2003-06-22 Paolo Carlini <pcarlini@unitus.it>
Nathan C. Myers <ncm-nospam@cantrip.org>
* include/std/std_streambuf.h (_M_move_out_cur): _M_out_lim
is now used only for filebuf, when _M_buf_unified is true.
epgtr() plays the role of _M_out_lim but it's only updated
upon overflow, underflow, uflow, seekoff/pos.
* include/bits/sstream.tcc (_M_underflow): New, implements
stringbuf::underflow and uflow.
(seekoff, seekpos): Tweak, use _M_update_egptr.
* include/std/std_sstream.h (str): Rewrote, deal correctly
with the new logic, in particular, when pptr() > egptr().
(_M_sync): When __testout && !__testin set all the get area
pointers to the current string end.
(_M_update_egptr): New, internal function updating egptr()
to the actual string end.
(_M_underflow): New, declare.
(underflow): Dispatch to _M_underflow(false).
(uflow): Dispatch to _M_underflow(true).
* include/bits/sstream.tcc (pbackfail, overflow, seekoff,
seekpos): Use only the documented derivation interface to
basic_streambuf (gptr(), setg(), etc.) to work right with
user specializations.
* include/std/std_sstream.h (str, _M_sync): Likewise.
From-SVN: r68347
