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// check-fail
// known-bug
// edition: 2021
// We really should accept this, but we need implied bounds between the regions
// in a generator interior.
pub trait FutureIterator {
type Future<'s, 'cx>: Send
where
's: 'cx;
}
fn call<I: FutureIterator>() -> impl Send {
async { // a generator checked for autotrait impl `Send`
//~^ lifetime bound not satisfied
let x = None::<I::Future<'_, '_>>; // a type referencing GAT
async {}.await; // a yield point
}
}
fn call2<'a, 'b, I: FutureIterator>() -> impl Send {
async { // a generator checked for autotrait impl `Send`
//~^ lifetime bound not satisfied
let x = None::<I::Future<'a, 'b>>; // a type referencing GAT
//~^ lifetime may not live long enough
async {}.await; // a yield point
}
}
fn call3<'a: 'b, 'b, I: FutureIterator>() -> impl Send {
async { // a generator checked for autotrait impl `Send`
//~^ lifetime bound not satisfied
let x = None::<I::Future<'a, 'b>>; // a type referencing GAT
async {}.await; // a yield point
}
}
fn main() {}
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