Re: [Boost-bugs] [Boost C++ Libraries] #7680: Poor choice of difference_type for zip_iterator

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7680: Poor choice of difference_type for zip_iterator
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-11-11 05:59:16

#7680: Poor choice of difference_type for zip_iterator
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  Reporter:  matthias_berndt@…       |       Owner:  dave    
      Type:  Bugs                    |      Status:  new     
 Milestone:  To Be Determined        |   Component:  iterator
   Version:  Boost 1.52.0            |    Severity:  Problem 
Resolution:                          |    Keywords:          
-------------------------------------+--------------------------------------

Comment (by anonymous):

 According to the [[http://www.boost.org/doc/libs/1_52_0/libs/iterator/doc

 /new-iter-concepts.html|iterator concepts]], the difference_type needs to
 be a signed integral type. It should thus easily be possible to choose the
 difference_type with the biggest range from the underlying iterator types.

 Also note that g++-4.7.2 emits a warning for the above code when compiled
 with -Wsign-conversion.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7680#comment:1>
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