Hi, (possible duplicate, but I think the original was rejected 'cause of a mail alias. If not, please forgive the noise.) I'm using boost 1.32 posix_time in some code that is intended to be portable (MS VC7.1 / Solaris gcc 3.3.1 / RHLinux gcc 3.3.1). When I build with VC 7.1.3088 on Windows XP Pro SP2 get warnings about integer trunction (see below). I can duplicate it by compiling a cpp file containing a single line: #include "boost/date_time/posix_time/posix_time.hpp" and I can work around it by: #ifdef _MSC_VER #pragma warning(push) #pragma warning(disable:4244) // boost/posix_time has truncation warnings #endif // _MSC_VER #include "boost/date_time/posix_time/posix_time.hpp" //include all types plus i/o #ifdef _MSC_VER #pragma warning(pop) #endif // _MSC_VER but this might hide real problems (or this might *BE* a real problem -- I haven't really looked into the difference between a boost::date_time::counted_time_rep<config>::int_type. and a boost::date_time::gregorian_calendar_base<ymd_type_,date_int_type_>::date_int_type Suggestions? Dale The warnings: c:\Boost\include\boost-1_32\boost\date_time\time_system_counted.hpp(57) : warning C4244: 'initializing' : conversion from 'boost::date_time::counted_time_rep<config>::int_type' to 'boost::date_time::gregorian_calendar_base<ymd_type_,date_int_type_>::date_int_type', possible loss of data with [ config=boost::posix_time::millisec_posix_time_system_config ] and [ ymd_type_=boost::gregorian::greg_year_month_day, date_int_type_=boost::date_time::int_adapter<unsigned long>::int_type ] c:\Boost\include\boost-1_32\boost\date_time\time_system_counted.hpp(52) : while compiling class-template member function 'boost::date_time::counted_time_rep<config>::date_type boost::date_time::counted_time_rep<config>::date(void) const' with [ config=boost::posix_time::millisec_posix_time_system_config ] c:\Boost\include\boost-1_32\boost\date_time\time_system_counted.hpp(111) : see reference to class template instantiation 'boost::date_time::counted_time_rep<config>' being compiled with [ config=boost::posix_time::millisec_posix_time_system_config ] c:\Boost\include\boost-1_32\boost\date_time\time.hpp(52) : see reference to class template instantiation 'boost::date_time::counted_time_system<time_rep>' being compiled with [ time_rep=boost::posix_time::int64_time_rep ] c:\Boost\include\boost-1_32\boost\date_time\posix_time\ptime.hpp(32) : see reference to class template instantiation 'boost::date_time::base_time<T,time_system>' being compiled with [ T=boost::posix_time::ptime, time_system=boost::posix_time::posix_time_system ] c:\Boost\include\boost-1_32\boost\date_time\date_parsing.hpp(211) : warning C4244: 'argument' : conversion from 'std::allocator<_Ty>::value_type' to 'char', possible loss of data with [ _Ty=wchar_t ] c:\Boost\include\boost-1_32\boost\date_time\date_parsing.hpp(253) : see reference to function template instantiation 'date_type boost::date_time::from_stream_type<date_type,std::basic_string<_Elem,_Traits,_Ax>::iterator>(iterator_type &,iterator_type &,wchar_t)' being compiled with [ date_type=boost::gregorian::date, _Elem=wchar_t, _Traits=std::char_traits<wchar_t>, _Ax=std::allocator<wchar_t>, iterator_type=std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t>>::iterator ] c:\Boost\include\boost-1_32\boost\date_time\gregorian\parsers.hpp(78) : see reference to function template instantiation 'boost::date_time::period<point_rep,duration_rep> boost::date_time::from_simple_string_type<boost::gregorian::date,wchar_t>(const std::basic_string<_Elem,_Traits,_Ax> &)' being compiled with [ point_rep=boost::gregorian::date, duration_rep=boost::gregorian::date_duration, _Elem=wchar_t, _Traits=std::char_traits<wchar_t>, _Ax=std::allocator<wchar_t> ] -- ----------------------------------------------------- Dale Wilson, Senior Software Engineer Object Computing, Inc. (OCI) http://www.ociweb.com/ http://www.theaceorb.com/ ----------------------------------------------------