1 files changed, 9 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/swap.rs b/src/tools/clippy/tests/ui/swap.rs
index a318c2791..a8c878479 100644
--- a/src/tools/clippy/tests/ui/swap.rs
+++ b/src/tools/clippy/tests/ui/swap.rs
@@ -179,3 +179,12 @@ fn issue_8154() {
     s.0.x = s.0.y;
     s.0.y = t;
 }
+
+const fn issue_9864(mut u: u32) -> u32 {
+    let mut v = 10;
+
+    let temp = u;
+    u = v;
+    v = temp;
+    u + v
+}