1 files changed, 19 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-25497.rs b/tests/ui/issues/issue-25497.rs
new file mode 100644
index 00000000000..25f5ab90f7f
--- /dev/null
+++ b/tests/ui/issues/issue-25497.rs
@@ -0,0 +1,19 @@
+// run-pass
+#[derive(Clone, Debug, PartialEq)]
+enum Expression {
+    Dummy,
+    Add(Box<Expression>),
+}
+
+use Expression::*;
+
+fn simplify(exp: Expression) -> Expression {
+    match exp {
+        Add(n) => *n.clone(),
+        _ => Dummy
+    }
+}
+
+fn main() {
+    assert_eq!(simplify(Add(Box::new(Dummy))), Dummy);
+}