public: bool __cdecl std::basic_filebuf<unsigned short, struct std::char_traits<unsigned short> >::is_open(void)const __ptr64

Mangled name

?is_open@?$basic_filebuf@GU?$char_traits@G@std@@@std@@QEBA_NXZ

Exported by

size	filename	version
853312	msvcp90.dll	9.00.30729.4148