| // #47295: We used to have a hack of special-casing adjacent amtch |
| // arms whose patterns were composed solely of constants to not have |
| // them linked in the cfg. |
| // |
| // THis was broken for various reasons. In particular, that hack was |
| // originally authored under the assunption that other checks |
| // elsewhere would ensure that the two patterns did not overlap. But |
| // that assumption did not hold, at least not in the long run (namely, |
| // overlapping patterns were turned into warnings rather than errors). |
| |
| #![feature(box_syntax)] |
| |
| fn main() { |
| let x: Box<_> = box 1; |
| |
| let v = (1, 2); |
| |
| match v { |
| (1, 2) if take(x) => (), |
| (1, 2) if take(x) => (), //~ ERROR use of moved value: `x` |
| _ => (), |
| } |
| } |
| |
| fn take<T>(_: T) -> bool { false } |
