anchor.diff:      Expect.equals(2.0, 10 / 5);
       Expect.equals(2, a % b);
       Expect.equals(2, a.remainder(b));
  +    // Smi corner cases.
  +    for (int i = 0; i < 80; i++) {
  +      a = -(1 << i);
  +      b = -1;
  +      Expect.equals(1 << i, a ~/ b);
  +    }
       a = 22;
       b = 4.0;
       // Smi & double.
  
positive.code:     }
    }
  
    static testMain() {
      var a = 22;
      var b = 4;
      // Smi & smi.
  
negative.code:     Expect.equals(false, (3).hashCode() == (1).hashCode());
      Expect.equals(true, (10).hashCode() == (10).hashCode());
    }
  
    static testMain() {
      for (int i = 0; i < 1500; i++) {
        runOne();
      }
    }
  }
  
  main() {
  