id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
10285,local_time is not monotonic,Gaetano Mendola <mendola@…>,"James E. King, III","The following snippet seems to generate non monotonic local_date. 

I'm using boost 1.55 on linux. 

#include <boost/date_time/local_time/local_time.hpp> 
#include <boost/ptr_container/ptr_vector.hpp> 

int main() { 
  const boost::local_time::time_zone_ptr theTimeZone( 
    new boost::local_time::posix_time_zone( 
          ""CET+01CEST+01,M3.5.0/02:00,M10.5.0/03:00"") 
  ); 

  boost::local_time::local_date_time myOldValue( 
    boost::local_time::local_microsec_clock::local_time(theTimeZone)); 

  for (size_t i = 0; ; ++i) { 
    const boost::local_time::local_date_time myLocalTime = 
        boost::local_time::local_microsec_clock::local_time(theTimeZone); 

    if (myLocalTime < myOldValue) { 
      std::cout << myOldValue << std::endl; 
      std::cout << myLocalTime << std::endl; 
      std::cout << boost::local_time::local_microsec_clock::local_time(theTimeZone) << std::endl; 
      std::cout << ""===================="" << std::endl; 
    } 

    myOldValue = myLocalTime; 
  } 
} 

As you can see the program is not supposed to print anything ever, 
however this is what I'm getting: 


2014-Jul-31 00:24:56.005625 CEST 
2014-Jul-31 00:24:55.005631 CEST     <== 1 second back
2014-Jul-31 00:24:56.005946 CEST 
==================== 
2014-Jul-31 00:24:58.005625 CEST 
2014-Jul-31 00:24:57.005629 CEST     <== 1 second back
2014-Jul-31 00:24:58.005824 CEST 
==================== 
2014-Jul-31 00:25:02.005624 CEST 
2014-Jul-31 00:25:01.005628 CEST     <== 1 second back
2014-Jul-31 00:25:02.005838 CEST 
==================== 
2014-Jul-31 00:25:04.005625 CEST 
2014-Jul-31 00:25:03.005630 CEST     <== 1 second back
2014-Jul-31 00:25:04.005826 CEST 
==================== 
2014-Jul-31 00:25:06.005624 CEST 
2014-Jul-31 00:25:05.005633 CEST     <== 1 second back
2014-Jul-31 00:25:06.005853 CEST 
==================== 
2014-Jul-31 00:25:07.005625 CEST 
2014-Jul-31 00:25:06.005631 CEST     <== 1 second back
2014-Jul-31 00:25:07.005846 CEST 
==================== 
2014-Jul-31 00:25:12.005625 CEST 
2014-Jul-31 00:25:11.005631 CEST     <== 1 second back
2014-Jul-31 00:25:12.005822 CEST 
==================== 

as you can see when the local_date is near 0.005631 second fraction it 
goes back of one second and then forward again on the following call. 


",Bugs,assigned,To Be Determined,date_time,Boost 1.55.0,Problem,,,antomicx@…