xref: /netbsd-src/external/gpl3/gdb.old/dist/gdb/testsuite/gdb.base/attach-twice.c (revision 200d779b75dbeafa7bc01fd0f60bc61185f6967b)
1 /* This testcase is part of GDB, the GNU debugger.
2 
3    Copyright 2011-2014 Free Software Foundation, Inc.
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 <stdlib.h>
19 #include <unistd.h>
20 #include <sys/ptrace.h>
21 #include <errno.h>
22 
23 int
24 main (void)
25 {
26   long l;
27 
28   switch (fork ())
29   {
30     case -1:
31       perror ("fork");
32       exit (1);
33     case 0:
34       errno = 0;
35       ptrace (PTRACE_ATTACH, getppid (), NULL, NULL);
36       if (errno != 0)
37 	perror ("PTRACE_ATTACH");
38       break;
39   }
40   sleep (600);
41   return 0;
42 }
43