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/* Copyright (C) 2013 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
<http://www.gnu.org/licenses/>. */
#include <locale.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
/* Verify that strcoll does not crash for large strings for which it cannot
cache weight lookup results. The size is large enough to cause integer
overflows on 32-bit as well as buffer overflows on 64-bit. The test should
work reasonably reliably when overcommit is disabled, but it obviously
depends on how much memory the system has. There's a limitation to this
test in that it does not run to completion. Actually collating such a
large string can take days and we can't have xcheck running that long. For
that reason, we run the test for about 5 minutes and then assume that
everything is fine if there are no crashes. */
#define SIZE 0x40000000ul
int
do_test (void)
{
if (setlocale (LC_COLLATE, "en_GB.UTF-8") == NULL)
{
puts ("setlocale failed, cannot test for overflow");
return 0;
}
char *p = malloc (SIZE);
if (p == NULL)
{
puts ("could not allocate memory");
return 1;
}
memset (p, 'x', SIZE - 1);
p[SIZE - 1] = 0;
printf ("%d\n", strcoll (p, p));
return 0;
}
#define TIMEOUT 300
#define EXPECTED_SIGNAL SIGALRM
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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