1  /* { dg-do compile } */
       2  
       3  int
       4  foo (unsigned long int x, int y, int z)
       5  {
       6    int ret = 0;
       7  
       8    while (y < 1)
       9      {
      10        x *= 2;
      11        ret = x == z;
      12        z = y;
      13        ++y;
      14      }
      15  
      16    return ret;
      17  }