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glibc/math/test-nan-overflow.c
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/* Test nan functions stack overflow (bug 16962). | |
Copyright (C) 2015-2016 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 <math.h> | |
#include <stdio.h> | |
#include <string.h> | |
#include <sys/resource.h> | |
#define STACK_LIM 1048576 | |
#define STRING_SIZE (2 * STACK_LIM) | |
static int | |
do_test (void) | |
{ | |
int result = 0; | |
struct rlimit lim; | |
getrlimit (RLIMIT_STACK, &lim); | |
lim.rlim_cur = STACK_LIM; | |
setrlimit (RLIMIT_STACK, &lim); | |
char *nanstr = malloc (STRING_SIZE); | |
if (nanstr == NULL) | |
{ | |
puts ("malloc failed, cannot test"); | |
return 77; | |
} | |
memset (nanstr, '0', STRING_SIZE - 1); | |
nanstr[STRING_SIZE - 1] = 0; | |
#define NAN_TEST(TYPE, FUNC) \ | |
do \ | |
{ \ | |
char *volatile p = nanstr; \ | |
volatile TYPE v = FUNC (p); \ | |
if (isnan (v)) \ | |
puts ("PASS: " #FUNC); \ | |
else \ | |
{ \ | |
puts ("FAIL: " #FUNC); \ | |
result = 1; \ | |
} \ | |
} \ | |
while (0) | |
NAN_TEST (float, nanf); | |
NAN_TEST (double, nan); | |
#ifndef NO_LONG_DOUBLE | |
NAN_TEST (long double, nanl); | |
#endif | |
return result; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |