component changed; owner set

anonymous — Thu, 16 Jun 2011 14:37:42 GMT

owner set to az_sw_dude
component None → date_time

status changed; resolution set

Andrey Semashev — Wed, 12 Mar 2014 17:13:03 GMT

status new → closed
resolution → invalid

Your use of printf is incorrect. year(), month() and day() methods return class types which have conversion operators to unsigned short. This results in incorrect arguments being passed to printf, which makes the output incorrect.

A good compiler would warn you about such inconsistency, and gcc 4.8 actually does that:

ymd_test.cpp:14:81: warning: format ‘%i’ expects argument of type ‘int’, but argument 2 has type ‘boost::date_time::date<boost::gregorian::date, boost::gregorian::gregorian_calendar, boost::gregorian::date_duration>::year_type {aka boost::gregorian::greg_year}’ [-Wformat=]
  printf("%i-%02i-%02i\n",todaysdate.year(), todaysdate.month(), todaysdate.day());
                                                                                 ^
ymd_test.cpp:14:81: warning: format ‘%i’ expects argument of type ‘int’, but argument 3 has type ‘boost::date_time::date<boost::gregorian::date, boost::gregorian::gregorian_calendar, boost::gregorian::date_duration>::month_type {aka boost::gregorian::greg_month}’ [-Wformat=]
ymd_test.cpp:14:81: warning: format ‘%i’ expects argument of type ‘int’, but argument 4 has type ‘boost::date_time::date<boost::gregorian::date, boost::gregorian::gregorian_calendar, boost::gregorian::date_duration>::day_type {aka boost::gregorian::greg_day}’ [-Wformat=]              }}}

anonymous — Sun, 30 Mar 2014 14:58:21 GMT

Except that neither Qt nor MSVC 2010 detects this.

The solution would have been to always truncate the numbers but, hey, no problem. On the other hand, few people uses Boost any more (it's all in 0x11 now) for new projects and as this ticket have been open for years, older projects will have done workarounds and as I said, it doesn't impact new projects.

Cheers

Boost C++ Libraries: Ticket #5614: date bug in release (boost 1.46)

component changed; owner set

status changed; resolution set