Hi, I'm testing the code below using boost 1.50.0 and Visual C++ 2008. What I expected was, the ptime t doesn't throw an exception even though it doesn't get a valid date time string passed by the wstringstream ss. When it is compiled in Release mode, it works as expected, i.e. the program runs without an error, but when compiled in Debug mode, the program stops because debug assertion fails in _chvalidator in isctype.c, which is called by std::isspace. Is there a known workaround for this? Thanks, Fumito ----- #include <iostream> #include <string> #include "boost/date_time/posix_time/posix_time.hpp" int wmain(int argc, wchar_t* argv[]) { boost::posix_time::wtime_input_facet* dt_facet(new boost::posix_time::wtime_input_facet(L"%Y/%m/%d %H:%M")); std::wstringstream ss; boost::posix_time::ptime t; ss.imbue(std::locale(ss.getloc(), dt_facet)); ss << L"あいうえお"; ss >> t; return 0; } -----