[rustc.git] / tests / rustdoc-ui / normalize-cycle.rs

// check-pass
// compile-flags: -Znormalize-docs
// Regression test for <https://github.com/rust-lang/rust/issues/79459>.
pub trait Query {}

pub trait AsQuery {
    type Query;
}

impl<T: Query> AsQuery for T {
    type Query = T;
}

pub trait SelectDsl<Selection> {
    type Output;
}

impl<T, Selection> SelectDsl<Selection> for T
where
    T: AsQuery,
    T::Query: SelectDsl<Selection>,
{
    type Output = <T::Query as SelectDsl<Selection>>::Output;
}

pub type Select<Source, Selection> = <Source as SelectDsl<Selection>>::Output;
Commit	Line	Data
a2a8927a	1	// check-pass
2b03887a	2	// compile-flags: -Znormalize-docs
f2b60f7d	3	// Regression test for <https://github.com/rust-lang/rust/issues/79459>.
a2a8927a XL	4	pub trait Query {}
	5
	6	pub trait AsQuery {
	7	type Query;
	8	}
	9
	10	impl<T: Query> AsQuery for T {
	11	type Query = T;
	12	}
	13
	14	pub trait SelectDsl<Selection> {
	15	type Output;
	16	}
	17
	18	impl<T, Selection> SelectDsl<Selection> for T
	19	where
	20	T: AsQuery,
	21	T::Query: SelectDsl<Selection>,
	22	{
	23	type Output = <T::Query as SelectDsl<Selection>>::Output;
	24	}
	25
	26	pub type Select<Source, Selection> = <Source as SelectDsl<Selection>>::Output;