src/test/ui/consts/stable-precise-live-drops-in-libcore.rs

   1 #![stable(feature = "core", since = "1.6.0")]
   2 #![feature(staged_api)]
   3 #![feature(const_precise_live_drops)]
   4
   5 enum Either<T, S> {
   6     Left(T),
   7     Right(S),
   8 }
   9
  10 impl<T> Either<T, T> {
  11     #[stable(feature = "rust1", since = "1.0.0")]
  12     #[rustc_const_stable(feature = "foo", since = "1.0.0")]
  13     pub const fn unwrap(self) -> T {
  14         //~^ ERROR destructors cannot be evaluated at compile-time
  15         match self {
  16             Self::Left(t) => t,
  17             Self::Right(t) => t,
  18         }
  19     }
  20 }
  21
  22 fn main() {}