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-rwxr-xr-xtests/tac/tac-2-nonseekable.sh45
-rwxr-xr-xtests/tac/tac-continue.sh76
-rwxr-xr-xtests/tac/tac.pl89
3 files changed, 210 insertions, 0 deletions
diff --git a/tests/tac/tac-2-nonseekable.sh b/tests/tac/tac-2-nonseekable.sh
new file mode 100755
index 0000000..8e8075f
--- /dev/null
+++ b/tests/tac/tac-2-nonseekable.sh
@@ -0,0 +1,45 @@
+#!/bin/sh
+# ensure that tac works with non-seekable or quasi-seekable inputs
+
+# Copyright (C) 2011-2023 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# 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=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ tac
+
+echo x | tac - - > out 2> err || fail=1
+echo x > exp || framework_failure_
+compare exp out || fail=1
+compare /dev/null err || fail=1
+
+# Make sure it works on funny files in /proc and /sys.
+
+for file in /proc/version /sys/kernel/profiling; do
+ if test -r $file; then
+ cp -f $file copy &&
+ tac copy > exp1 || framework_failure_
+
+ tac $file > out1 || fail=1
+ compare exp1 out1 || fail=1
+ fi
+done
+
+# Assume timeout is due to failure to close stdin with <&-
+# which was seen on NetBSD 7.1 / x86_64
+returns_ 124 timeout 10 tac - - <&- 2>err && skip_ 'error closing stdin'
+# This failed due to heap corruption from v8.15-v8.25 inclusive.
+returns_ 1 timeout 10 tac - - <&- 2>err || fail=1
+
+Exit $fail
diff --git a/tests/tac/tac-continue.sh b/tests/tac/tac-continue.sh
new file mode 100755
index 0000000..f01a772
--- /dev/null
+++ b/tests/tac/tac-continue.sh
@@ -0,0 +1,76 @@
+#!/bin/sh
+# Ensure that tac processes all command line arguments, even
+# when it encounters an error with say the first one.
+# With coreutils-5.2.1 and earlier, this test would fail.
+
+# Copyright (C) 2004-2023 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ tac
+
+# See if the envvar is defined.
+if test x = "x$FULL_PARTITION_TMPDIR"; then
+ skip_ "FULL_PARTITION_TMPDIR not defined"
+fi
+
+if ! test -d "$FULL_PARTITION_TMPDIR"; then
+ echo "$0: $FULL_PARTITION_TMPDIR:" \
+ "\$FULL_PARTITION_TMPDIR does not specify a directory" 1>&2
+ Exit 1
+fi
+
+fp_tmp="$FULL_PARTITION_TMPDIR/tac-cont-$$"
+cleanup_()
+{
+ # Terminate any background process
+ # and remove tmp dir
+ rm -f "$fp_tmp"
+ kill $pid 2>/dev/null && wait $pid
+}
+
+# Make sure we can create an empty file there (i.e., no shortage of inodes).
+if ! touch $fp_tmp; then
+ echo "$0: $fp_tmp: cannot create empty file" 1>&2
+ Exit 1
+fi
+
+# Make sure that we fail when trying to create a file large enough
+# to consume a non-inode block.
+if seq 1000 > $fp_tmp 2>/dev/null; then
+ echo "$0: $FULL_PARTITION_TMPDIR: not a full partition" 1>&2
+ Exit 1
+fi
+
+seq 5 > in
+
+
+# Give tac a fifo command line argument.
+# This makes it try to create a temporary file in $TMPDIR.
+mkfifo_or_skip_ fifo
+seq 1000 > fifo & pid=$!
+TMPDIR=$FULL_PARTITION_TMPDIR tac fifo in >out 2>err && fail=1
+
+cat <<\EOF > exp || framework_failure_
+5
+4
+3
+2
+1
+EOF
+
+compare exp out || fail=1
+
+Exit $fail
diff --git a/tests/tac/tac.pl b/tests/tac/tac.pl
new file mode 100755
index 0000000..dd67c80
--- /dev/null
+++ b/tests/tac/tac.pl
@@ -0,0 +1,89 @@
+#!/usr/bin/perl
+
+# Copyright (C) 2008-2023 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+use strict;
+
+my $prog = 'tac';
+
+# Turn off localization of executable's output.
