glibc/posix/bug-regex7.c
Paul Eggert 581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

91 lines
2.3 KiB
C

/* Test for regs allocation in re_search and re_match.
Copyright (C) 2002-2022 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 (&regex, '\0', sizeof (regex));
regs.start = regs.end = NULL;
regs.num_regs = 0;
s = re_compile_pattern ("a", 1, &regex);
if (s != NULL)
{
puts ("failed to compile pattern \"a\"");
result = 1;
}
else
{
match = re_search (&regex, "baobab", 6, 0, 6, &regs);
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 (&regex, '\0', sizeof (regex));
s = re_compile_pattern ("\\(\\(\\(a\\)\\)\\)", 13, &regex);
if (s != NULL)
{
puts ("failed to compile pattern /\\(\\(\\(a\\)\\)\\)/");
result = 1;
}
else
{
match = re_match (&regex, "apl", 3, 0, &regs);
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;
}