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30852783 UW |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
b811d2c2 | 3 | Copyright 2011-2020 Free Software Foundation, Inc. |
30852783 UW |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 3 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program 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 | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | #include <signal.h> | |
19 | #include <stdlib.h> | |
20 | #include <string.h> | |
21 | #include <unistd.h> | |
22 | ||
23 | volatile char *p = NULL; | |
24 | ||
25 | extern long | |
26 | bowler (void) | |
27 | { | |
28 | return *p; | |
29 | } | |
30 | ||
31 | extern void | |
32 | keeper (int sig) | |
33 | { | |
34 | static int recurse = 0; | |
35 | if (++recurse < 3) | |
36 | bowler (); | |
37 | ||
38 | _exit (0); | |
39 | } | |
40 | ||
41 | int | |
42 | main (void) | |
43 | { | |
44 | struct sigaction act; | |
45 | memset (&act, 0, sizeof act); | |
46 | act.sa_handler = keeper; | |
47 | act.sa_flags = SA_NODEFER; | |
48 | sigaction (SIGSEGV, &act, NULL); | |
49 | sigaction (SIGBUS, &act, NULL); | |
50 | ||
51 | bowler (); | |
52 | return 0; | |
53 | } |