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Diffstat (limited to 'math/test-nan-overflow.c')
| -rw-r--r-- | math/test-nan-overflow.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/math/test-nan-overflow.c b/math/test-nan-overflow.c new file mode 100644 index 0000000000..f56aaf3c92 --- /dev/null +++ b/math/test-nan-overflow.c @@ -0,0 +1,66 @@ +/* Test nan functions stack overflow (bug 16962). + Copyright (C) 2015 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" |