (BASE "link", &st1) == 0);
+  ASSERT (st1.st_mtime != Y2K);
+  errno = 0;
+  ASSERT (utime (BASE "link/", NULL) == -1);
+  ASSERT (errno == ENOTDIR);
+  {
+    struct utimbuf ts;
+    ts.actime = ts.modtime = Y2K;
+    ASSERT (utime (BASE "link", &ts) == 0);
+    ASSERT (lstat (BASE "link", &st2) == 0);
+    /* Can't compare atimes, since lstat() changes symlink atime on cygwin.  */
+    ASSERT (st1.st_mtime == st2.st_mtime);
+    ASSERT (stat (BASE "link", &st2) == 0);
+    ASSERT (st2.st_mtime == Y2K);
+    ASSERT (get_stat_mtime_ns (&st2) == 0);
+  }
+
+  /* Cleanup.  */
+  ASSERT (unlink (BASE "link") == 0);
+  ASSERT (unlink (BASE "file") == 0);
+  return 0;
+}
+
+int
+main (void)
+{
+  int result1; /* Skip because of no symlink support.  */
+
+  /* Clean up any trash from prior testsuite runs.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  result1 = test_utime (true);
+  return result1;
+}
diff --git a/gnulib-tests/test-utimens-common.h b/gnulib-tests/test-utimens-common.h
new file mode 100644
index 0000000..e923620
--- /dev/null
+++ b/gnulib-tests/test-utimens-common.h
@@ -0,0 +1,79 @@
+/* Test of file timestamp modification functions.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This file defines some prerequisites useful to utime-related tests.  */
+
+#ifndef GL_TEST_UTIMENS_COMMON
+# define GL_TEST_UTIMENS_COMMON
+
+# include <fcntl.h>
+# include <errno.h>
+# include <string.h>
+# include <sys/stat.h>
+# include <unistd.h>
+
+/* Gnulib modules.  */
+# include "stat-time.h"
+# include "timespec.h"
+# include "utimecmp.h"
+
+/* Gnulib test header.  */
+# include "nap.h"
+
+enum {
+  BILLION = 1000 * 1000 * 1000,
+
+  Y2K = 946684800, /* Jan 1, 2000, in seconds since epoch.  */
+
+  /* Bogus positive and negative tv_nsec values closest to valid
+     range, but without colliding with UTIME_NOW or UTIME_OMIT.  */
+  UTIME_BOGUS_POS = BILLION + ((UTIME_NOW == BILLION || UTIME_OMIT == BILLION)
+                               ? (1 + (UTIME_NOW == BILLION + 1)
+                                  + (UTIME_OMIT == BILLION + 1))
+                               : 0),
+  UTIME_BOGUS_NEG = -1 - ((UTIME_NOW == -1 || UTIME_OMIT == -1)
+                          ? (1 + (UTIME_NOW == -2) + (UTIME_OMIT == -2))
+                          : 0)
+};
+
+# if defined _WIN32 && !defined __CYGWIN__
+/* Skip ctime tests on native Windows, since it is either a copy of
+   mtime or birth time (depending on the file system), rather than a
+   properly tracked change time.  See
+   <https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/stat-functions>.  */
+#  define check_ctime 0
+# else
+#  define check_ctime 1
+# endif
+
+/* Compare two st_ctime values.  Return -1, 0 or 1, respectively
+   when A's st_ctime is smaller than, equal to or greater than B's.  */
+static int
+ctime_compare (struct stat const *a, struct stat const *b)
+{
+  if (a->st_ctime < b->st_ctime)
+    return -1;
+  else if (b->st_ctime < a->st_ctime)
+    return 1;
+  else if (get_stat_ctime_ns (a) < get_stat_ctime_ns (b))
+    return -1;
+  else if (get_stat_ctime_ns (b) < get_stat_ctime_ns (a))
+    return 1;
+  else
+    return 0;
+}
+
+#endif /* GL_TEST_UTIMENS_COMMON */
diff --git a/gnulib-tests/test-utimens.c b/gnulib-tests/test-utimens.c
new file mode 100644
index 0000000..3d53b37
--- /dev/null
+++ b/gnulib-tests/test-utimens.c
@@ -0,0 +1,80 @@
+/* Tests of utimens.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include "utimens.h"
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-utimens.t"
+
+#include "test-futimens.h"
+#include "test-lutimens.h"
+#include "test-utimens.h"
+
+/* Wrap fdutimens to behave like futimens.  */
+static int
+do_futimens (int fd, struct timespec const times[2])
+{
+  return fdutimens (fd, NULL, times);
+}
+
+/* Test the use of file descriptors alongside a name.  */
+static int
+do_fdutimens (char const *name, struct timespec const times[2])
+{
+  int result;
+  int fd = open (name, O_WRONLY);
+  if (fd < 0)
+    fd = open (name, O_RDONLY);
+  errno = 0;
+  result = fdutimens (fd, name, times);
+  if (0 <= fd)
+    {
+      int saved_errno = errno;
+      close (fd);
+      errno = saved_errno;
+    }
+  return result;
+}
+
+int
+main (void)
+{
+  int result1; /* Skip because of no symlink support.  */
+  int result2; /* Skip because of no futimens support.  */
+  int result3; /* Skip because of no lutimens support.  */
+
+  /* Clean up any trash from prior testsuite runs.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  result1 = test_utimens (utimens, true);
+  ASSERT (test_utimens (do_fdutimens, false) == result1);
+  /* Print only one skip message.  */
+  result2 = test_futimens (do_futimens, result1 == 0);
+  result3 = test_lutimens (lutimens, (result1 + result2) == 0);
+  /* We expect 0/0, 0/77, or 77/77, but not 77/0.  */
+  ASSERT (result1 <= result3);
+  return result1 | result2 | result3;
+}
diff --git a/gnulib-tests/test-utimens.h b/gnulib-tests/test-utimens.h
new file mode 100644
index 0000000..a05b232
--- /dev/null
+++ b/gnulib-tests/test-utimens.h
@@ -0,0 +1,184 @@
+/* Test of file timestamp modification functions.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "test-utimens-common.h"
+
+/* This file is designed to test both utimens(a,b) and
+   utimensat(AT_FDCWD,a,b,0).  FUNC is the function to test.  Assumes
+   that BASE and ASSERT are already defined.  If PRINT, warn before
+   skipping tests with status 77.  */
+static int
+test_utimens (int (*func) (char const *, struct timespec const *), bool print)
+{
+  struct stat st1;
+  struct stat st2;
+
+  ASSERT (close (creat (BASE "file", 0600)) == 0);
+  /* If utimens truncates to worse resolution than the file system
+     supports, then time can appear to go backwards between now and a
+     follow-up utimens with UTIME_NOW or a NULL timespec.  Use
+     UTIMECMP_TRUNCATE_SOURCE to compensate, with st1 as the
+     source.  */
+  ASSERT (stat (BASE "file", &st1) == 0);
+  nap ();
+  ASSERT (func (BASE "file", NULL) == 0);
+  ASSERT (stat (BASE "file", &st2) == 0);
+  ASSERT (0 <= utimecmp (BASE "file", &st2, &st1, UTIMECMP_TRUNCATE_SOURCE));
+  if (check_ctime)
+    ASSERT (ctime_compare (&st1, &st2) < 0);
+  {
+    /* On some NFS systems, the 'now' timestamp of creat or a NULL
+       timespec is determined by the server, but the 'now' timestamp
+       determined by gettime() (as is done when using UTIME_NOW) is
+       determined by the client; since the two machines are not
+       necessarily on the same clock, this is another case where time
+       can appear to go backwards.  The rest of this test cares about
+       client time, so manually use gettime() to set both times.  */
+    struct timespec ts[2];
+    gettime (&ts[0]);
+    ts[1] = ts[0];
+    ASSERT (func (BASE "file", ts) == 0);
+    ASSERT (stat (BASE "file", &st1) == 0);
+    nap ();
+  }
+
+  /* Invalid arguments.  */
+  errno = 0;
+  ASSERT (func ("no_such", NULL) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("no_such/", NULL) == -1);
+  ASSERT (errno == ENOENT || errno == ENOTDIR);
+  errno = 0;
+  ASSERT (func ("", NULL) == -1);
+  ASSERT (errno == ENOENT);
+  {
+    struct timespec ts[2];
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = UTIME_BOGUS_POS;
+    ts[1].tv_sec = Y2K;
+    ts[1].tv_nsec = 0;
+    errno = 0;
+    ASSERT (func (BASE "file", ts) == -1);
+    ASSERT (errno == EINVAL);
+  }
+  {
+    struct timespec ts[2];
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = 0;
+    ts[1].tv_sec = Y2K;
+    ts[1].tv_nsec = UTIME_BOGUS_NEG;
+    errno = 0;
+    ASSERT (func (BASE "file", ts) == -1);
+    ASSERT (errno == EINVAL);
+  }
+  {
+    struct timespec ts[2];
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = 0;
+    ts[1] = ts[0];
+    errno = 0;
+    ASSERT (func (BASE "file/", ts) == -1);
+    ASSERT (errno == ENOTDIR || errno == EINVAL);
+  }
+  ASSERT (stat (BASE "file", &st2) == 0);
+  ASSERT (st1.st_atime == st2.st_atime);
+  ASSERT (get_stat_atime_ns (&st1) == get_stat_atime_ns (&st2));
+  ASSERT (utimecmp (BASE "file", &st1, &st2, 0) == 0);
+
+  /* Set both times.  */
+  {
+    struct timespec ts[2];
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = BILLION / 2 - 1;
+    ts[1].tv_sec = Y2K;
+    ts[1].tv_nsec = BILLION - 1;
+    ASSERT (func (BASE "file", ts) == 0);
+    ASSERT (stat (BASE "file", &st2) == 0);
+    ASSERT (st2.st_atime == Y2K);
+    ASSERT (0 <= get_stat_atime_ns (&st2));
+    ASSERT (get_stat_atime_ns (&st2) < BILLION / 2);
+    ASSERT (st2.st_mtime == Y2K);
+    ASSERT (0 <= get_stat_mtime_ns (&st2));
+    ASSERT (get_stat_mtime_ns (&st2) < BILLION);
+    if (check_ctime)
+      ASSERT (ctime_compare (&st1, &st2) < 0);
+  }
+
+  /* Play with UTIME_OMIT, UTIME_NOW.  */
+  {
+    struct stat st3;
+    struct timespec ts[2];
+    ts[0].tv_sec = BILLION;
+    ts[0].tv_nsec = UTIME_OMIT;
+    ts[1].tv_sec = 0;
+    ts[1].tv_nsec = UTIME_NOW;
+    nap ();
+    ASSERT (func (BASE "file", ts) == 0);
+    ASSERT (stat (BASE "file", &st3) == 0);
+    ASSERT (st3.st_atime == Y2K);
+    ASSERT (0 <= get_stat_atime_ns (&st3));
+    ASSERT (get_stat_atime_ns (&st3) < BILLION / 2);
+    /* See comment above about this utimecmp call.  */
+    ASSERT (0 <= utimecmp (BASE "file", &st3, &st1, UTIMECMP_TRUNCATE_SOURCE));
+    if (check_ctime)
+      ASSERT (ctime_compare (&st2, &st3) < 0);
+    nap ();
+    ts[0].tv_nsec = 0;
+    ts[1].tv_nsec = UTIME_OMIT;
+    ASSERT (func (BASE "file", ts) == 0);
+    ASSERT (stat (BASE "file", &st2) == 0);
+    ASSERT (st2.st_atime == BILLION);
+    ASSERT (get_stat_atime_ns (&st2) == 0);
+    ASSERT (st3.st_mtime == st2.st_mtime);
+    ASSERT (get_stat_mtime_ns (&st3) == get_stat_mtime_ns (&st2));
+    if (check_ctime)
+      ASSERT (ctime_compare (&st3, &st2) < 0);
+  }
+
+  /* Make sure this dereferences symlinks.  */
+  if (symlink (BASE "file", BASE "link"))
+    {
+      ASSERT (unlink (BASE "file") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  ASSERT (lstat (BASE "link", &st1) == 0);
+  ASSERT (st1.st_mtime != Y2K);
+  errno = 0;
+  ASSERT (func (BASE "link/", NULL) == -1);
+  ASSERT (errno == ENOTDIR);
+  {
+    struct timespec ts[2];
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = 0;
+    ts[1] = ts[0];
+    ASSERT (func (BASE "link", ts) == 0);
+    ASSERT (lstat (BASE "link", &st2) == 0);
+    /* Can't compare atimes, since lstat() changes symlink atime on cygwin.  */
+    ASSERT (st1.st_mtime == st2.st_mtime);
+    ASSERT (stat (BASE "link", &st2) == 0);
+    ASSERT (st2.st_mtime == Y2K);
+    ASSERT (get_stat_mtime_ns (&st2) == 0);
+  }
+
+  /* Cleanup.  */
+  ASSERT (unlink (BASE "link") == 0);
+  ASSERT (unlink (BASE "file") == 0);
+  return 0;
+}
diff --git a/gnulib-tests/test-utimensat.c b/gnulib-tests/test-utimensat.c
new file mode 100644
index 0000000..6aced15
--- /dev/null
+++ b/gnulib-tests/test-utimensat.c
@@ -0,0 +1,128 @@
+/* Tests of utimensat.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (utimensat, int, (int, char const *, struct timespec const[2],
+                                  int));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "stat-time.h"
+#include "timespec.h"
+#include "utimecmp.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-utimensat.t"
+
+#include "test-lutimens.h"
+#include "test-utimens.h"
+
+static int dfd = AT_FDCWD;
+
+/* Wrap utimensat to behave like utimens.  */
+static int
+do_utimensat (char const *name, struct timespec const times[2])
+{
+  return utimensat (dfd, name, times, 0);
+}
+
+/* Wrap utimensat to behave like lutimens.  */
+static int
+do_lutimensat (char const *name, struct timespec const times[2])
+{
+  return utimensat (dfd, name, times, AT_SYMLINK_NOFOLLOW);
+}
+
+int
+main (void)
+{
+  int result1; /* Skip because of no symlink support.  */
+  int result2; /* Skip because of no lutimens support.  */
+  int fd;
+
+  /* Clean up any trash from prior testsuite runs.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (utimensat (-1, "foo", NULL, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (utimensat (99, "foo", NULL, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Basic tests.  */
+  result1 = test_utimens (do_utimensat, true);
+  result2 = test_lutimens (do_lutimensat, result1 == 0);
+  dfd = open (".", O_RDONLY);
+  ASSERT (0 <= dfd);
+  ASSERT (test_utimens (do_utimensat, false) == result1);
+  ASSERT (test_lutimens (do_lutimensat, false) == result2);
+  /* We expect 0/0, 0/77, or 77/77, but not 77/0.  */
+  ASSERT (result1 <= result2);
+
+  /* Directory-relative tests.  */
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  ASSERT (chdir (BASE "dir") == 0);
+  fd = creat ("file", 0600);
+  ASSERT (0 <= fd);
+  errno = 0;
+  ASSERT (utimensat (fd, ".", NULL, 0) == -1);
+  ASSERT (errno == ENOTDIR);
+  {
+    struct timespec ts[2];
+    struct stat st;
+    ts[0].tv_sec = Y2K;
+    ts[0].tv_nsec = 0;
+    ts[1].tv_sec = Y2K;
+    ts[1].tv_nsec = 0;
+    ASSERT (utimensat (dfd, BASE "dir/file", ts, AT_SYMLINK_NOFOLLOW) == 0);
+    ASSERT (stat ("file", &st) == 0);
+    ASSERT (st.st_atime == Y2K);
+    ASSERT (get_stat_atime_ns (&st) == 0);
+    ASSERT (st.st_mtime == Y2K);
+    ASSERT (get_stat_mtime_ns (&st) == 0);
+  }
+  ASSERT (close (fd) == 0);
+  ASSERT (close (dfd) == 0);
+  errno = 0;
+  ASSERT (utimensat (dfd, ".", NULL, 0) == -1);
+  ASSERT (errno == EBADF);
+
+  /* Cleanup.  */
+  ASSERT (chdir ("..") == 0);
+  ASSERT (unlink (BASE "dir/file") == 0);
+  ASSERT (rmdir (BASE "dir") == 0);
+  return result1 | result2;
+}
diff --git a/gnulib-tests/test-vasnprintf.c b/gnulib-tests/test-vasnprintf.c
new file mode 100644
index 0000000..018f845
--- /dev/null
+++ b/gnulib-tests/test-vasnprintf.c
@@ -0,0 +1,121 @@
+/* Test of vasnprintf() and asnprintf() functions.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "vasnprintf.h"
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+static void
+test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
+{
+  char buf[8];
+  int size;
+
+  for (size = 0; size <= 8; size++)
+    {
+      size_t length = size;
+      char *result = my_asnprintf (NULL, &length, "%d", 12345);
+      ASSERT (result != NULL);
+      ASSERT (strcmp (result, "12345") == 0);
+      ASSERT (length == 5);
+      free (result);
+    }
+
+  for (size = 0; size <= 8; size++)
+    {
+      size_t length;
+      char *result;
+
+      memcpy (buf, "DEADBEEF", 8);
+      length = size;
+      result = my_asnprintf (buf, &length, "%d", 12345);
+      ASSERT (result != NULL);
+      ASSERT (strcmp (result, "12345") == 0);
+      ASSERT (length == 5);
+      if (size < 5 + 1)
+        ASSERT (result != buf);
+      ASSERT (memcmp (buf + size, &"DEADBEEF"[size], 8 - size) == 0);
+      if (result != buf)
+        free (result);
+    }
+
+  /* Note: This test assumes IEEE 754 representation of 'double' floats.  */
+  for (size = 0; size <= 8; size++)
+    {
+      size_t length;
+      char *result;
+
+      memcpy (buf, "DEADBEEF", 8);
+      length = size;
+      result = my_asnprintf (buf, &length, "%2.0f", 1.6314159265358979e+125);
+      ASSERT (result != NULL);
+      /* The exact result and the result on glibc systems is
+         163141592653589790215729350939528493057529598899734151772468186268423257777068536614838678161083520756952076273094236944990208
+         On Cygwin, the result is
+         163141592653589790215729350939528493057529600000000000000000000000000000000000000000000000000000000000000000000000000000000000
+         On HP-UX 11.31 / hppa and IRIX 6.5, the result is
+         163141592653589790000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
+       */
+      ASSERT (strlen (result) == 126);
+      ASSERT (memcmp (result, "163141592653589790", 18) == 0);
+      ASSERT (length == 126);
+      if (size < 126 + 1)
+        ASSERT (result != buf);
+      ASSERT (memcmp (buf + size, &"DEADBEEF"[size], 8 - size) == 0);
+      if (result != buf)
+        free (result);
+    }
+}
+
+static char *
+my_asnprintf (char *resultbuf, size_t *lengthp, const char *format, ...)
+{
+  va_list args;
+  char *ret;
+
+  va_start (args, format);
+  ret = vasnprintf (resultbuf, lengthp, format, args);
+  va_end (args);
+  return ret;
+}
+
+static void
+test_vasnprintf ()
+{
+  test_function (my_asnprintf);
+}
+
+static void
+test_asnprintf ()
+{
+  test_function (asnprintf);
+}
+
+int
+main (int argc, char *argv[])
+{
+  test_vasnprintf ();
+  test_asnprintf ();
+  return 0;
+}
diff --git a/gnulib-tests/test-vasprintf-posix.c b/gnulib-tests/test-vasprintf-posix.c
new file mode 100644
index 0000000..a250133
--- /dev/null
+++ b/gnulib-tests/test-vasprintf-posix.c
@@ -0,0 +1,3602 @@
+/* Test of POSIX compatible vasprintf() and asprintf() functions.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include <float.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+#include "minus-zero.h"
+#include "infinity.h"
+#include "nan.h"
+
+/* The SGI MIPS floating-point format does not distinguish 0.0 and -0.0.  */
+static int
+have_minus_zero ()
+{
+  static double plus_zero = 0.0;
+  double minus_zero = minus_zerod;
+  return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0;
+}
+
+/* Representation of an 80-bit 'long double' as an initializer for a sequence
+   of 'unsigned int' words.  */
+#ifdef WORDS_BIGENDIAN
+# define LDBL80_WORDS(exponent,manthi,mantlo) \
+    { ((unsigned int) (exponent) << 16) | ((unsigned int) (manthi) >> 16), \
+      ((unsigned int) (manthi) << 16) | ((unsigned int) (mantlo) >> 16),   \
+      (unsigned int) (mantlo) << 16                                        \
+    }
+#else
+# define LDBL80_WORDS(exponent,manthi,mantlo) \
+    { mantlo, manthi, exponent }
+#endif
+
+static int
+strmatch (const char *pattern, const char *string)
+{
+  if (strlen (pattern) != strlen (string))
+    return 0;
+  for (; *pattern != '\0'; pattern++, string++)
+    if (*pattern != '*' && *string != *pattern)
+      return 0;
+  return 1;
+}
+
+/* Test whether string[start_index..end_index-1] is a valid textual
+   representation of NaN.  */
+static int
+strisnan (const char *string, size_t start_index, size_t end_index, int uppercase)
+{
+  if (start_index < end_index)
+    {
+      if (string[start_index] == '-')
+        start_index++;
+      if (start_index + 3 <= end_index
+          && memcmp (string + start_index, uppercase ? "NAN" : "nan", 3) == 0)
+        {
+          start_index += 3;
+          if (start_index == end_index
+              || (string[start_index] == '(' && string[end_index - 1] == ')'))
+            return 1;
+        }
+    }
+  return 0;
+}
+
+static void
+test_function (int (*my_asprintf) (char **, const char *, ...))
+{
+  int repeat;
+
+  /* Test return value convention.  */
+
+  for (repeat = 0; repeat <= 8; repeat++)
+    {
+      char *result;
+      int retval = asprintf (&result, "%d", 12345);
+      ASSERT (retval == 5);
+      ASSERT (result != NULL);
+      ASSERT (strcmp (result, "12345") == 0);
+      free (result);
+    }
+
+  /* Test support of size specifiers as in C99.  */
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%ju %d", (uintmax_t) 12345671, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "12345671 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%zu %d", (size_t) 12345672, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "12345672 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%tu %d", (ptrdiff_t) 12345673, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "12345673 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", (long double) 1.5, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.5 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  /* Test the support of the 'a' and 'A' conversion specifier for hexadecimal
+     output of floating-point numbers.  */
+
+  { /* A positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%a %d", 3.1416015625, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.922p+1 33") == 0
+            || strcmp (result, "0x3.244p+0 33") == 0
+            || strcmp (result, "0x6.488p-1 33") == 0
+            || strcmp (result, "0xc.91p-2 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A negative number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%A %d", -3.1416015625, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-0X1.922P+1 33") == 0
+            || strcmp (result, "-0X3.244P+0 33") == 0
+            || strcmp (result, "-0X6.488P-1 33") == 0
+            || strcmp (result, "-0XC.91P-2 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%a %d", 0.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x0p+0 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%a %d", minus_zerod, 33, 44, 55);
+    ASSERT (result != NULL);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0x0p+0 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%a %d", Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "inf 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%a %d", - Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-inf 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%a %d", NaNd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Rounding near the decimal point.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.0a %d", 1.5, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1p+0 33") == 0
+            || strcmp (result, "0x2p+0 33") == 0
+            || strcmp (result, "0x3p-1 33") == 0
+            || strcmp (result, "0x6p-2 33") == 0
+            || strcmp (result, "0xcp-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Rounding with precision 0.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.0a %d", 1.51, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1p+0 33") == 0
+            || strcmp (result, "0x2p+0 33") == 0
+            || strcmp (result, "0x3p-1 33") == 0
+            || strcmp (result, "0x6p-2 33") == 0
+            || strcmp (result, "0xcp-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Rounding with precision 1.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.1a %d", 1.51, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.8p+0 33") == 0
+            || strcmp (result, "0x3.0p-1 33") == 0
+            || strcmp (result, "0x6.1p-2 33") == 0
+            || strcmp (result, "0xc.1p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Rounding with precision 2.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.2a %d", 1.51, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.83p+0 33") == 0
+            || strcmp (result, "0x3.05p-1 33") == 0
+            || strcmp (result, "0x6.0ap-2 33") == 0
+            || strcmp (result, "0xc.14p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Rounding with precision 3.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.3a %d", 1.51, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.829p+0 33") == 0
+            || strcmp (result, "0x3.052p-1 33") == 0
+            || strcmp (result, "0x6.0a4p-2 33") == 0
+            || strcmp (result, "0xc.148p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Rounding can turn a ...FFF into a ...000.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.3a %d", 1.49999, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.800p+0 33") == 0
+            || strcmp (result, "0x3.000p-1 33") == 0
+            || strcmp (result, "0x6.000p-2 33") == 0
+            || strcmp (result, "0xc.000p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Rounding can turn a ...FFF into a ...000.
