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// check-pass
#![feature(specialization)]
#![feature(return_position_impl_trait_in_trait, lint_reasons)]
#![allow(incomplete_features)]
pub trait Foo {
fn bar(&self) -> impl Sized;
}
impl<U> Foo for U
where
U: Copy,
{
#[expect(refining_impl_trait)]
fn bar(&self) -> U {
*self
}
}
impl Foo for i32 {}
fn main() {
let _: i32 = 1i32.bar();
}
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