172 bool _Filebuf_base::_M_open(const char* name, ios_base::openmode openmode,  in _M_open()
183   switch (openmode & (~ios_base::ate)) {  in _M_open()
184     case ios_base::out:  in _M_open()
185     case ios_base::out | ios_base::trunc:  in _M_open()
189     case ios_base::out | ios_base::binary:  in _M_open()
190     case ios_base::out | ios_base::trunc | ios_base::binary:  in _M_open()
194     case ios_base::out | ios_base::app:  in _M_open()
198     case ios_base::out | ios_base::app | ios_base::binary:  in _M_open()
202     case ios_base::in:  in _M_open()
206     case ios_base::in | ios_base::binary:  in _M_open()
210     case ios_base::in | ios_base::out:  in _M_open()
214     case ios_base::in | ios_base::out | ios_base::binary:  in _M_open()
218     case ios_base::in | ios_base::out | ios_base::trunc:  in _M_open()
222     case ios_base::in | ios_base::out | ios_base::trunc | ios_base::binary:  in _M_open()
245   if (openmode & ios_base::ate) {  in _M_open()
261 bool _Filebuf_base::_M_open(const char* name, ios_base::openmode openmode)  in _M_open()
273 bool _Filebuf_base::_M_open( int file_no, ios_base::openmode )  in _M_open()
285       _M_openmode = ios_base::in;  in _M_open()
288       _M_openmode = ios_base::out;  in _M_open()
291       _M_openmode = ios_base::in | ios_base::out;  in _M_open()
342 streamoff _Filebuf_base::_M_seek(streamoff offset, ios_base::seekdir dir)  in _M_seek()
347     case ios_base::beg:  in _M_seek()
352     case ios_base::cur:  in _M_seek()
355     case ios_base::end:  in _M_seek()