1 /* Test raising a signal.
2 Copyright (C) 2011-2018 Free Software Foundation, Inc.
3
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
16
17 #include <config.h>
18
19 #include <signal.h>
20
21 #include "signature.h"
22 SIGNATURE_CHECK (raise, int, (int));
23
24 #include <stdlib.h>
25
26 #include "macros.h"
27
28 /* It is safe to use _Noreturn here: exit() never returns, and GCC knows that
29 exit() is a non-returning function, even on platforms where its declaration
30 in <stdlib.h> does not have the 'noreturn' attribute. */
31 static _Noreturn void
handler(int sig)32 handler (int sig)
33 {
34 exit (0);
35 }
36
37 int
main(void)38 main (void)
39 {
40 /* Test behaviour for invalid argument. */
41 ASSERT (raise (-1) != 0);
42
43 /* Test behaviour for SIGINT. */
44 ASSERT (signal (SIGINT, handler) != SIG_ERR);
45
46 raise (SIGINT);
47
48 /* We should not get here, because the handler takes away the control. */
49 exit (1);
50 }
51