1 files changed, 19 insertions, 0 deletions
diff --git a/tests/ui/union/union-const-codegen.rs b/tests/ui/union/union-const-codegen.rs
new file mode 100644
index 00000000000..32a546cf35f
--- /dev/null
+++ b/tests/ui/union/union-const-codegen.rs
@@ -0,0 +1,19 @@
+// run-pass
+// revisions: mirunsafeck thirunsafeck
+// [thirunsafeck]compile-flags: -Z thir-unsafeck
+
+union U {
+    a: u64,
+    b: u64,
+}
+
+const C: U = U { b: 10 };
+
+fn main() {
+    unsafe {
+        let a = C.a;
+        let b = C.b;
+        assert_eq!(a, 10);
+        assert_eq!(b, 10);
+     }
+}