1  /* { dg-do run } */
       2  
       3  int a, b;
       4  unsigned char c, d, e;
       5  
       6  int main ()
       7  { 
       8    if (b || !a)
       9      { 
      10        c = a;
      11        if (!c && !a)
      12  	d = 0;
      13        e = -a;
      14      }
      15    return 0;
      16  }