1 | /* Test that sigprocmask does not read from the unused part of jmpbuf. |
2 | Copyright (C) 2017-2022 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 <stdlib.h> |
20 | #include <signal.h> |
21 | #include <string.h> |
22 | #include <errno.h> |
23 | #include <setjmpP.h> |
24 | #include <support/next_to_fault.h> |
25 | |
26 | #define SIZEOF_SIGSET_T sizeof (__jmp_buf_sigset_t) |
27 | |
28 | static int |
29 | do_test (void) |
30 | { |
31 | sigjmp_buf sj; |
32 | struct support_next_to_fault sigset_t_buf |
33 | = support_next_to_fault_allocate (SIZEOF_SIGSET_T); |
34 | sigset_t *m_p = (sigset_t *) sigset_t_buf.buffer; |
35 | sigset_t m; |
36 | |
37 | sigemptyset (&m); |
38 | memcpy (m_p, &m, SIZEOF_SIGSET_T); |
39 | sigprocmask (SIG_SETMASK, set: m_p, NULL); |
40 | memcpy (&m, m_p, SIZEOF_SIGSET_T); |
41 | if (sigsetjmp (sj, 0) == 0) |
42 | { |
43 | sigaddset (&m, SIGUSR1); |
44 | memcpy (m_p, &m, SIZEOF_SIGSET_T); |
45 | sigprocmask (SIG_SETMASK, set: m_p, NULL); |
46 | memcpy (&m, m_p, SIZEOF_SIGSET_T); |
47 | siglongjmp (env: sj, val: 1); |
48 | return EXIT_FAILURE; |
49 | } |
50 | sigprocmask (SIG_SETMASK, NULL, oset: m_p); |
51 | memcpy (&m, m_p, SIZEOF_SIGSET_T); |
52 | return sigismember (&m, SIGUSR1) ? EXIT_SUCCESS : EXIT_FAILURE; |
53 | } |
54 | |
55 | #include <support/test-driver.c> |
56 | |