From c9addba5cc770d2d231b34f6739f32c6be8690f1 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 21:37:10 +0200 Subject: Adding upstream version 2.12.0. Signed-off-by: Daniel Baumann --- gl/m4/realloc.m4 | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 gl/m4/realloc.m4 (limited to 'gl/m4/realloc.m4') diff --git a/gl/m4/realloc.m4 b/gl/m4/realloc.m4 new file mode 100644 index 0000000..2605391 --- /dev/null +++ b/gl/m4/realloc.m4 @@ -0,0 +1,63 @@ +# realloc.m4 serial 27 +dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +# This is adapted with modifications from upstream Autoconf here: +# https://git.savannah.gnu.org/cgit/autoconf.git/tree/lib/autoconf/functions.m4?id=v2.70#n1455 +AC_DEFUN([_AC_FUNC_REALLOC_IF], +[ + AC_REQUIRE([AC_CANONICAL_HOST])dnl for cross-compiles + AC_CACHE_CHECK([whether realloc (0, 0) returns nonnull], + [ac_cv_func_realloc_0_nonnull], + [AC_RUN_IFELSE( + [AC_LANG_PROGRAM( + [[#include + ]], + [[void *p = realloc (0, 0); + int result = !p; + free (p); + return result;]]) + ], + [ac_cv_func_realloc_0_nonnull=yes], + [ac_cv_func_realloc_0_nonnull=no], + [case "$host_os" in + # Guess yes on platforms where we know the result. + *-gnu* | freebsd* | netbsd* | openbsd* | bitrig* \ + | gnu* | *-musl* | midipix* | midnightbsd* \ + | hpux* | solaris* | cygwin* | mingw* | msys* ) + ac_cv_func_realloc_0_nonnull="guessing yes" ;; + # If we don't know, obey --enable-cross-guesses. + *) ac_cv_func_realloc_0_nonnull="$gl_cross_guess_normal" ;; + esac + ]) + ]) + AS_CASE([$ac_cv_func_realloc_0_nonnull], [*yes], [$1], [$2]) +])# AC_FUNC_REALLOC + +# gl_FUNC_REALLOC_GNU +# ------------------- +# Replace realloc if it is not compatible with GNU libc. +AC_DEFUN([gl_FUNC_REALLOC_GNU], +[ + AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) + AC_REQUIRE([gl_FUNC_REALLOC_POSIX]) + if test $REPLACE_REALLOC_FOR_REALLOC_GNU = 0; then + _AC_FUNC_REALLOC_IF([], [REPLACE_REALLOC_FOR_REALLOC_GNU=1]) + fi +])# gl_FUNC_REALLOC_GNU + +# gl_FUNC_REALLOC_POSIX +# --------------------- +# Test whether 'realloc' is POSIX compliant (sets errno to ENOMEM when it +# fails, and doesn't mess up with ptrdiff_t overflow), +# and replace realloc if it is not. +AC_DEFUN([gl_FUNC_REALLOC_POSIX], +[ + AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) + AC_REQUIRE([gl_FUNC_MALLOC_POSIX]) + if test $REPLACE_MALLOC_FOR_MALLOC_POSIX = 1; then + REPLACE_REALLOC_FOR_REALLOC_POSIX=1 + fi +]) -- cgit v1.2.3