rust/tests/ui/impl-trait/issue-55872-2.rs

21 lines
500 B
Rust

//@ edition:2018
#![feature(impl_trait_in_assoc_type)]
pub trait Bar {
type E: Send;
fn foo<T>() -> Self::E;
}
impl<S> Bar for S {
type E = impl std::marker::Send;
fn foo<T>() -> Self::E {
async {}
//~^ ERROR type parameter `T` is part of concrete type but not used in parameter list for the `impl Trait` type alias
//~| ERROR type parameter `T` is part of concrete type but not used in parameter list for the `impl Trait` type alias
}
}
fn main() {}