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Index: include/llvm/ADT/IntrusiveRefCntPtr.h
===================================================================
--- include/llvm/ADT/IntrusiveRefCntPtr.h	(revision 218294)
+++ include/llvm/ADT/IntrusiveRefCntPtr.h	(revision 218295)
@@ -197,6 +197,9 @@
   private:
     void retain() { if (Obj) IntrusiveRefCntPtrInfo<T>::retain(Obj); }
     void release() { if (Obj) IntrusiveRefCntPtrInfo<T>::release(Obj); }
+
+    template <typename X>
+    friend class IntrusiveRefCntPtr;
   };
 
   template<class T, class U>