File: self-referential-3.rs

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#![feature(type_alias_impl_trait)]

type Bar<'a, 'b> = impl PartialEq<Bar<'a, 'b>> + std::fmt::Debug;

#[define_opaque(Bar)]
fn bar<'a, 'b>(i: &'a i32) -> Bar<'a, 'b> {
    //~^ ERROR can't compare `&i32` with `Bar<'a, 'b>`
    i
}

fn main() {
    let meh = 42;
    let muh = 42;
    assert_eq!(bar(&meh), bar(&muh));
}