+       This shows a Mac OS X 10.3.9 (Darwin 7.9) bug.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.1a %d", 1.999, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.0p+1 33") == 0
+            || strcmp (result, "0x2.0p+0 33") == 0
+            || strcmp (result, "0x4.0p-1 33") == 0
+            || strcmp (result, "0x8.0p-2 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Width.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%10a %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "  0x1.cp+0 33") == 0
+            || strcmp (result, "  0x3.8p-1 33") == 0
+            || strcmp (result, "    0x7p-2 33") == 0
+            || strcmp (result, "    0xep-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Small precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.10a %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.c000000000p+0 33") == 0
+            || strcmp (result, "0x3.8000000000p-1 33") == 0
+            || strcmp (result, "0x7.0000000000p-2 33") == 0
+            || strcmp (result, "0xe.0000000000p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Large precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.50a %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.c0000000000000000000000000000000000000000000000000p+0 33") == 0
+            || strcmp (result, "0x3.80000000000000000000000000000000000000000000000000p-1 33") == 0
+            || strcmp (result, "0x7.00000000000000000000000000000000000000000000000000p-2 33") == 0
+            || strcmp (result, "0xe.00000000000000000000000000000000000000000000000000p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_LEFT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%-10a %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.cp+0   33") == 0
+            || strcmp (result, "0x3.8p-1   33") == 0
+            || strcmp (result, "0x7p-2     33") == 0
+            || strcmp (result, "0xep-3     33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SHOWSIGN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%+a %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "+0x1.cp+0 33") == 0
+            || strcmp (result, "+0x3.8p-1 33") == 0
+            || strcmp (result, "+0x7p-2 33") == 0
+            || strcmp (result, "+0xep-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SPACE.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "% a %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, " 0x1.cp+0 33") == 0
+            || strcmp (result, " 0x3.8p-1 33") == 0
+            || strcmp (result, " 0x7p-2 33") == 0
+            || strcmp (result, " 0xep-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#a %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.cp+0 33") == 0
+            || strcmp (result, "0x3.8p-1 33") == 0
+            || strcmp (result, "0x7.p-2 33") == 0
+            || strcmp (result, "0xe.p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#a %d", 1.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.p+0 33") == 0
+            || strcmp (result, "0x2.p-1 33") == 0
+            || strcmp (result, "0x4.p-2 33") == 0
+            || strcmp (result, "0x8.p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with finite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%010a %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x001.cp+0 33") == 0
+            || strcmp (result, "0x003.8p-1 33") == 0
+            || strcmp (result, "0x00007p-2 33") == 0
+            || strcmp (result, "0x0000ep-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with infinite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%010a %d", Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    /* "0000000inf 33" is not a valid result; see
+       <https://lists.gnu.org/r/bug-gnulib/2007-04/msg00107.html> */
+    ASSERT (strcmp (result, "       inf 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%050a %d", NaNd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    /* "0000000nan 33" is not a valid result; see
+       <https://lists.gnu.org/r/bug-gnulib/2007-04/msg00107.html> */
+    ASSERT (strlen (result) == 50 + 3
+            && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%La %d", 3.1416015625L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.922p+1 33") == 0
+            || strcmp (result, "0x3.244p+0 33") == 0
+            || strcmp (result, "0x6.488p-1 33") == 0
+            || strcmp (result, "0xc.91p-2 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A negative number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%LA %d", -3.1416015625L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-0X1.922P+1 33") == 0
+            || strcmp (result, "-0X3.244P+0 33") == 0
+            || strcmp (result, "-0X6.488P-1 33") == 0
+            || strcmp (result, "-0XC.91P-2 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%La %d", 0.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x0p+0 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%La %d", minus_zerol, 33, 44, 55);
+    ASSERT (result != NULL);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0x0p+0 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%La %d", Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "inf 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%La %d", - Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-inf 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%La %d", NaNl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+#if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) && !HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
+  { /* Quiet NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%La %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+  {
+    /* Signalling NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%La %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+  /* asprintf should print something for noncanonical values.  */
+  { /* Pseudo-NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%La %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Pseudo-Infinity.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%La %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Pseudo-Zero.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%La %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Unnormalized number.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%La %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Pseudo-Denormal.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%La %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+#endif
+
+  { /* Rounding near the decimal point.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.0La %d", 1.5L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x2p+0 33") == 0
+            || strcmp (result, "0x3p-1 33") == 0
+            || strcmp (result, "0x6p-2 33") == 0
+            || strcmp (result, "0xcp-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Rounding with precision 0.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.0La %d", 1.51L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x2p+0 33") == 0
+            || strcmp (result, "0x3p-1 33") == 0
+            || strcmp (result, "0x6p-2 33") == 0
+            || strcmp (result, "0xcp-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Rounding with precision 1.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.1La %d", 1.51L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.8p+0 33") == 0
+            || strcmp (result, "0x3.0p-1 33") == 0
+            || strcmp (result, "0x6.1p-2 33") == 0
+            || strcmp (result, "0xc.1p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Rounding with precision 2.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.2La %d", 1.51L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.83p+0 33") == 0
+            || strcmp (result, "0x3.05p-1 33") == 0
+            || strcmp (result, "0x6.0ap-2 33") == 0
+            || strcmp (result, "0xc.14p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Rounding with precision 3.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.3La %d", 1.51L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.829p+0 33") == 0
+            || strcmp (result, "0x3.052p-1 33") == 0
+            || strcmp (result, "0x6.0a4p-2 33") == 0
+            || strcmp (result, "0xc.148p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Rounding can turn a ...FFF into a ...000.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.3La %d", 1.49999L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.800p+0 33") == 0
+            || strcmp (result, "0x3.000p-1 33") == 0
+            || strcmp (result, "0x6.000p-2 33") == 0
+            || strcmp (result, "0xc.000p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Rounding can turn a ...FFF into a ...000.
+       This shows a Mac OS X 10.3.9 (Darwin 7.9) bug and a
+       glibc 2.4 bug <https://sourceware.org/bugzilla/show_bug.cgi?id=2908>.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.1La %d", 1.999L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.0p+1 33") == 0
+            || strcmp (result, "0x2.0p+0 33") == 0
+            || strcmp (result, "0x4.0p-1 33") == 0
+            || strcmp (result, "0x8.0p-2 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Width.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%10La %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "  0x1.cp+0 33") == 0
+            || strcmp (result, "  0x3.8p-1 33") == 0
+            || strcmp (result, "    0x7p-2 33") == 0
+            || strcmp (result, "    0xep-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Small precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.10La %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.c000000000p+0 33") == 0
+            || strcmp (result, "0x3.8000000000p-1 33") == 0
+            || strcmp (result, "0x7.0000000000p-2 33") == 0
+            || strcmp (result, "0xe.0000000000p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Large precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.50La %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.c0000000000000000000000000000000000000000000000000p+0 33") == 0
+            || strcmp (result, "0x3.80000000000000000000000000000000000000000000000000p-1 33") == 0
+            || strcmp (result, "0x7.00000000000000000000000000000000000000000000000000p-2 33") == 0
+            || strcmp (result, "0xe.00000000000000000000000000000000000000000000000000p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_LEFT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%-10La %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.cp+0   33") == 0
+            || strcmp (result, "0x3.8p-1   33") == 0
+            || strcmp (result, "0x7p-2     33") == 0
+            || strcmp (result, "0xep-3     33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SHOWSIGN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%+La %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "+0x1.cp+0 33") == 0
+            || strcmp (result, "+0x3.8p-1 33") == 0
+            || strcmp (result, "+0x7p-2 33") == 0
+            || strcmp (result, "+0xep-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SPACE.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "% La %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, " 0x1.cp+0 33") == 0
+            || strcmp (result, " 0x3.8p-1 33") == 0
+            || strcmp (result, " 0x7p-2 33") == 0
+            || strcmp (result, " 0xep-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#La %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.cp+0 33") == 0
+            || strcmp (result, "0x3.8p-1 33") == 0
+            || strcmp (result, "0x7.p-2 33") == 0
+            || strcmp (result, "0xe.p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#La %d", 1.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.p+0 33") == 0
+            || strcmp (result, "0x2.p-1 33") == 0
+            || strcmp (result, "0x4.p-2 33") == 0
+            || strcmp (result, "0x8.p-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with finite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%010La %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x001.cp+0 33") == 0
+            || strcmp (result, "0x003.8p-1 33") == 0
+            || strcmp (result, "0x00007p-2 33") == 0
+            || strcmp (result, "0x0000ep-3 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with infinite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%010La %d", Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    /* "0000000inf 33" is not a valid result; see
+       <https://lists.gnu.org/r/bug-gnulib/2007-04/msg00107.html> */
+    ASSERT (strcmp (result, "       inf 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%050La %d", NaNl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    /* "0000000nan 33" is not a valid result; see
+       <https://lists.gnu.org/r/bug-gnulib/2007-04/msg00107.html> */
+    ASSERT (strlen (result) == 50 + 3
+            && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  /* Test the support of the %f format directive.  */
+
+  { /* A positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%f %d", 12.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "12.750000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A larger positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%f %d", 1234567.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1234567.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Small and large positive numbers.  */
+    static struct { double value; const char *string; } data[] =
+      {
+        { 1.234321234321234e-37, "0.000000" },
+        { 1.234321234321234e-36, "0.000000" },
+        { 1.234321234321234e-35, "0.000000" },
+        { 1.234321234321234e-34, "0.000000" },
+        { 1.234321234321234e-33, "0.000000" },
+        { 1.234321234321234e-32, "0.000000" },
+        { 1.234321234321234e-31, "0.000000" },
+        { 1.234321234321234e-30, "0.000000" },
+        { 1.234321234321234e-29, "0.000000" },
+        { 1.234321234321234e-28, "0.000000" },
+        { 1.234321234321234e-27, "0.000000" },
+        { 1.234321234321234e-26, "0.000000" },
+        { 1.234321234321234e-25, "0.000000" },
+        { 1.234321234321234e-24, "0.000000" },
+        { 1.234321234321234e-23, "0.000000" },
+        { 1.234321234321234e-22, "0.000000" },
+        { 1.234321234321234e-21, "0.000000" },
+        { 1.234321234321234e-20, "0.000000" },
+        { 1.234321234321234e-19, "0.000000" },
+        { 1.234321234321234e-18, "0.000000" },
+        { 1.234321234321234e-17, "0.000000" },
+        { 1.234321234321234e-16, "0.000000" },
+        { 1.234321234321234e-15, "0.000000" },
+        { 1.234321234321234e-14, "0.000000" },
+        { 1.234321234321234e-13, "0.000000" },
+        { 1.234321234321234e-12, "0.000000" },
+        { 1.234321234321234e-11, "0.000000" },
+        { 1.234321234321234e-10, "0.000000" },
+        { 1.234321234321234e-9, "0.000000" },
+        { 1.234321234321234e-8, "0.000000" },
+        { 1.234321234321234e-7, "0.000000" },
+        { 1.234321234321234e-6, "0.000001" },
+        { 1.234321234321234e-5, "0.000012" },
+        { 1.234321234321234e-4, "0.000123" },
+        { 1.234321234321234e-3, "0.001234" },
+        { 1.234321234321234e-2, "0.012343" },
+        { 1.234321234321234e-1, "0.123432" },
+        { 1.234321234321234, "1.234321" },
+        { 1.234321234321234e1, "12.343212" },
+        { 1.234321234321234e2, "123.432123" },
+        { 1.234321234321234e3, "1234.321234" },
+        { 1.234321234321234e4, "12343.212343" },
+        { 1.234321234321234e5, "123432.123432" },
+        { 1.234321234321234e6, "1234321.234321" },
+        { 1.234321234321234e7, "12343212.343212" },
+        { 1.234321234321234e8, "123432123.432123" },
+        { 1.234321234321234e9, "1234321234.321234" },
+        { 1.234321234321234e10, "12343212343.2123**" },
+        { 1.234321234321234e11, "123432123432.123***" },
+        { 1.234321234321234e12, "1234321234321.23****" },
+        { 1.234321234321234e13, "12343212343212.3*****" },
+        { 1.234321234321234e14, "123432123432123.******" },
+        { 1.234321234321234e15, "1234321234321234.000000" },
+        { 1.234321234321234e16, "123432123432123**.000000" },
+        { 1.234321234321234e17, "123432123432123***.000000" },
+        { 1.234321234321234e18, "123432123432123****.000000" },
+        { 1.234321234321234e19, "123432123432123*****.000000" },
+        { 1.234321234321234e20, "123432123432123******.000000" },
+        { 1.234321234321234e21, "123432123432123*******.000000" },
+        { 1.234321234321234e22, "123432123432123********.000000" },
+        { 1.234321234321234e23, "123432123432123*********.000000" },
+        { 1.234321234321234e24, "123432123432123**********.000000" },
+        { 1.234321234321234e25, "123432123432123***********.000000" },
+        { 1.234321234321234e26, "123432123432123************.000000" },
+        { 1.234321234321234e27, "123432123432123*************.000000" },
+        { 1.234321234321234e28, "123432123432123**************.000000" },
+        { 1.234321234321234e29, "123432123432123***************.000000" },
+        { 1.234321234321234e30, "123432123432123****************.000000" },
+        { 1.234321234321234e31, "123432123432123*****************.000000" },
+        { 1.234321234321234e32, "123432123432123******************.000000" },
+        { 1.234321234321234e33, "123432123432123*******************.000000" },
+        { 1.234321234321234e34, "123432123432123********************.000000" },
+        { 1.234321234321234e35, "123432123432123*********************.000000" },
+        { 1.234321234321234e36, "123432123432123**********************.000000" }
+      };
+    size_t k;
+    for (k = 0; k < SIZEOF (data); k++)
+      {
+        char *result;
+        int retval =
+          my_asprintf (&result, "%f", data[k].value);
+        ASSERT (result != NULL);
+        ASSERT (strmatch (data[k].string, result));
+        ASSERT (retval == strlen (result));
+        free (result);
+      }
+  }
+
+  { /* A negative number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%f %d", -0.03125, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-0.031250 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%f %d", 0.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%f %d", minus_zerod, 33, 44, 55);
+    ASSERT (result != NULL);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%f %d", Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "inf 33") == 0
+            || strcmp (result, "infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%f %d", - Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-inf 33") == 0
+            || strcmp (result, "-infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%f %d", NaNd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Width.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%10f %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "  1.750000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_LEFT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%-10f %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.750000   33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SHOWSIGN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%+f %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "+1.750000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SPACE.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "% f %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, " 1.750000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#f %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.750000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#.f %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "2. 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with finite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%015f %d", 1234.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "00001234.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with infinite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%015f %d", - Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "           -inf 33") == 0
+            || strcmp (result, "      -infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%050f %d", NaNd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) == 50 + 3
+            && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.f %d", 1234.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1234 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with no rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.2f %d", 999.951, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "999.95 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.2f %d", 999.996, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1000.00 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", 12.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "12.750000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A larger positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", 1234567.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1234567.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Small and large positive numbers.  */
+    static struct { long double value; const char *string; } data[] =
+      {
+        { 1.234321234321234e-37L, "0.000000" },
+        { 1.234321234321234e-36L, "0.000000" },
+        { 1.234321234321234e-35L, "0.000000" },
+        { 1.234321234321234e-34L, "0.000000" },
+        { 1.234321234321234e-33L, "0.000000" },
+        { 1.234321234321234e-32L, "0.000000" },
+        { 1.234321234321234e-31L, "0.000000" },
+        { 1.234321234321234e-30L, "0.000000" },
+        { 1.234321234321234e-29L, "0.000000" },
+        { 1.234321234321234e-28L, "0.000000" },
+        { 1.234321234321234e-27L, "0.000000" },
+        { 1.234321234321234e-26L, "0.000000" },
+        { 1.234321234321234e-25L, "0.000000" },
+        { 1.234321234321234e-24L, "0.000000" },
+        { 1.234321234321234e-23L, "0.000000" },
+        { 1.234321234321234e-22L, "0.000000" },
+        { 1.234321234321234e-21L, "0.000000" },
+        { 1.234321234321234e-20L, "0.000000" },
+        { 1.234321234321234e-19L, "0.000000" },
+        { 1.234321234321234e-18L, "0.000000" },
+        { 1.234321234321234e-17L, "0.000000" },
+        { 1.234321234321234e-16L, "0.000000" },
+        { 1.234321234321234e-15L, "0.000000" },
+        { 1.234321234321234e-14L, "0.000000" },
+        { 1.234321234321234e-13L, "0.000000" },
+        { 1.234321234321234e-12L, "0.000000" },
+        { 1.234321234321234e-11L, "0.000000" },
+        { 1.234321234321234e-10L, "0.000000" },
+        { 1.234321234321234e-9L, "0.000000" },
+        { 1.234321234321234e-8L, "0.000000" },
+        { 1.234321234321234e-7L, "0.000000" },
+        { 1.234321234321234e-6L, "0.000001" },
+        { 1.234321234321234e-5L, "0.000012" },
+        { 1.234321234321234e-4L, "0.000123" },
+        { 1.234321234321234e-3L, "0.001234" },
+        { 1.234321234321234e-2L, "0.012343" },
+        { 1.234321234321234e-1L, "0.123432" },
+        { 1.234321234321234L, "1.234321" },
+        { 1.234321234321234e1L, "12.343212" },
+        { 1.234321234321234e2L, "123.432123" },
+        { 1.234321234321234e3L, "1234.321234" },
+        { 1.234321234321234e4L, "12343.212343" },
+        { 1.234321234321234e5L, "123432.123432" },
+        { 1.234321234321234e6L, "1234321.234321" },
+        { 1.234321234321234e7L, "12343212.343212" },
+        { 1.234321234321234e8L, "123432123.432123" },
+        { 1.234321234321234e9L, "1234321234.321234" },
+        { 1.234321234321234e10L, "12343212343.2123**" },
+        { 1.234321234321234e11L, "123432123432.123***" },
+        { 1.234321234321234e12L, "1234321234321.23****" },
+        { 1.234321234321234e13L, "12343212343212.3*****" },
+        { 1.234321234321234e14L, "123432123432123.******" },
+        { 1.234321234321234e15L, "1234321234321234.000000" },
+        { 1.234321234321234e16L, "123432123432123**.000000" },
+        { 1.234321234321234e17L, "123432123432123***.000000" },
+        { 1.234321234321234e18L, "123432123432123****.000000" },
+        { 1.234321234321234e19L, "123432123432123*****.000000" },
+        { 1.234321234321234e20L, "123432123432123******.000000" },
+        { 1.234321234321234e21L, "123432123432123*******.000000" },
+        { 1.234321234321234e22L, "123432123432123********.000000" },
+        { 1.234321234321234e23L, "123432123432123*********.000000" },
+        { 1.234321234321234e24L, "123432123432123**********.000000" },
+        { 1.234321234321234e25L, "123432123432123***********.000000" },
+        { 1.234321234321234e26L, "123432123432123************.000000" },
+        { 1.234321234321234e27L, "123432123432123*************.000000" },
+        { 1.234321234321234e28L, "123432123432123**************.000000" },
+        { 1.234321234321234e29L, "123432123432123***************.000000" },
+        { 1.234321234321234e30L, "123432123432123****************.000000" },
+        { 1.234321234321234e31L, "123432123432123*****************.000000" },
+        { 1.234321234321234e32L, "123432123432123******************.000000" },
+        { 1.234321234321234e33L, "123432123432123*******************.000000" },
+        { 1.234321234321234e34L, "123432123432123********************.000000" },
+        { 1.234321234321234e35L, "123432123432123*********************.000000" },
+        { 1.234321234321234e36L, "123432123432123**********************.000000" }
+      };
+    size_t k;
+    for (k = 0; k < SIZEOF (data); k++)
+      {
+        char *result;
+        int retval =
+          my_asprintf (&result, "%Lf", data[k].value);
+        ASSERT (result != NULL);
+        ASSERT (strmatch (data[k].string, result));
+        ASSERT (retval == strlen (result));
+        free (result);
+      }
+  }
+
+  { /* A negative number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", -0.03125L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-0.031250 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", 0.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", minus_zerol, 33, 44, 55);
+    ASSERT (result != NULL);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "inf 33") == 0
+            || strcmp (result, "infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", - Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-inf 33") == 0
+            || strcmp (result, "-infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", NaNl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+#if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) && !HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
+  { /* Quiet NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+  {
+    /* Signalling NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+  /* asprintf should print something for noncanonical values.  */
+  { /* Pseudo-NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Pseudo-Infinity.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Pseudo-Zero.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Unnormalized number.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Pseudo-Denormal.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lf %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+#endif
+
+  { /* Width.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%10Lf %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "  1.750000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_LEFT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%-10Lf %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.750000   33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SHOWSIGN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%+Lf %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "+1.750000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SPACE.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "% Lf %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, " 1.750000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#Lf %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.750000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#.Lf %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "2. 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with finite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%015Lf %d", 1234.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "00001234.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with infinite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%015Lf %d", - Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "           -inf 33") == 0
+            || strcmp (result, "      -infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%050Lf %d", NaNl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) == 50 + 3
+            && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.Lf %d", 1234.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1234 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with no rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.2Lf %d", 999.951L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "999.95 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.2Lf %d", 999.996L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1000.00 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  /* Test the support of the %F format directive.  */
+
