1/* This testcase is part of GDB, the GNU debugger.
2
3   Copyright 1997-2020 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 <stdio.h>
19#include <unistd.h>
20
21#include <limits.h>
22#include <string.h>
23
24int
25main (int argc, char ** argv)
26{
27  int  pid;
28
29  /* A statement before vfork to make sure a breakpoint on main isn't
30     set on vfork below.  */
31  pid = 1 + argc;
32  pid = vfork (); /* VFORK */
33  if (pid == 0) {
34    char prog[PATH_MAX];
35    int len;
36
37    strcpy (prog, argv[0]);
38    len = strlen (prog);
39    /* Replace "foll-vfork" with "vforked-prog".  */
40    memcpy (prog + len - 10, "vforked-prog", 12);
41    prog[len + 2] = 0;
42
43    printf ("I'm the child!\n");
44    execlp (prog, prog, (char *) 0);
45    perror ("exec failed");
46    _exit (1);
47  }
48  else {
49    printf ("I'm the proud parent of child #%d!\n", pid);
50  }
51}
52