+@ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;
+
+my $bad_dir = 'no/such/dir';
+
+# This must be longer than 16KiB to trigger the double free in coreutils-8.5.
+my $long_line = 'o' x (16 * 1024 + 1);
+
+my @Tests =
+(
+ ['segfault', '-r', {IN=>"a\n"}, {IN=>"b\n"}, {OUT=>"a\nb\n"}],
+ ['segfault2','-r', {IN=>"a\nb\n"}, {IN=>"1\n2\n"}, {OUT=>"b\na\n2\n1\n"}],
+
+ ['basic-0', '', {IN=>""}, {OUT=>""}],
+ ['basic-a', '', {IN=>"a"}, {OUT=>"a"}],
+ ['basic-b', '', {IN=>"\n"}, {OUT=>"\n"}],
+ ['basic-c', '', {IN=>"a\n"}, {OUT=>"a\n"}],
+ ['basic-d', '', {IN=>"a\nb"}, {OUT=>"ba\n"}],
+ ['basic-e', '', {IN=>"a\nb\n"}, {OUT=>"b\na\n"}],
+ ['basic-f', '', {IN=>"1234567\n8\n"}, {OUT=>"8\n1234567\n"}],
+ ['basic-g', '', {IN=>"12345678\n9\n"}, {OUT=>"9\n12345678\n"}],
+ ['basic-h', '', {IN=>"123456\n8\n"}, {OUT=>"8\n123456\n"}],
+ ['basic-i', '', {IN=>"12345\n8\n"}, {OUT=>"8\n12345\n"}],
+ ['basic-j', '', {IN=>"1234\n8\n"}, {OUT=>"8\n1234\n"}],
+ ['basic-k', '', {IN=>"123\n8\n"}, {OUT=>"8\n123\n"}],
+
+ ['nul-0', '-s ""', {IN=>""}, {OUT=>""}],
+ ['nul-a', '-s ""', {IN=>"a"}, {OUT=>"a"}],
+ ['nul-b', '-s ""', {IN=>"\0"}, {OUT=>"\0"}],
+ ['nul-c', '-s ""', {IN=>"a\0"}, {OUT=>"a\0"}],
+ ['nul-d', '-s ""', {IN=>"a\0b"}, {OUT=>"ba\0"}],
+ ['nul-e', '-s ""', {IN=>"a\0b\0"}, {OUT=>"b\0a\0"}],
+
+ ['opt-b', '-b', {IN=>"\na\nb\nc"}, {OUT=>"\nc\nb\na"}],
+ ['opt-s', '-s:', {IN=>"a:b:c:"}, {OUT=>"c:b:a:"}],
+ ['opt-sb', qw(-s : -b), {IN=>":a:b:c"}, {OUT=>":c:b:a"}],
+ ['opt-r', qw(-r -s '\._+'),
+ {IN=>"1._2.__3.___4._"},
+ {OUT=>"4._3.___2.__1._"}],
+
+ ['opt-r2', qw(-r -s '\._+'),
+ {IN=>"a.___b.__1._2.__3.___4._"},
+ {OUT=>"4._3.___2.__1._b.__a.___"}],
+
+ # This gave incorrect output (.___4._2.__3._1) with tac-1.22.
+ ['opt-br', qw(-b -r -s '\._+'),
+ {IN=>"._1._2.__3.___4"}, {OUT=>".___4.__3._2._1"}],
+
+ ['opt-br2', qw(-b -r -s '\._+'),
+ {IN=>".__x.___y.____z._1._2.__3.___4"},
+ {OUT=>".___4.__3._2._1.____z.___y.__x"}],
+
+ ['pipe-bad-tmpdir',
+ {ENV => "TMPDIR=$bad_dir"},
+ {IN_PIPE => "a\n"},
+ {OUT=>"a\n"}],
+
+ # coreutils-8.5's tac would double-free its primary buffer.
+ ['double-free', {IN=>$long_line}, {OUT=>$long_line}],
+);
+
+@Tests = triple_test \@Tests;
+
+my $save_temps = $ENV{DEBUG};
+my $verbose = $ENV{VERBOSE};
+
+my $fail = run_tests ($prog, $prog, \@Tests, $save_temps, $verbose);
+exit $fail;