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/* Test integer wraparound in hcreate.
Copyright (C) 2016-2022 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 <errno.h>
#include <limits.h>
#include <search.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/resource.h>
static void
test_size (size_t size)
{
int res = hcreate (size);
if (res == 0)
{
if (errno == ENOMEM)
return;
printf ("error: hcreate (%zu): %m\n", size);
exit (1);
}
char *keys[100];
for (int i = 0; i < 100; ++i)
{
if (asprintf (keys + i, "%d", i) < 0)
{
printf ("error: asprintf: %m\n");
exit (1);
}
ENTRY e = { keys[i], (char *) "value" };
if (hsearch (e, ENTER) == NULL)
{
printf ("error: hsearch (\"%s\"): %m\n", keys[i]);
exit (1);
}
}
hdestroy ();
for (int i = 0; i < 100; ++i)
free (keys[i]);
}
static int
do_test (void)
{
/* Limit the size of the process, so that memory allocation will
fail without impacting the entire system. */
{
struct rlimit limit;
if (getrlimit (RLIMIT_AS, &limit) != 0)
{
printf ("getrlimit (RLIMIT_AS) failed: %m\n");
return 1;
}
long target = 100 * 1024 * 1024;
if (limit.rlim_cur == RLIM_INFINITY || limit.rlim_cur > target)
{
limit.rlim_cur = target;
if (setrlimit (RLIMIT_AS, &limit) != 0)
{
printf ("setrlimit (RLIMIT_AS) failed: %m\n");
return 1;
}
}
}
test_size (500);
test_size (-1);
test_size (-3);
test_size (INT_MAX - 2);
test_size (INT_MAX - 1);
test_size (INT_MAX);
test_size (((unsigned) INT_MAX) + 1);
test_size (UINT_MAX - 2);
test_size (UINT_MAX - 1);
test_size (UINT_MAX);
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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