+  { /* A positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%F %d", 12.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "12.750000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A larger positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%F %d", 1234567.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1234567.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A negative number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%F %d", -0.03125, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-0.031250 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%F %d", 0.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%F %d", minus_zerod, 33, 44, 55);
+    ASSERT (result != NULL);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%F %d", Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "INF 33") == 0
+            || strcmp (result, "INFINITY 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%F %d", - Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-INF 33") == 0
+            || strcmp (result, "-INFINITY 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%F %d", NaNd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 1)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%015F %d", 1234.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "00001234.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with infinite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%015F %d", - Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "           -INF 33") == 0
+            || strcmp (result, "      -INFINITY 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.F %d", 1234.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1234 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with no rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.2F %d", 999.951, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "999.95 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.2F %d", 999.996, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1000.00 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%LF %d", 12.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "12.750000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A larger positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%LF %d", 1234567.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1234567.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A negative number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%LF %d", -0.03125L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-0.031250 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%LF %d", 0.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%LF %d", minus_zerol, 33, 44, 55);
+    ASSERT (result != NULL);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%LF %d", Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "INF 33") == 0
+            || strcmp (result, "INFINITY 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%LF %d", - Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-INF 33") == 0
+            || strcmp (result, "-INFINITY 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%LF %d", NaNl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 1)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%015LF %d", 1234.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "00001234.000000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with infinite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%015LF %d", - Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "           -INF 33") == 0
+            || strcmp (result, "      -INFINITY 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.LF %d", 1234.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1234 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with no rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.2LF %d", 999.951L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "999.95 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.2LF %d", 999.996L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1000.00 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  /* Test the support of the %e format directive.  */
+
+  { /* A positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%e %d", 12.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.275000e+01 33") == 0
+            || strcmp (result, "1.275000e+001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A larger positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%e %d", 1234567.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.234567e+06 33") == 0
+            || strcmp (result, "1.234567e+006 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Small and large positive numbers.  */
+    static struct { double value; const char *string; } data[] =
+      {
+        { 1.234321234321234e-37, "1.234321e-37" },
+        { 1.234321234321234e-36, "1.234321e-36" },
+        { 1.234321234321234e-35, "1.234321e-35" },
+        { 1.234321234321234e-34, "1.234321e-34" },
+        { 1.234321234321234e-33, "1.234321e-33" },
+        { 1.234321234321234e-32, "1.234321e-32" },
+        { 1.234321234321234e-31, "1.234321e-31" },
+        { 1.234321234321234e-30, "1.234321e-30" },
+        { 1.234321234321234e-29, "1.234321e-29" },
+        { 1.234321234321234e-28, "1.234321e-28" },
+        { 1.234321234321234e-27, "1.234321e-27" },
+        { 1.234321234321234e-26, "1.234321e-26" },
+        { 1.234321234321234e-25, "1.234321e-25" },
+        { 1.234321234321234e-24, "1.234321e-24" },
+        { 1.234321234321234e-23, "1.234321e-23" },
+        { 1.234321234321234e-22, "1.234321e-22" },
+        { 1.234321234321234e-21, "1.234321e-21" },
+        { 1.234321234321234e-20, "1.234321e-20" },
+        { 1.234321234321234e-19, "1.234321e-19" },
+        { 1.234321234321234e-18, "1.234321e-18" },
+        { 1.234321234321234e-17, "1.234321e-17" },
+        { 1.234321234321234e-16, "1.234321e-16" },
+        { 1.234321234321234e-15, "1.234321e-15" },
+        { 1.234321234321234e-14, "1.234321e-14" },
+        { 1.234321234321234e-13, "1.234321e-13" },
+        { 1.234321234321234e-12, "1.234321e-12" },
+        { 1.234321234321234e-11, "1.234321e-11" },
+        { 1.234321234321234e-10, "1.234321e-10" },
+        { 1.234321234321234e-9, "1.234321e-09" },
+        { 1.234321234321234e-8, "1.234321e-08" },
+        { 1.234321234321234e-7, "1.234321e-07" },
+        { 1.234321234321234e-6, "1.234321e-06" },
+        { 1.234321234321234e-5, "1.234321e-05" },
+        { 1.234321234321234e-4, "1.234321e-04" },
+        { 1.234321234321234e-3, "1.234321e-03" },
+        { 1.234321234321234e-2, "1.234321e-02" },
+        { 1.234321234321234e-1, "1.234321e-01" },
+        { 1.234321234321234, "1.234321e+00" },
+        { 1.234321234321234e1, "1.234321e+01" },
+        { 1.234321234321234e2, "1.234321e+02" },
+        { 1.234321234321234e3, "1.234321e+03" },
+        { 1.234321234321234e4, "1.234321e+04" },
+        { 1.234321234321234e5, "1.234321e+05" },
+        { 1.234321234321234e6, "1.234321e+06" },
+        { 1.234321234321234e7, "1.234321e+07" },
+        { 1.234321234321234e8, "1.234321e+08" },
+        { 1.234321234321234e9, "1.234321e+09" },
+        { 1.234321234321234e10, "1.234321e+10" },
+        { 1.234321234321234e11, "1.234321e+11" },
+        { 1.234321234321234e12, "1.234321e+12" },
+        { 1.234321234321234e13, "1.234321e+13" },
+        { 1.234321234321234e14, "1.234321e+14" },
+        { 1.234321234321234e15, "1.234321e+15" },
+        { 1.234321234321234e16, "1.234321e+16" },
+        { 1.234321234321234e17, "1.234321e+17" },
+        { 1.234321234321234e18, "1.234321e+18" },
+        { 1.234321234321234e19, "1.234321e+19" },
+        { 1.234321234321234e20, "1.234321e+20" },
+        { 1.234321234321234e21, "1.234321e+21" },
+        { 1.234321234321234e22, "1.234321e+22" },
+        { 1.234321234321234e23, "1.234321e+23" },
+        { 1.234321234321234e24, "1.234321e+24" },
+        { 1.234321234321234e25, "1.234321e+25" },
+        { 1.234321234321234e26, "1.234321e+26" },
+        { 1.234321234321234e27, "1.234321e+27" },
+        { 1.234321234321234e28, "1.234321e+28" },
+        { 1.234321234321234e29, "1.234321e+29" },
+        { 1.234321234321234e30, "1.234321e+30" },
+        { 1.234321234321234e31, "1.234321e+31" },
+        { 1.234321234321234e32, "1.234321e+32" },
+        { 1.234321234321234e33, "1.234321e+33" },
+        { 1.234321234321234e34, "1.234321e+34" },
+        { 1.234321234321234e35, "1.234321e+35" },
+        { 1.234321234321234e36, "1.234321e+36" }
+      };
+    size_t k;
+    for (k = 0; k < SIZEOF (data); k++)
+      {
+        char *result;
+        int retval =
+          my_asprintf (&result, "%e", data[k].value);
+        const char *expected = data[k].string;
+        ASSERT (result != NULL);
+        ASSERT (strcmp (result, expected) == 0
+                /* Some implementations produce exponents with 3 digits.  */
+                || (strlen (result) == strlen (expected) + 1
+                    && memcmp (result, expected, strlen (expected) - 2) == 0
+                    && result[strlen (expected) - 2] == '0'
+                    && strcmp (result + strlen (expected) - 1,
+                               expected + strlen (expected) - 2)
+                       == 0));
+        ASSERT (retval == strlen (result));
+        free (result);
+      }
+  }
+
+  { /* A negative number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%e %d", -0.03125, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-3.125000e-02 33") == 0
+            || strcmp (result, "-3.125000e-002 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%e %d", 0.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0.000000e+00 33") == 0
+            || strcmp (result, "0.000000e+000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%e %d", minus_zerod, 33, 44, 55);
+    ASSERT (result != NULL);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000e+00 33") == 0
+              || strcmp (result, "-0.000000e+000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%e %d", Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "inf 33") == 0
+            || strcmp (result, "infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%e %d", - Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-inf 33") == 0
+            || strcmp (result, "-infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%e %d", NaNd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Width.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%15e %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "   1.750000e+00 33") == 0
+            || strcmp (result, "  1.750000e+000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_LEFT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%-15e %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.750000e+00    33") == 0
+            || strcmp (result, "1.750000e+000   33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SHOWSIGN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%+e %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "+1.750000e+00 33") == 0
+            || strcmp (result, "+1.750000e+000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SPACE.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "% e %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, " 1.750000e+00 33") == 0
+            || strcmp (result, " 1.750000e+000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#e %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.750000e+00 33") == 0
+            || strcmp (result, "1.750000e+000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#.e %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "2.e+00 33") == 0
+            || strcmp (result, "2.e+000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#.e %d", 9.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.e+01 33") == 0
+            || strcmp (result, "1.e+001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with finite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%015e %d", 1234.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0001.234000e+03 33") == 0
+            || strcmp (result, "001.234000e+003 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with infinite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%015e %d", - Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "           -inf 33") == 0
+            || strcmp (result, "      -infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%050e %d", NaNd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) == 50 + 3
+            && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.e %d", 1234.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1e+03 33") == 0
+            || strcmp (result, "1e+003 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with no rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.4e %d", 999.951, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "9.9995e+02 33") == 0
+            || strcmp (result, "9.9995e+002 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.4e %d", 999.996, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.0000e+03 33") == 0
+            || strcmp (result, "1.0000e+003 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", 12.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.275000e+01 33") == 0
+            || strcmp (result, "1.275000e+001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A larger positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", 1234567.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.234567e+06 33") == 0
+            || strcmp (result, "1.234567e+006 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Small and large positive numbers.  */
+    static struct { long double value; const char *string; } data[] =
+      {
+        { 1.234321234321234e-37L, "1.234321e-37" },
+        { 1.234321234321234e-36L, "1.234321e-36" },
+        { 1.234321234321234e-35L, "1.234321e-35" },
+        { 1.234321234321234e-34L, "1.234321e-34" },
+        { 1.234321234321234e-33L, "1.234321e-33" },
+        { 1.234321234321234e-32L, "1.234321e-32" },
+        { 1.234321234321234e-31L, "1.234321e-31" },
+        { 1.234321234321234e-30L, "1.234321e-30" },
+        { 1.234321234321234e-29L, "1.234321e-29" },
+        { 1.234321234321234e-28L, "1.234321e-28" },
+        { 1.234321234321234e-27L, "1.234321e-27" },
+        { 1.234321234321234e-26L, "1.234321e-26" },
+        { 1.234321234321234e-25L, "1.234321e-25" },
+        { 1.234321234321234e-24L, "1.234321e-24" },
+        { 1.234321234321234e-23L, "1.234321e-23" },
+        { 1.234321234321234e-22L, "1.234321e-22" },
+        { 1.234321234321234e-21L, "1.234321e-21" },
+        { 1.234321234321234e-20L, "1.234321e-20" },
+        { 1.234321234321234e-19L, "1.234321e-19" },
+        { 1.234321234321234e-18L, "1.234321e-18" },
+        { 1.234321234321234e-17L, "1.234321e-17" },
+        { 1.234321234321234e-16L, "1.234321e-16" },
+        { 1.234321234321234e-15L, "1.234321e-15" },
+        { 1.234321234321234e-14L, "1.234321e-14" },
+        { 1.234321234321234e-13L, "1.234321e-13" },
+        { 1.234321234321234e-12L, "1.234321e-12" },
+        { 1.234321234321234e-11L, "1.234321e-11" },
+        { 1.234321234321234e-10L, "1.234321e-10" },
+        { 1.234321234321234e-9L, "1.234321e-09" },
+        { 1.234321234321234e-8L, "1.234321e-08" },
+        { 1.234321234321234e-7L, "1.234321e-07" },
+        { 1.234321234321234e-6L, "1.234321e-06" },
+        { 1.234321234321234e-5L, "1.234321e-05" },
+        { 1.234321234321234e-4L, "1.234321e-04" },
+        { 1.234321234321234e-3L, "1.234321e-03" },
+        { 1.234321234321234e-2L, "1.234321e-02" },
+        { 1.234321234321234e-1L, "1.234321e-01" },
+        { 1.234321234321234L, "1.234321e+00" },
+        { 1.234321234321234e1L, "1.234321e+01" },
+        { 1.234321234321234e2L, "1.234321e+02" },
+        { 1.234321234321234e3L, "1.234321e+03" },
+        { 1.234321234321234e4L, "1.234321e+04" },
+        { 1.234321234321234e5L, "1.234321e+05" },
+        { 1.234321234321234e6L, "1.234321e+06" },
+        { 1.234321234321234e7L, "1.234321e+07" },
+        { 1.234321234321234e8L, "1.234321e+08" },
+        { 1.234321234321234e9L, "1.234321e+09" },
+        { 1.234321234321234e10L, "1.234321e+10" },
+        { 1.234321234321234e11L, "1.234321e+11" },
+        { 1.234321234321234e12L, "1.234321e+12" },
+        { 1.234321234321234e13L, "1.234321e+13" },
+        { 1.234321234321234e14L, "1.234321e+14" },
+        { 1.234321234321234e15L, "1.234321e+15" },
+        { 1.234321234321234e16L, "1.234321e+16" },
+        { 1.234321234321234e17L, "1.234321e+17" },
+        { 1.234321234321234e18L, "1.234321e+18" },
+        { 1.234321234321234e19L, "1.234321e+19" },
+        { 1.234321234321234e20L, "1.234321e+20" },
+        { 1.234321234321234e21L, "1.234321e+21" },
+        { 1.234321234321234e22L, "1.234321e+22" },
+        { 1.234321234321234e23L, "1.234321e+23" },
+        { 1.234321234321234e24L, "1.234321e+24" },
+        { 1.234321234321234e25L, "1.234321e+25" },
+        { 1.234321234321234e26L, "1.234321e+26" },
+        { 1.234321234321234e27L, "1.234321e+27" },
+        { 1.234321234321234e28L, "1.234321e+28" },
+        { 1.234321234321234e29L, "1.234321e+29" },
+        { 1.234321234321234e30L, "1.234321e+30" },
+        { 1.234321234321234e31L, "1.234321e+31" },
+        { 1.234321234321234e32L, "1.234321e+32" },
+        { 1.234321234321234e33L, "1.234321e+33" },
+        { 1.234321234321234e34L, "1.234321e+34" },
+        { 1.234321234321234e35L, "1.234321e+35" },
+        { 1.234321234321234e36L, "1.234321e+36" }
+      };
+    size_t k;
+    for (k = 0; k < SIZEOF (data); k++)
+      {
+        char *result;
+        int retval =
+          my_asprintf (&result, "%Le", data[k].value);
+        const char *expected = data[k].string;
+        ASSERT (result != NULL);
+        ASSERT (strcmp (result, expected) == 0
+                /* Some implementations produce exponents with 3 digits.  */
+                || (strlen (result) == strlen (expected) + 1
+                    && memcmp (result, expected, strlen (expected) - 2) == 0
+                    && result[strlen (expected) - 2] == '0'
+                    && strcmp (result + strlen (expected) - 1,
+                               expected + strlen (expected) - 2)
+                       == 0));
+        ASSERT (retval == strlen (result));
+        free (result);
+      }
+  }
+
+  { /* A negative number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", -0.03125L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-3.125000e-02 33") == 0
+            || strcmp (result, "-3.125000e-002 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", 0.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0.000000e+00 33") == 0
+            || strcmp (result, "0.000000e+000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", minus_zerol, 33, 44, 55);
+    ASSERT (result != NULL);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000e+00 33") == 0
+              || strcmp (result, "-0.000000e+000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "inf 33") == 0
+            || strcmp (result, "infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", - Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-inf 33") == 0
+            || strcmp (result, "-infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", NaNl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+#if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) && !HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
+  { /* Quiet NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+  {
+    /* Signalling NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+  /* asprintf should print something for noncanonical values.  */
+  { /* Pseudo-NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Pseudo-Infinity.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Pseudo-Zero.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Unnormalized number.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Pseudo-Denormal.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Le %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+#endif
+
+  { /* Width.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%15Le %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "   1.750000e+00 33") == 0
+            || strcmp (result, "  1.750000e+000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_LEFT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%-15Le %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.750000e+00    33") == 0
+            || strcmp (result, "1.750000e+000   33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SHOWSIGN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%+Le %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "+1.750000e+00 33") == 0
+            || strcmp (result, "+1.750000e+000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SPACE.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "% Le %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, " 1.750000e+00 33") == 0
+            || strcmp (result, " 1.750000e+000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#Le %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.750000e+00 33") == 0
+            || strcmp (result, "1.750000e+000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#.Le %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "2.e+00 33") == 0
+            || strcmp (result, "2.e+000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#.Le %d", 9.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.e+01 33") == 0
+            || strcmp (result, "1.e+001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with finite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%015Le %d", 1234.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0001.234000e+03 33") == 0
+            || strcmp (result, "001.234000e+003 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with infinite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%015Le %d", - Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "           -inf 33") == 0
+            || strcmp (result, "      -infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%050Le %d", NaNl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) == 50 + 3
+            && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.Le %d", 1234.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1e+03 33") == 0
+            || strcmp (result, "1e+003 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with no rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.4Le %d", 999.951L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "9.9995e+02 33") == 0
+            || strcmp (result, "9.9995e+002 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.4Le %d", 999.996L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.0000e+03 33") == 0
+            || strcmp (result, "1.0000e+003 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  /* Test the support of the %g format directive.  */
+
+  { /* A positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%g %d", 12.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "12.75 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A larger positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%g %d", 1234567.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.23457e+06 33") == 0
+            || strcmp (result, "1.23457e+006 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Small and large positive numbers.  */
+    static struct { double value; const char *string; } data[] =
+      {
+        { 1.234321234321234e-37, "1.23432e-37" },
+        { 1.234321234321234e-36, "1.23432e-36" },
+        { 1.234321234321234e-35, "1.23432e-35" },
+        { 1.234321234321234e-34, "1.23432e-34" },
+        { 1.234321234321234e-33, "1.23432e-33" },
+        { 1.234321234321234e-32, "1.23432e-32" },
+        { 1.234321234321234e-31, "1.23432e-31" },
+        { 1.234321234321234e-30, "1.23432e-30" },
+        { 1.234321234321234e-29, "1.23432e-29" },
+        { 1.234321234321234e-28, "1.23432e-28" },
+        { 1.234321234321234e-27, "1.23432e-27" },
+        { 1.234321234321234e-26, "1.23432e-26" },
+        { 1.234321234321234e-25, "1.23432e-25" },
+        { 1.234321234321234e-24, "1.23432e-24" },
+        { 1.234321234321234e-23, "1.23432e-23" },
+        { 1.234321234321234e-22, "1.23432e-22" },
+        { 1.234321234321234e-21, "1.23432e-21" },
+        { 1.234321234321234e-20, "1.23432e-20" },
+        { 1.234321234321234e-19, "1.23432e-19" },
+        { 1.234321234321234e-18, "1.23432e-18" },
+        { 1.234321234321234e-17, "1.23432e-17" },
+        { 1.234321234321234e-16, "1.23432e-16" },
+        { 1.234321234321234e-15, "1.23432e-15" },
+        { 1.234321234321234e-14, "1.23432e-14" },
+        { 1.234321234321234e-13, "1.23432e-13" },
+        { 1.234321234321234e-12, "1.23432e-12" },
+        { 1.234321234321234e-11, "1.23432e-11" },
+        { 1.234321234321234e-10, "1.23432e-10" },
+        { 1.234321234321234e-9, "1.23432e-09" },
+        { 1.234321234321234e-8, "1.23432e-08" },
+        { 1.234321234321234e-7, "1.23432e-07" },
+        { 1.234321234321234e-6, "1.23432e-06" },
+        { 1.234321234321234e-5, "1.23432e-05" },
+        { 1.234321234321234e-4, "0.000123432" },
+        { 1.234321234321234e-3, "0.00123432" },
+        { 1.234321234321234e-2, "0.0123432" },
+        { 1.234321234321234e-1, "0.123432" },
+        { 1.234321234321234, "1.23432" },
+        { 1.234321234321234e1, "12.3432" },
+        { 1.234321234321234e2, "123.432" },
+        { 1.234321234321234e3, "1234.32" },
+        { 1.234321234321234e4, "12343.2" },
+        { 1.234321234321234e5, "123432" },
+        { 1.234321234321234e6, "1.23432e+06" },
+        { 1.234321234321234e7, "1.23432e+07" },
+        { 1.234321234321234e8, "1.23432e+08" },
+        { 1.234321234321234e9, "1.23432e+09" },
+        { 1.234321234321234e10, "1.23432e+10" },
+        { 1.234321234321234e11, "1.23432e+11" },
+        { 1.234321234321234e12, "1.23432e+12" },
+        { 1.234321234321234e13, "1.23432e+13" },
+        { 1.234321234321234e14, "1.23432e+14" },
+        { 1.234321234321234e15, "1.23432e+15" },
+        { 1.234321234321234e16, "1.23432e+16" },
+        { 1.234321234321234e17, "1.23432e+17" },
+        { 1.234321234321234e18, "1.23432e+18" },
+        { 1.234321234321234e19, "1.23432e+19" },
+        { 1.234321234321234e20, "1.23432e+20" },
+        { 1.234321234321234e21, "1.23432e+21" },
+        { 1.234321234321234e22, "1.23432e+22" },
+        { 1.234321234321234e23, "1.23432e+23" },
+        { 1.234321234321234e24, "1.23432e+24" },
+        { 1.234321234321234e25, "1.23432e+25" },
+        { 1.234321234321234e26, "1.23432e+26" },
+        { 1.234321234321234e27, "1.23432e+27" },
+        { 1.234321234321234e28, "1.23432e+28" },
+        { 1.234321234321234e29, "1.23432e+29" },
+        { 1.234321234321234e30, "1.23432e+30" },
+        { 1.234321234321234e31, "1.23432e+31" },
+        { 1.234321234321234e32, "1.23432e+32" },
+        { 1.234321234321234e33, "1.23432e+33" },
+        { 1.234321234321234e34, "1.23432e+34" },
+        { 1.234321234321234e35, "1.23432e+35" },
+        { 1.234321234321234e36, "1.23432e+36" }
+      };
+    size_t k;
+    for (k = 0; k < SIZEOF (data); k++)
+      {
+        char *result;
+        int retval =
+          my_asprintf (&result, "%g", data[k].value);
+        const char *expected = data[k].string;
+        ASSERT (result != NULL);
+        ASSERT (strcmp (result, expected) == 0
+                /* Some implementations produce exponents with 3 digits.  */
+                || (expected[strlen (expected) - 4] == 'e'
+                    && strlen (result) == strlen (expected) + 1
+                    && memcmp (result, expected, strlen (expected) - 2) == 0
+                    && result[strlen (expected) - 2] == '0'
+                    && strcmp (result + strlen (expected) - 1,
+                               expected + strlen (expected) - 2)
+                       == 0));
+        ASSERT (retval == strlen (result));
+        free (result);
+      }
+  }
+
+  { /* A negative number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%g %d", -0.03125, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-0.03125 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%g %d", 0.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%g %d", minus_zerod, 33, 44, 55);
+    ASSERT (result != NULL);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%g %d", Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "inf 33") == 0
+            || strcmp (result, "infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%g %d", - Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-inf 33") == 0
+            || strcmp (result, "-infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%g %d", NaNd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Width.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%10g %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "      1.75 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_LEFT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%-10g %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.75       33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SHOWSIGN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%+g %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "+1.75 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SPACE.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "% g %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, " 1.75 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#g %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.75000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#.g %d", 1.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "2. 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#.g %d", 9.75, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.e+01 33") == 0
