Re: [Boost-bugs] [Boost C++ Libraries] #3487: using 32bit seconds type in boost::posix_time::time_duration is leading to year 2038 problem

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #3487: using 32bit seconds type in boost::posix_time::time_duration is leading to year 2038 problem
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-11-22 10:59:05

#3487: using 32bit seconds type in boost::posix_time::time_duration is leading to
year 2038 problem
------------------------------------------------------+---------------------
  Reporter:  Meike Schmidt <mschmidt.trittau@…>       |       Owner:  az_sw_dude 
      Type:  Bugs                                     |      Status:  new        
 Milestone:  Boost-1.46.0                             |   Component:  date_time  
   Version:  Boost 1.46.0                             |    Severity:  Showstopper
Resolution:                                           |    Keywords:             
------------------------------------------------------+---------------------
Changes (by anonymous):

  * version:  Boost 1.40.0 => Boost 1.46.0
  * severity:  Problem => Showstopper
  * milestone:  Boost 1.41.0 => Boost-1.46.0

Comment:

 I just stumbled over the same thing when trying to use a
 boost::posix_time::microseconds() which during the way to a 64bit value
 will be garbled by calculations around time_resolution_traits because the
 integer argument is int32_t per default.

 I would recommend that you take from the first traits parameter (that is
 used with the structs time_resolution_traits_adapted64_impl) in
 date_time/time_resolution_traits.hpp class time_resolution traits instead
 of

 typename v_type = boost::int32_t

 you better use

 typename v_type = typename frac_sec_type::int_type

 since in the end the _res structs are correctly defined as

 typedef time_resolution_traits<time_resolution_traits_adapted64_impl,
 nano,  1000000000, 9 > nano_res;

 which would make the 64bit value properly appear.

 Otherwise this all is unusable for us since we work with microseconds and
 nonoseconds since epoch timestamps on wire.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3487#comment:1>
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