rust/src/test/run-pass/kindck-owned-trait-contains-1.rs

trait repeat<A> { fn get() -> A; }

impl<A:copy> @A: repeat<A> {
    fn get() -> A { *self }
}

fn repeater<A:copy>(v: @A) -> repeat<A> {
    // Note: owned kind is not necessary as A appears in the trait type
    v as repeat::<A> // No
}

fn main() {
    let x = &3;
    let y = repeater(@x);
    assert *x == *(y.get());
}