+            || strcmp (result, "1.e+001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with finite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%010g %d", 1234.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0000001234 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with infinite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%015g %d", - Infinityd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "           -inf 33") == 0
+            || strcmp (result, "      -infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%050g %d", NaNd (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) == 50 + 3
+            && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.g %d", 1234.0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1e+03 33") == 0
+            || strcmp (result, "1e+003 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with no rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.5g %d", 999.951, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "999.95 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.5g %d", 999.996, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", 12.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "12.75 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A larger positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", 1234567.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.23457e+06 33") == 0
+            || strcmp (result, "1.23457e+006 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Small and large positive numbers.  */
+    static struct { long double value; const char *string; } data[] =
+      {
+        { 1.234321234321234e-37L, "1.23432e-37" },
+        { 1.234321234321234e-36L, "1.23432e-36" },
+        { 1.234321234321234e-35L, "1.23432e-35" },
+        { 1.234321234321234e-34L, "1.23432e-34" },
+        { 1.234321234321234e-33L, "1.23432e-33" },
+        { 1.234321234321234e-32L, "1.23432e-32" },
+        { 1.234321234321234e-31L, "1.23432e-31" },
+        { 1.234321234321234e-30L, "1.23432e-30" },
+        { 1.234321234321234e-29L, "1.23432e-29" },
+        { 1.234321234321234e-28L, "1.23432e-28" },
+        { 1.234321234321234e-27L, "1.23432e-27" },
+        { 1.234321234321234e-26L, "1.23432e-26" },
+        { 1.234321234321234e-25L, "1.23432e-25" },
+        { 1.234321234321234e-24L, "1.23432e-24" },
+        { 1.234321234321234e-23L, "1.23432e-23" },
+        { 1.234321234321234e-22L, "1.23432e-22" },
+        { 1.234321234321234e-21L, "1.23432e-21" },
+        { 1.234321234321234e-20L, "1.23432e-20" },
+        { 1.234321234321234e-19L, "1.23432e-19" },
+        { 1.234321234321234e-18L, "1.23432e-18" },
+        { 1.234321234321234e-17L, "1.23432e-17" },
+        { 1.234321234321234e-16L, "1.23432e-16" },
+        { 1.234321234321234e-15L, "1.23432e-15" },
+        { 1.234321234321234e-14L, "1.23432e-14" },
+        { 1.234321234321234e-13L, "1.23432e-13" },
+        { 1.234321234321234e-12L, "1.23432e-12" },
+        { 1.234321234321234e-11L, "1.23432e-11" },
+        { 1.234321234321234e-10L, "1.23432e-10" },
+        { 1.234321234321234e-9L, "1.23432e-09" },
+        { 1.234321234321234e-8L, "1.23432e-08" },
+        { 1.234321234321234e-7L, "1.23432e-07" },
+        { 1.234321234321234e-6L, "1.23432e-06" },
+        { 1.234321234321234e-5L, "1.23432e-05" },
+        { 1.234321234321234e-4L, "0.000123432" },
+        { 1.234321234321234e-3L, "0.00123432" },
+        { 1.234321234321234e-2L, "0.0123432" },
+        { 1.234321234321234e-1L, "0.123432" },
+        { 1.234321234321234L, "1.23432" },
+        { 1.234321234321234e1L, "12.3432" },
+        { 1.234321234321234e2L, "123.432" },
+        { 1.234321234321234e3L, "1234.32" },
+        { 1.234321234321234e4L, "12343.2" },
+        { 1.234321234321234e5L, "123432" },
+        { 1.234321234321234e6L, "1.23432e+06" },
+        { 1.234321234321234e7L, "1.23432e+07" },
+        { 1.234321234321234e8L, "1.23432e+08" },
+        { 1.234321234321234e9L, "1.23432e+09" },
+        { 1.234321234321234e10L, "1.23432e+10" },
+        { 1.234321234321234e11L, "1.23432e+11" },
+        { 1.234321234321234e12L, "1.23432e+12" },
+        { 1.234321234321234e13L, "1.23432e+13" },
+        { 1.234321234321234e14L, "1.23432e+14" },
+        { 1.234321234321234e15L, "1.23432e+15" },
+        { 1.234321234321234e16L, "1.23432e+16" },
+        { 1.234321234321234e17L, "1.23432e+17" },
+        { 1.234321234321234e18L, "1.23432e+18" },
+        { 1.234321234321234e19L, "1.23432e+19" },
+        { 1.234321234321234e20L, "1.23432e+20" },
+        { 1.234321234321234e21L, "1.23432e+21" },
+        { 1.234321234321234e22L, "1.23432e+22" },
+        { 1.234321234321234e23L, "1.23432e+23" },
+        { 1.234321234321234e24L, "1.23432e+24" },
+        { 1.234321234321234e25L, "1.23432e+25" },
+        { 1.234321234321234e26L, "1.23432e+26" },
+        { 1.234321234321234e27L, "1.23432e+27" },
+        { 1.234321234321234e28L, "1.23432e+28" },
+        { 1.234321234321234e29L, "1.23432e+29" },
+        { 1.234321234321234e30L, "1.23432e+30" },
+        { 1.234321234321234e31L, "1.23432e+31" },
+        { 1.234321234321234e32L, "1.23432e+32" },
+        { 1.234321234321234e33L, "1.23432e+33" },
+        { 1.234321234321234e34L, "1.23432e+34" },
+        { 1.234321234321234e35L, "1.23432e+35" },
+        { 1.234321234321234e36L, "1.23432e+36" }
+      };
+    size_t k;
+    for (k = 0; k < SIZEOF (data); k++)
+      {
+        char *result;
+        int retval =
+          my_asprintf (&result, "%Lg", data[k].value);
+        const char *expected = data[k].string;
+        ASSERT (result != NULL);
+        ASSERT (strcmp (result, expected) == 0
+                /* Some implementations produce exponents with 3 digits.  */
+                || (expected[strlen (expected) - 4] == 'e'
+                    && strlen (result) == strlen (expected) + 1
+                    && memcmp (result, expected, strlen (expected) - 2) == 0
+                    && result[strlen (expected) - 2] == '0'
+                    && strcmp (result + strlen (expected) - 1,
+                               expected + strlen (expected) - 2)
+                       == 0));
+        ASSERT (retval == strlen (result));
+        free (result);
+      }
+  }
+
+  { /* A negative number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", -0.03125L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-0.03125 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", 0.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", minus_zerol, 33, 44, 55);
+    ASSERT (result != NULL);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Positive infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "inf 33") == 0
+            || strcmp (result, "infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative infinity.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", - Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "-inf 33") == 0
+            || strcmp (result, "-infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", NaNl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+#if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) && !HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
+  { /* Quiet NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+  {
+    /* Signalling NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) >= 3 + 3
+            && strisnan (result, 0, strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+  /* asprintf should print something for noncanonical values.  */
+  { /* Pseudo-NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Pseudo-Infinity.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Pseudo-Zero.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Unnormalized number.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+  { /* Pseudo-Denormal.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
+    char *result;
+    int retval =
+      my_asprintf (&result, "%Lg %d", x.value, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (retval == strlen (result));
+    ASSERT (3 < retval && strcmp (result + retval - 3, " 33") == 0);
+    free (result);
+  }
+#endif
+
+  { /* Width.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%10Lg %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "      1.75 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_LEFT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%-10Lg %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.75       33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SHOWSIGN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%+Lg %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "+1.75 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_SPACE.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "% Lg %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, " 1.75 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#Lg %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.75000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#.Lg %d", 1.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "2. 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#.Lg %d", 9.75L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.e+01 33") == 0
+            || strcmp (result, "1.e+001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with finite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%010Lg %d", 1234.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0000001234 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with infinite number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%015Lg %d", - Infinityl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "           -inf 33") == 0
+            || strcmp (result, "      -infinity 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ZERO with NaN.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%050Lg %d", NaNl (), 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strlen (result) == 50 + 3
+            && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
+            && strcmp (result + strlen (result) - 3, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.Lg %d", 1234.0L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1e+03 33") == 0
+            || strcmp (result, "1e+003 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with no rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.5Lg %d", 999.951L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "999.95 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.5Lg %d", 999.996L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1000 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  /* Test the support of the %n format directive.  */
+
+  {
+    int count = -1;
+    char *result;
+    int retval =
+      my_asprintf (&result, "%d %n", 123, &count, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "123 ") == 0);
+    ASSERT (retval == strlen (result));
+    ASSERT (count == 4);
+    free (result);
+  }
+
+  /* Test the support of the POSIX/XSI format strings with positions.  */
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%2$d %1$d", 33, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "55 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  /* Test the support of the grouping flag.  */
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%'d %d", 1234567, 99);
+    ASSERT (result != NULL);
+    ASSERT (result[strlen (result) - 1] == '9');
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  /* Test the support of the left-adjust flag.  */
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "a%*sc", -3, "b");
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "ab  c") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "a%-*sc", 3, "b");
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "ab  c") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "a%-*sc", -3, "b");
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "ab  c") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  /* Test the support of large precision.  */
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.4000d %d", 1234567, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    for (i = 0; i < 4000 - 7; i++)
+      ASSERT (result[i] == '0');
+    ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.*d %d", 4000, 1234567, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    for (i = 0; i < 4000 - 7; i++)
+      ASSERT (result[i] == '0');
+    ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.4000d %d", -1234567, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    ASSERT (result[0] == '-');
+    for (i = 0; i < 4000 - 7; i++)
+      ASSERT (result[1 + i] == '0');
+    ASSERT (strcmp (result + 1 + 4000 - 7, "1234567 99") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.4000u %d", 1234567, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    for (i = 0; i < 4000 - 7; i++)
+      ASSERT (result[i] == '0');
+    ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.4000o %d", 1234567, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    for (i = 0; i < 4000 - 7; i++)
+      ASSERT (result[i] == '0');
+    ASSERT (strcmp (result + 4000 - 7, "4553207 99") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.4000x %d", 1234567, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    for (i = 0; i < 4000 - 6; i++)
+      ASSERT (result[i] == '0');
+    ASSERT (strcmp (result + 4000 - 6, "12d687 99") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#.4000x %d", 1234567, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    ASSERT (result[0] == '0');
+    ASSERT (result[1] == 'x');
+    for (i = 0; i < 4000 - 6; i++)
+      ASSERT (result[2 + i] == '0');
+    ASSERT (strcmp (result + 2 + 4000 - 6, "12d687 99") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.4000f %d", 1.0, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    ASSERT (result[0] == '1');
+    ASSERT (result[1] == '.');
+    for (i = 0; i < 4000; i++)
+      ASSERT (result[2 + i] == '0');
+    ASSERT (strcmp (result + 2 + 4000, " 99") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  {
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.511f %d", 1.0, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    ASSERT (result[0] == '1');
+    ASSERT (result[1] == '.');
+    for (i = 0; i < 511; i++)
+      ASSERT (result[2 + i] == '0');
+    ASSERT (strcmp (result + 2 + 511, " 99") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  {
+    char input[5000];
+    char *result;
+    int retval;
+    size_t i;
+
+    for (i = 0; i < sizeof (input) - 1; i++)
+      input[i] = 'a' + ((1000000 / (i + 1)) % 26);
+    input[i] = '\0';
+    retval = my_asprintf (&result, "%.4000s %d", input, 99);
+    ASSERT (result != NULL);
+    ASSERT (memcmp (result, input, 4000) == 0);
+    ASSERT (strcmp (result + 4000, " 99") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  /* Test the support of the %s format directive.  */
+
+  /* To verify that these tests succeed, it is necessary to run them under
+     a tool that checks against invalid memory accesses, such as ElectricFence
+     or "valgrind --tool=memcheck".  */
+  {
+    size_t i;
+
+    for (i = 1; i <= 8; i++)
+      {
+        char *block;
+        char *result;
+        int retval;
+
+        block = (char *) malloc (i);
+        memcpy (block, "abcdefgh", i);
+        retval = my_asprintf (&result, "%.*s", (int) i, block);
+        ASSERT (result != NULL);
+        ASSERT (memcmp (result, block, i) == 0);
+        ASSERT (result[i] == '\0');
+        ASSERT (retval == strlen (result));
+        free (result);
+        free (block);
+      }
+  }
+#if HAVE_WCHAR_T
+  {
+    size_t i;
+
+    for (i = 1; i <= 8; i++)
+      {
+        wchar_t *block;
+        size_t j;
+        char *result;
+        int retval;
+
+        block = (wchar_t *) malloc (i * sizeof (wchar_t));
+        for (j = 0; j < i; j++)
+          block[j] = "abcdefgh"[j];
+        retval = my_asprintf (&result, "%.*ls", (int) i, block);
+        ASSERT (result != NULL);
+        ASSERT (memcmp (result, "abcdefgh", i) == 0);
+        ASSERT (result[i] == '\0');
+        ASSERT (retval == strlen (result));
+        free (result);
+        free (block);
+      }
+  }
+#endif
+}
+
+static int
+my_asprintf (char **result, const char *format, ...)
+{
+  va_list args;
+  int ret;
+
+  va_start (args, format);
+  ret = vasprintf (result, format, args);
+  va_end (args);
+  return ret;
+}
+
+static void
+test_vasprintf ()
+{
+  test_function (my_asprintf);
+}
+
+static void
+test_asprintf ()
+{
+  test_function (asprintf);
+}
+
+int
+main (int argc, char *argv[])
+{
+  test_vasprintf ();
+  test_asprintf ();
+  return 0;
+}
diff --git a/gnulib-tests/test-vasprintf.c b/gnulib-tests/test-vasprintf.c
new file mode 100644
index 0000000..021cfac
--- /dev/null
+++ b/gnulib-tests/test-vasprintf.c
@@ -0,0 +1,103 @@
+/* Test of vasprintf() and asprintf() functions.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (asprintf, int, (char **, char const *, ...));
+SIGNATURE_CHECK (vasprintf, int, (char **, char const *, va_list));
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+static int
+my_asprintf (char **result, const char *format, ...)
+{
+  va_list args;
+  int ret;
+
+  va_start (args, format);
+  ret = vasprintf (result, format, args);
+  va_end (args);
+  return ret;
+}
+
+static void
+test_vasprintf ()
+{
+  int repeat;
+
+  for (repeat = 0; repeat <= 8; repeat++)
+    {
+      char *result;
+      int retval = my_asprintf (&result, "%d", 12345);
+      ASSERT (retval == 5);
+      ASSERT (result != NULL);
+      ASSERT (strcmp (result, "12345") == 0);
+      free (result);
+    }
+
+  for (repeat = 0; repeat <= 8; repeat++)
+    {
+      char *result;
+      int retval = my_asprintf (&result, "%08lx", 12345UL);
+      ASSERT (retval == 8);
+      ASSERT (result != NULL);
+      ASSERT (strcmp (result, "00003039") == 0);
+      free (result);
+    }
+}
+
+static void
+test_asprintf ()
+{
+  int repeat;
+
+  for (repeat = 0; repeat <= 8; repeat++)
+    {
+      char *result;
+      int retval = asprintf (&result, "%d", 12345);
+      ASSERT (retval == 5);
+      ASSERT (result != NULL);
+      ASSERT (strcmp (result, "12345") == 0);
+      free (result);
+    }
+
+  for (repeat = 0; repeat <= 8; repeat++)
+    {
+      char *result;
+      int retval = asprintf (&result, "%08lx", 12345UL);
+      ASSERT (retval == 8);
+      ASSERT (result != NULL);
+      ASSERT (strcmp (result, "00003039") == 0);
+      free (result);
+    }
+}
+
+int
+main (int argc, char *argv[])
+{
+  test_vasprintf ();
+  test_asprintf ();
+  return 0;
+}
diff --git a/gnulib-tests/test-vc-list-files-cvs.sh b/gnulib-tests/test-vc-list-files-cvs.sh
new file mode 100755
index 0000000..964d1c4
--- /dev/null
+++ b/gnulib-tests/test-vc-list-files-cvs.sh
@@ -0,0 +1,53 @@
+#!/bin/sh
+# Unit tests for vc-list-files
+# Copyright (C) 2008-2020 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+tmpdir=vc-cvs
+repo=`pwd`/$tmpdir/repo
+
+fail=0
+for i in with-cvsu without; do
+  # On the first iteration, test using cvsu, if it's in your path.
+  # On the second iteration, ensure that cvsu fails, so we'll
+  # exercise the awk-using code.
+  if test $i = without; then
+    printf '%s\n' '#!/bin/sh' 'exit 1' > cvsu
+    chmod a+x cvsu
+    PATH=`pwd`:$PATH
+    export PATH
+  fi
+  ok=0
+  mkdir $tmpdir && cd $tmpdir &&
+    # without cvs, skip the test
+    { ( cvs -Q -d "$repo" init ) > /dev/null 2>&1 \
+      || skip_ "cvs not found in PATH"; } &&
+    mkdir w && cd w &&
+    mkdir d &&
+    touch d/a b c &&
+    cvs -Q -d "$repo" import -m imp m M M0 &&
+    cvs -Q -d "$repo" co m && cd m &&
+    printf '%s\n' b c d/a > expected &&
+    $BOURNE_SHELL "$abs_aux_dir/vc-list-files" | sort > actual &&
+    compare expected actual &&
+    ok=1
+  test $ok = 0 && fail=1
+done
+
+Exit $fail
diff --git a/gnulib-tests/test-vc-list-files-git.sh b/gnulib-tests/test-vc-list-files-git.sh
new file mode 100755
index 0000000..ef537f8
--- /dev/null
+++ b/gnulib-tests/test-vc-list-files-git.sh
@@ -0,0 +1,42 @@
+#!/bin/sh
+# Unit tests for vc-list-files
+# Copyright (C) 2008-2020 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+tmpdir=vc-git-$$
+GIT_DIR= GIT_WORK_TREE=; unset GIT_DIR GIT_WORK_TREE
+
+fail=1
+mkdir $tmpdir && cd $tmpdir &&
+  # without git, skip the test
+  # The double use of 'exit' is needed for the reference to $? inside the trap.
+  { ( git init -q ) > /dev/null 2>&1 \
+    || skip_ "git not found in PATH"; } &&
+  mkdir d &&
+  touch d/a b c &&
+  git config user.email "you@example.com" &&
+  git config user.name "Your Name" &&
+  git add . > /dev/null &&
+  git commit -q -a -m log &&
+  printf '%s\n' b c d/a > expected &&
+  $BOURNE_SHELL "$abs_aux_dir/vc-list-files" > actual &&
+  compare expected actual &&
+  fail=0
+
+Exit $fail
diff --git a/gnulib-tests/test-verify-try.c b/gnulib-tests/test-verify-try.c
new file mode 100644
index 0000000..c44a065
--- /dev/null
+++ b/gnulib-tests/test-verify-try.c
@@ -0,0 +1,21 @@
+/* Test the "verify" module.
+
+   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This is a separate source file, so that the execution of test-verify.sh
+   does not interfere with the building of the 'test-verify' program.  */
+
+#include "test-verify.c"
diff --git a/gnulib-tests/test-verify.c b/gnulib-tests/test-verify.c
new file mode 100644
index 0000000..498dd2f
--- /dev/null
+++ b/gnulib-tests/test-verify.c
@@ -0,0 +1,69 @@
+/* Test the "verify" module.
+
+   Copyright (C) 2005, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible.  */
+
+#include <config.h>
+
+#include "verify.h"
+
+#ifndef EXP_FAIL
+# define EXP_FAIL 0
+#endif
+
+int x;
+enum { a, b, c };
+
+#if EXP_FAIL == 1
+verify (x >= 0);                  /* should give ERROR: non-constant expression */
+#endif
+verify (c == 2);                  /* should be ok */
+#if EXP_FAIL == 2
+verify (1 + 1 == 3);              /* should give ERROR */
+#endif
+verify (1 == 1); verify (1 == 1); /* should be ok */
+
+enum
+{
+  item = verify_expr (1 == 1, 10 * 0 + 17) /* should be ok */
+};
+
+static int
+function (int n)
+{
+#if EXP_FAIL == 3
+  verify (n >= 0);                  /* should give ERROR: non-constant expression */
+#endif
+  verify (c == 2);                  /* should be ok */
+#if EXP_FAIL == 4
+  verify (1 + 1 == 3);              /* should give ERROR */
+#endif
+  verify (1 == 1); verify (1 == 1); /* should be ok */
+
+  if (n)
+    return ((void) verify_expr (1 == 1, 1), verify_expr (1 == 1, 8)); /* should be ok */
+#if EXP_FAIL == 5
+  return verify_expr (1 == 2, 5); /* should give ERROR */
+#endif
+  return 0;
+}
+
+int
+main (void)
+{
+  return !(function (0) == 0 && function (1) == 8);
+}
diff --git a/gnulib-tests/test-verify.sh b/gnulib-tests/test-verify.sh
new file mode 100755
index 0000000..1e75d55
--- /dev/null
+++ b/gnulib-tests/test-verify.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+. "${srcdir=.}/init.sh"
+
+# We are not interested in triggering bugs in the compilers and tools
+# (such as gcc 4.3.1 on openSUSE 11.0).
+unset MALLOC_PERTURB_
+
+# Rather than figure out how to invoke the compiler with the right
+# include path ourselves, we let make do it:
+(cd "$initial_cwd_" \
+ && rm -f test-verify-try.o \
+ && $MAKE test-verify-try.o >/dev/null 2>&1) \
+  || skip_ "cannot compile error-free"
+
+# Now, prove that we encounter all expected compilation failures:
+: >out
+: >err
+for i in 1 2 3 4 5; do
+  (cd "$initial_cwd_"
+   rm -f test-verify-try.o
+   $MAKE CFLAGS=-DEXP_FAIL=$i test-verify-try.o) >>out 2>>err \
+  && { warn_ "compiler didn't detect verification failure $i"; fail=1; }
+done
+
+Exit $fail
diff --git a/gnulib-tests/test-version-etc.c b/gnulib-tests/test-version-etc.c
new file mode 100644
index 0000000..5c66e85
--- /dev/null
+++ b/gnulib-tests/test-version-etc.c
@@ -0,0 +1,31 @@
+/* Test suite for version-etc.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+   This file is part of the GNUlib Library.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "version-etc.h"
+
+
+#define AUTHORS "Sergey Poznyakoff", "Eric Blake"
+
+int
+main (int argc _GL_UNUSED, char **argv)
+{
+  version_etc (stdout, "test-version-etc", "dummy", "0", AUTHORS,
+               (const char *) NULL);
+  return 0;
+}
diff --git a/gnulib-tests/test-version-etc.sh b/gnulib-tests/test-version-etc.sh
new file mode 100755
index 0000000..6e9e6c4
--- /dev/null
+++ b/gnulib-tests/test-version-etc.sh
@@ -0,0 +1,45 @@
+#! /bin/sh
+# Test suite for version-etc.
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+
+TMP=ve-expected.tmp
+LC_ALL=C
+export LC_ALL
+ERR=0
+
+cat > $TMP <<EOT
+test-version-etc (PROJECT) VERSION
+COPYRIGHT Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+
+Written by Sergey Poznyakoff and Eric Blake.
+EOT
+
+${CHECKER} test-version-etc${EXEEXT} --version |
+ sed '1s/test-version-etc (.*) .*/test-version-etc (PROJECT) VERSION/
+      /^Packaged by/d
+      2,3 s/Copyright (C) [0-9]\{4,4\}/COPYRIGHT/' |
+ tr -d '\015' |
+ compare $TMP - || ERR=1
+
+rm $TMP
+
+exit $ERR
diff --git a/gnulib-tests/test-vfprintf-posix.c b/gnulib-tests/test-vfprintf-posix.c
new file mode 100644
index 0000000..1dd9480
--- /dev/null
+++ b/gnulib-tests/test-vfprintf-posix.c
@@ -0,0 +1,52 @@
+/* Test of POSIX compatible vfprintf() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (vfprintf, int, (FILE *, char const *, va_list));
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "macros.h"
+
+#include "test-fprintf-posix.h"
+
+static int
+my_fprintf (FILE *fp, const char *format, ...)
+{
+  va_list args;
+  int ret;
+
+  va_start (args, format);
+  ret = vfprintf (fp, format, args);
+  va_end (args);
+  return ret;
+}
+
+int
+main (int argc, char *argv[])
+{
+  test_function (my_fprintf);
+  return 0;
+}
diff --git a/gnulib-tests/test-vfprintf-posix.sh b/gnulib-tests/test-vfprintf-posix.sh
new file mode 100755
index 0000000..d8ced96
--- /dev/null
+++ b/gnulib-tests/test-vfprintf-posix.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+tmpfiles=""
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles="$tmpfiles t-vfprintf-posix.tmp t-vfprintf-posix.out"
+${CHECKER} ./test-vfprintf-posix${EXEEXT} > t-vfprintf-posix.tmp || exit 1
+LC_ALL=C tr -d '\r' < t-vfprintf-posix.tmp > t-vfprintf-posix.out || exit 1
+
+: ${DIFF=diff}
+${DIFF} "${srcdir}/test-printf-posix.output" t-vfprintf-posix.out
+result=$?
+
+rm -fr $tmpfiles
+
+exit $result
diff --git a/gnulib-tests/test-vprintf-posix.c b/gnulib-tests/test-vprintf-posix.c
new file mode 100644
index 0000000..6fa7ef8
--- /dev/null
+++ b/gnulib-tests/test-vprintf-posix.c
@@ -0,0 +1,52 @@
+/* Test of POSIX compatible vfprintf() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (vprintf, int, (char const *, va_list));
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "macros.h"
+
+#include "test-printf-posix.h"
+
+static int
+my_printf (const char *format, ...)
+{
+  va_list args;
+  int ret;
+
+  va_start (args, format);
+  ret = vprintf (format, args);
+  va_end (args);
+  return ret;
+}
+
+int
+main (int argc, char *argv[])
+{
+  test_function (my_printf);
+  return 0;
+}
diff --git a/gnulib-tests/test-vprintf-posix.sh b/gnulib-tests/test-vprintf-posix.sh
new file mode 100755
index 0000000..911c980
--- /dev/null
+++ b/gnulib-tests/test-vprintf-posix.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+tmpfiles=""
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles="$tmpfiles t-vprintf-posix.tmp t-vprintf-posix.out"
+${CHECKER} ./test-vprintf-posix${EXEEXT} > t-vprintf-posix.tmp || exit 1
+LC_ALL=C tr -d '\r' < t-vprintf-posix.tmp > t-vprintf-posix.out || exit 1
+
+: ${DIFF=diff}
+${DIFF} "${srcdir}/test-printf-posix.output" t-vprintf-posix.out
+result=$?
+
+rm -fr $tmpfiles
+
+exit $result
diff --git a/gnulib-tests/test-wchar.c b/gnulib-tests/test-wchar.c
new file mode 100644
index 0000000..7069b60
--- /dev/null
+++ b/gnulib-tests/test-wchar.c
@@ -0,0 +1,37 @@
+/* Test of <wchar.h> substitute.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include "verify.h"
+
+/* Check that the types wchar_t and wint_t are defined.  */
+wchar_t a = 'c';
+wint_t b = 'x';
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/gnulib-tests/test-wcrtomb-w32-1.sh b/gnulib-tests/test-wcrtomb-w32-1.sh
new file mode 100755
index 0000000..b01c543
--- /dev/null
+++ b/gnulib-tests/test-wcrtomb-w32-1.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP1252 locale.
+${CHECKER} ./test-wcrtomb-w32${EXEEXT} French_France 1252
diff --git a/gnulib-tests/test-wcrtomb-w32-2.sh b/gnulib-tests/test-wcrtomb-w32-2.sh
new file mode 100755
index 0000000..5481634
--- /dev/null
+++ b/gnulib-tests/test-wcrtomb-w32-2.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP1256 locale.
+${CHECKER} ./test-wcrtomb-w32${EXEEXT} "Arabic_Saudi Arabia" 1256
diff --git a/gnulib-tests/test-wcrtomb-w32-3.sh b/gnulib-tests/test-wcrtomb-w32-3.sh
new file mode 100755
index 0000000..f35879d
--- /dev/null
+++ b/gnulib-tests/test-wcrtomb-w32-3.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP932 locale.
+${CHECKER} ./test-wcrtomb-w32${EXEEXT} Japanese_Japan 932
diff --git a/gnulib-tests/test-wcrtomb-w32-4.sh b/gnulib-tests/test-wcrtomb-w32-4.sh
new file mode 100755
index 0000000..8eec6cb
--- /dev/null
+++ b/gnulib-tests/test-wcrtomb-w32-4.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP950 locale.
