Hi, to be compatible with a given interface I need to encapsulate a boost::gregorian::date. I have a problem with the formatted output of the date-object. I tried a given example: date d(2005,Jun,25); date_facet* facet(new date_facet("%A %B %d, %Y")); std::stringstream ss; ss.imbue(std::locale(std::cout.getloc(), facet)); ss << d; std::cout << ss.str() << std::endl; facet->format("%Y"); ss.str(""); ss << d; std::cout << ss.str() << std::endl; this works fine. But the same inside an object causes an segmentation-fault: class MyDate { date m_date; std::stringstream ss; date_facet* facet; Date() : m_date(day_clock::local_day()), facet(new date_facet("%A %B %d, %Y")) { ss.imbue(std::locale(std::cout.getloc(), facet)); } std::string Date::format(std::string pattern) { facet->format(pattern.c_str()); ss.str(""); ss << m_date; return ss.str(); } } Can anybody tell me what Im doing wrong and how to do it better ? Thanks a lot gizmo -- Ist Ihr Browser Vista-kompatibel? Jetzt die neuesten Browser-Versionen downloaden: http://www.gmx.net/de/go/browser -- Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer