1 files changed, 32 insertions, 0 deletions
diff --git a/tests/ui/associated-types/associated-types-struct-field-numbered.rs b/tests/ui/associated-types/associated-types-struct-field-numbered.rs
new file mode 100644
index 000000000..8612911d8
--- /dev/null
+++ b/tests/ui/associated-types/associated-types-struct-field-numbered.rs
@@ -0,0 +1,32 @@
+// 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>(#[allow(unused_tuple_struct_fields)] K, K::Value);
+
+fn foo<K : UnifyKey<Value=Option<V>>,V : Clone>(node: &Node<K>) -> Option<V> {
+    node.1.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(1, Some(22));
+    assert_eq!(foo(&node), Some(22));
+
+    let node: Node<u32> = Node(1, Some(22));
+    assert_eq!(foo(&node), Some(22));
+}