Bug#377210: Re[3]: libstdc++6-4.1: std::basic_file::seekoff works incorrect

[Matthias Klose <doko@cs.tu-berlin.de>]

Sergey Nivarov writes:
> 
> Matthias Klose writes:
> > 
> > there is no g++-4.2 in etch; just create a chroot and install sid into
> > the chroot.
> > 
> 
> Thanks. Nothing changed. Still same problem.
> I made my own investigation and made a small class which fixes the problem:
> 
> template<typename _CharT, typename _Traits = std::char_traits<_CharT> >
>     class SockBuf : public std::basic_filebuf<_CharT, _Traits> {
>   public:
>   // constructor and destructor here - about the same as in class stdio_filebuf (header is in /usr/include/c++/4.2/ext/stdio_filebuf.h)
>   void nivarov_fix_gccbug() {
>     this->_M_reading = false; 
>     this->_M_writing = false;
>   }
> }
> 
> creating objects same way as stdio_filebuf in my examples i gave in bug description.
> and in c++ code where i used pubseekoff() now i call nivarov_fix_gccbug() and everything works perfect! Hope it helps you to fix the bug. If you need more information let me know.

thanks for the update; now g++-4.3 is available; please could you
check this version and report the problem upstream if it persists (see
http://gcc.gnu.org/bugzilla/).