--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/abi/no_unique_address2.C	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,43 @@
+// { dg-do compile { target c++11 } }
+
+struct A
+{
+  virtual void f();
+  char c;
+};
+
+struct B1 : A
+{
+  char c2;
+};
+
+struct B2
+{
+  A a [[no_unique_address]];
+  char c2;
+};
+
+struct C
+{
+  char c;
+};
+
+struct D: virtual C
+{
+  virtual void f();
+};
+
+struct B3: D
+{
+  char c2;
+};
+
+struct B4
+{
+  D d [[no_unique_address]];
+  char c2;
+};
+
+#define SA(X) static_assert ((X), #X)
+SA (sizeof (B2) == sizeof (B1));
+SA (sizeof (B3) == sizeof (B4));