1 files changed, 24 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-5718.rs b/tests/ui/issues/issue-5718.rs
new file mode 100644
index 00000000000..f29a1e2a060
--- /dev/null
+++ b/tests/ui/issues/issue-5718.rs
@@ -0,0 +1,24 @@
+// run-pass
+// pretty-expanded FIXME #23616
+
+struct Element;
+
+macro_rules! foo {
+    ($tag: expr, $string: expr) => {
+        if $tag == $string {
+            let element: Box<_> = Box::new(Element);
+            unsafe {
+                return std::mem::transmute::<_, usize>(element);
+            }
+        }
+    }
+}
+
+fn bar() -> usize {
+    foo!("a", "b");
+    0
+}
+
+fn main() {
+    bar();
+}