diff --git a/test/SemaTemplate/dependent-base-classes.cpp b/test/SemaTemplate/dependent-base-classes.cpp
index cd90f63..3b795c9 100644
--- a/test/SemaTemplate/dependent-base-classes.cpp
+++ b/test/SemaTemplate/dependent-base-classes.cpp
@@ -109,3 +109,15 @@
     }
   };
 }
+
+namespace PR6413 {
+  template <typename T> class Base_A { };
+  
+  class Base_B { };
+  
+  template <typename T>
+  class Derived
+    : public virtual Base_A<T>
+    , public virtual Base_B
+  { };
+}