1 files changed, 12 insertions, 0 deletions
diff --git a/tests/ui/box/unit/unique-assign-copy.rs b/tests/ui/box/unit/unique-assign-copy.rs
new file mode 100644
index 000000000..b742973ce
--- /dev/null
+++ b/tests/ui/box/unit/unique-assign-copy.rs
@@ -0,0 +1,12 @@
+// run-pass
+
+pub fn main() {
+    let mut i: Box<_> = Box::new(1);
+    // Should be a copy
+    let mut j;
+    j = i.clone();
+    *i = 2;
+    *j = 3;
+    assert_eq!(*i, 2);
+    assert_eq!(*j, 3);
+}