+${CHECKER} ./test-wcrtomb-w32${EXEEXT} Chinese_Taiwan 950
diff --git a/gnulib-tests/test-wcrtomb-w32-5.sh b/gnulib-tests/test-wcrtomb-w32-5.sh
new file mode 100755
index 0000000..fd47d6f
--- /dev/null
+++ b/gnulib-tests/test-wcrtomb-w32-5.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP936 locale.
+${CHECKER} ./test-wcrtomb-w32${EXEEXT} Chinese_China 936
diff --git a/gnulib-tests/test-wcrtomb-w32-6.sh b/gnulib-tests/test-wcrtomb-w32-6.sh
new file mode 100755
index 0000000..802237d
--- /dev/null
+++ b/gnulib-tests/test-wcrtomb-w32-6.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a GB18030 locale.
+${CHECKER} ./test-wcrtomb-w32${EXEEXT} Chinese_China 54936
diff --git a/gnulib-tests/test-wcrtomb-w32-7.sh b/gnulib-tests/test-wcrtomb-w32-7.sh
new file mode 100755
index 0000000..fb04e58
--- /dev/null
+++ b/gnulib-tests/test-wcrtomb-w32-7.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test some UTF-8 locales.
+${CHECKER} ./test-wcrtomb-w32${EXEEXT} French_France Japanese_Japan Chinese_Taiwan Chinese_China 65001
diff --git a/gnulib-tests/test-wcrtomb-w32.c b/gnulib-tests/test-wcrtomb-w32.c
new file mode 100644
index 0000000..0f02ed2
--- /dev/null
+++ b/gnulib-tests/test-wcrtomb-w32.c
@@ -0,0 +1,337 @@
+/* Test of conversion of wide character to multibyte character.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "localcharset.h"
+#include "macros.h"
+
+#if defined _WIN32 && !defined __CYGWIN__
+
+static int
+test_one_locale (const char *name, int codepage)
+{
+  char buf[64];
+  size_t ret;
+
+# if 1
+  /* Portable code to set the locale.  */
+  {
+    char name_with_codepage[1024];
+
+    sprintf (name_with_codepage, "%s.%d", name, codepage);
+
+    /* Set the locale.  */
+    if (setlocale (LC_ALL, name_with_codepage) == NULL)
+      return 77;
+  }
+# else
+  /* Hacky way to set a locale.codepage combination that setlocale() refuses
+     to set.  */
+  {
+    /* Codepage of the current locale, set with setlocale().
+       Not necessarily the same as GetACP().  */
+    extern __declspec(dllimport) unsigned int __lc_codepage;
+
+    /* Set the locale.  */
+    if (setlocale (LC_ALL, name) == NULL)
+      return 77;
+
+    /* Clobber the codepage and MB_CUR_MAX, both set by setlocale().  */
+    __lc_codepage = codepage;
+    switch (codepage)
+      {
+      case 1252:
+      case 1256:
+        MB_CUR_MAX = 1;
+        break;
+      case 932:
+      case 950:
+      case 936:
+        MB_CUR_MAX = 2;
+        break;
+      case 54936:
+      case 65001:
+        MB_CUR_MAX = 4;
+        break;
+      }
+
+    /* Test whether the codepage is really available.  */
+    {
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, " ", 1, &state) == (size_t)(-1))
+        return 77;
+    }
+  }
+# endif
+
+  /* Test NUL character.  */
+  {
+    buf[0] = 'x';
+    ret = wcrtomb (buf, 0, NULL);
+    ASSERT (ret == 1);
+    ASSERT (buf[0] == '\0');
+  }
+
+  /* Test single bytes.  */
+  {
+    int c;
+
+    for (c = 0; c < 0x100; c++)
+      switch (c)
+        {
+        case '\t': case '\v': case '\f':
+        case ' ': case '!': case '"': case '#': case '%':
+        case '&': case '\'': case '(': case ')': case '*':
+        case '+': case ',': case '-': case '.': case '/':
+        case '0': case '1': case '2': case '3': case '4':
+        case '5': case '6': case '7': case '8': case '9':
+        case ':': case ';': case '<': case '=': case '>':
+        case '?':
+        case 'A': case 'B': case 'C': case 'D': case 'E':
+        case 'F': case 'G': case 'H': case 'I': case 'J':
+        case 'K': case 'L': case 'M': case 'N': case 'O':
+        case 'P': case 'Q': case 'R': case 'S': case 'T':
+        case 'U': case 'V': case 'W': case 'X': case 'Y':
+        case 'Z':
+        case '[': case '\\': case ']': case '^': case '_':
+        case 'a': case 'b': case 'c': case 'd': case 'e':
+        case 'f': case 'g': case 'h': case 'i': case 'j':
+        case 'k': case 'l': case 'm': case 'n': case 'o':
+        case 'p': case 'q': case 'r': case 's': case 't':
+        case 'u': case 'v': case 'w': case 'x': case 'y':
+        case 'z': case '{': case '|': case '}': case '~':
+          /* c is in the ISO C "basic character set".  */
+          ret = wcrtomb (buf, btowc (c), NULL);
+          ASSERT (ret == 1);
+          ASSERT (buf[0] == (char) c);
+          break;
+        }
+  }
+
+  /* Test special calling convention, passing a NULL pointer.  */
+  {
+    ret = wcrtomb (NULL, '\0', NULL);
+    ASSERT (ret == 1);
+    ret = wcrtomb (NULL, btowc ('x'), NULL);
+    ASSERT (ret == 1);
+  }
+
+  switch (codepage)
+    {
+    case 1252:
+      /* Locale encoding is CP1252, an extension of ISO-8859-1.  */
+      {
+        /* Convert "B\374\337er": "Büßer" */
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x00FC, NULL);
+        ASSERT (ret == 1);
+        ASSERT (memcmp (buf, "\374", 1) == 0);
+        ASSERT (buf[1] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x00DF, NULL);
+        ASSERT (ret == 1);
+        ASSERT (memcmp (buf, "\337", 1) == 0);
+        ASSERT (buf[1] == 'x');
+      }
+      return 0;
+
+    case 1256:
+      /* Locale encoding is CP1256, not the same as ISO-8859-6.  */
+      {
+        /* Convert "x\302\341\346y": "xآلوy" */
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x0622, NULL);
+        ASSERT (ret == 1);
+        ASSERT (memcmp (buf, "\302", 1) == 0);
+        ASSERT (buf[1] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x0644, NULL);
+        ASSERT (ret == 1);
+        ASSERT (memcmp (buf, "\341", 1) == 0);
+        ASSERT (buf[1] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x0648, NULL);
+        ASSERT (ret == 1);
+        ASSERT (memcmp (buf, "\346", 1) == 0);
+        ASSERT (buf[1] == 'x');
+      }
+      return 0;
+
+    case 932:
+      /* Locale encoding is CP932, similar to Shift_JIS.  */
+      {
+        /* Convert "<\223\372\226\173\214\352>": "<日本語>" */
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x65E5, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\223\372", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x672C, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\226\173", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x8A9E, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\214\352", 2) == 0);
+        ASSERT (buf[2] == 'x');
+      }
+      return 0;
+
+    case 950:
+      /* Locale encoding is CP950, similar to Big5.  */
+      {
+        /* Convert "<\244\351\245\273\273\171>": "<日本語>" */
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x65E5, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\244\351", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x672C, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\245\273", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x8A9E, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\273\171", 2) == 0);
+        ASSERT (buf[2] == 'x');
+      }
+      return 0;
+
+    case 936:
+      /* Locale encoding is CP936 = GBK, an extension of GB2312.  */
+      {
+        /* Convert "<\310\325\261\276\325\132>": "<日本語>" */
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x65E5, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\310\325", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x672C, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\261\276", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x8A9E, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\325\132", 2) == 0);
+        ASSERT (buf[2] == 'x');
+      }
+      return 0;
+
+    case 54936:
+      /* Locale encoding is CP54936 = GB18030.  */
+      if (strcmp (locale_charset (), "GB18030") != 0)
+        return 77;
+      {
+        /* Convert "B\250\271\201\060\211\070er": "Büßer" */
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x00FC, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\250\271", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x00DF, NULL);
+        ASSERT (ret == 4);
+        ASSERT (memcmp (buf, "\201\060\211\070", 4) == 0);
+        ASSERT (buf[4] == 'x');
+      }
+      return 0;
+
+    case 65001:
+      /* Locale encoding is CP65001 = UTF-8.  */
+      if (strcmp (locale_charset (), "UTF-8") != 0)
+        return 77;
+      {
+        /* Convert "B\303\274\303\237er": "Büßer" */
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x00FC, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\303\274", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x00DF, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\303\237", 2) == 0);
+        ASSERT (buf[2] == 'x');
+      }
+      return 0;
+
+    default:
+      return 1;
+    }
+}
+
+int
+main (int argc, char *argv[])
+{
+  int codepage = atoi (argv[argc - 1]);
+  int result;
+  int i;
+
+  result = 77;
+  for (i = 1; i < argc - 1; i++)
+    {
+      int ret = test_one_locale (argv[i], codepage);
+
+      if (ret != 77)
+        result = ret;
+    }
+
+  if (result == 77)
+    {
+      fprintf (stderr, "Skipping test: found no locale with codepage %d\n",
+               codepage);
+    }
+  return result;
+}
+
+#else
+
+int
+main (int argc, char *argv[])
+{
+  fputs ("Skipping test: not a native Windows system\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/gnulib-tests/test-wcrtomb.c b/gnulib-tests/test-wcrtomb.c
new file mode 100644
index 0000000..3924d59
--- /dev/null
+++ b/gnulib-tests/test-wcrtomb.c
@@ -0,0 +1,166 @@
+/* Test of conversion of wide character to multibyte character.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (wcrtomb, size_t, (char *, wchar_t, mbstate_t *));
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+/* Check the multibyte character s[0..n-1].  */
+static void
+check_character (const char *s, size_t n)
+{
+  wchar_t wc;
+  char buf[64];
+  int iret;
+  size_t ret;
+
+  wc = (wchar_t) 0xBADFACE;
+  iret = mbtowc (&wc, s, n);
+  ASSERT (iret == n);
+
+  ret = wcrtomb (buf, wc, NULL);
+  ASSERT (ret == n);
+  ASSERT (memcmp (buf, s, n) == 0);
+
+  /* Test special calling convention, passing a NULL pointer.  */
+  ret = wcrtomb (NULL, wc, NULL);
+  ASSERT (ret == 1);
+}
+
+int
+main (int argc, char *argv[])
+{
+  char buf[64];
+  size_t ret;
+
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  /* Test NUL character.  */
+  {
+    buf[0] = 'x';
+    ret = wcrtomb (buf, 0, NULL);
+    ASSERT (ret == 1);
+    ASSERT (buf[0] == '\0');
+  }
+
+  /* Test single bytes.  */
+  {
+    int c;
+
+    for (c = 0; c < 0x100; c++)
+      switch (c)
+        {
+        case '\t': case '\v': case '\f':
+        case ' ': case '!': case '"': case '#': case '%':
+        case '&': case '\'': case '(': case ')': case '*':
+        case '+': case ',': case '-': case '.': case '/':
+        case '0': case '1': case '2': case '3': case '4':
+        case '5': case '6': case '7': case '8': case '9':
+        case ':': case ';': case '<': case '=': case '>':
+        case '?':
+        case 'A': case 'B': case 'C': case 'D': case 'E':
+        case 'F': case 'G': case 'H': case 'I': case 'J':
+        case 'K': case 'L': case 'M': case 'N': case 'O':
+        case 'P': case 'Q': case 'R': case 'S': case 'T':
+        case 'U': case 'V': case 'W': case 'X': case 'Y':
+        case 'Z':
+        case '[': case '\\': case ']': case '^': case '_':
+        case 'a': case 'b': case 'c': case 'd': case 'e':
+        case 'f': case 'g': case 'h': case 'i': case 'j':
+        case 'k': case 'l': case 'm': case 'n': case 'o':
+        case 'p': case 'q': case 'r': case 's': case 't':
+        case 'u': case 'v': case 'w': case 'x': case 'y':
+        case 'z': case '{': case '|': case '}': case '~':
+          /* c is in the ISO C "basic character set".  */
+          ret = wcrtomb (buf, btowc (c), NULL);
+          ASSERT (ret == 1);
+          ASSERT (buf[0] == (char) c);
+          break;
+        }
+  }
+
+  /* Test special calling convention, passing a NULL pointer.  */
+  {
+    ret = wcrtomb (NULL, '\0', NULL);
+    ASSERT (ret == 1);
+    ret = wcrtomb (NULL, btowc ('x'), NULL);
+    ASSERT (ret == 1);
+  }
+
+  if (argc > 1)
+    switch (argv[1][0])
+      {
+      case '1':
+        /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
+        {
+          const char input[] = "B\374\337er"; /* "Büßer" */
+
+          check_character (input + 1, 1);
+          check_character (input + 2, 1);
+        }
+        return 0;
+
+      case '2':
+        /* Locale encoding is UTF-8.  */
+        {
+          const char input[] = "B\303\274\303\237er"; /* "Büßer" */
+
+          check_character (input + 1, 2);
+          check_character (input + 3, 2);
+        }
+        return 0;
+
+      case '3':
+        /* Locale encoding is EUC-JP.  */
+        {
+          const char input[] = "<\306\374\313\334\270\354>"; /* "<日本語>" */
+
+          check_character (input + 1, 2);
+          check_character (input + 3, 2);
+          check_character (input + 5, 2);
+        }
+        return 0;
+
+      case '4':
+        /* Locale encoding is GB18030.  */
+        {
+          const char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
+
+          check_character (input + 1, 2);
+          check_character (input + 3, 4);
+        }
+        return 0;
+
+      case '5':
+        /* C locale; tested above.  */
+        return 0;
+      }
+
+  return 1;
+}
diff --git a/gnulib-tests/test-wcrtomb.sh b/gnulib-tests/test-wcrtomb.sh
new file mode 100755
index 0000000..1a31b6e
--- /dev/null
+++ b/gnulib-tests/test-wcrtomb.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+
+# Test in an ISO-8859-1 or ISO-8859-15 locale.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR \
+  ${CHECKER} ./test-wcrtomb${EXEEXT} 1 \
+  || exit 1
+fi
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 != none; then
+  LC_ALL=$LOCALE_FR_UTF8 \
+  ${CHECKER} ./test-wcrtomb${EXEEXT} 2 \
+  || exit 1
+fi
+
+# Test whether a specific EUC-JP locale is installed.
+: ${LOCALE_JA=ja_JP}
+if test $LOCALE_JA != none; then
+  LC_ALL=$LOCALE_JA \
+  ${CHECKER} ./test-wcrtomb${EXEEXT} 3 \
+  || exit 1
+fi
+
+# Test whether a specific GB18030 locale is installed.
+: ${LOCALE_ZH_CN=zh_CN.GB18030}
+if test $LOCALE_ZH_CN != none; then
+  LC_ALL=$LOCALE_ZH_CN \
+  ${CHECKER} ./test-wcrtomb${EXEEXT} 4 \
+  || exit 1
+fi
+
+# Test in the POSIX locale.
+LC_ALL=C     ${CHECKER} ./test-wcrtomb${EXEEXT} 5 || exit 1
+LC_ALL=POSIX ${CHECKER} ./test-wcrtomb${EXEEXT} 5 || exit 1
+
+exit 0
diff --git a/gnulib-tests/test-wctype-h.c b/gnulib-tests/test-wctype-h.c
new file mode 100644
index 0000000..e1c4e23
--- /dev/null
+++ b/gnulib-tests/test-wctype-h.c
@@ -0,0 +1,74 @@
+/* Test of <wctype.h> substitute.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <wctype.h>
+
+#include "macros.h"
+
+/* Check that the type wint_t is defined.  */
+wint_t a = 'x';
+/* Check that WEOF is defined.  */
+wint_t e = WEOF;
+
+/* Check that the type wctype_t is defined.  */
+wctype_t p;
+
+/* Check that the type wctrans_t is defined.  */
+wctrans_t q;
+
+int
+main (void)
+{
+  /* Check that the isw* functions exist as functions or as macros.  */
+  (void) iswalnum (0);
+  (void) iswalpha (0);
+  (void) iswcntrl (0);
+  (void) iswdigit (0);
+  (void) iswgraph (0);
+  (void) iswlower (0);
+  (void) iswprint (0);
+  (void) iswpunct (0);
+  (void) iswspace (0);
+  (void) iswupper (0);
+  (void) iswxdigit (0);
+
+  /* Check that the isw* functions map WEOF to 0.  */
+  ASSERT (!iswalnum (e));
+  ASSERT (!iswalpha (e));
+  ASSERT (!iswcntrl (e));
+  ASSERT (!iswdigit (e));
+  ASSERT (!iswgraph (e));
+  ASSERT (!iswlower (e));
+  ASSERT (!iswprint (e));
+  ASSERT (!iswpunct (e));
+  ASSERT (!iswspace (e));
+  ASSERT (!iswupper (e));
+  ASSERT (!iswxdigit (e));
+
+  /* Check that the tow* functions exist as functions or as macros.  */
+  (void) towlower (0);
+  (void) towupper (0);
+
+  /* Check that the tow* functions map WEOF to WEOF.  */
+  ASSERT (towlower (e) == e);
+  ASSERT (towupper (e) == e);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-wcwidth.c b/gnulib-tests/test-wcwidth.c
new file mode 100644
index 0000000..7aaf820
--- /dev/null
+++ b/gnulib-tests/test-wcwidth.c
@@ -0,0 +1,106 @@
+/* Test of wcwidth() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (wcwidth, int, (wchar_t));
+
+#include <locale.h>
+#include <string.h>
+
+#include "c-ctype.h"
+#include "localcharset.h"
+#include "macros.h"
+
+int
+main ()
+{
+  wchar_t wc;
+
+#if !GNULIB_WCHAR_SINGLE
+# ifdef C_CTYPE_ASCII
+  /* Test width of ASCII characters.  */
+  for (wc = 0x20; wc < 0x7F; wc++)
+    ASSERT (wcwidth (wc) == 1);
+# endif
+#endif
+
+  /* Switch to an UTF-8 locale.  */
+  if (setlocale (LC_ALL, "fr_FR.UTF-8") != NULL
+      /* Check whether it's really an UTF-8 locale.
+         On OpenBSD 4.0, the setlocale call succeeds only for the LC_CTYPE
+         category and therefore returns "C/fr_FR.UTF-8/C/C/C/C", but the
+         LC_CTYPE category is effectively set to an ASCII LC_CTYPE category;
+         in particular, locale_charset() returns "ASCII".  */
+      && strcmp (locale_charset (), "UTF-8") == 0)
+    {
+      /* Test width of ASCII characters.  */
+      for (wc = 0x20; wc < 0x7F; wc++)
+        ASSERT (wcwidth (wc) == 1);
+
+      /* Test width of some non-spacing characters.  */
+      ASSERT (wcwidth (0x0301) == 0);
+      ASSERT (wcwidth (0x05B0) == 0);
+
+      /* Test width of some format control characters.  */
+      ASSERT (wcwidth (0x200E) <= 0);
+      ASSERT (wcwidth (0x2060) <= 0);
+#if 0  /* wchar_t may be only 16 bits.  */
+      ASSERT (wcwidth (0xE0001) <= 0);
+      ASSERT (wcwidth (0xE0044) <= 0);
+#endif
+
+      /* Test width of some zero width characters.  */
+      /* While it is desirable that U+200B, U+200C, U+200D have width 0,
+         because this makes wcswidth work better on strings that contain these
+         characters, it is acceptable if an implementation treats these
+         characters like control characters.  */
+      ASSERT (wcwidth (0x200B) <= 0);
+      ASSERT (wcwidth (0xFEFF) <= 0);
+
+      /* Test width of some math symbols.
+         U+2202 is marked as having ambiguous width (A) in EastAsianWidth.txt
+         (see <https://www.unicode.org/Public/12.0.0/ucd/EastAsianWidth.txt>).
+         The Unicode Standard Annex 11
+         <https://www.unicode.org/reports/tr11/tr11-36.html>
+         says
+           "Ambiguous characters behave like wide or narrow characters
+            depending on the context (language tag, script identification,
+            associated font, source of data, or explicit markup; all can
+            provide the context). If the context cannot be established
+            reliably, they should be treated as narrow characters by default."
+         For wcwidth(), the only available context information is the locale.
+         "fr_FR.UTF-8" is a Western locale, not an East Asian locale, therefore
+         U+2202 should be treated like a narrow character.  */
+      ASSERT (wcwidth (0x2202) == 1);
+
+      /* Test width of some CJK characters.  */
+      ASSERT (wcwidth (0x3000) == 2);
+      ASSERT (wcwidth (0xB250) == 2);
+      ASSERT (wcwidth (0xFF1A) == 2);
+#if 0  /* wchar_t may be only 16 bits.  */
+      ASSERT (wcwidth (0x20369) == 2);
+      ASSERT (wcwidth (0x2F876) == 2);
+#endif
+    }
+
+  return 0;
+}
diff --git a/gnulib-tests/test-write.c b/gnulib-tests/test-write.c
new file mode 100644
index 0000000..1bff5ed
--- /dev/null
+++ b/gnulib-tests/test-write.c
@@ -0,0 +1,79 @@
+/* Test the write() function.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (write, ssize_t, (int, const void *, size_t));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  const char *filename = "test-write.tmp";
+  int fd;
+
+  /* Create a file with a simple contents.  */
+  fd = open (filename, O_CREAT | O_WRONLY, 0600);
+  ASSERT (fd >= 0);
+  ASSERT (write (fd, "Hello World", 11) == 11);
+  ASSERT (close (fd) == 0);
+
+  /* Write into the middle of the file.  */
+  fd = open (filename, O_WRONLY);
+  ASSERT (fd >= 0);
+  ASSERT (lseek (fd, 6, SEEK_SET) == 6);
+  ASSERT (write (fd, "fascination", 11) == 11);
+
+  /* Verify the contents of the file.  */
+  {
+    char buf[64];
+    int rfd = open (filename, O_RDONLY);
+    ASSERT (rfd >= 0);
+    ASSERT (read (rfd, buf, sizeof (buf)) == 17);
+    ASSERT (close (rfd) == 0);
+    ASSERT (memcmp (buf, "Hello fascination", 17) == 0);
+  }
+
+  ASSERT (close (fd) == 0);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    char byte = 'x';
+    errno = 0;
+    ASSERT (write (-1, &byte, 1) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    char byte = 'x';
+    close (99);
+    errno = 0;
+    ASSERT (write (99, &byte, 1) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Clean up.  */
+  unlink (filename);
+
+  return 0;
+}
diff --git a/gnulib-tests/test-xalloc-die.c b/gnulib-tests/test-xalloc-die.c
new file mode 100644
index 0000000..7f0069e
--- /dev/null
+++ b/gnulib-tests/test-xalloc-die.c
@@ -0,0 +1,28 @@
+/* Test of xalloc_die() function.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson <simon@josefsson.org>, 2009.  */
+
+#include <config.h>
+
+#include "xalloc.h"
+
+int
+main (int argc _GL_UNUSED, char **argv)
+{
+  xalloc_die ();
+  return 0;
+}
diff --git a/gnulib-tests/test-xalloc-die.sh b/gnulib-tests/test-xalloc-die.sh
new file mode 100755
index 0000000..033084b
--- /dev/null
+++ b/gnulib-tests/test-xalloc-die.sh
@@ -0,0 +1,36 @@
+#!/bin/sh
+# Test suite for xalloc_die.
