1 files changed, 45 insertions, 0 deletions
diff --git a/tests/ui/stdlib-unit-tests/builtin-clone.rs b/tests/ui/stdlib-unit-tests/builtin-clone.rs
new file mode 100644
index 000000000..0874d5bc3
--- /dev/null
+++ b/tests/ui/stdlib-unit-tests/builtin-clone.rs
@@ -0,0 +1,45 @@
+// run-pass
+// Test that `Clone` is correctly implemented for builtin types.
+// Also test that cloning an array or a tuple is done right, i.e.
+// each component is cloned.
+
+fn test_clone<T: Clone>(arg: T) {
+    let _ = arg.clone();
+}
+
+fn foo() { }
+
+#[derive(Debug, PartialEq, Eq)]
+struct S(i32);
+
+impl Clone for S {
+    fn clone(&self) -> Self {
+        S(self.0 + 1)
+    }
+}
+
+fn main() {
+    test_clone(foo);
+    test_clone([1; 56]);
+    test_clone((1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1));
+
+    let a = [S(0), S(1), S(2)];
+    let b = [S(1), S(2), S(3)];
+    assert_eq!(b, a.clone());
+
+    let a = (
+        (S(1), S(0)),
+        (
+            (S(0), S(0), S(1)),
+            S(0)
+        )
+    );
+    let b = (
+        (S(2), S(1)),
+        (
+            (S(1), S(1), S(2)),
+            S(1)
+        )
+    );
+    assert_eq!(b, a.clone());
+}