More improvements with laying out empty bases.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82682 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaCXX/empty-class-layout.cpp b/test/SemaCXX/empty-class-layout.cpp
index 24688fa..ebbeb38 100644
--- a/test/SemaCXX/empty-class-layout.cpp
+++ b/test/SemaCXX/empty-class-layout.cpp
@@ -10,3 +10,10 @@
 
 struct C : A, B { };
 SA(2, sizeof(C) == 4);
+
+struct D { };
+struct E : D { };
+struct F : E { };
+
+struct G : E, F { };
+SA(3, sizeof(G) == 2);