gdb/testsuite/gdb.base/foll-vfork-exit.c

   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 int
  22 main ()
  23 {
  24   int pid;
  25
  26   /* A statement before vfork to make sure a breakpoint on main isn't
  27      set on vfork below.  */
  28   pid = 1;
  29   pid = vfork (); /* VFORK */
  30   if (pid == 0)
  31     {
  32       printf ("I'm the child!\n");
  33       _exit (0);
  34     }
  35   else
  36     {
  37       printf ("I'm the proud parent of child #%d!\n", pid);
  38     }
  39
  40   return 0;
  41 }