37 lines
743 B
Rust
37 lines
743 B
Rust
#![feature(return_position_impl_trait_in_trait, async_fn_in_trait)]
|
|
#![deny(refining_impl_trait)]
|
|
|
|
trait Foo {
|
|
fn bar() -> impl Sized;
|
|
}
|
|
|
|
struct A;
|
|
impl Foo for A {
|
|
fn bar() -> impl Copy {}
|
|
//~^ ERROR impl method signature does not match trait method signature
|
|
}
|
|
|
|
struct B;
|
|
impl Foo for B {
|
|
fn bar() {}
|
|
//~^ ERROR impl method signature does not match trait method signature
|
|
}
|
|
|
|
struct C;
|
|
impl Foo for C {
|
|
fn bar() -> () {}
|
|
//~^ ERROR impl method signature does not match trait method signature
|
|
}
|
|
|
|
trait Late {
|
|
fn bar<'a>(&'a self) -> impl Sized + 'a;
|
|
}
|
|
|
|
struct D;
|
|
impl Late for D {
|
|
fn bar(&self) -> impl Copy + '_ {}
|
|
//~^ ERROR impl method signature does not match trait method signature
|
|
}
|
|
|
|
fn main() {}
|