diff --git a/llvm/include/llvm/IR/CFG.h b/llvm/include/llvm/IR/CFG.h
--- a/llvm/include/llvm/IR/CFG.h
+++ b/llvm/include/llvm/IR/CFG.h
@@ -47,7 +47,7 @@
   using pointer = Ptr *;
   using reference = Ptr *;
 
-private:
+protected:
   using Self = PredIterator<Ptr, USE_iterator>;
   USE_iterator It;