1 // Tests that we generate nice error messages
2 // when an expression is unreachble due to control
3 // flow inside of a macro expansion.
4 #![deny(unreachable_code)]
5 
6 macro_rules! early_return {
7     () => {
8         return ()
9     }
10 }
11 
main()12 fn main() {
13     return early_return!();
14     //~^ ERROR unreachable expression
15 }
16