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#!/usr/bin/perl
# Copyright (C) 2008-2011 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://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 $long_line = 'o' x (16 * 1024 + 1);
my @Tests =
(
['segfault', '-r', {IN=>"a\n"}, {IN=>"b\n"}, {OUT=>"a\nb\n"}],
['segfault2','-r', {IN=>"a\nb\n"}, {IN=>"1\n2\n"}, {OUT=>"b\na\n2\n1\n"}],
['basic-0', '', {IN=>""}, {OUT=>""}],
['basic-a', '', {IN=>"a"}, {OUT=>"a"}],
['basic-b', '', {IN=>"\n"}, {OUT=>"\n"}],
['basic-c', '', {IN=>"a\n"}, {OUT=>"a\n"}],
['basic-d', '', {IN=>"a\nb"}, {OUT=>"ba\n"}],
['basic-e', '', {IN=>"a\nb\n"}, {OUT=>"b\na\n"}],
['basic-f', '', {IN=>"1234567\n8\n"}, {OUT=>"8\n1234567\n"}],
['basic-g', '', {IN=>"12345678\n9\n"}, {OUT=>"9\n12345678\n"}],
['basic-h', '', {IN=>"123456\n8\n"}, {OUT=>"8\n123456\n"}],
['basic-i', '', {IN=>"12345\n8\n"}, {OUT=>"8\n12345\n"}],
['basic-j', '', {IN=>"1234\n8\n"}, {OUT=>"8\n1234\n"}],
['basic-k', '', {IN=>"123\n8\n"}, {OUT=>"8\n123\n"}],
['opt-b', '-b', {IN=>"\na\nb\nc"}, {OUT=>"\nc\nb\na"}],
['opt-s', '-s:', {IN=>"a:b:c:"}, {OUT=>"c:b:a:"}],
['opt-sb', qw(-s : -b), {IN=>":a:b:c"}, {OUT=>":c:b:a"}],
['opt-r', qw(-r -s '\._+'),
{IN=>"1._2.__3.___4._"},
{OUT=>"4._3.___2.__1._"}],
['opt-r2', qw(-r -s '\._+'),
{IN=>"a.___b.__1._2.__3.___4._"},
{OUT=>"4._3.___2.__1._b.__a.___"}],
# This gave incorrect output (.___4._2.__3._1) with tac-1.22.
['opt-br', qw(-b -r -s '\._+'),
{IN=>"._1._2.__3.___4"}, {OUT=>".___4.__3._2._1"}],
['opt-br2', qw(-b -r -s '\._+'),
{IN=>".__x.___y.____z._1._2.__3.___4"},
{OUT=>".___4.__3._2._1.____z.___y.__x"}],
['pipe-bad-tmpdir',
{ENV => "TMPDIR=$bad_dir"},
{IN_PIPE => "a\n"},
{ERR_SUBST => "s,`$bad_dir': .*,...,"},
{ERR => "$prog: failed to create temporary file in ...\n"},
{EXIT => 1}],
# 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;
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