libcxx/src/strstream.cpp

257         off_type newoff;
262             newoff = 0;
265             newoff = (pos_in ? gptr() : pptr()) - eback();
268             newoff = seekhigh - eback();
273         newoff += __off;
274         if (0 <= newoff && newoff <= seekhigh - eback())
276             char* newpos = eback() + newoff;
286             __p = newoff;
302             off_type newoff = __sp;
304             if (0 <= newoff && newoff <= seekhigh - eback())
306                 char* newpos = eback() + newoff;
316                 __p = newoff;