diff --git a/clang/test/SemaCXX/flexible-array-test.cpp b/clang/test/SemaCXX/flexible-array-test.cpp
index 02e3f83..95d8bb1 100644
--- a/clang/test/SemaCXX/flexible-array-test.cpp
+++ b/clang/test/SemaCXX/flexible-array-test.cpp
@@ -43,3 +43,13 @@
    int blah;
    S strings[];	// expected-error {{flexible array member 'strings' of non-POD element type 'S []'}}
 };
+
+class A {
+  int s;
+  char c[];
+};
+
+union B {
+  int s;
+  char c[]; // expected-error {{field has incomplete type 'char []'}}
+};