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68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
/* Test nan functions stack overflow (bug 16962).
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Copyright (C) 2015-2017 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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<http://www.gnu.org/licenses/>. */
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#include <math.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/resource.h>
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#include <stdlib.h>
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#define STACK_LIM 1048576
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#define STRING_SIZE (2 * STACK_LIM)
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static int
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do_test (void)
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{
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int result = 0;
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struct rlimit lim;
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getrlimit (RLIMIT_STACK, &lim);
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lim.rlim_cur = STACK_LIM;
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setrlimit (RLIMIT_STACK, &lim);
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char *nanstr = malloc (STRING_SIZE);
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if (nanstr == NULL)
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{
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puts ("malloc failed, cannot test");
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return 77;
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}
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memset (nanstr, '0', STRING_SIZE - 1);
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nanstr[STRING_SIZE - 1] = 0;
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#define NAN_TEST(TYPE, FUNC) \
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do \
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{ \
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char *volatile p = nanstr; \
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volatile TYPE v = FUNC (p); \
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if (isnan (v)) \
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puts ("PASS: " #FUNC); \
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else \
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{ \
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puts ("FAIL: " #FUNC); \
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result = 1; \
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} \
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} \
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while (0)
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NAN_TEST (float, nanf);
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NAN_TEST (double, nan);
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#ifndef NO_LONG_DOUBLE
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NAN_TEST (long double, nanl);
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#endif
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return result;
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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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