1 files changed, 10 insertions, 0 deletions
diff --git a/tests/ui/swap-1.rs b/tests/ui/swap-1.rs
new file mode 100644
index 000000000..d87114748
--- /dev/null
+++ b/tests/ui/swap-1.rs
@@ -0,0 +1,10 @@
+// run-pass
+
+use std::mem::swap;
+
+pub fn main() {
+    let mut x = 3; let mut y = 7;
+    swap(&mut x, &mut y);
+    assert_eq!(x, 7);
+    assert_eq!(y, 3);
+}