gdb/testsuite/gdb.base/attach-non-pgrp-leader.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2017-2019 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 <stdlib.h>
  19 #include <unistd.h>
  20
  21 /* GDB reads this to figure out the child's PID.  */
  22 pid_t child_pid;
  23
  24 void
  25 marker (void)
  26 {
  27 }
  28
  29 int
  30 main ()
  31 {
  32   alarm (60);
  33
  34   child_pid = fork ();
  35   if (child_pid == -1)
  36     return 1;
  37
  38   while (1)
  39     {
  40       marker ();
  41       usleep (1000);
  42     }
  43
  44   return 0;
  45 }