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//@ run-pass
// Test that we correctly normalize the type of a struct field
// which has an associated type.
pub trait UnifyKey {
type Value;
fn dummy(&self) { }
}
pub struct Node<K:UnifyKey> {
pub key: K,
pub value: K::Value,
}
fn foo<K : UnifyKey<Value=Option<V>>,V : Clone>(node: &Node<K>) -> Option<V> {
node.value.clone()
}
impl UnifyKey for i32 {
type Value = Option<u32>;
}
impl UnifyKey for u32 {
type Value = Option<i32>;
}
pub fn main() {
let node: Node<i32> = Node { key: 1, value: Some(22) };
assert_eq!(foo(&node), Some(22));
let node: Node<u32> = Node { key: 1, value: Some(22) };
assert_eq!(foo(&node), Some(22));
}
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