mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-26 16:54:01 +00:00
30 lines
702 B
Rust
30 lines
702 B
Rust
#![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
|