rust/src/test/run-pass/const-nullary-enum.rs

// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

enum Foo {
    Bar,
    Baz,
    Boo,
}

const X: Foo = Bar;

fn main() {
    match X {
        Bar => {}
        Baz | Boo => fail
    }
}