I decided to look at the CW8 results, and saw that you marked the unicode_test as an expected fail. So I thought I'd see if it could be fixed. The first thing I did was to see why it was giving the warning: ### mwcc Compiler: # In: ..\boost\program_options\detail\utf8_codecvt_facet.hpp # From: ..\libs\program_options\test\unicode_test.cpp # ------------------------------------------------------ # 155: }; # Warning: ^ # 'boost::program_options::detail::utf8_codecvt_facet_wchar_t::do_length(const int &, const char *, const char *, unsigned int) const' hides inherited virtual function 'std::codecvt<wchar_t, char, int>::do_length(int &, const char *, const char *, unsigned int) const' As it turns out, this is a valid warning. It's an error in the implementation. Specifically, as stated in 22.2.1.5 the signature for do_length is: virtual int do_length(stateT&, const externT* from, const externT* end, size_t max) const; This doesn't fix the failure, but I thought you'd like to know. -- -- Grafik - Don't Assume Anything -- Redshift Software, Inc. - http://redshift-software.com -- rrivera/acm.org - grafik/redshift-software.com - 102708583/icq