# include <pthread.h>

static void *
dummy_thread_func (void *arg)
{ 
  return arg;
}

void
glthread_in_use (void)
{ 

  pthread_t thread;

  if (!pthread_create (&thread, NULL, dummy_thread_func, NULL) != 0)
    { 
      void *retval;
      if (pthread_join (thread, &retval) != 0)
        {
          abort ();
        }
    }
}
 
void
main ()
{ 
  glthread_in_use();
}