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98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
/* Test integer wraparound in hcreate.
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Copyright (C) 2016-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <limits.h>
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#include <search.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/resource.h>
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static void
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test_size (size_t size)
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{
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int res = hcreate (size);
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if (res == 0)
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{
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if (errno == ENOMEM)
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return;
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printf ("error: hcreate (%zu): %m\n", size);
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exit (1);
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}
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char *keys[100];
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for (int i = 0; i < 100; ++i)
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{
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if (asprintf (keys + i, "%d", i) < 0)
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{
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printf ("error: asprintf: %m\n");
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exit (1);
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}
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ENTRY e = { keys[i], (char *) "value" };
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if (hsearch (e, ENTER) == NULL)
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{
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printf ("error: hsearch (\"%s\"): %m\n", keys[i]);
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exit (1);
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}
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}
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hdestroy ();
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for (int i = 0; i < 100; ++i)
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free (keys[i]);
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}
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static int
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do_test (void)
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{
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/* Limit the size of the process, so that memory allocation will
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fail without impacting the entire system. */
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{
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struct rlimit limit;
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if (getrlimit (RLIMIT_AS, &limit) != 0)
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{
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printf ("getrlimit (RLIMIT_AS) failed: %m\n");
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return 1;
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}
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long target = 100 * 1024 * 1024;
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if (limit.rlim_cur == RLIM_INFINITY || limit.rlim_cur > target)
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{
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limit.rlim_cur = target;
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if (setrlimit (RLIMIT_AS, &limit) != 0)
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{
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printf ("setrlimit (RLIMIT_AS) failed: %m\n");
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return 1;
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}
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}
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}
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test_size (500);
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test_size (-1);
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test_size (-3);
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test_size (INT_MAX - 2);
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test_size (INT_MAX - 1);
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test_size (INT_MAX);
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test_size (((unsigned) INT_MAX) + 1);
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test_size (UINT_MAX - 2);
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test_size (UINT_MAX - 1);
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test_size (UINT_MAX);
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return 0;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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