1/* This testcase is part of GDB, the GNU debugger.
2
3   Copyright 2018-2020 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 <unistd.h>
19#include <stdlib.h>
20
21static void
22breakpt ()
23{
24  asm ("" ::: "memory");
25}
26
27static void
28go_child ()
29{
30  breakpt ();
31
32  while (1)
33    sleep (1);
34}
35
36static void
37go_parent ()
38{
39  breakpt ();
40
41  while (1)
42    sleep (1);
43}
44
45int
46main ()
47{
48  pid_t pid;
49
50  pid = fork ();
51  if (pid == -1)
52    abort ();
53
54  if (pid == 0)
55    go_child ();
56  else
57    go_parent ();
58
59  exit (EXIT_SUCCESS);
60}
61