>>>>> "Koji" == Koji Yokota <[EMAIL PROTECTED]> writes:
Koji> I attach the backtrace when the program is crashed as additional Koji> information. Looking at the backtrace, the problem happens at line 333 of boost/format/parsing.hpp: switch ( wrap_narrow(fac, *start, 0) ) { case 'X': fpar->fmtstate_.flags_ |= std::ios_base::uppercase; [...] case 'n' : fpar->argN_ = format_item_t::argN_ignored; break; default: maybe_throw_exception(exceptions, start-start0+offset, fstring_size); /// <------------------ line 333 is here } This seems to point to a problem with using widen/narrow on a facet like std::ctype<wchar_t>. Of course, I know next to nothing about that. Enrico, would you have some ideas about whether freebsd has the needed support? Was it freebsd that did not even have a wchar_t type some years ago? JMarc