gdb/testsuite/gdb.base/watch-vfork.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2009-2019 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
  20 int *global;
  21
  22 int
  23 main (void)
  24 {
  25   int pid;
  26
  27   pid = vfork ();
  28   if (pid == -1)
  29     {
  30       return 1;
  31     }
  32   else if (pid != 0)
  33     {
  34       global = &pid;
  35     }
  36   else
  37     {
  38       _exit (0);
  39     }
  40   return 0;
  41 }