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// [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();
}
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