rust/tests/ui/rfcs/rfc-0000-never_patterns/ICE-133117-duplicate-never-arm.rs

#![feature(never_type)]
#![feature(never_patterns)]
#![allow(incomplete_features)]

enum Void {}

fn foo(x: Void) {
    match x {
        (!|!) if true => {} //~ ERROR a never pattern is always unreachable
        (!|!) if true => {} //~ ERROR a never pattern is always unreachable
    }
}

fn main() {}