1  /* { dg-do compile } */
       2  
       3  int a, b, c, d, e;
       4  int f() {
       5    c = 0;
       6    for (; c >= 0; c--) {
       7      d = 0;
       8      for (; d <= 0; d++) {
       9        e = 0;
      10        for (; d + c + e >= 0; e--)
      11          ;
      12        a = 1;
      13        b = 0;
      14        for (; a; ++b)
      15          a *= 2;
      16        for (; b + d >= 0;)
      17          return 0;
      18      }
      19    }
      20  }