| // run-pass | |
| // pretty-expanded FIXME #23616 | |
| #![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(); | |
| } |