[rustc.git] / src / test / ui / traits / check-trait-object-bounds-6.rs

// Check that we validate associated type bounds on super traits for trait
// objects

trait Is {
    type T;
}

impl<U> Is for U {
    type T = U;
}

trait Obj {
    type U: Is<T = Self::V>;
    type V;
}

fn is_obj<T: ?Sized + Obj>(_: &T) {}

fn f(x: &dyn Obj<U = i32, V = i64>) {
    is_obj(x)
    //~^ ERROR type mismatch resolving `<i32 as Is>::T == i64`
}

fn main() {}
Commit	Line	Data
29967ef6 XL	1	// Check that we validate associated type bounds on super traits for trait
	2	// objects
	3
	4	trait Is {
	5	type T;
	6	}
	7
	8	impl<U> Is for U {
	9	type T = U;
	10	}
	11
	12	trait Obj {
	13	type U: Is<T = Self::V>;
	14	type V;
	15	}
	16
	17	fn is_obj<T: ?Sized + Obj>(_: &T) {}
	18
	19	fn f(x: &dyn Obj<U = i32, V = i64>) {
	20	is_obj(x)
	21	//~^ ERROR type mismatch resolving `<i32 as Is>::T == i64`
	22	}
	23
	24	fn main() {}