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//@ run-pass
// Ensure that provided items are inherited properly even when impls vary in
// type parameters *and* rely on projections, and the type parameters are input
// types on the trait.
#![feature(specialization)] //~ WARN the feature `specialization` is incomplete
trait Trait<T> {
fn convert(&self) -> T;
}
trait WithAssoc {
type Item;
fn as_item(&self) -> &Self::Item;
}
impl<T, U> Trait<U> for T where T: WithAssoc<Item=U>, U: Clone {
fn convert(&self) -> U {
self.as_item().clone()
}
}
impl WithAssoc for u8 {
type Item = u8;
fn as_item(&self) -> &u8 { self }
}
impl Trait<u8> for u8 {}
fn main() {
assert!(3u8.convert() == 3u8);
}
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