mirror of https://github.com/rust-lang/rust
29 lines
630 B
Rust
29 lines
630 B
Rust
//@ check-pass
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// Regression test for #112832.
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pub trait QueryDb {
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type Db;
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}
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pub struct QueryTable<Q, DB> {
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db: DB,
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storage: Q,
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}
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// We normalize `<Q as QueryDb>::Db` to `<Q as AsyncQueryFunction<'d>>::SendDb`
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// using the where-bound. 'd is an unconstrained region variable which previously
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// triggered an assert.
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impl<Q> QueryTable<Q, <Q as QueryDb>::Db> where Q: for<'d> AsyncQueryFunction<'d> {}
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pub trait AsyncQueryFunction<'d>: QueryDb<Db = <Self as AsyncQueryFunction<'d>>::SendDb> {
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type SendDb: 'd;
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}
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pub trait QueryStorageOpsAsync<Q>
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where
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Q: for<'d> AsyncQueryFunction<'d>,
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{
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}
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fn main() {}
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