[rustc.git] / src / test / ui / type-alias-impl-trait / nested.rs

#![feature(type_alias_impl_trait)]

type Foo = impl std::fmt::Debug;
type Bar = impl Trait<Foo>;

trait Trait<T> {}

impl<T, U> Trait<T> for U {}

fn bar() -> Bar {
    42
}

fn main() {
    println!("{:?}", bar());
    //~^ ERROR `Bar` doesn't implement `Debug`
}
Commit	Line	Data
ee023bcb FG	1	#![feature(type_alias_impl_trait)]
	2
	3	type Foo = impl std::fmt::Debug;
	4	type Bar = impl Trait<Foo>;
	5
	6	trait Trait<T> {}
	7
	8	impl<T, U> Trait<T> for U {}
	9
	10	fn bar() -> Bar {
	11	42
	12	}
	13
	14	fn main() {
	15	println!("{:?}", bar());
	16	//~^ ERROR `Bar` doesn't implement `Debug`
	17	}