| #![feature(exhaustive_patterns)] |
| #![feature(never_patterns)] |
| #![allow(incomplete_features)] |
| #![allow(dead_code, unreachable_code)] |
| #![deny(unreachable_patterns)] |
| |
| #[derive(Copy, Clone)] |
| enum Void {} |
| |
| fn main() { |
| let res_void: Result<bool, Void> = Ok(true); |
| |
| match res_void { |
| Ok(_x) => {} |
| Err(!), |
| //~^ ERROR unreachable |
| } |
| let (Ok(_x) | Err(!)) = res_void; |
| //~^ ERROR unreachable |
| if let Err(!) = res_void {} |
| //~^ ERROR unreachable |
| if let (Ok(true) | Err(!)) = res_void {} |
| //~^ ERROR unreachable |
| for (Ok(mut _x) | Err(!)) in [res_void] {} |
| //~^ ERROR unreachable |
| } |
| |
| fn foo((Ok(_x) | Err(!)): Result<bool, Void>) {} |
| //~^ ERROR unreachable |
