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1 | // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
223e47cc | 11 | |
c34b1796 AL |
12 | #[derive(Copy, Clone)] |
13 | enum Q { R(Option<usize>) } | |
14 | ||
15 | fn xyzzy(q: Q) -> usize { | |
223e47cc | 16 | match q { |
1a4d82fc | 17 | Q::R(S) if S.is_some() => { 0 } |
223e47cc LB |
18 | _ => 1 |
19 | } | |
20 | } | |
21 | ||
22 | ||
23 | pub fn main() { | |
1a4d82fc | 24 | assert_eq!(xyzzy(Q::R(Some(5))), 0); |
223e47cc | 25 | } |