2 #![feature(min_type_alias_impl_trait)]
4 type X<A: ToString + Clone, B: ToString + Clone> = impl ToString;
6 fn f<A: ToString + Clone, B: ToString + Clone>(a: A, b: B) -> (X<A, B>, X<A, B>) {
11 println!("{}", <X<_, _> as ToString>::to_string(&f(42_i32, String::new()).1));