[Boost-bugs] [Boost C++ Libraries] #2698: date-time library and checked iterators

Subject: [Boost-bugs] [Boost C++ Libraries] #2698: date-time library and checked iterators
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-01-29 16:30:23

#2698: date-time library and checked iterators
---------------------------------+------------------------------------------
 Reporter:  gast128_at_[hidden]  |       Owner:  az_sw_dude
     Type:  Bugs                 |      Status:  new       
Milestone:  Boost 1.38.0         |   Component:  date_time 
  Version:  Boost 1.37.0         |    Severity:  Problem   
 Keywords:  DateTime             |  
---------------------------------+------------------------------------------
 Dear all,

 posted on the users group, I think the DateTime library contains a bug.
 When used with checked iterators, VStudio2008 stops the programming,
 because an illegal dereference.

 the date_facet::do_put_tm contains the follwing line:

 return std::use_facet<std::time_put<CharT> >(a_ios.getloc()).put(next,
 a_ios,
 fill_char,
 &tm_value,
 &*a_format.begin(),
 &*a_format.begin()+a_format.size());

 if the a_format is empty, dereferencing is illegal according too
 VStudio2008. Sample program:

 #include <boost\date_time\gregorian\gregorian.hpp>
 #include <boost\date_time\posix_time\posix_time.hpp>
 #include <sstream>

 int main()
 {
     boost::gregorian::date           date(2009, 1, 1);
     boost::posix_time::time_duration td(0, 0, 0, 0);
     boost::posix_time::ptime         boost_time(date, td);
     std::stringstream                sstr;

     boost::posix_time::time_facet* pFacet = new
 boost::posix_time::time_facet("");
     sstr.imbue(std::locale(std::locale::classic(), pFacet));

     sstr << boost_time;

     return 0;
 }

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2698>
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