File: never-result.rs

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rustc 1.87.0%2Bdfsg1-1
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//@ run-pass

#![allow(unused_variables)]
#![allow(unreachable_code)]
#![allow(unreachable_patterns)]
// Test that we can extract a ! through pattern matching then use it as several different types.
#![feature(never_type)]

fn main() {
    let x: Result<u32, !> = Ok(123);
    match x {
        Ok(z) => (),
        Err(y) => {
            let q: u32 = y;
            let w: i32 = y;
            let e: String = y;
            y
        }
    }
}