#include <pthread.h>
#include <assert.h>
#include <unistd.h>

static void *start (void *arg)
{
  sleep (100);
  return arg;
}

int main (void)
{
  pthread_t thread1;
  int i;

  i = pthread_create (&thread1, NULL, start, NULL);
  assert (i == 0);
  sleep (1);
*(volatile int *)0=0;
  i = pthread_join (thread1, NULL);
  assert (i == 0);

  return 0;
}