Re: [Boost-bugs] [Boost C++ Libraries] #9431: Problem compiling zip_iterator with clang and C++11

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #9431: Problem compiling zip_iterator with clang and C++11
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-11-27 20:27:15

#9431: Problem compiling zip_iterator with clang and C++11
-------------------------------+------------------------------
  Reporter:  jonathan.jones@…  |      Owner:  jeffrey.hellrung
      Type:  Bugs              |     Status:  new
 Milestone:  To Be Determined  |  Component:  iterator
   Version:  Boost 1.49.0      |   Severity:  Problem
Resolution:                    |   Keywords:
-------------------------------+------------------------------

Comment (by jonathan.jones@…):

 The core problem seems to be this:

 {{{
 boost::detail::facade_iterator_category<boost::random_access_traversal_tag,
 boost::tuple<T&>, boost::tuple<T&> >::type
 }}}

 evaluates to the type:

 {{{
 boost::detail::iterator_category_with_traversal<std::input_iterator_tag,
 boost::random_access_traversal_tag>
 }}}

 This is how zip_iterator instantiates it, with boost::tuple<T&> as both
 the value and the reference type.

 The newest implementation of std::fill in Xcode has implementations
 specific to forward_iterator_tag and random_access_iterator_tag, but not
 input_iterator_tag, hence the failure to compile.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/9431#comment:1>
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