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8f5e8b01 | 1 | /* Test nan functions stack overflow (bug 16962). |
2b778ceb | 2 | Copyright (C) 2015-2021 Free Software Foundation, Inc. |
8f5e8b01 JM |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
8f5e8b01 JM |
18 | |
19 | #include <math.h> | |
20 | #include <stdio.h> | |
21 | #include <string.h> | |
22 | #include <sys/resource.h> | |
c3174688 | 23 | #include <stdlib.h> |
8f5e8b01 JM |
24 | |
25 | #define STACK_LIM 1048576 | |
26 | #define STRING_SIZE (2 * STACK_LIM) | |
27 | ||
28 | static int | |
29 | do_test (void) | |
30 | { | |
31 | int result = 0; | |
32 | struct rlimit lim; | |
33 | getrlimit (RLIMIT_STACK, &lim); | |
34 | lim.rlim_cur = STACK_LIM; | |
35 | setrlimit (RLIMIT_STACK, &lim); | |
36 | char *nanstr = malloc (STRING_SIZE); | |
37 | if (nanstr == NULL) | |
38 | { | |
39 | puts ("malloc failed, cannot test"); | |
40 | return 77; | |
41 | } | |
42 | memset (nanstr, '0', STRING_SIZE - 1); | |
43 | nanstr[STRING_SIZE - 1] = 0; | |
44 | #define NAN_TEST(TYPE, FUNC) \ | |
45 | do \ | |
46 | { \ | |
47 | char *volatile p = nanstr; \ | |
48 | volatile TYPE v = FUNC (p); \ | |
49 | if (isnan (v)) \ | |
50 | puts ("PASS: " #FUNC); \ | |
51 | else \ | |
52 | { \ | |
53 | puts ("FAIL: " #FUNC); \ | |
54 | result = 1; \ | |
55 | } \ | |
56 | } \ | |
57 | while (0) | |
58 | NAN_TEST (float, nanf); | |
59 | NAN_TEST (double, nan); | |
8f5e8b01 | 60 | NAN_TEST (long double, nanl); |
8f5e8b01 JM |
61 | return result; |
62 | } | |
63 | ||
64 | #define TEST_FUNCTION do_test () | |
65 | #include "../test-skeleton.c" |