1 files changed, 27 insertions, 0 deletions
diff --git a/tests/ui/union/union-macro.rs b/tests/ui/union/union-macro.rs
new file mode 100644
index 00000000000..7fd9d8221c6
--- /dev/null
+++ b/tests/ui/union/union-macro.rs
@@ -0,0 +1,27 @@
+// run-pass
+// revisions: mirunsafeck thirunsafeck
+// [thirunsafeck]compile-flags: -Z thir-unsafeck
+
+#![allow(unused_variables)]
+
+macro_rules! duplicate {
+   ($i: item) => {
+        mod m1 {
+            $i
+        }
+        mod m2 {
+            $i
+        }
+   }
+}
+
+duplicate! {
+    pub union U {
+        pub a: u8
+    }
+}
+
+fn main() {
+    let u1 = m1::U { a: 0 };
+    let u2 = m2::U { a: 0 };
+}