| fun box(): String { | |
| val a: Long = 2147483647 + 1 | |
| if (a != -2147483648L) return "fail: in this case we should add to ints and than cast the result to long - overflow expected" | |
| val l1 = Long.MAX_VALUE | |
| val l2 = l1 + 1 | |
| if (l2 > l1) return "fail: Long.MAX_VALUE + 1 should overflow to negative." | |
| val l3 = Long.MIN_VALUE | |
| val l4 = l3 - 1 | |
| if (l4 < l3) return "fail: Long.MIN_VALUE - 1 should overflow to positive." | |
| return "OK" | |
| } |