diff --git a/test/SemaCXX/anonymous-union.cpp b/test/SemaCXX/anonymous-union.cpp
index 374241c..0590db2 100644
--- a/test/SemaCXX/anonymous-union.cpp
+++ b/test/SemaCXX/anonymous-union.cpp
@@ -111,3 +111,13 @@
 
 // <rdar://problem/6481130>
 typedef union { }; // expected-error{{declaration does not declare anything}}
+
+// <rdar://problem/7562438>
+typedef struct objc_module *Foo ;
+
+typedef struct _s {
+    union {
+        int a;
+        int Foo;
+    };
+} s, *ps;