[Bug libstdc++/11543] basic_filebuf with custom state_type fails to compile

[peturr02 at ru dot is]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11543



------- Additional Comments From peturr02 at ru dot is  2003-07-16 09:18 -------
Created an attachment (id=4410)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4410&action=view)
Test case

Here is the error I get when I try to compile this:

g++0706 -Wall  -static	statebug.cc   -o statebug
/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.4/include/c++/bits/fstream.tcc: In 
   member function `typename std::basic_filebuf<_CharT, _Traits>::pos_type 
   std::basic_filebuf<_CharT, _Traits>::seekoff(typename _Traits::off_type, 
   std::_Ios_Seekdir, std::_Ios_Openmode) [with _CharT = wchar_t, _Traits = 
   MyCharTraits]':
/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.4/include/c++/bits/fstream.tcc:102: 
 instantiated from `typename std::basic_filebuf<_CharT,
_Traits>::__filebuf_type* std::basic_filebuf<_CharT, _Traits>::open(const
char*, std::_Ios_Openmode) [with _CharT = wchar_t, _Traits = MyCharTraits]'
statebug.cc:75:   instantiated from here
/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.4/include/c++/bits/fstream.tcc:507:
error: no
   match for 'operator=' in '__ret = (this + 
   56)->std::__basic_file<char>::seekoff(long int, std::_Ios_Seekdir, 
   std::_Ios_Openmode)((__computed_off * __width), __way, __mode)'
/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.4/include/c++/i686-pc-linux-gnu/bits/fpos.h:58:
note: candidates
   are: std::fpos<MyState>& std::fpos<MyState>::operator=(const 
   std::fpos<MyState>&)
make: *** [statebug] Error 1

This program is not expected to link, since the definitions of codecvt
members are missing.