1  // { dg-do compile }
       2  // { dg-options "-O2" }
       3  
       4  int a, b, c;
       5  void d() {
       6    unsigned short e;
       7    while (b)
       8      ;
       9    e = (e + 5) / a;
      10    switch (e)
      11    case 0:
      12    case 3:
      13      c = a;
      14  }