1 files changed, 1 insertions, 1 deletions
diff --git a/include/clang/Serialization/ASTWriter.h b/include/clang/Serialization/ASTWriter.h
index 0bc8e29f8e..1bb8edb073 100644
--- a/include/clang/Serialization/ASTWriter.h
+++ b/include/clang/Serialization/ASTWriter.h
@@ -641,7 +641,7 @@ protected:
   const ASTWriter &getWriter() const { return Writer; }
 
 public:
-  PCHGenerator(const Preprocessor &PP, const std::string &OutputFile, 
+  PCHGenerator(const Preprocessor &PP, StringRef OutputFile, 
                bool Chaining, StringRef isysroot, raw_ostream *Out);
   ~PCHGenerator();
   virtual void InitializeSema(Sema &S) { SemaPtr = &S; }