1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/regions/regions-infer-borrow-scope-addr-of.rs b/tests/ui/regions/regions-infer-borrow-scope-addr-of.rs
new file mode 100644
index 000000000..5d8ad932e
--- /dev/null
+++ b/tests/ui/regions/regions-infer-borrow-scope-addr-of.rs
@@ -0,0 +1,23 @@
+// run-pass
+
+use std::mem::swap;
+
+pub fn main() {
+    let mut x = 4;
+
+    for i in 0_usize..3 {
+        // ensure that the borrow in this alt
+        // does not interfere with the swap
+        // below.  note that it would it you
+        // naively borrowed &x for the lifetime
+        // of the variable x, as we once did
+        match i {
+            i => {
+                let y = &x;
+                assert!(i < *y);
+            }
+        }
+        let mut y = 4;
+        swap(&mut y, &mut x);
+    }
+}