@@ -25,7 +25,7 @@ public:

         return pstream (new std::ifstream (file_path));

     }

     postream open_ofstream (const std::string &file_path,

-                            std::ios_base::open_mode mode) const override

+                            std::ios_base::openmode mode) const override

     {

         return postream (new std::ofstream (file_path, mode));

     }