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#![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
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