mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-23 07:14:28 +00:00
31 lines
671 B
Rust
31 lines
671 B
Rust
// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty
|
|
// revisions: current next
|
|
|
|
// FIXME(compiler-errors): I'm not exactly sure if this is expected to pass or not.
|
|
// But we fixed an ICE anyways.
|
|
|
|
#![feature(specialization)]
|
|
#![feature(return_position_impl_trait_in_trait)]
|
|
#![allow(incomplete_features)]
|
|
|
|
trait Foo {
|
|
fn bar(&self) -> impl Sized;
|
|
}
|
|
|
|
default impl<U> Foo for U
|
|
where
|
|
U: Copy,
|
|
{
|
|
fn bar(&self) -> U {
|
|
//~^ ERROR method `bar` has an incompatible type for trait
|
|
//~| ERROR method with return-position `impl Trait` in trait cannot be specialized
|
|
*self
|
|
}
|
|
}
|
|
|
|
impl Foo for i32 {}
|
|
|
|
fn main() {
|
|
1i32.bar();
|
|
}
|