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27 lines
540 B
Rust
27 lines
540 B
Rust
//@ check-pass
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//@ compile-flags: -Znormalize-docs
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// Regression test for <https://github.com/rust-lang/rust/issues/79459>.
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pub trait Query {}
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pub trait AsQuery {
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type Query;
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}
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impl<T: Query> AsQuery for T {
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type Query = T;
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}
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pub trait SelectDsl<Selection> {
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type Output;
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}
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impl<T, Selection> SelectDsl<Selection> for T
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where
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T: AsQuery,
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T::Query: SelectDsl<Selection>,
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{
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type Output = <T::Query as SelectDsl<Selection>>::Output;
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}
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pub type Select<Source, Selection> = <Source as SelectDsl<Selection>>::Output;
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