diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index 576486d..d4f49b3 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -814,9 +814,7 @@
                                    QualType Ty);
 
   void EmitClassMemberwiseCopy(llvm::Value *DestValue, llvm::Value *SrcValue,
-                               const CXXRecordDecl *ClassDecl,
-                               const CXXRecordDecl *BaseClassDecl,
-                               QualType Ty);
+                               const CXXRecordDecl *ClassDecl);
 
   void EmitClassCopyAssignment(llvm::Value *DestValue, llvm::Value *SrcValue,
                                const CXXRecordDecl *ClassDecl,