diff --git a/lib/CodeGen/CodeGenModule.h b/lib/CodeGen/CodeGenModule.h
index ffb1243..6e5985d 100644
--- a/lib/CodeGen/CodeGenModule.h
+++ b/lib/CodeGen/CodeGenModule.h
@@ -925,6 +925,7 @@
   void AddDependentLib(StringRef Lib);
 
   llvm::GlobalVariable::LinkageTypes getFunctionLinkage(GlobalDecl GD);
+  llvm::GlobalVariable::LinkageTypes getFunctionLinkage(const FunctionDecl *D);
 
   void setFunctionLinkage(GlobalDecl GD, llvm::GlobalValue *V) {
     V->setLinkage(getFunctionLinkage(GD));