| // Copyright 2014 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. |
| |
| #![allow(non_snake_case)] |
| |
| #[derive(Copy, Clone)] |
| enum Q { R(Option<usize>) } |
| |
| fn xyzzy(q: Q) -> usize { |
| match q { |
| Q::R(S) if S.is_some() => { 0 } |
| _ => 1 |
| } |
| } |
| |
| |
| pub fn main() { |
| assert_eq!(xyzzy(Q::R(Some(5))), 0); |
| } |