1 | /* Test nan functions stack overflow (bug 16962). |
2 | Copyright (C) 2015-2022 Free Software Foundation, Inc. |
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 |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <math.h> |
20 | #include <stdio.h> |
21 | #include <string.h> |
22 | #include <sys/resource.h> |
23 | #include <stdlib.h> |
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, rlimits: &lim); |
34 | lim.rlim_cur = STACK_LIM; |
35 | setrlimit (RLIMIT_STACK, rlimits: &lim); |
36 | char *nanstr = malloc (STRING_SIZE); |
37 | if (nanstr == NULL) |
38 | { |
39 | puts (s: "malloc failed, cannot test" ); |
40 | return 77; |
41 | } |
42 | memset (s: nanstr, c: '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); |
60 | NAN_TEST (long double, nanl); |
61 | return result; |
62 | } |
63 | |
64 | #define TEST_FUNCTION do_test () |
65 | #include "../test-skeleton.c" |
66 | |