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+
+${CHECKER} test-xalloc-die${EXEEXT} > out 2> err
+case $? in
+  1) ;;
+  *) Exit 1;;
+esac
+
+tr -d '\015' < err \
+  | sed 's,.*test-xalloc-die[.ex]*:,test-xalloc-die:,' > err2 || Exit 1
+
+compare - err2 <<\EOF || Exit 1
+test-xalloc-die: memory exhausted
+EOF
+
+test -s out && Exit 1
+
+Exit $fail
diff --git a/gnulib-tests/test-xfprintf-posix.c b/gnulib-tests/test-xfprintf-posix.c
new file mode 100644
index 0000000..45159b9
--- /dev/null
+++ b/gnulib-tests/test-xfprintf-posix.c
@@ -0,0 +1,37 @@
+/* Test of error-checking xfprintf() function with POSIX compatible formatting.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "xprintf.h"
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "macros.h"
+
+#include "test-fprintf-posix.h"
+
+int
+main (int argc _GL_UNUSED, char *argv[])
+{
+  test_function (xfprintf);
+  return 0;
+}
diff --git a/gnulib-tests/test-xprintf-posix.c b/gnulib-tests/test-xprintf-posix.c
new file mode 100644
index 0000000..e34d75a
--- /dev/null
+++ b/gnulib-tests/test-xprintf-posix.c
@@ -0,0 +1,36 @@
+/* Test of error-checking xprintf() function with POSIX compatible formatting.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "xprintf.h"
+
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "macros.h"
+
+#include "test-printf-posix.h"
+
+int
+main (int argc _GL_UNUSED, char *argv[])
+{
+  test_function (xprintf);
+  return 0;
+}
diff --git a/gnulib-tests/test-xprintf-posix.sh b/gnulib-tests/test-xprintf-posix.sh
new file mode 100755
index 0000000..2a67197
--- /dev/null
+++ b/gnulib-tests/test-xprintf-posix.sh
@@ -0,0 +1,24 @@
+#!/bin/sh
+
+tmpfiles=""
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles="$tmpfiles t-xprintf-posix.tmp t-xprintf-posix.out"
+${CHECKER} ./test-xprintf-posix${EXEEXT} > t-xprintf-posix.tmp || exit 1
+LC_ALL=C tr -d '\r' < t-xprintf-posix.tmp > t-xprintf-posix.out || exit 1
+
+: ${DIFF=diff}
+${DIFF} "${srcdir}/test-printf-posix.output" t-xprintf-posix.out
+test $? = 0 || { rm -fr $tmpfiles; exit 1; }
+
+tmpfiles="$tmpfiles t-xfprintf-posix.tmp t-xfprintf-posix.out"
+${CHECKER} ./test-xfprintf-posix${EXEEXT} > t-xfprintf-posix.tmp || exit 1
+LC_ALL=C tr -d '\r' < t-xfprintf-posix.tmp > t-xfprintf-posix.out || exit 1
+
+: ${DIFF=diff}
+${DIFF} "${srcdir}/test-printf-posix.output" t-xfprintf-posix.out
+test $? = 0 || { rm -fr $tmpfiles; exit 1; }
+
+rm -fr $tmpfiles
+
+exit 0
diff --git a/gnulib-tests/test-xstrtoimax.c b/gnulib-tests/test-xstrtoimax.c
new file mode 100644
index 0000000..cc2f6ae
--- /dev/null
+++ b/gnulib-tests/test-xstrtoimax.c
@@ -0,0 +1,4 @@
+#define __xstrtol xstrtoimax
+#define __strtol_t intmax_t
+#define __spec PRIdMAX
+#include "test-xstrtol.c"
diff --git a/gnulib-tests/test-xstrtoimax.sh b/gnulib-tests/test-xstrtoimax.sh
new file mode 100755
index 0000000..6a48e67
--- /dev/null
+++ b/gnulib-tests/test-xstrtoimax.sh
@@ -0,0 +1,46 @@
+#!/bin/sh
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+too_big=99999999999999999999999999999999999999999999999999999999999999999999
+result=0
+
+# test xstrtoimax
+${CHECKER} test-xstrtoimax 1 >> out 2>&1 || result=1
+${CHECKER} test-xstrtoimax -1 >> out 2>&1 || result=1
+${CHECKER} test-xstrtoimax 1k >> out 2>&1 || result=1
+${CHECKER} test-xstrtoimax ${too_big}h >> out 2>&1 && result=1
+${CHECKER} test-xstrtoimax $too_big >> out 2>&1 && result=1
+${CHECKER} test-xstrtoimax x >> out 2>&1 && result=1
+${CHECKER} test-xstrtoimax 9x >> out 2>&1 && result=1
+${CHECKER} test-xstrtoimax 010 >> out 2>&1 || result=1
+${CHECKER} test-xstrtoimax MiB >> out 2>&1 || result=1
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+if echo solaris | tr -d '\r' | grep solais > /dev/null; then
+  cr='\015'
+else
+  cr='\r'
+fi
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k
+mv k out
+
+# compare expected output
+cat > exp <<EOF
+1->1 ()
+-1->-1 ()
+1k->1024 ()
+invalid suffix in X argument '${too_big}h'
+X argument '$too_big' too large
+invalid X argument 'x'
+invalid suffix in X argument '9x'
+010->8 ()
+MiB->1048576 ()
+EOF
+
+compare exp out || result=1
+
+Exit $result
diff --git a/gnulib-tests/test-xstrtol.c b/gnulib-tests/test-xstrtol.c
new file mode 100644
index 0000000..8d22098
--- /dev/null
+++ b/gnulib-tests/test-xstrtol.c
@@ -0,0 +1,62 @@
+/* Test of xstrtol module.
+   Copyright (C) 1995-1996, 1998-2001, 2003-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <inttypes.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "xstrtol-error.h"
+#include "error.h"
+
+#ifndef __xstrtol
+# define __xstrtol xstrtol
+# define __strtol_t long int
+# define __spec "ld"
+#endif
+
+/* Don't show the program name in error messages.  */
+static void
+print_no_progname (void)
+{
+}
+
+int
+main (int argc, char **argv)
+{
+  strtol_error s_err;
+  int i;
+
+  error_print_progname = print_no_progname;
+
+  for (i = 1; i < argc; i++)
+    {
+      char *p;
+      __strtol_t val;
+
+      s_err = __xstrtol (argv[i], &p, 0, &val, "bckMw0");
+      if (s_err == LONGINT_OK)
+        {
+          printf ("%s->%" __spec " (%s)\n", argv[i], val, p);
+        }
+      else
+        {
+          xstrtol_fatal (s_err, -2, 'X', NULL, argv[i]);
+        }
+    }
+  exit (0);
+}
diff --git a/gnulib-tests/test-xstrtol.sh b/gnulib-tests/test-xstrtol.sh
new file mode 100755
index 0000000..15dd911
--- /dev/null
+++ b/gnulib-tests/test-xstrtol.sh
@@ -0,0 +1,71 @@
+#!/bin/sh
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+too_big=99999999999999999999999999999999999999999999999999999999999999999999
+result=0
+
+# test xstrtol
+${CHECKER} test-xstrtol 1 >> out 2>&1 || result=1
+${CHECKER} test-xstrtol -1 >> out 2>&1 || result=1
+${CHECKER} test-xstrtol 1k >> out 2>&1 || result=1
+${CHECKER} test-xstrtol ${too_big}h >> out 2>&1 && result=1
+${CHECKER} test-xstrtol $too_big >> out 2>&1 && result=1
+${CHECKER} test-xstrtol x >> out 2>&1 && result=1
+${CHECKER} test-xstrtol 9x >> out 2>&1 && result=1
+${CHECKER} test-xstrtol 010 >> out 2>&1 || result=1
+# suffix without integer is valid
+${CHECKER} test-xstrtol MiB >> out 2>&1 || result=1
+${CHECKER} test-xstrtol 1bB >> out 2>&1 && result=1
+
+# test xstrtoul
+${CHECKER} test-xstrtoul 1 >> out 2>&1 || result=1
+${CHECKER} test-xstrtoul -1 >> out 2>&1 && result=1
+${CHECKER} test-xstrtoul 1k >> out 2>&1 || result=1
+${CHECKER} test-xstrtoul ${too_big}h >> out 2>&1 && result=1
+${CHECKER} test-xstrtoul $too_big >> out 2>&1 && result=1
+${CHECKER} test-xstrtoul x >> out 2>&1 && result=1
+${CHECKER} test-xstrtoul 9x >> out 2>&1 && result=1
+${CHECKER} test-xstrtoul 010 >> out 2>&1 || result=1
+${CHECKER} test-xstrtoul MiB >> out 2>&1 || result=1
+${CHECKER} test-xstrtoul 1bB >> out 2>&1 && result=1
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+if echo solaris | tr -d '\r' | grep solais > /dev/null; then
+  cr='\015'
+else
+  cr='\r'
+fi
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k
+mv k out
+
+# compare expected output
+cat > expected <<EOF
+1->1 ()
+-1->-1 ()
+1k->1024 ()
+invalid suffix in X argument '${too_big}h'
+X argument '$too_big' too large
+invalid X argument 'x'
+invalid suffix in X argument '9x'
+010->8 ()
+MiB->1048576 ()
+invalid suffix in X argument '1bB'
+1->1 ()
+invalid X argument '-1'
+1k->1024 ()
+invalid suffix in X argument '${too_big}h'
+X argument '$too_big' too large
+invalid X argument 'x'
+invalid suffix in X argument '9x'
+010->8 ()
+MiB->1048576 ()
+invalid suffix in X argument '1bB'
+EOF
+
+compare expected out || result=1
+
+Exit $result
diff --git a/gnulib-tests/test-xstrtoul.c b/gnulib-tests/test-xstrtoul.c
new file mode 100644
index 0000000..9dda9ee
--- /dev/null
+++ b/gnulib-tests/test-xstrtoul.c
@@ -0,0 +1,4 @@
+#define __xstrtol xstrtoul
+#define __strtol_t unsigned long int
+#define __spec "lu"
+#include "test-xstrtol.c"
diff --git a/gnulib-tests/test-xstrtoumax.c b/gnulib-tests/test-xstrtoumax.c
new file mode 100644
index 0000000..2e68c2e
--- /dev/null
+++ b/gnulib-tests/test-xstrtoumax.c
@@ -0,0 +1,4 @@
+#define __xstrtol xstrtoumax
+#define __strtol_t uintmax_t
+#define __spec PRIuMAX
+#include "test-xstrtol.c"
diff --git a/gnulib-tests/test-xstrtoumax.sh b/gnulib-tests/test-xstrtoumax.sh
new file mode 100755
index 0000000..3ec4cc6
--- /dev/null
+++ b/gnulib-tests/test-xstrtoumax.sh
@@ -0,0 +1,46 @@
+#!/bin/sh
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+too_big=99999999999999999999999999999999999999999999999999999999999999999999
+result=0
+
+# test xstrtoumax
+${CHECKER} test-xstrtoumax 1 >> out 2>&1 || result=1
+${CHECKER} test-xstrtoumax -1 >> out 2>&1 && result=1
+${CHECKER} test-xstrtoumax 1k >> out 2>&1 || result=1
+${CHECKER} test-xstrtoumax ${too_big}h >> out 2>&1 && result=1
+${CHECKER} test-xstrtoumax $too_big >> out 2>&1 && result=1
+${CHECKER} test-xstrtoumax x >> out 2>&1 && result=1
+${CHECKER} test-xstrtoumax 9x >> out 2>&1 && result=1
+${CHECKER} test-xstrtoumax 010 >> out 2>&1 || result=1
+${CHECKER} test-xstrtoumax MiB >> out 2>&1 || result=1
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+if echo solaris | tr -d '\r' | grep solais > /dev/null; then
+  cr='\015'
+else
+  cr='\r'
+fi
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k
+mv k out
+
+# compare expected output
+cat > exp <<EOF
+1->1 ()
+invalid X argument '-1'
+1k->1024 ()
+invalid suffix in X argument '${too_big}h'
+X argument '$too_big' too large
+invalid X argument 'x'
+invalid suffix in X argument '9x'
+010->8 ()
+MiB->1048576 ()
+EOF
+
+compare exp out || result=1
+
+Exit $result
diff --git a/gnulib-tests/test-xvasprintf.c b/gnulib-tests/test-xvasprintf.c
new file mode 100644
index 0000000..39bd264
--- /dev/null
+++ b/gnulib-tests/test-xvasprintf.c
@@ -0,0 +1,135 @@
+/* Test of xvasprintf() and xasprintf() functions.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+/* Tell GCC not to warn about the specific edge cases tested here.  */
+#if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__
+# pragma GCC diagnostic ignored "-Wformat-zero-length"
+# pragma GCC diagnostic ignored "-Wformat-nonliteral"
+# pragma GCC diagnostic ignored "-Wformat-security"
+#endif
+
+#include <config.h>
+
+#include "xvasprintf.h"
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+static char *
+my_xasprintf (const char *format, ...)
+{
+  va_list args;
+  char *ret;
+
+  va_start (args, format);
+  ret = xvasprintf (format, args);
+  va_end (args);
+  return ret;
+}
+
+static void
+test_xvasprintf (void)
+{
+  int repeat;
+  char *result;
+
+  for (repeat = 0; repeat <= 8; repeat++)
+    {
+      result = my_xasprintf ("%d", 12345);
+      ASSERT (result != NULL);
+      ASSERT (strcmp (result, "12345") == 0);
+      free (result);
+    }
+
+  {
+    /* Silence gcc warning about zero-length format string.  */
+    const char *empty = "";
+    result = my_xasprintf (empty);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "") == 0);
+    free (result);
+  }
+
+  result = my_xasprintf ("%s", "foo");
+  ASSERT (result != NULL);
+  ASSERT (strcmp (result, "foo") == 0);
+  free (result);
+
+  result = my_xasprintf ("%s%s", "foo", "bar");
+  ASSERT (result != NULL);
+  ASSERT (strcmp (result, "foobar") == 0);
+  free (result);
+
+  result = my_xasprintf ("%s%sbaz", "foo", "bar");
+  ASSERT (result != NULL);
+  ASSERT (strcmp (result, "foobarbaz") == 0);
+  free (result);
+}
+
+static void
+test_xasprintf (void)
+{
+  int repeat;
+  char *result;
+
+  for (repeat = 0; repeat <= 8; repeat++)
+    {
+      result = xasprintf ("%d", 12345);
+      ASSERT (result != NULL);
+      ASSERT (strcmp (result, "12345") == 0);
+      free (result);
+    }
+
+  {
+    /* Silence gcc warning about zero-length format string,
+       and about "format not a string literal and no format"
+       (whatever that means) .  */
+    const char *empty = "";
+    result = xasprintf (empty, empty);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "") == 0);
+    free (result);
+  }
+
+  result = xasprintf ("%s", "foo");
+  ASSERT (result != NULL);
+  ASSERT (strcmp (result, "foo") == 0);
+  free (result);
+
+  result = xasprintf ("%s%s", "foo", "bar");
+  ASSERT (result != NULL);
+  ASSERT (strcmp (result, "foobar") == 0);
+  free (result);
+
+  result = my_xasprintf ("%s%sbaz", "foo", "bar");
+  ASSERT (result != NULL);
+  ASSERT (strcmp (result, "foobarbaz") == 0);
+  free (result);
+}
+
+int
+main (int argc _GL_UNUSED, char *argv[])
+{
+  test_xvasprintf ();
+  test_xasprintf ();
+
+  return 0;
+}
diff --git a/gnulib-tests/test-yesno.c b/gnulib-tests/test-yesno.c
new file mode 100644
index 0000000..81d2cd3
--- /dev/null
+++ b/gnulib-tests/test-yesno.c
@@ -0,0 +1,62 @@
+/* Test of yesno module.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <config.h>
+
+/* Specification.  */
+#include "yesno.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "closein.h"
+#include "binary-io.h"
+
+/* Test yesno.  Without arguments, read one line.  If first argument
+   is zero, close stdin before attempting to read one line.
+   Otherwise, read the number of lines specified by first
+   argument.  */
+int
+main (int argc, char **argv)
+{
+  int i = 1;
+
+  /* yesno recommends that all clients use close_stdin in main.  */
+  atexit (close_stdin);
+  /* But on mingw, close_stdin leaves stdin's file descriptor at the expected
+     position (i.e. where this program left off reading) only if its mode has
+     been set to O_BINARY.  If it has been set to O_TEXT, and the file
+     descriptor is seekable, and stdin is buffered, the MSVCRT runtime ends up
+     setting the file descriptor's position to the expected position _minus_
+     the number of LFs not preceded by CR that were read between the expected
+     position and the last filled buffer end position.  (I.e. the repositioning
+     from the end-of-buffer to the expected position does not work if the input
+     file contains end-of-line markers in Unix convention.)  */
+  set_binary_mode (0, O_BINARY);
+
+  if (1 < argc)
+    i = atoi (argv[1]);
+  if (!i)
+    {
+      i = 1;
+      close (0);
+    }
+  while (i--)
+    puts (yesno () ? "Y" : "N");
+  return 0;
+}
diff --git a/gnulib-tests/test-yesno.sh b/gnulib-tests/test-yesno.sh
new file mode 100755
index 0000000..67caa77
--- /dev/null
+++ b/gnulib-tests/test-yesno.sh
@@ -0,0 +1,74 @@
+#!/bin/sh
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+# For now, only test with C locale
+LC_ALL=C
+export LC_ALL
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+if echo solaris | tr -d '\r' | grep solais > /dev/null; then
+  cr='\015'
+else
+  cr='\r'
+fi
+
+# Test with seekable stdin; the follow-on process must see remaining data.
+tr @ '\177' <<EOF > in.tmp
+nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn - entire line consumed
+y@n - backspace does not change result
+y
+does not match either yesexpr or noexpr
+n
+EOF
+
+cat <<EOF > xout.tmp
+N
+Y
+Y
+N
+n
+EOF
+
+fail=0
+(${CHECKER} test-yesno; ${CHECKER} test-yesno 3; cat) < in.tmp > out1.tmp || fail=1
+LC_ALL=C tr -d "$cr" < out1.tmp > out.tmp || fail=1
+cmp xout.tmp out.tmp || fail=1
+
+(${CHECKER} test-yesno 3; ${CHECKER} test-yesno; cat) < in.tmp > out1.tmp || fail=1
+LC_ALL=C tr -d "$cr" < out1.tmp > out.tmp || fail=1
+cmp xout.tmp out.tmp || fail=1
+
+# Test for behavior on pipe
+cat <<EOF > xout.tmp
+Y
+N
+EOF
+echo yes | ${CHECKER} test-yesno 2 > out1.tmp || fail=1
+LC_ALL=C tr -d "$cr" < out1.tmp > out.tmp || fail=1
+cmp xout.tmp out.tmp || fail=1
+
+# Test for behavior with no EOL at EOF
+cat <<EOF > xout.tmp
+Y
+EOF
+printf y | ${CHECKER} test-yesno 1 > out1.tmp || fail=1
+LC_ALL=C tr -d "$cr" < out1.tmp > out.tmp || fail=1
+cmp xout.tmp out.tmp || fail=1
+
+# Test for behavior on EOF
+cat <<EOF > xout.tmp
+N
+EOF
+${CHECKER} test-yesno </dev/null > out1.tmp || fail=1
+LC_ALL=C tr -d "$cr" < out1.tmp > out.tmp || fail=1
+cmp xout.tmp out.tmp || fail=1
+
+# Test for behavior when stdin is closed
+${CHECKER} test-yesno 0 <&- > out1.tmp 2> err.tmp && fail=1
+LC_ALL=C tr -d "$cr" < out1.tmp > out.tmp || fail=1
+cmp xout.tmp out.tmp || fail=1
+test -s err.tmp || fail=1
+
+Exit $fail
diff --git a/gnulib-tests/timespec-add.c b/gnulib-tests/timespec-add.c
new file mode 100644
index 0000000..259c2e9
--- /dev/null
+++ b/gnulib-tests/timespec-add.c
@@ -0,0 +1,65 @@
+/* Add two struct timespec values.
+
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+/* Return the sum of two timespec values A and B.  On overflow, return
+   an extremal value.  This assumes 0 <= tv_nsec < TIMESPEC_HZ.  */
+
+#include <config.h>
+#include "timespec.h"
+
+#include "intprops.h"
+
+struct timespec
+timespec_add (struct timespec a, struct timespec b)
+{
+  time_t rs = a.tv_sec;
+  time_t bs = b.tv_sec;
+  int ns = a.tv_nsec + b.tv_nsec;
+  int nsd = ns - TIMESPEC_HZ;
+  int rns = ns;
+
+  if (0 <= nsd)
+    {
+      rns = nsd;
+      time_t bs1;
+      if (!INT_ADD_WRAPV (bs, 1, &bs1))
+        bs = bs1;
+      else if (rs < 0)
+        rs++;
+      else
+        goto high_overflow;
+    }
+
+  if (INT_ADD_WRAPV (rs, bs, &rs))
+    {
+      if (bs < 0)
+        {
+          rs = TYPE_MINIMUM (time_t);
+          rns = 0;
+        }
+      else
+        {
+        high_overflow:
+          rs = TYPE_MAXIMUM (time_t);
+          rns = TIMESPEC_HZ - 1;
+        }
+    }
+
+  return make_timespec (rs, rns);
+}
diff --git a/gnulib-tests/timespec-sub.c b/gnulib-tests/timespec-sub.c
new file mode 100644
index 0000000..ee827a7
--- /dev/null
+++ b/gnulib-tests/timespec-sub.c
@@ -0,0 +1,65 @@
+/* Subtract two struct timespec values.
+
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+/* Return the difference between two timespec values A and B.  On
+   overflow, return an extremal value.  This assumes 0 <= tv_nsec <
+   TIMESPEC_HZ.  */
+
+#include <config.h>
+#include "timespec.h"
+
+#include "intprops.h"
+
+struct timespec
+timespec_sub (struct timespec a, struct timespec b)
+{
+  time_t rs = a.tv_sec;
+  time_t bs = b.tv_sec;
+  int ns = a.tv_nsec - b.tv_nsec;
+  int rns = ns;
+
+  if (ns < 0)
+    {
+      rns = ns + TIMESPEC_HZ;
+      time_t bs1;
+      if (!INT_ADD_WRAPV (bs, 1, &bs1))
+        bs = bs1;
+      else if (- TYPE_SIGNED (time_t) < rs)
+        rs--;
+      else
+        goto low_overflow;
+    }
+
+  if (INT_SUBTRACT_WRAPV (rs, bs, &rs))
+    {
+      if (0 < bs)
+        {
+        low_overflow:
+          rs = TYPE_MINIMUM (time_t);
+          rns = 0;
+        }
+      else
+        {
+          rs = TYPE_MAXIMUM (time_t);
+          rns = TIMESPEC_HZ - 1;
+        }
+    }
+
+  return make_timespec (rs, rns);
+}
diff --git a/gnulib-tests/tmpdir.c b/gnulib-tests/tmpdir.c
new file mode 100644
index 0000000..74ae359
--- /dev/null
+++ b/gnulib-tests/tmpdir.c
@@ -0,0 +1,159 @@
+/* Copyright (C) 1999, 2001-2002, 2006, 2009-2020 Free Software Foundation,
+   Inc.
+   This file is part of the GNU C Library.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Extracted from sysdeps/posix/tempname.c.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "tmpdir.h"
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <errno.h>
+#ifndef __set_errno
+# define __set_errno(Val) errno = (Val)
+#endif
+
+#include <stdio.h>
+#ifndef P_tmpdir
+# ifdef _P_tmpdir /* native Windows */
+#  define P_tmpdir _P_tmpdir
+# else
+#  define P_tmpdir "/tmp"
+# endif
+#endif
+
+#include <sys/stat.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+# define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+# include <windows.h>
+#endif
+
+#include "pathmax.h"
+
+#if _LIBC
+# define struct_stat64 struct stat64
+#else
+# define struct_stat64 struct stat
+# define __libc_secure_getenv secure_getenv
+# define __xstat64(version, path, buf) stat (path, buf)
+#endif
+
+/* Pathname support.
+   ISSLASH(C)           tests whether C is a directory separator character.
+ */
+#if defined _WIN32 || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
+  /* Native Windows, Cygwin, OS/2, DOS */
+# define ISSLASH(C) ((C) == '/' || (C) == '\\')
+#else
+  /* Unix */
+# define ISSLASH(C) ((C) == '/')
+#endif
+
+
+/* Return nonzero if DIR is an existent directory.  */
+static bool
+direxists (const char *dir)
+{
+  struct_stat64 buf;
+  return __xstat64 (_STAT_VER, dir, &buf) == 0 && S_ISDIR (buf.st_mode);
+}
+
+/* Path search algorithm, for tmpnam, tmpfile, etc.  If DIR is
+   non-null and exists, uses it; otherwise uses the first of $TMPDIR,
+   P_tmpdir, /tmp that exists.  Copies into TMPL a template suitable
+   for use with mk[s]temp.  Will fail (-1) if DIR is non-null and
+   doesn't exist, none of the searched dirs exists, or there's not
+   enough space in TMPL. */
+int
+path_search (char *tmpl, size_t tmpl_len, const char *dir, const char *pfx,
+             bool try_tmpdir)
+{
+  const char *d;
+  size_t dlen, plen;
+  bool add_slash;
+
+  if (!pfx || !pfx[0])
+    {
+      pfx = "file";
+      plen = 4;
+    }
+  else
+    {
+      plen = strlen (pfx);
+      if (plen > 5)
+        plen = 5;
+    }
+
+  if (try_tmpdir)
+    {
+      d = __libc_secure_getenv ("TMPDIR");
+      if (d != NULL && direxists (d))
+        dir = d;
+      else if (dir != NULL && direxists (dir))
+        /* nothing */ ;
+      else
+        dir = NULL;
+    }
+  if (dir == NULL)
+    {
+#if defined _WIN32 && ! defined __CYGWIN__
+      char dirbuf[PATH_MAX];
+      DWORD retval;
+
+      /* Find Windows temporary file directory.
