private: void __thiscall boost::iostreams::file_descriptor::open(class boost::iostreams::detail::path const &, int, int)

Mangled name

?open@file_descriptor@iostreams@boost@@AAEXABVpath@detail@23@HH@Z

Exported by

size	filename	version
60416	boost_iostreams-vc110-mt-1_52.dll