rust/tests/ui/regions/region-object-lifetime-4.rs

// Various tests related to testing how region inference works
// with respect to the object receivers.

trait Foo {
    fn borrowed<'a>(&'a self) -> &'a ();
}

// Here we have two distinct lifetimes, but we try to return a pointer
// with the longer lifetime when (from the signature) we only know
// that it lives as long as the shorter lifetime. Therefore, error.
fn borrowed_receiver_related_lifetimes2<'a,'b>(x: &'a (dyn Foo + 'b)) -> &'b () {
    x.borrowed()
    //~^ ERROR lifetime may not live long enough
}

fn main() {}