2003-11-18 Paolo Carlini <pcarlini@suse.de>
PR libstdc++/12868
* include/bits/fstream.tcc (imbue): For encodings != -1 it's
always ok to imbue a new locale, provided seekoff(0, cur, ...)
doesn't fail, of course.
(underflow): In order for the above to work, deal gracefully
with _M_codecvt->in returning codecvt_base::error while
(__ilen = __iend - this->eback()) > 0: it just means __ilen
correctly converted internal characters before an error.
* testsuite/27_io/basic_filebuf/imbue/wchar_t/12868.cc: New.
From-SVN: r73697
