// #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). fn main() { let x: Box<_> = Box::new(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) -> bool { false }