[rustc.git] / src / test / ui / issues / issue-29861.rs

pub trait MakeRef<'a> {
    type Ref;
}
impl<'a, T: 'a> MakeRef<'a> for T {
    type Ref = &'a T;
}

pub trait MakeRef2 {
    type Ref2;
}
impl<'a, T: 'a> MakeRef2 for T {
//~^ ERROR the lifetime parameter `'a` is not constrained
    type Ref2 = <T as MakeRef<'a>>::Ref;
}

fn foo() -> <String as MakeRef2>::Ref2 { &String::from("foo") }

fn main() {
    println!("{}", foo());
}
Commit	Line	Data
92a42be0 SL	1	pub trait MakeRef<'a> {
	2	type Ref;
	3	}
	4	impl<'a, T: 'a> MakeRef<'a> for T {
	5	type Ref = &'a T;
	6	}
223e47cc	7
92a42be0 SL	8	pub trait MakeRef2 {
	9	type Ref2;
	10	}
	11	impl<'a, T: 'a> MakeRef2 for T {
	12	//~^ ERROR the lifetime parameter `'a` is not constrained
	13	type Ref2 = <T as MakeRef<'a>>::Ref;
	14	}
	15
	16	fn foo() -> <String as MakeRef2>::Ref2 { &String::from("foo") }
	17
	18	fn main() {
	19	println!("{}", foo());
	20	}