1  /* { dg-do run } */
       2  /* { dg-options "-Oz" } */
       3  
       4  unsigned long long x;
       5  
       6  int main (void)
       7  {
       8    __builtin_memset (&x, 0xff, 4);
       9    if (x != 0xffffffff)
      10      __builtin_abort ();
      11    return 0;
      12  }