#include <pthread.h>
int
main ()
{
	pthread_t th; 
	pthread_join(th, 0);
	pthread_attr_init(0); 
	pthread_cleanup_push(0, 0);
        pthread_create(0,0,0,0); 
	pthread_cleanup_pop(0);

	pthread_mutex_t mtx;
	pthread_mutex_lock(0);
	pthread_cond_signal(0);
	pthread_cond_wait(0,0);
	pthread_mutex_unlock(0);

  return 0;
}
