diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index 7cdec6e..4db5acc 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -1692,10 +1692,10 @@
   void FinishFunction(SourceLocation EndLoc=SourceLocation());
 
   void StartThunk(llvm::Function *Fn, GlobalDecl GD,
-                  const CGFunctionInfo &FnInfo);
+                  const CGFunctionInfo &FnInfo, bool IsUnprototyped);
 
-  void EmitCallAndReturnForThunk(llvm::Constant *Callee,
-                                 const ThunkInfo *Thunk);
+  void EmitCallAndReturnForThunk(llvm::Constant *Callee, const ThunkInfo *Thunk,
+                                 bool IsUnprototyped);
 
   void FinishThunk();
 
@@ -1705,7 +1705,8 @@
 
   /// Generate a thunk for the given method.
   void generateThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo,
-                     GlobalDecl GD, const ThunkInfo &Thunk);
+                     GlobalDecl GD, const ThunkInfo &Thunk,
+                     bool IsUnprototyped);
 
   llvm::Function *GenerateVarArgsThunk(llvm::Function *Fn,
                                        const CGFunctionInfo &FnInfo,