Package: libstdc++5 Version: 3.3.3-0pre3 The symbol
std::basic_ios<char, std::char_traits<char> >::_M_setstate(std::_Ios_Iostate) is missing. Test case: ---- #include <ios> class my_basic_streambuf : public std::basic_streambuf<char, std::char_traits<char> > { }; int main() { my_basic_streambuf sb; std::basic_ios<char, std::char_traits<char> > b( &sb ); b._M_setstate( b.exceptions() ); return 0; } ---- Compiling with g++ gives a link error: undefined symbol 'std::basic_ios<char, std::char_traits<char> >::_M_setstate(std::_Ios_Iostate)'. -John