1 files changed, 27 insertions, 0 deletions
diff --git a/tests/ui/newtype-polymorphic.rs b/tests/ui/newtype-polymorphic.rs
new file mode 100644
index 000000000..a6a725211
--- /dev/null
+++ b/tests/ui/newtype-polymorphic.rs
@@ -0,0 +1,27 @@
+// run-pass
+
+#![allow(non_camel_case_types)]
+
+
+#[derive(Clone)]
+struct myvec<X>(Vec<X> );
+
+fn myvec_deref<X:Clone>(mv: myvec<X>) -> Vec<X> {
+    let myvec(v) = mv;
+    return v.clone();
+}
+
+fn myvec_elt<X>(mv: myvec<X>) -> X {
+    let myvec(v) = mv;
+    return v.into_iter().next().unwrap();
+}
+
+pub fn main() {
+    let mv = myvec(vec![1, 2, 3]);
+    let mv_clone = mv.clone();
+    let mv_clone = myvec_deref(mv_clone);
+    assert_eq!(mv_clone[1], 2);
+    assert_eq!(myvec_elt(mv.clone()), 1);
+    let myvec(v) = mv;
+    assert_eq!(v[2], 3);
+}