gdb/testsuite/gdb.base/step-over-vfork.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2011-2019 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 static void
  21 marker () {}
  22
  23 int
  24 main (void)
  25 {
  26   int pid;
  27
  28   pid = vfork ();
  29   if (pid == -1)
  30     {
  31       return 1;
  32     }
  33   else if (pid != 0)
  34     {
  35     }
  36   else
  37     {
  38       _exit (0);
  39     }
  40
  41   pid = vfork ();
  42   if (pid == -1)
  43     {
  44       return 1;
  45     }
  46   else if (pid != 0)
  47     {
  48     }
  49   else
  50     {
  51       _exit (0);
  52     }
  53
  54   pid = vfork ();
  55   if (pid == -1)
  56     {
  57       return 1;
  58     }
  59   else if (pid != 0)
  60     {
  61     }
  62   else
  63     {
  64       _exit (0);
  65     }
  66
  67   marker ();
  68   return 0;
  69
  70 }