20 lines
649 B
Rust
20 lines
649 B
Rust
|
// Copyright 2012-2014 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.
|
||
|
|
|
||
|
|
#[feature(macro_rules)];
|
||
|
|
|
||
|
|
macro_rules! foo {
|
||
|
|
($e: expr) => { 'x: for _ in range(0,1) { $e } }
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn main() {
|
||
|
|
foo!(break 'x); //~ ERROR use of undeclared label `x`
|
||
|
|
}
|