+         We try this before P_tmpdir because Windows defines P_tmpdir to "\\"
+         and will therefore try to put all temporary files in the root
+         directory (unless $TMPDIR is set).  */
+      retval = GetTempPath (PATH_MAX, dirbuf);
+      if (retval > 0 && retval < PATH_MAX && direxists (dirbuf))
+        dir = dirbuf;
+      else
+#endif
+      if (direxists (P_tmpdir))
+        dir = P_tmpdir;
+      else if (strcmp (P_tmpdir, "/tmp") != 0 && direxists ("/tmp"))
+        dir = "/tmp";
+      else
+        {
+          __set_errno (ENOENT);
+          return -1;
+        }
+    }
+
+  dlen = strlen (dir);
+#ifdef __VMS
+  add_slash = 0;
+#else
+  add_slash = dlen != 0 && !ISSLASH (dir[dlen - 1]);
+#endif
+
+  /* check we have room for "${dir}/${pfx}XXXXXX\0" */
+  if (tmpl_len < dlen + add_slash + plen + 6 + 1)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  memcpy (tmpl, dir, dlen);
+  sprintf (tmpl + dlen, &"/%.*sXXXXXX"[!add_slash], (int) plen, pfx);
+  return 0;
+}
diff --git a/gnulib-tests/tmpdir.h b/gnulib-tests/tmpdir.h
new file mode 100644
index 0000000..4d694a3
--- /dev/null
+++ b/gnulib-tests/tmpdir.h
@@ -0,0 +1,26 @@
+/* Determine a temporary directory.
+   Copyright (C) 2001-2002, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <stdbool.h>
+#include <stddef.h>
+
+/* Path search algorithm, for tmpnam, tmpfile, etc.  If DIR is
+   non-null and exists, uses it; otherwise uses the first of $TMPDIR,
+   P_tmpdir, /tmp that exists.  Copies into TMPL a template suitable
+   for use with mk[s]temp.  Will fail (-1) if DIR is non-null and
+   doesn't exist, none of the searched dirs exists, or there's not
+   enough space in TMPL. */
+extern int path_search (char *tmpl, size_t tmpl_len, const char *dir, const char *pfx, bool try_tmpdir);
diff --git a/gnulib-tests/tmpfile.c b/gnulib-tests/tmpfile.c
new file mode 100644
index 0000000..99d6752
--- /dev/null
+++ b/gnulib-tests/tmpfile.c
@@ -0,0 +1,179 @@
+/* Create a temporary file.
+   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Ben Pfaff. */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdio.h>
+
+#include <errno.h>
+#include <stdbool.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* A native Windows platforms.  */
+
+# include <fcntl.h>
+# include <string.h>
+# include <sys/stat.h>
+
+# include <io.h>
+
+# define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+# include <windows.h>
+
+#else
+
+# include <unistd.h>
+
+#endif
+
+#include "pathmax.h"
+#include "tempname.h"
+#include "tmpdir.h"
+
+/* PATH_MAX is guaranteed to be defined, because this replacement is only
+   used on native Windows and Android.  */
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* A native Windows platforms.  */
+
+/* On Windows, opening a file with _O_TEMPORARY has the effect of passing
+   the FILE_FLAG_DELETE_ON_CLOSE flag to CreateFile(), which has the effect
+   of deleting the file when it is closed - even when the program crashes.
+   But (according to the Cygwin sources) it works only on Windows NT or newer.
+   So we cache the info whether we are running on Windows NT or newer.  */
+
+static bool
+supports_delete_on_close ()
+{
+  static int known; /* 1 = yes, -1 = no, 0 = unknown */
+  if (!known)
+    {
+      OSVERSIONINFO v;
+
+      /* According to
+         <https://docs.microsoft.com/en-us/windows/desktop/api/sysinfoapi/nf-sysinfoapi-getversionexa>
+         this structure must be initialized as follows:  */
+      v.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
+
+      if (GetVersionEx (&v))
+        known = (v.dwPlatformId == VER_PLATFORM_WIN32_NT ? 1 : -1);
+      else
+        known = -1;
+    }
+  return (known > 0);
+}
+
+FILE *
+tmpfile (void)
+{
+  char dir[PATH_MAX];
+  DWORD retval;
+
+  /* Find Windows temporary file directory.
+     We provide this as the directory argument to path_search because Windows
+     defines P_tmpdir to "\\" and will therefore try to put all temporary files
+     in the root directory (unless $TMPDIR is set). */
+  retval = GetTempPath (PATH_MAX, dir);
+  if (retval > 0 && retval < PATH_MAX)
+    {
+      char xtemplate[PATH_MAX];
+
+      if (path_search (xtemplate, PATH_MAX, dir, NULL, true) >= 0)
+        {
+          size_t len = strlen (xtemplate);
+          int o_temporary = (supports_delete_on_close () ? _O_TEMPORARY : 0);
+          int fd;
+
+          do
+            {
+              memcpy (&xtemplate[len - 6], "XXXXXX", 6);
+              if (gen_tempname (xtemplate, 0, 0, GT_NOCREATE) < 0)
+                {
+                  fd = -1;
+                  break;
+                }
+
+              fd = _open (xtemplate,
+                          _O_CREAT | _O_EXCL | o_temporary
+                          | _O_RDWR | _O_BINARY,
+                          _S_IREAD | _S_IWRITE);
+            }
+          while (fd < 0 && errno == EEXIST);
+
+          if (fd >= 0)
+            {
+              FILE *fp = _fdopen (fd, "w+b");
+
+              if (fp != NULL)
+                return fp;
+              else
+                {
+                  int saved_errno = errno;
+                  _close (fd);
+                  errno = saved_errno;
+                }
+            }
+        }
+    }
+  else
+    {
+      if (retval > 0)
+        errno = ENAMETOOLONG;
+      else
+        /* Ideally this should translate GetLastError () to an errno value.  */
+        errno = ENOENT;
+    }
+
+  return NULL;
+}
+
+#else
+
+FILE *
+tmpfile (void)
+{
+  char buf[PATH_MAX];
+  int fd;
+  FILE *fp;
+
+  /* Try $TMPDIR first, not /tmp nor P_tmpdir, because we need this replacement
+     on Android, and /tmp does not exist on Android.  */
+
+  if (path_search (buf, sizeof buf, NULL, "tmpf", true))
+    return NULL;
+
+  fd = gen_tempname (buf, 0, 0, GT_FILE);
+  if (fd < 0)
+    return NULL;
+
+  /* Note that this relies on the Unix semantics that
+     a file is not really removed until it is closed.  */
+  (void) unlink (buf);
+
+  if ((fp = fdopen (fd, "w+b")) == NULL)
+    {
+      int saved_errno = errno;
+      close (fd);
+      errno = saved_errno;
+    }
+
+  return fp;
+}
+
+#endif
diff --git a/gnulib-tests/unistr/test-strncat.h b/gnulib-tests/unistr/test-strncat.h
new file mode 100644
index 0000000..1b99ccf
--- /dev/null
+++ b/gnulib-tests/unistr/test-strncat.h
@@ -0,0 +1,90 @@
+/* Test of uN_strncat() functions.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
+
+static void
+check_single (const UNIT *input, size_t length, size_t n)
+{
+  static const UNIT base[] = { 'C', 'h', 'a', 'n', 'g', 'i', 'n', 'g', 0 };
+  size_t m;
+
+  for (m = 0; m < SIZEOF (base); m++)
+    {
+      UNIT *dest;
+      UNIT *result;
+      size_t i;
+
+      dest = (UNIT *) malloc ((1 + m + n + 2) * sizeof (UNIT));
+      ASSERT (dest != NULL);
+
+      dest[0] = MAGIC;
+      for (i = 0; i < m; i++)
+        dest[1 + i] = base[i];
+      dest[1 + m] = 0;
+      for (i = 1; i < n + 2; i++)
+        dest[1 + m + i] = MAGIC;
+
+      result = U_STRNCAT (dest + 1, input, n);
+      ASSERT (result == dest + 1);
+
+      ASSERT (dest[0] == MAGIC);
+      for (i = 0; i < m; i++)
+        ASSERT (dest[1 + i] == base[i]);
+      for (i = 0; i < (n <= length ? n : length); i++)
+        ASSERT (dest[1 + m + i] == input[i]);
+      ASSERT (dest[1 + m + i] == 0);
+      ASSERT (dest[1 + m + i + 1] == MAGIC);
+
+      free (dest);
+    }
+}
+
+static void
+check (const UNIT *input, size_t input_length)
+{
+  size_t length;
+  size_t n;
+
+  ASSERT (input_length > 0);
+  ASSERT (input[input_length - 1] == 0);
+  length = input_length - 1; /* = U_STRLEN (input) */
+
+  for (n = 0; n <= 2 * length + 2; n++)
+    check_single (input, length, n);
+
+  /* Check that U_STRNCAT (D, S, N) does not look at more than
+     MIN (U_STRLEN (S) + 1, N) units.  */
+  {
+    char *page_boundary = (char *) zerosize_ptr ();
+
+    if (page_boundary != NULL)
+      {
+        for (n = 0; n <= 2 * length + 2; n++)
+          {
+            size_t n_to_copy = (n <= length ? n : length + 1);
+            UNIT *copy;
+            size_t i;
+
+            copy = (UNIT *) page_boundary - n_to_copy;
+            for (i = 0; i < n_to_copy; i++)
+              copy[i] = input[i];
+
+            check_single (copy, length, n);
+          }
+      }
+  }
+}
diff --git a/gnulib-tests/unistr/test-u8-mbtoucr.c b/gnulib-tests/unistr/test-u8-mbtoucr.c
new file mode 100644
index 0000000..9c8ead6
--- /dev/null
+++ b/gnulib-tests/unistr/test-u8-mbtoucr.c
@@ -0,0 +1,187 @@
+/* Test of u8_mbtoucr() function.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
+
+#include <config.h>
+
+#include "unistr.h"
+
+#include "macros.h"
+
+int
+main ()
+{
+  ucs4_t uc;
+  int ret;
+
+  /* Test NUL unit input.  */
+  {
+    static const uint8_t input[] = "";
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 1);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0);
+  }
+
+  /* Test ISO 646 unit input.  */
+  {
+    ucs4_t c;
+    uint8_t buf[1];
+
+    for (c = 0; c < 0x80; c++)
+      {
+        buf[0] = c;
+        uc = 0xBADFACE;
+        ret = u8_mbtoucr (&uc, buf, 1);
+        ASSERT (ret == 1);
+        ASSERT (uc == c);
+      }
+  }
+
+  /* Test 2-byte character input.  */
+  {
+    static const uint8_t input[] = { 0xC3, 0x97 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 2);
+    ASSERT (ret == 2);
+    ASSERT (uc == 0x00D7);
+  }
+
+  /* Test 3-byte character input.  */
+  {
+    static const uint8_t input[] = { 0xE2, 0x82, 0xAC };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 3);
+    ASSERT (ret == 3);
+    ASSERT (uc == 0x20AC);
+  }
+
+  /* Test 4-byte character input.  */
+  {
+    static const uint8_t input[] = { 0xF4, 0x8F, 0xBF, 0xBD };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 4);
+    ASSERT (ret == 4);
+    ASSERT (uc == 0x10FFFD);
+  }
+
+  /* Test incomplete/invalid 1-byte input.  */
+  {
+    static const uint8_t input[] = { 0xC1 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 1);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xC3 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 1);
+    ASSERT (ret == -2);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xE2 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 1);
+    ASSERT (ret == -2);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xF4 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 1);
+    ASSERT (ret == -2);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xFE };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 1);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+
+  /* Test incomplete/invalid 2-byte input.  */
+  {
+    static const uint8_t input[] = { 0xE0, 0x9F };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 2);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xE2, 0x82 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 2);
+    ASSERT (ret == -2);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xE2, 0xD0 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 2);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xF0, 0x8F };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 2);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xF3, 0x8F };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 2);
+    ASSERT (ret == -2);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xF3, 0xD0 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 2);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+
+  /* Test incomplete/invalid 3-byte input.  */
+  {
+    static const uint8_t input[] = { 0xF3, 0x8F, 0xBF };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 3);
+    ASSERT (ret == -2);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xF3, 0xD0, 0xBF };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 3);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xF3, 0x8F, 0xD0 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 3);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/unistr/test-u8-uctomb.c b/gnulib-tests/unistr/test-u8-uctomb.c
new file mode 100644
index 0000000..a63d10f
--- /dev/null
+++ b/gnulib-tests/unistr/test-u8-uctomb.c
@@ -0,0 +1,157 @@
+/* Test of u8_uctomb() function.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
+
+#include <config.h>
+
+#include "unistr.h"
+
+#include "macros.h"
+
+#define MAGIC 0xBA
+
+int
+main ()
+{
+  /* Test ISO 646 character, in particular the NUL character.  */
+  {
+    ucs4_t uc;
+
+    for (uc = 0; uc < 0x80; uc++)
+      {
+        uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
+        int ret;
+
+        ret = u8_uctomb (buf, uc, 0);
+        ASSERT (ret == -2);
+        ASSERT (buf[0] == MAGIC);
+
+        ret = u8_uctomb (buf, uc, 1);
+        ASSERT (ret == 1);
+        ASSERT (buf[0] == uc);
+        ASSERT (buf[1] == MAGIC);
+      }
+  }
+
+  /* Test 2-byte character.  */
+  {
+    ucs4_t uc = 0x00D7;
+    uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
+    int ret;
+
+    ret = u8_uctomb (buf, uc, 0);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 1);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 2);
+    ASSERT (ret == 2);
+    ASSERT (buf[0] == 0xC3);
+    ASSERT (buf[1] == 0x97);
+    ASSERT (buf[2] == MAGIC);
+  }
+
+  /* Test 3-byte character.  */
+  {
+    ucs4_t uc = 0x20AC;
+    uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
+    int ret;
+
+    ret = u8_uctomb (buf, uc, 0);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 1);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 2);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+    ASSERT (buf[1] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 3);
+    ASSERT (ret == 3);
+    ASSERT (buf[0] == 0xE2);
+    ASSERT (buf[1] == 0x82);
+    ASSERT (buf[2] == 0xAC);
+    ASSERT (buf[3] == MAGIC);
+  }
+
+  /* Test 4-byte character.  */
+  {
+    ucs4_t uc = 0x10FFFD;
+    uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
+    int ret;
+
+    ret = u8_uctomb (buf, uc, 0);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 1);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 2);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+    ASSERT (buf[1] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 3);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+    ASSERT (buf[1] == MAGIC);
+    ASSERT (buf[2] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 4);
+    ASSERT (ret == 4);
+    ASSERT (buf[0] == 0xF4);
+    ASSERT (buf[1] == 0x8F);
+    ASSERT (buf[2] == 0xBF);
+    ASSERT (buf[3] == 0xBD);
+    ASSERT (buf[4] == MAGIC);
+  }
+
+  /* Test invalid characters.  */
+  {
+    ucs4_t invalid[] = { 0x110000, 0xD800, 0xDBFF, 0xDC00, 0xDFFF };
+    uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
+    size_t i;
+
+    for (i = 0; i < SIZEOF (invalid); i++)
+      {
+        ucs4_t uc = invalid[i];
+        int n;
+
+        for (n = 0; n <= 4; n++)
+          {
+            int ret = u8_uctomb (buf, uc, n);
+            ASSERT (ret == -1);
+            ASSERT (buf[0] == MAGIC);
+            ASSERT (buf[1] == MAGIC);
+            ASSERT (buf[2] == MAGIC);
+            ASSERT (buf[3] == MAGIC);
+            ASSERT (buf[4] == MAGIC);
+          }
+      }
+  }
+
+  return 0;
+}
diff --git a/gnulib-tests/uniwidth/test-uc_width.c b/gnulib-tests/uniwidth/test-uc_width.c
new file mode 100644
index 0000000..6f06343
--- /dev/null
+++ b/gnulib-tests/uniwidth/test-uc_width.c
@@ -0,0 +1,56 @@
+/* Test of uc_width() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "uniwidth.h"
+
+#include "macros.h"
+
+int
+main ()
+{
+  ucs4_t uc;
+
+  /* Test width of ASCII characters.  */
+  for (uc = 0x0020; uc < 0x007F; uc++)
+    ASSERT (uc_width (uc, "ISO-8859-2") == 1);
+
+  /* Test width of some non-spacing characters.  */
+  ASSERT (uc_width (0x0301, "UTF-8") == 0);
+  ASSERT (uc_width (0x05B0, "UTF-8") == 0);
+
+  /* Test width of some format control characters.  */
+  ASSERT (uc_width (0x200E, "UTF-8") == 0);
+  ASSERT (uc_width (0x2060, "UTF-8") == 0);
+  ASSERT (uc_width (0xE0001, "UTF-8") == 0);
+  ASSERT (uc_width (0xE0044, "UTF-8") == 0);
+
+  /* Test width of some zero width characters.  */
+  ASSERT (uc_width (0x200B, "UTF-8") == 0);
+  ASSERT (uc_width (0xFEFF, "UTF-8") == 0);
+
+  /* Test width of some CJK characters.  */
+  ASSERT (uc_width (0x3000, "UTF-8") == 2);
+  ASSERT (uc_width (0xB250, "UTF-8") == 2);
+  ASSERT (uc_width (0xFF1A, "UTF-8") == 2);
+  ASSERT (uc_width (0x20369, "UTF-8") == 2);
+  ASSERT (uc_width (0x2F876, "UTF-8") == 2);
+
+  return 0;
+}
diff --git a/gnulib-tests/uniwidth/test-uc_width2.c b/gnulib-tests/uniwidth/test-uc_width2.c
new file mode 100644
index 0000000..b86011b
--- /dev/null
+++ b/gnulib-tests/uniwidth/test-uc_width2.c
@@ -0,0 +1,86 @@
+/* Test of uc_width() function.
