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1a4d82fc | 1 | // Copyright 2015 The Rust Project Developers. See the COPYRIGHT |
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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 | ||
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11 | enum Stack<T> { |
12 | Nil, | |
13 | Cons(T, Box<Stack<T>>) | |
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14 | } |
15 | ||
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16 | fn is_empty<T>(s: Stack<T>) -> bool { |
17 | match s { | |
18 | Nil => true, | |
19 | //~^ WARN pattern binding `Nil` is named the same as one of the variants of the type `Stack` | |
20 | //~| HELP consider making the path in the pattern qualified: `Stack::Nil` | |
54a0048b | 21 | //~| HELP run `rustc --explain E0170` to see a detailed explanation |
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22 | _ => false |
23 | //~^ ERROR unreachable pattern | |
54a0048b | 24 | //~| HELP run `rustc --explain E0001` to see a detailed explanation |
9cc50fc6 | 25 | } |
62682a34 | 26 | } |
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27 | |
28 | fn main() {} |