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// Test that encountering closures during coherence does not cause issues.
#![feature(type_alias_impl_trait, coroutines)]
#![cfg_attr(specialized, feature(specialization))]
#![allow(incomplete_features)]
//@ revisions: stock specialized
//@ [specialized]check-pass
type OpaqueCoroutine = impl Sized;
fn defining_use() -> OpaqueCoroutine {
#[coroutine]
|| {
for i in 0..10 {
yield i;
}
}
}
struct Wrapper<T>(T);
trait Trait {}
impl Trait for Wrapper<OpaqueCoroutine> {}
impl<T: Sync> Trait for Wrapper<T> {}
//[stock]~^ ERROR conflicting implementations of trait `Trait` for type `Wrapper<OpaqueCoroutine>`
fn main() {}
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