Ticket #9489: boost-posix-date-time-overflow.cpp

#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/date_time/posix_time/posix_time_config.hpp>
#include <iostream>

// Demonstrates the conversion error in boost::date_time::time_resolution_traits
// Since v_type is boost::int32_t, even for 64-bit systems like
// time_resolution_traits_bi64_impl and time_resolution_traits_adapted64_impl,
// date-times whose tick-counts exceed the int32_t limit will overflow.
int main()
{
    typedef boost::posix_time::ptime        system_time;
    typedef system_time::date_type          date_type;
    typedef system_time::time_duration_type time_duration_type;

    date_type           d(2038,1,19);
    time_duration_type td(3,14,8,0);
    system_time        st(system_time(d,td));
    // snippet found in boost/thread/pthread/timespec.hpp
    boost::posix_time::time_duration const time_since_epoch =
        st - boost::posix_time::from_time_t(0);
    // the typecast error will cause total_seconds to be negative.
    std::cerr << st << std::endl;
    std::cerr << time_since_epoch.total_seconds() << std::endl;
}