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