id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
2698	date-time library and checked iterators	gast128@…	az_sw_dude	"Dear all,

posted on the users group, I think the DateTime library contains a bug. When used with checked iterators, VStudio2008 stops the programming, because an illegal dereference.

the date_facet::do_put_tm contains the follwing line:

return std::use_facet<std::time_put<CharT> >(a_ios.getloc()).put(next, 
a_ios, 
fill_char,                                                          &tm_value,
&*a_format.begin(), 
&*a_format.begin()+a_format.size());

if the a_format is empty, dereferencing is illegal according too VStudio2008. Sample program:

#include <boost\date_time\gregorian\gregorian.hpp>
#include <boost\date_time\posix_time\posix_time.hpp>
#include <sstream>

int main()
{
    boost::gregorian::date           date(2009, 1, 1);
    boost::posix_time::time_duration td(0, 0, 0, 0);
    boost::posix_time::ptime         boost_time(date, td);
    std::stringstream                sstr;

    boost::posix_time::time_facet* pFacet = new boost::posix_time::time_facet("""");
    sstr.imbue(std::locale(std::locale::classic(), pFacet));
    
    sstr << boost_time;

    return 0;
}
"	Bugs	closed	Boost 1.38.0	date_time	Boost 1.37.0	Problem	fixed	DateTime