+   Copyright (C) 2007-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include "uniwidth.h"
+
+#include <stdio.h>
+
+#include "macros.h"
+
+/* One of 0, '0', '1', 'A', '2'.  */
+static char current_width;
+/* The interval for which the current_width holds.  */
+static ucs4_t current_start;
+static ucs4_t current_end;
+
+static void
+finish_interval (void)
+{
+  if (current_width != 0)
+    {
+      if (current_start == current_end)
+        printf ("%04X\t\t%c\n", (unsigned) current_start, current_width);
+      else
+        printf ("%04X..%04X\t%c\n", (unsigned) current_start,
+                (unsigned) current_end, current_width);
+      current_width = 0;
+    }
+}
+
+static void
+add_to_interval (ucs4_t uc, char width)
+{
+  if (current_width == width && uc == current_end + 1)
+    current_end = uc;
+  else
+    {
+      finish_interval ();
+      current_width = width;
+      current_start = current_end = uc;
+    }
+}
+
+int
+main ()
+{
+  ucs4_t uc;
+
+  for (uc = 0; uc < 0x110000; uc++)
+    {
+      int w1 = uc_width (uc, "UTF-8");
+      int w2 = uc_width (uc, "GBK");
+      char width =
+        (w1 == 0 && w2 == 0 ? '0' :
+         w1 == 1 && w2 == 1 ? '1' :
+         w1 == 1 && w2 == 2 ? 'A' :
+         w1 == 2 && w2 == 2 ? '2' :
+         0);
+      if (width == 0)
+        {
+          /* uc must be a control character.  */
+          ASSERT (w1 < 0 && w2 < 0);
+        }
+      else
+        add_to_interval (uc, width);
+    }
+  finish_interval ();
+
+  return 0;
+}
diff --git a/gnulib-tests/uniwidth/test-uc_width2.sh b/gnulib-tests/uniwidth/test-uc_width2.sh
new file mode 100755
index 0000000..23866c9
--- /dev/null
+++ b/gnulib-tests/uniwidth/test-uc_width2.sh
@@ -0,0 +1,631 @@
+#!/bin/sh
+
+tmpfiles=""
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles="$tmpfiles uc_width.out"
+${CHECKER} ./test-uc_width2${EXEEXT} | LC_ALL=C tr -d '\r' > uc_width.out
+
+tmpfiles="$tmpfiles uc_width.ok"
+cat > uc_width.ok <<\EOF
+0000		0
+0020..007E	1
+00A0		1
+00A1..00AC	A
+00AD		0
+00AE..02FF	A
+0300..036F	0
+0370..0482	A
+0483..0489	0
+048A..0590	A
+0591..05BD	0
+05BE		A
+05BF		0
+05C0		A
+05C1..05C2	0
+05C3		A
+05C4..05C5	0
+05C6		A
+05C7		0
+05C8..05FF	A
+0600..0605	0
+0606..060F	A
+0610..061A	0
+061B		A
+061C		0
+061D..064A	A
+064B..065F	0
+0660..066F	A
+0670		0
+0671..06D5	A
+06D6..06DD	0
+06DE		A
+06DF..06E4	0
+06E5..06E6	A
+06E7..06E8	0
+06E9		A
+06EA..06ED	0
+06EE..070E	A
+070F		0
+0710		A
+0711		0
+0712..072F	A
+0730..074A	0
+074B..07A5	A
+07A6..07B0	0
+07B1..07EA	A
+07EB..07F3	0
+07F4..0815	A
+0816..0819	0
+081A		A
+081B..0823	0
+0824		A
+0825..0827	0
+0828		A
+0829..082D	0
+082E..0858	A
+0859..085B	0
+085C..08D3	A
+08D4..0902	0
+0903..0939	A
+093A		0
+093B		A
+093C		0
+093D..0940	A
+0941..0948	0
+0949..094C	A
+094D		0
+094E..0950	A
+0951..0957	0
+0958..0961	A
+0962..0963	0
+0964..0980	A
+0981		0
+0982..09BB	A
+09BC		0
+09BD..09C0	A
+09C1..09C4	0
+09C5..09CC	A
+09CD		0
+09CE..09E1	A
+09E2..09E3	0
+09E4..0A00	A
+0A01..0A02	0
+0A03..0A3B	A
+0A3C		0
+0A3D..0A40	A
+0A41..0A42	0
+0A43..0A46	A
+0A47..0A48	0
+0A49..0A4A	A
+0A4B..0A4D	0
+0A4E..0A50	A
+0A51		0
+0A52..0A6F	A
+0A70..0A71	0
+0A72..0A74	A
+0A75		0
+0A76..0A80	A
+0A81..0A82	0
+0A83..0ABB	A
+0ABC		0
+0ABD..0AC0	A
+0AC1..0AC5	0
+0AC6		A
+0AC7..0AC8	0
+0AC9..0ACC	A
+0ACD		0
+0ACE..0AE1	A
+0AE2..0AE3	0
+0AE4..0B00	A
+0B01		0
+0B02..0B3B	A
+0B3C		0
+0B3D..0B3E	A
+0B3F		0
+0B40		A
+0B41..0B44	0
+0B45..0B4C	A
+0B4D		0
+0B4E..0B55	A
+0B56		0
+0B57..0B61	A
+0B62..0B63	0
+0B64..0B81	A
+0B82		0
+0B83..0BBF	A
+0BC0		0
+0BC1..0BCC	A
+0BCD		0
+0BCE..0BFF	A
+0C00		0
+0C01..0C3D	A
+0C3E..0C40	0
+0C41..0C45	A
+0C46..0C48	0
+0C49		A
+0C4A..0C4D	0
+0C4E..0C54	A
+0C55..0C56	0
+0C57..0C61	A
+0C62..0C63	0
+0C64..0C80	A
+0C81		0
+0C82..0CBB	A
+0CBC		0
+0CBD..0CCB	A
+0CCC..0CCD	0
+0CCE..0CE1	A
+0CE2..0CE3	0
+0CE4..0D00	A
+0D01		0
+0D02..0D40	A
+0D41..0D44	0
+0D45..0D4C	A
+0D4D		0
+0D4E..0D61	A
+0D62..0D63	0
+0D64..0DC9	A
+0DCA		0
+0DCB..0DD1	A
+0DD2..0DD4	0
+0DD5		A
+0DD6		0
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+0E32..0E33	A
+0E34..0E3A	0
+0E3B..0E46	A
+0E47..0E4E	0
+0E4F..0EB0	A
+0EB1		0
+0EB2..0EB3	A
+0EB4..0EB9	0
+0EBA		A
+0EBB..0EBC	0
+0EBD..0EC7	A
+0EC8..0ECD	0
+0ECE..0F17	A
+0F18..0F19	0
+0F1A..0F34	A
+0F35		0
+0F36		A
+0F37		0
+0F38		A
+0F39		0
+0F3A..0F70	A
+0F71..0F7E	0
+0F7F		A
+0F80..0F84	0
+0F85		A
+0F86..0F87	0
+0F88..0F8C	A
+0F8D..0F97	0
+0F98		A
+0F99..0FBC	0
+0FBD..0FC5	A
+0FC6		0
+0FC7..102C	A
+102D..1030	0
+1031		A
+1032..1037	0
+1038		A
+1039..103A	0
+103B..103C	A
+103D..103E	0
+103F..1057	A
+1058..1059	0
+105A..105D	A
+105E..1060	0
+1061..1070	A
+1071..1074	0
+1075..1081	A
+1082		0
+1083..1084	A
+1085..1086	0
+1087..108C	A
+108D		0
+108E..109C	A
+109D		0
+109E..10FF	A
+1100..115F	2
+1160..135C	A
+135D..135F	0
+1360..1711	A
+1712..1714	0
+1715..1731	A
+1732..1734	0
+1735..1751	A
+1752..1753	0
+1754..1771	A
+1772..1773	0
+1774..17B3	A
+17B4..17B5	0
+17B6		A
+17B7..17BD	0
+17BE..17C5	A
+17C6		0
+17C7..17C8	A
+17C9..17D3	0
+17D4..17DC	A
+17DD		0
+17DE..180A	A
+180B..180E	0
+180F..1884	A
+1885..1886	0
+1887..18A8	A
+18A9		0
+18AA..191F	A
+1920..1922	0
+1923..1926	A
+1927..1928	0
+1929..1931	A
+1932		0
+1933..1938	A
+1939..193B	0
+193C..1A16	A
+1A17..1A18	0
+1A19..1A1A	A
+1A1B		0
+1A1C..1A55	A
+1A56		0
+1A57		A
+1A58..1A5E	0
+1A5F		A
+1A60		0
+1A61		A
+1A62		0
+1A63..1A64	A
+1A65..1A6C	0
+1A6D..1A72	A
+1A73..1A7C	0
+1A7D..1A7E	A
+1A7F		0
+1A80..1AAF	A
+1AB0..1ABE	0
+1ABF..1AFF	A
+1B00..1B03	0
+1B04..1B33	A
+1B34		0
+1B35		A
+1B36..1B3A	0
+1B3B		A
+1B3C		0
+1B3D..1B41	A
+1B42		0
+1B43..1B6A	A
+1B6B..1B73	0
+1B74..1B7F	A
+1B80..1B81	0
+1B82..1BA1	A
+1BA2..1BA5	0
+1BA6..1BA7	A
+1BA8..1BA9	0
+1BAA		A
+1BAB..1BAD	0
+1BAE..1BE5	A
+1BE6		0
+1BE7		A
+1BE8..1BE9	0
+1BEA..1BEC	A
+1BED		0
+1BEE		A
+1BEF..1BF1	0
+1BF2..1C2B	A
+1C2C..1C33	0
+1C34..1C35	A
+1C36..1C37	0
+1C38..1CCF	A
+1CD0..1CD2	0
+1CD3		A
+1CD4..1CE0	0
+1CE1		A
+1CE2..1CE8	0
+1CE9..1CEC	A
+1CED		0
+1CEE..1CF3	A
+1CF4		0
+1CF5..1CF7	A
+1CF8..1CF9	0
+1CFA..1DBF	A
+1DC0..1DF5	0
+1DF6..1DFA	A
+1DFB..1DFF	0
+1E00..200A	A
+200B..200F	0
+2010..2029	A
+202A..202E	0
+202F..205F	A
+2060..2064	0
+2065		A
+2066..206F	0
+2070..20A8	A
+20A9		1
+20AA..20CF	A
+20D0..20F0	0
+20F1..2328	A
+2329..232A	2
+232B..2CEE	A
+2CEF..2CF1	0
+2CF2..2D7E	A
+2D7F		0
+2D80..2DDF	A
+2DE0..2DFF	0
+2E00..2E7F	A
+2E80..3029	2
+302A..302D	0
+302E..303E	2
+303F		A
+3040..3098	2
+3099..309A	0
+309B..4DBF	2
+4DC0..4DFF	A
+4E00..A4CF	2
+A4D0..A66E	A
+A66F..A672	0
+A673		A
+A674..A67D	0
+A67E..A69D	A
+A69E..A69F	0
+A6A0..A6EF	A
+A6F0..A6F1	0
+A6F2..A801	A
+A802		0
+A803..A805	A
+A806		0
+A807..A80A	A
+A80B		0
+A80C..A824	A
+A825..A826	0
+A827..A8C3	A
+A8C4..A8C5	0
+A8C6..A8DF	A
+A8E0..A8F1	0
+A8F2..A925	A
+A926..A92D	0
+A92E..A946	A
+A947..A951	0
+A952..A97F	A
+A980..A982	0
+A983..A9B2	A
+A9B3		0
+A9B4..A9B5	A
+A9B6..A9B9	0
+A9BA..A9BB	A
+A9BC		0
+A9BD..A9E4	A
+A9E5		0
+A9E6..AA28	A
+AA29..AA2E	0
+AA2F..AA30	A
+AA31..AA32	0
+AA33..AA34	A
+AA35..AA36	0
+AA37..AA42	A
+AA43		0
+AA44..AA4B	A
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+AA4D..AA7B	A
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+AAB5..AAB6	A
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+AAC0		A
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+AAEC..AAED	0
+AAEE..AAF5	A
+AAF6		0
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+ABED		0
+ABEE..ABFF	A
+AC00..D7A3	2
+D7A4..F8FF	A
+F900..FAFF	2
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+FE00..FE0F	0
+FE10..FE1F	2
+FE20..FE2F	0
+FE30..FE6F	2
+FE70..FEFE	A
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+11C92..11CA7	0
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+11CB1		1
+11CB2..11CB3	0
+11CB4		1
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+16AF0..16AF4	0
+16AF5..16B2F	1
+16B30..16B36	0
+16B37..16F8E	1
+16F8F..16F92	0
+16F93..1BC9C	1
+1BC9D..1BC9E	0
+1BC9F		1
+1BCA0..1BCA3	0
+1BCA4..1D166	1
+1D167..1D169	0
+1D16A..1D172	1
+1D173..1D182	0
+1D183..1D184	1
+1D185..1D18B	0
+1D18C..1D1A9	1
+1D1AA..1D1AD	0
+1D1AE..1D241	1
+1D242..1D244	0
+1D245..1D9FF	1
+1DA00..1DA36	0
+1DA37..1DA3A	1
+1DA3B..1DA6C	0
+1DA6D..1DA74	1
+1DA75		0
+1DA76..1DA83	1
+1DA84		0
+1DA85..1DA9A	1
+1DA9B..1DA9F	0
+1DAA0		1
+1DAA1..1DAAF	0
+1DAB0..1DFFF	1
+1E000..1E006	0
+1E007		1
+1E008..1E018	0
+1E019..1E01A	1
+1E01B..1E021	0
+1E022		1
+1E023..1E024	0
+1E025		1
+1E026..1E02A	0
+1E02B..1E8CF	1
+1E8D0..1E8D6	0
+1E8D7..1E943	1
+1E944..1E94A	0
+1E94B..1FFFF	1
+20000..3FFFF	2
+40000..E0000	1
+E0001		0
+E0002..E001F	1
+E0020..E007F	0
+E0080..E00FF	1
+E0100..E01EF	0
+E01F0..10FFFF	1
+EOF
+
+: ${DIFF=diff}
+${DIFF} uc_width.ok uc_width.out
+result=$?
+
+rm -fr $tmpfiles
+
+exit $result
diff --git a/gnulib-tests/unused-parameter.h b/gnulib-tests/unused-parameter.h
new file mode 100644
index 0000000..f5cf21e
--- /dev/null
+++ b/gnulib-tests/unused-parameter.h
@@ -0,0 +1,36 @@
+/* A C macro for declaring that specific function parameters are not used.
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* _GL_UNUSED_PARAMETER is a marker that can be appended to function parameter
+   declarations for parameters that are not used.  This helps to reduce
+   warnings, such as from GCC -Wunused-parameter.  The syntax is as follows:
+       type param _GL_UNUSED_PARAMETER
+   or more generally
+       param_decl _GL_UNUSED_PARAMETER
+   For example:
+       int param _GL_UNUSED_PARAMETER
+       int *(*param)(void) _GL_UNUSED_PARAMETER
+   Other possible, but obscure and discouraged syntaxes:
+       int _GL_UNUSED_PARAMETER *(*param)(void)
+       _GL_UNUSED_PARAMETER int *(*param)(void)
+ */
+#ifndef _GL_UNUSED_PARAMETER
+# if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
+#  define _GL_UNUSED_PARAMETER __attribute__ ((__unused__))
+# else
+#  define _GL_UNUSED_PARAMETER
+# endif
+#endif
diff --git a/gnulib-tests/usleep.c b/gnulib-tests/usleep.c
new file mode 100644
index 0000000..f735302
--- /dev/null
+++ b/gnulib-tests/usleep.c
@@ -0,0 +1,76 @@
+/* Pausing execution of the current thread.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+   Written by Eric Blake <ebb9@byu.net>, 2009.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This file is _intentionally_ light-weight.  Rather than using
+   select or nanosleep, both of which drag in external libraries on
+   some platforms, this merely rounds up to the nearest second if
+   usleep() does not exist.  If sub-second resolution is important,
+   then use a more powerful interface to begin with.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#include <errno.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+# define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+# include <windows.h>
+#endif
+
+#ifndef HAVE_USLEEP
+# define HAVE_USLEEP 0
+#endif
+
+/* Sleep for MICRO microseconds, which can be greater than 1 second.
+   Return -1 and set errno to EINVAL on range error (about 4295
+   seconds), or 0 on success.  Interaction with SIGALARM is
+   unspecified.  */
+
+int
+usleep (useconds_t micro)
+#undef usleep
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  unsigned int milliseconds = micro / 1000;
+  if (sizeof milliseconds < sizeof micro && micro / 1000 != milliseconds)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  if (micro % 1000)
+    milliseconds++;
+  Sleep (milliseconds);
+  return 0;
+#else
+  unsigned int seconds = micro / 1000000;
+  if (sizeof seconds < sizeof micro && micro / 1000000 != seconds)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  if (!HAVE_USLEEP && micro % 1000000)
+    seconds++;
+  while ((seconds = sleep (seconds)) != 0);
+
+# if !HAVE_USLEEP
+#  define usleep(x) 0
+# endif
+  return usleep (micro % 1000000);
+#endif
+}
diff --git a/gnulib-tests/w32sock.h b/gnulib-tests/w32sock.h
new file mode 100644
index 0000000..9c23c9d
--- /dev/null
+++ b/gnulib-tests/w32sock.h
@@ -0,0 +1,140 @@
+/* w32sock.h --- internal auxiliary functions for Windows socket functions
+
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <errno.h>
+
+/* Get O_RDWR and O_BINARY.  */
+#include <fcntl.h>
+
+/* Get _open_osfhandle().  */
+#include <io.h>
+
+/* Get _get_osfhandle().  */
+#if GNULIB_MSVC_NOTHROW
+# include "msvc-nothrow.h"
+#else
+# include <io.h>
+#endif
+
+#define FD_TO_SOCKET(fd)   ((SOCKET) _get_osfhandle ((fd)))
+#define SOCKET_TO_FD(fh)   (_open_osfhandle ((intptr_t) (fh), O_RDWR | O_BINARY))
+
+static inline void
+set_winsock_errno (void)
+{
+  int err = WSAGetLastError ();
+
+  /* Map some WSAE* errors to the runtime library's error codes.  */
+  switch (err)
+    {
+    case WSA_INVALID_HANDLE:
+      errno = EBADF;
+      break;
+    case WSA_NOT_ENOUGH_MEMORY:
+      errno = ENOMEM;
+      break;
+    case WSA_INVALID_PARAMETER:
+      errno = EINVAL;
+      break;
+    case WSAENAMETOOLONG:
+      errno = ENAMETOOLONG;
+      break;
+    case WSAENOTEMPTY:
+      errno = ENOTEMPTY;
+      break;
+    case WSAEWOULDBLOCK:
+      errno = EWOULDBLOCK;
+      break;
+    case WSAEINPROGRESS:
+      errno = EINPROGRESS;
+      break;
+    case WSAEALREADY:
+      errno = EALREADY;
+      break;
+    case WSAENOTSOCK:
+      errno = ENOTSOCK;
+      break;
+    case WSAEDESTADDRREQ:
+      errno = EDESTADDRREQ;
+      break;
+    case WSAEMSGSIZE:
+      errno = EMSGSIZE;
+      break;
+    case WSAEPROTOTYPE:
+      errno = EPROTOTYPE;
+      break;
+    case WSAENOPROTOOPT:
+      errno = ENOPROTOOPT;
+      break;
+    case WSAEPROTONOSUPPORT:
+      errno = EPROTONOSUPPORT;
+      break;
+    case WSAEOPNOTSUPP:
+      errno = EOPNOTSUPP;
+      break;
+    case WSAEAFNOSUPPORT:
+      errno = EAFNOSUPPORT;
+      break;
+    case WSAEADDRINUSE:
+      errno = EADDRINUSE;
+      break;
+    case WSAEADDRNOTAVAIL:
+      errno = EADDRNOTAVAIL;
+      break;
+    case WSAENETDOWN:
+      errno = ENETDOWN;
+      break;
+    case WSAENETUNREACH:
+      errno = ENETUNREACH;
+      break;
+    case WSAENETRESET:
+      errno = ENETRESET;
+      break;
+    case WSAECONNABORTED:
+      errno = ECONNABORTED;
+      break;
+    case WSAECONNRESET:
+      errno = ECONNRESET;
+      break;
+    case WSAENOBUFS:
+      errno = ENOBUFS;
+      break;
+    case WSAEISCONN:
+      errno = EISCONN;
+      break;
+    case WSAENOTCONN:
+      errno = ENOTCONN;
+      break;
+    case WSAETIMEDOUT:
+      errno = ETIMEDOUT;
+      break;
+    case WSAECONNREFUSED:
+      errno = ECONNREFUSED;
+      break;
+    case WSAELOOP:
+      errno = ELOOP;
+      break;
+    case WSAEHOSTUNREACH:
+      errno = EHOSTUNREACH;
+      break;
+    default:
+      errno = (err > 10000 && err < 10025) ? err - 10000 : err;
+      break;
+    }
+}
diff --git a/gnulib-tests/warn-on-use.h b/gnulib-tests/warn-on-use.h
new file mode 100644
index 0000000..1be2cbb
--- /dev/null
+++ b/gnulib-tests/warn-on-use.h
@@ -0,0 +1,131 @@
+/* A C macro for emitting warnings if a function is used.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* _GL_WARN_ON_USE (function, "literal string") issues a declaration
+   for FUNCTION which will then trigger a compiler warning containing
+   the text of "literal string" anywhere that function is called, if
+   supported by the compiler.  If the compiler does not support this
+   feature, the macro expands to an unused extern declaration.
+
+   _GL_WARN_ON_USE_ATTRIBUTE ("literal string") expands to the
+   attribute used in _GL_WARN_ON_USE.  If the compiler does not support
+   this feature, it expands to empty.
+
+   These macros are useful for marking a function as a potential
+   portability trap, with the intent that "literal string" include
+   instructions on the replacement function that should be used
+   instead.
+   _GL_WARN_ON_USE is for functions with 'extern' linkage.
+   _GL_WARN_ON_USE_ATTRIBUTE is for functions with 'static' or 'inline'
+   linkage.
+
+   However, one of the reasons that a function is a portability trap is
+   if it has the wrong signature.  Declaring FUNCTION with a different
+   signature in C is a compilation error, so this macro must use the
+   same type as any existing declaration so that programs that avoid
+   the problematic FUNCTION do not fail to compile merely because they
+   included a header that poisoned the function.  But this implies that
+   _GL_WARN_ON_USE is only safe to use if FUNCTION is known to already
+   have a declaration.  Use of this macro implies that there must not
+   be any other macro hiding the declaration of FUNCTION; but
+   undefining FUNCTION first is part of the poisoning process anyway
+   (although for symbols that are provided only via a macro, the result
+   is a compilation error rather than a warning containing
+   "literal string").  Also note that in C++, it is only safe to use if
+   FUNCTION has no overloads.
+
+   For an example, it is possible to poison 'getline' by:
+   - adding a call to gl_WARN_ON_USE_PREPARE([[#include <stdio.h>]],
+     [getline]) in configure.ac, which potentially defines
+     HAVE_RAW_DECL_GETLINE
+   - adding this code to a header that wraps the system <stdio.h>:
+     #undef getline
+     #if HAVE_RAW_DECL_GETLINE
+     _GL_WARN_ON_USE (getline, "getline is required by POSIX 2008, but"
+       "not universally present; use the gnulib module getline");
+     #endif
+
+   It is not possible to directly poison global variables.  But it is
+   possible to write a wrapper accessor function, and poison that
+   (less common usage, like &environ, will cause a compilation error
+   rather than issue the nice warning, but the end result of informing
+   the developer about their portability problem is still achieved):
+     #if HAVE_RAW_DECL_ENVIRON
+     static char ***
+     rpl_environ (void) { return &environ; }
+     _GL_WARN_ON_USE (rpl_environ, "environ is not always properly declared");
+     # undef environ
+     # define environ (*rpl_environ ())
+     #endif
+   or better (avoiding contradictory use of 'static' and 'extern'):
+     #if HAVE_RAW_DECL_ENVIRON
+     static char ***
+     _GL_WARN_ON_USE_ATTRIBUTE ("environ is not always properly declared")
+     rpl_environ (void) { return &environ; }
+     # undef environ
+     # define environ (*rpl_environ ())
+     #endif
+   */
+#ifndef _GL_WARN_ON_USE
+
+# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
+/* A compiler attribute is available in gcc versions 4.3.0 and later.  */
+#  define _GL_WARN_ON_USE(function, message) \
+extern __typeof__ (function) function __attribute__ ((__warning__ (message)))
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message) \
+  __attribute__ ((__warning__ (message)))
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+/* Verify the existence of the function.  */
+#  define _GL_WARN_ON_USE(function, message) \
+extern __typeof__ (function) function
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message)
+# else /* Unsupported.  */
+#  define _GL_WARN_ON_USE(function, message) \
+_GL_WARN_EXTERN_C int _gl_warn_on_use
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message)
+# endif
+#endif
+
+/* _GL_WARN_ON_USE_CXX (function, rettype, parameters_and_attributes, "string")
+   is like _GL_WARN_ON_USE (function, "string"), except that the function is
+   declared with the given prototype, consisting of return type, parameters,
+   and attributes.
+   This variant is useful for overloaded functions in C++. _GL_WARN_ON_USE does
+   not work in this case.  */
+#ifndef _GL_WARN_ON_USE_CXX
+# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
+#  define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
+extern rettype function parameters_and_attributes \
+     __attribute__ ((__warning__ (msg)))
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+/* Verify the existence of the function.  */
+#  define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
+extern rettype function parameters_and_attributes
+# else /* Unsupported.  */
+#  define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
+_GL_WARN_EXTERN_C int _gl_warn_on_use
+# endif
+#endif
+
+/* _GL_WARN_EXTERN_C declaration;
+   performs the declaration with C linkage.  */
+#ifndef _GL_WARN_EXTERN_C
+# if defined __cplusplus
+#  define _GL_WARN_EXTERN_C extern "C"
+# else
+#  define _GL_WARN_EXTERN_C extern
+# endif
+#endif
diff --git a/gnulib-tests/wctob.c b/gnulib-tests/wctob.c
new file mode 100644
index 0000000..7d08863
--- /dev/null
+++ b/gnulib-tests/wctob.c
@@ -0,0 +1,38 @@
+/* Convert wide character to unibyte character.
+   Copyright (C) 2008, 2010-2020 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2008.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wchar.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+wctob (wint_t wc)
+{
+  char buf[64];
+
+  if (!(MB_CUR_MAX <= sizeof (buf)))
+    abort ();
+  /* Handle the case where WEOF is a value that does not fit in a wchar_t.  */
+  if (wc == (wchar_t)wc)
+    if (wctomb (buf, (wchar_t)wc) == 1)
+      return (unsigned char) buf[0];
+  return EOF;
+}
diff --git a/gnulib-tests/wctomb-impl.h b/gnulib-tests/wctomb-impl.h
new file mode 100644
index 0000000..cca56bb
--- /dev/null
+++ b/gnulib-tests/wctomb-impl.h
@@ -0,0 +1,34 @@
+/* Convert wide character to multibyte character.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+int
+wctomb (char *s, wchar_t wc)
+{
+  if (s == NULL)
+    return 0;
+  else
+    {
+      mbstate_t state;
+      size_t result;
+
+      memset (&state, 0, sizeof (mbstate_t));
+      result = wcrtomb (s, wc, &state);
+      if (result == (size_t)-1)
+        return -1;
+      return result;
+    }
+}
diff --git a/gnulib-tests/wctomb.c b/gnulib-tests/wctomb.c
new file mode 100644
index 0000000..55ec077
--- /dev/null
+++ b/gnulib-tests/wctomb.c
@@ -0,0 +1,25 @@
+/* Convert wide character to multibyte character.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include <string.h>
+#include <wchar.h>
+
+#include "wctomb-impl.h"
diff --git a/gnulib-tests/zerosize-ptr.h b/gnulib-tests/zerosize-ptr.h
new file mode 100644
index 0000000..4a5d267
--- /dev/null
+++ b/gnulib-tests/zerosize-ptr.h
@@ -0,0 +1,81 @@
+/* Return a pointer to a zero-size object in memory.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* ISO C 99 does not allow memcmp(), memchr() etc. to be invoked with a NULL
+   argument.  Therefore this file produces a non-NULL pointer which cannot
+   be dereferenced, if possible.  */
+
+/* On Android, when targeting Android 4.4 or older with a GCC toolchain,
+   prevent a compilation error
+     "error: call to 'mmap' declared with attribute error: mmap is not
+      available with _FILE_OFFSET_BITS=64 when using GCC until android-21.
+      Either raise your minSdkVersion, disable _FILE_OFFSET_BITS=64, or
+      switch to Clang."
+   The files that we access in this compilation unit are less than 2 GB
+   large.  */
+#if defined __ANDROID__
+# undef _FILE_OFFSET_BITS
+# undef __USE_FILE_OFFSET64
+#endif
+
+#include <stdlib.h>
+
+/* Test whether mmap() and mprotect() are available.
+   We don't use HAVE_MMAP, because AC_FUNC_MMAP would not define it on HP-UX.
+   HAVE_MPROTECT is not enough, because mingw does not have mmap() but has an
+   mprotect() function in libgcc.a.  */
+#if HAVE_SYS_MMAN_H && HAVE_MPROTECT
+# include <fcntl.h>
+# include <unistd.h>
+# include <sys/types.h>
+# include <sys/mman.h>
+/* Define MAP_FILE when it isn't otherwise.  */
+# ifndef MAP_FILE
+#  define MAP_FILE 0
+# endif
+#endif
+
+/* Return a pointer to a zero-size object in memory (that is, actually, a
+   pointer to a page boundary where the previous page is readable and writable
+   and the next page is neither readable not writable), if possible.
+   Return NULL otherwise.  */
+
+static void *
+zerosize_ptr (void)
+{
+/* Use mmap and mprotect when they exist.  Don't test HAVE_MMAP, because it is
+   not defined on HP-UX 11 (since it does not support MAP_FIXED).  */
+#if HAVE_SYS_MMAN_H && HAVE_MPROTECT
+# if HAVE_MAP_ANONYMOUS
+  const int flags = MAP_ANONYMOUS | MAP_PRIVATE;
+  const int fd = -1;
+# else /* !HAVE_MAP_ANONYMOUS */
+  const int flags = MAP_FILE | MAP_PRIVATE;
+  int fd = open ("/dev/zero", O_RDONLY, 0666);
+  if (fd >= 0)
+# endif
+    {
+      int pagesize = getpagesize ();
+      char *two_pages =
+        (char *) mmap (NULL, 2 * pagesize, PROT_READ | PROT_WRITE,
+                       flags, fd, 0);
+      if (two_pages != (char *)(-1)
+          && mprotect (two_pages + pagesize, pagesize, PROT_NONE) == 0)
+        return two_pages + pagesize;
+    }
+#endif
+  return NULL;
+}