glibc/math/test-nan-overflow.c
Paul Eggert 2b778ceb40 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
2021-01-02 12:17:34 -08:00

66 lines
1.8 KiB
C

/* Test nan functions stack overflow (bug 16962).
Copyright (C) 2015-2021 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 <math.h>
#include <stdio.h>
#include <string.h>
#include <sys/resource.h>
#include <stdlib.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);
NAN_TEST (long double, nanl);
return result;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"