1 // run-pass
2 macro_rules! foo {
3     ($l:lifetime) => {
4         fn f(arg: &$l str) -> &$l str {
5             arg
6         }
7     }
8 }
9 
main()10 pub fn main() {
11     foo!('static);
12     let x: &'static str = f("hi");
13     assert_eq!("hi", x);
14 }
15