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/* Test for regs allocation in re_search and re_match.
Copyright (C) 2002-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <regex.h>
int
main (void)
{
struct re_pattern_buffer regex;
struct re_registers regs;
const char *s;
int match, n;
int result = 0;
memset (®ex, '\0', sizeof (regex));
regs.start = regs.end = NULL;
regs.num_regs = 0;
s = re_compile_pattern ("a", 1, ®ex);
if (s != NULL)
{
puts ("failed to compile pattern \"a\"");
result = 1;
}
else
{
match = re_search (®ex, "baobab", 6, 0, 6, ®s);
n = 1;
if (match != 1)
{
printf ("re_search returned %d, expected 1\n", match);
result = 1;
}
else if (regs.num_regs <= n || regs.start[n] != -1 || regs.end[n] != -1)
{
puts ("re_search failed to fill the -1 sentinel");
result = 1;
}
}
free (regex.buffer);
memset (®ex, '\0', sizeof (regex));
s = re_compile_pattern ("\\(\\(\\(a\\)\\)\\)", 13, ®ex);
if (s != NULL)
{
puts ("failed to compile pattern /\\(\\(\\(a\\)\\)\\)/");
result = 1;
}
else
{
match = re_match (®ex, "apl", 3, 0, ®s);
n = 4;
if (match != 1)
{
printf ("re_match returned %d, expected 1\n", match);
result = 1;
}
else if (regs.num_regs <= n || regs.start[n] != -1 || regs.end[n] != -1)
{
puts ("re_match failed to fill the -1 sentinel");
result = 1;
}
}
if (result == 0)
puts (" -> OK");
return result;
}
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