[Boost-bugs] [Boost C++ Libraries] #2234: Spirit2/Phoenix compilation error (front on iterator_range)

Subject: [Boost-bugs] [Boost C++ Libraries] #2234: Spirit2/Phoenix compilation error (front on iterator_range)
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2008-08-20 13:06:44

#2234: Spirit2/Phoenix compilation error (front on iterator_range)
------------------------------------------------------------------------+---
 Reporter:  François Barel <frabar666_at_[hidden]>                        |       Owner:  djowel    
     Type:  Bugs                                                        |      Status:  new       
Milestone:  Boost 1.37.0                                                |   Component:  spirit    
  Version:  Boost 1.36.0                                                |    Severity:  Regression
 Keywords:  spirit phoenix action attribute const front iterator_range  |  
------------------------------------------------------------------------+---
 The following source:

 {{{
 #include <boost/spirit/include/qi.hpp>
 using namespace ::boost::spirit;
 using namespace ::boost::spirit::qi;
 using namespace ::boost::spirit::arg_names;

 #include <boost/spirit/include/phoenix_stl.hpp>
 using namespace ::boost::phoenix;

 int main()
 {
         rule< const wchar_t* > r;
         r = raw[ wchar ][ front(_1) ];

         return 0;
 }
 }}}

 worked several months ago (before Spirit2 was brought in Boost svn), but
 no longer compiles with current svn-trunk, gcc gives the following error:

 {{{
 .../boost/spirit/home/phoenix/stl/container/detail/container.hpp:42:
   error: no type named ‘const_reference’
          in ‘const class boost::iterator_range<const wchar_t*>’
 }}}

 [[BR]]

 It seems due to r44555 which made attributes const in actions, as
 {{{boost::iterator_range}}} does not contain a {{{const_reference}}}
 typedef.

 Note that replacing {{{front}}} with {{{*begin}}} works around the
 problem, since {{{boost::iterator_range}}} does contain a
 {{{const_iterator}}} typedef.

 [[BR]]

 I don't know enough about {{{iterator_range}}} and Phoenix type deduction
 to know in which one this should be fixed... please tell me if I should
 submit a feature request ticket to add a {{{const_reference}}} typedef to
 {{{iterator_range}}}.

-- 
Ticket URL: <http://svn.boost.org/trac/boost/ticket/2234>
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