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//@ check-pass
use std::fmt::Display;
use std::ops::Deref;
pub trait Foo {
fn bar(self) -> impl Deref<Target = impl Display + ?Sized>;
}
pub struct A;
impl Foo for A {
#[expect(refining_impl_trait)]
fn bar(self) -> &'static str {
"Hello, world"
}
}
pub struct B;
impl Foo for B {
#[expect(refining_impl_trait)]
fn bar(self) -> Box<i32> {
Box::new(42)
}
}
fn main() {
println!("Message for you: {:?}", &*A.bar());
println!("Another for you: {:?}", &*B.bar());
}
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