text: /* This testcase is part of GDB, the GNU debugger.
  
     Copyright 2019-2020 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 <stdio.h>
  #include <pthread.h>
  #include <unistd.h>
  
  /* A place to record the thread.  */
  pthread_t the_thread;
  
  /* The worker thread just spins forever.  */
  void*
  thread_worker (void *payload)
  {
    while (1)
      {
        sleep (1);
      }
  
    return NULL;
  }
  
  /* Create a worker thread.  */
  int
  spawn_thread ()
  {
    if (pthread_create (&the_thread, NULL, thread_worker, NULL))
      {
        fprintf (stderr, "Unable to create thread.\n");
        return 0;
      }
    return 1;
  }
  
  /* A place for GDB to place a breakpoint.   */
  void __attribute__((used))
  breakpt ()
  {
    /* Nothing.  */
  }
  
  /* Create a worker thread that just spins forever, then enter a loop
     periodically calling the BREAKPT function.  */
  int
  main()
  {
    /* Ensure we stop if GDB crashes and DejaGNU fails to kill us.  */
    alarm (10);
  
    spawn_thread ();
  
    while (1)
      {
        sleep (1);
  
        breakpt ();
      }
  
    return 0;
  }
  