| // Copyright 2015 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 Stack<T> { |
| Nil, |
| Cons(T, Box<Stack<T>>) |
| } |
| |
| fn is_empty<T>(s: Stack<T>) -> bool { |
| match s { |
| Nil => true, |
| //~^ WARN pattern binding `Nil` is named the same as one of the variants of the type `Stack` |
| //~| HELP consider making the path in the pattern qualified: `Stack::Nil` |
| _ => false |
| //~^ ERROR unreachable pattern |
| } |
| } |
| |
| fn main() {} |
