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1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
ecd75fc8 | 3 | Copyright 2012-2014 Free Software Foundation, Inc. |
bd9673a4 PW |
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 | #include <stdlib.h> | |
18 | #include <signal.h> | |
19 | #include <unistd.h> | |
20 | ||
21 | void | |
22 | do_nothing (void) | |
23 | { | |
24 | } | |
25 | ||
26 | void | |
27 | handle (int sig) | |
28 | { | |
29 | do_nothing (); /* handle marker */ | |
30 | } | |
31 | ||
32 | int | |
33 | main () | |
34 | { | |
35 | int i; | |
36 | signal (SIGHUP, handle); | |
37 | ||
38 | raise (SIGHUP); /* first HUP */ | |
39 | ||
40 | signal (SIGCHLD, handle); | |
41 | for (i = 0; i < 3; i++) /* fork loop */ | |
42 | { | |
43 | switch (fork()) | |
44 | { | |
45 | case -1: | |
46 | perror ("fork"); | |
47 | exit (1); | |
48 | case 0: | |
49 | exit (0); | |
50 | } | |
51 | wait (NULL); | |
52 | } | |
53 | ||
54 | raise (SIGHUP); /* second HUP */ | |
55 | ||
56 | raise (SIGHUP); /* third HUP */ | |
57 | } | |
58 |