Going on past my previous ETI problems thanks to Dave Abrahams' fix, I now had a problem in regex. In boost/regex/v4/regex_match.hpp, line 149+, we have: #if !defined(BOOST_NO_WREGEX) inline bool regex_match(const std::basic_string<wchar_t>& s, match_results<std::basic_string<wchar_t>::const_iterator, wregex::allocator_type>& m, const wregex& e, match_flag_type flags = match_default) This should be: #if !defined(BOOST_NO_WREGEX) inline bool regex_match(const std::basic_string<wchar_t>& s, match_results<std::basic_string<wchar_t>::const_iterator>& m, const wregex& e, match_flag_type flags = match_default) Otherwise passing a wsmatch to regex_match fails.