diff options
Diffstat (limited to 'src/test/ui/associated-types/associated-types-struct-field-named.rs')
-rw-r--r-- | src/test/ui/associated-types/associated-types-struct-field-named.rs | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/test/ui/associated-types/associated-types-struct-field-named.rs b/src/test/ui/associated-types/associated-types-struct-field-named.rs new file mode 100644 index 000000000..c400bf943 --- /dev/null +++ b/src/test/ui/associated-types/associated-types-struct-field-named.rs @@ -0,0 +1,35 @@ +// 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)); +} |