| // Copyright 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. |
| |
| // pretty-expanded FIXME #23616 |
| |
| #![allow(unknown_features)] |
| #![feature(box_syntax)] |
| |
| struct Element; |
| |
| macro_rules! foo { |
| ($tag: expr, $string: expr) => { |
| if $tag == $string { |
| let element: Box<_> = box Element; |
| unsafe { |
| return std::mem::transmute::<_, usize>(element); |
| } |
| } |
| } |
| } |
| |
| fn bar() -> usize { |
| foo!("a", "b"); |
| 0 |
| } |
| |
| fn main() { |
| bar(); |
| } |
