1 // run-pass
2 // Test that we correctly normalize the type of a struct field
3 // which has an associated type.
4 
5 
6 pub trait UnifyKey {
7     type Value;
8 
dummy(&self)9     fn dummy(&self) { }
10 }
11 
12 pub struct Node<K:UnifyKey>(K, K::Value);
13 
foo<K : UnifyKey<Value=Option<V>>,V : Clone>(node: &Node<K>) -> Option<V>14 fn foo<K : UnifyKey<Value=Option<V>>,V : Clone>(node: &Node<K>) -> Option<V> {
15     node.1.clone()
16 }
17 
18 impl UnifyKey for i32 {
19     type Value = Option<u32>;
20 }
21 
22 impl UnifyKey for u32 {
23     type Value = Option<i32>;
24 }
25 
main()26 pub fn main() {
27     let node: Node<i32> = Node(1, Some(22));
28     assert_eq!(foo(&node), Some(22));
29 
30     let node: Node<u32> = Node(1, Some(22));
31     assert_eq!(foo(&node), Some(22));
32 }
33