1/* Test case for forgotten hw-watchpoints after fork()-off of a process.
2
3   Copyright 2012-2020 Free Software Foundation, Inc.
4
5   This file is part of GDB.
6
7   This program is free software; you can redistribute it and/or modify
8   it under the terms of the GNU General Public License as published by
9   the Free Software Foundation; either version 3 of the License, or
10   (at your option) any later version.
11
12   This program is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   GNU General Public License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
19
20#include <string.h>
21#include <errno.h>
22#include <sys/types.h>
23#include <unistd.h>
24#include <assert.h>
25#include <stdio.h>
26#include <sys/wait.h>
27
28#include "watchpoint-fork.h"
29
30void
31forkoff (int nr)
32{
33  pid_t child, pid_got;
34  int exit_code = 42 + nr;
35  int status, i;
36
37  child = fork ();
38  switch (child)
39    {
40    case -1:
41      assert (0);
42    case 0:
43#if DEBUG
44      printf ("child%d: %d\n", nr, (int) getpid ());
45      /* Delay to get both the "child%d" and "parent%d" message printed without
46	 a race breaking expect by its endless wait on `$gdb_prompt$':
47	 Breakpoint 3, marker () at ../../../gdb/testsuite/gdb.threads/watchpoint-fork.c:33
48	 33      }
49	 (gdb) parent2: 14223  */
50      i = sleep (1);
51      assert (i == 0);
52#endif
53
54      /* We must not get caught here (against a forgotten breakpoint).  */
55      var++;
56      marker ();
57
58      _exit (exit_code);
59    default:
60#if DEBUG
61      printf ("parent%d: %d\n", nr, (int) child);
62      /* Delay to get both the "child%d" and "parent%d" message printed, see
63	 above.  */
64      i = sleep (1);
65      assert (i == 0);
66#endif
67
68      pid_got = wait (&status);
69      assert (pid_got == child);
70      assert (WIFEXITED (status));
71      assert (WEXITSTATUS (status) == exit_code);
72
73      /* We must get caught here (against a false watchpoint removal).  */
74      marker ();
75    }
76}
77