File: issue-85455.rs

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#![feature(unboxed_closures)]

trait SomeTrait<'a> {
    type Associated;
}

fn give_me_ice<T>() {
    callee::<fn(&()) -> <T as SomeTrait<'_>>::Associated>();
    //~^ ERROR the trait bound `for<'a> T: SomeTrait<'a>` is not satisfied [E0277]
    //~| ERROR the trait bound `for<'a> T: SomeTrait<'a>` is not satisfied [E0277]
}

fn callee<T: Fn<(&'static (),)>>() {
    println!("{}", std::any::type_name::<<T as FnOnce<(&'static (),)>>::Output>());
}

fn main() {
    give_me_ice::<()>();
}