24 lines
601 B
Rust
24 lines
601 B
Rust
// edition:2018
|
|
// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty
|
|
// revisions: current next
|
|
|
|
#![feature(async_fn_in_trait)]
|
|
#![feature(min_specialization)]
|
|
|
|
struct MyStruct;
|
|
|
|
trait MyTrait<T> {
|
|
async fn foo(_: T) -> &'static str;
|
|
}
|
|
|
|
impl<T> MyTrait<T> for MyStruct {}
|
|
//~^ ERROR: not all trait items implemented, missing: `foo` [E0046]
|
|
|
|
impl MyTrait<i32> for MyStruct {
|
|
async fn foo(_: i32) -> &'static str {}
|
|
//~^ ERROR: `foo` specializes an item from a parent `impl`, but that item is not marked `default` [E0520]
|
|
//~| ERROR: mismatched types [E0308]
|
|
}
|
|
|
|
fn main() {}
|