os-rust/tests/ui/object-safety/object-safety-sized.rs

// Check that we correctly prevent users from making trait objects
// from traits where `Self : Sized`.
//
// revisions: curr object_safe_for_dispatch

#![cfg_attr(object_safe_for_dispatch, feature(object_safe_for_dispatch))]

trait Bar: Sized {
    fn bar<T>(&self, t: T);
}

fn make_bar<T: Bar>(t: &T) -> &dyn Bar {
    //[curr]~^ ERROR E0038
    t
    //~^ ERROR E0038
}

fn main() {}