| // 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. |
| |
| // run-pass |
| #![allow(stable_features)] |
| |
| #![allow(unreachable_code)] |
| |
| macro_rules! x { |
| ($a:lifetime) => { |
| $a: loop { |
| break $a; |
| panic!("failed"); |
| } |
| } |
| } |
| macro_rules! br { |
| ($a:lifetime) => { |
| break $a; |
| } |
| } |
| macro_rules! br2 { |
| ($b:lifetime) => { |
| 'b: loop { |
| break $b; // this $b should refer to the outer loop. |
| } |
| } |
| } |
| fn main() { |
| x!('a); |
| 'c: loop { |
| br!('c); |
| panic!("failed"); |
| } |
| 'b: loop { |
| br2!('b); |
| panic!("failed"); |
| } |
| } |