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

/* This testcase is part of GDB, the GNU debugger.

   Copyright 2017-2022 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <stdlib.h>
#include <unistd.h>

/* GDB reads this to figure out the child's PID.  */
pid_t child_pid;

void
marker (void)
{
}

int
main ()
{
  alarm (60);

  child_pid = fork ();
  if (child_pid == -1)
    return 1;

  while (1)
    {
      marker ();
      usleep (1000);
    }

  return 0;
}