File: issue-68645-codegen-fulfillment.rs

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// Regression test for #68645

trait Fun {
    type F<'a>: Fn() -> u32;

    fn callme<'a>(f: Self::F<'a>) -> u32 {
        f()
    }
}

impl<T> Fun for T {
    type F<'a> = Self;
    //~^ ERROR expected a `Fn<()>` closure, found `T`
}

fn main() {
    <&dyn Iterator<Item = u8>>::callme(&std::iter::once(1));
}