[Boost-bugs] [Boost C++ Libraries] #6936: Warning 4244 in posix_time_zone.hpp

Subject: [Boost-bugs] [Boost C++ Libraries] #6936: Warning 4244 in posix_time_zone.hpp
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-05-23 17:53:07

#6936: Warning 4244 in posix_time_zone.hpp
-----------------------------------------------------+----------------------
 Reporter:  michael.cowperthwaite@…                  |        Type:  Bugs            
   Status:  new                                      |   Milestone:  To Be Determined
Component:  None                                     |     Version:  Boost 1.49.0    
 Severity:  Problem                                  |    Keywords:                  
-----------------------------------------------------+----------------------
 The warnings:
 {{{
 C:\Dev\Include\boost/date_time/local_time/posix_time_zone.hpp(433) :
 warning C4244: 'argument' : conversion from 'int' to 'unsigned short',
 possible loss of data
 1>
 C:\Dev\Include\boost/date_time/local_time/posix_time_zone.hpp(414) : while
 compiling class template member function 'void
 boost::local_time::posix_time_zone_base<CharT>::julian_no_leap(const
 std::basic_string<_Elem,_Traits,_Ax> &,const
 std::basic_string<_Elem,_Traits,_Ax> &)'
 1>        with
 1>        [
 1>            CharT=char,
 1>            _Elem=char,
 1>            _Traits=std::char_traits<char>,
 1>            _Ax=std::allocator<char>
 1>        ]
 1>        .\MYFILE.cpp(NN) : see reference to class template instantiation
 'boost::local_time::posix_time_zone_base<CharT>' being compiled
 1>        with
 1>        [
 1>            CharT=char
 1>        ]
 1>C:\Dev\Include\boost/date_time/local_time/posix_time_zone.hpp(435) :
 warning C4244: 'argument' : conversion from 'int' to 'unsigned short',
 possible loss of data
 }}}

 The line in my code that spawns this:
 {{{
 time_zone_ptr timezone;
 string tz("UTC0");  // may be changed
 //...
 timezone.reset(new posix_time_zone(tz.c_str()));  // warnings from here
 }}}

 The warnings occur within body of `julian_no_leap()` at the instantiation
 of `new partial_date_dst_rule`, specifically, one each for the start_rule
 and end_rule constructors.

 MSVC 2008, compiling on and for Windows 7.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6936>
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