35 lines
763 B
Rust
35 lines
763 B
Rust
|
// Repro for <https://github.com/rust-lang/rust/issues/102211#issuecomment-2891975128>.
|
||
|
|
//@ edition: 2021
|
||
|
|
//@ revisions: assumptions no_assumptions
|
||
|
|
//@[assumptions] compile-flags: -Zhigher-ranked-assumptions
|
||
|
|
//@[assumptions] check-pass
|
||
|
|
//@[no_assumptions] known-bug: #110338
|
||
|
|
|
||
|
|
use std::future::Future;
|
||
|
|
|
||
|
|
trait BoringTrait {}
|
||
|
|
|
||
|
|
trait TraitWithAssocType<I> {
|
||
|
|
type Assoc;
|
||
|
|
}
|
||
|
|
|
||
|
|
impl<T> TraitWithAssocType<()> for T
|
||
|
|
where
|
||
|
|
T: ?Sized + 'static,
|
||
|
|
{
|
||
|
|
type Assoc = ();
|
||
|
|
}
|
||
|
|
|
||
|
|
fn evil_function<T: TraitWithAssocType<I> + ?Sized, I>()
|
||
|
|
-> impl Future<Output = Result<(), T::Assoc>> {
|
||
|
|
async { Ok(()) }
|
||
|
|
}
|
||
|
|
|
||
|
|
fn fails_to_compile() -> impl std::future::Future<Output = ()> + Send {
|
||
|
|
async {
|
||
|
|
let _ = evil_function::<dyn BoringTrait, _>().await;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {}
|