[Boost-bugs] [Boost C++ Libraries] #10706: boost::spirit::basic_istream_iterator does not satisfy single pass iterator concept

Subject: [Boost-bugs] [Boost C++ Libraries] #10706: boost::spirit::basic_istream_iterator does not satisfy single pass iterator concept
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-10-28 15:13:58

#10706: boost::spirit::basic_istream_iterator does not satisfy single pass iterator
concept
-----------------------------------------+---------------------
 Reporter:  Nikki Chumakov <nikkikom@…>  |      Owner:  djowel
     Type:  Bugs                         |     Status:  new
Milestone:  To Be Determined             |  Component:  spirit
  Version:  Boost 1.56.0                 |   Severity:  Problem
 Keywords:                               |
-----------------------------------------+---------------------
 It is not possible, for example, to use boost::iterator_range with
 spirit::basic_istream_iterator

 {{{
 clang++ -v
 clang version 3.6.0 (trunk 216817)
 Target: x86_64-apple-darwin14.0.0
 Thread model: posix
 }}}

 {{{
 using namespace boost;
 size (iterator_range<spirit::istream_iterator> ());
 }}}

 {{{
 In file included from /opt/local/include/boost/spirit/include/qi.hpp:16:
 In file included from /opt/local/include/boost/spirit/home/qi.hpp:14:
 In file included from
 /opt/local/include/boost/spirit/home/qi/action.hpp:14:
 In file included from
 /opt/local/include/boost/spirit/home/qi/action/action.hpp:14:
 In file included from
 /opt/local/include/boost/spirit/home/qi/meta_compiler.hpp:14:
 In file included from
 /opt/local/include/boost/spirit/home/support/meta_compiler.hpp:19:
 In file included from /opt/local/include/boost/proto/proto.hpp:16:
 In file included from /opt/local/include/boost/proto/functional.hpp:14:
 In file included from
 /opt/local/include/boost/proto/functional/range.hpp:17:
 In file included from
 /opt/local/include/boost/proto/functional/range/size.hpp:12:
 In file included from /opt/local/include/boost/range/size.hpp:21:
 In file included from /opt/local/include/boost/range/size_type.hpp:20:
 /opt/local/include/boost/range/concepts.hpp:158:26: error: no matching
 constructor for initialization of
 'boost::spirit::basic_istream_iterator<char, std::__1::char_traits<char>
 >'
                 Iterator i2(++i);
                          ^  ~~~
 /opt/local/include/boost/concept/usage.hpp:16:43: note: in instantiation
 of member function
 'boost::range_detail::SinglePassIteratorConcept<boost::spirit::basic_istream_iterator<char,
 std::__1::char_traits<char> > >::~SinglePassIteratorConcept' requested
 here
     ~usage_requirements() { ((Model*)0)->~Model(); }
                                           ^
 /opt/local/include/boost/concept/detail/general.hpp:38:42: note: in
 instantiation of member function
 'boost::concepts::usage_requirements<boost::range_detail::SinglePassIteratorConcept<boost::spirit::basic_istream_iterator<char,
 std::__1::char_traits<char> > > >::~usage_requirements' requested here
     static void failed() { ((Model*)0)->~Model(); }
                                          ^
 /opt/local/include/boost/range/concepts.hpp:156:13: note: in instantiation
 of member function 'boost::concepts::requirement<boost::concepts::failed
 ************boost::concepts::usage_requirements<boost::range_detail::SinglePassIteratorConcept<boost::spirit::basic_istream_iterator<char,
 std::__1::char_traits<char> > > >::************>::failed' requested here
             BOOST_CONCEPT_USAGE(SinglePassIteratorConcept)
             ^
 /opt/local/include/boost/concept/usage.hpp:29:7: note: expanded from macro
 'BOOST_CONCEPT_USAGE'
       BOOST_CONCEPT_ASSERT((boost::concepts::usage_requirements<model>));
 \
       ^
 /opt/local/include/boost/concept/assert.hpp:43:5: note: expanded from
 macro 'BOOST_CONCEPT_ASSERT'
     BOOST_CONCEPT_ASSERT_FN(void(*)ModelInParens)
     ^
 /opt/local/include/boost/concept/detail/general.hpp:78:51: note: expanded
 from macro 'BOOST_CONCEPT_ASSERT_FN'
     &::boost::concepts::requirement_<ModelFnPtr>::failed>    \
                                                   ^
 /opt/local/include/boost/spirit/home/support/iterators/istream_iterator.hpp:56:18:
 note: candidate constructor not viable: no known conversion from
 'boost::spirit::multi_pass<std::__1::basic_istream<char>,
 boost::spirit::iterator_policies::default_policy<boost::spirit::iterator_policies::ref_counted,
 boost::spirit::iterator_policies::no_check,
 boost::spirit::iterator_policies::istream,
 boost::spirit::iterator_policies::split_std_deque> >' to
 'std::basic_istream<char, char_traits<char> > &' for 1st argument
         explicit basic_istream_iterator(std::basic_istream<Elem, Traits>&
 x)
                  ^
 /opt/local/include/boost/spirit/home/support/iterators/istream_iterator.hpp:59:9:
 note: candidate constructor not viable: no known conversion from
 'boost::spirit::multi_pass<std::__1::basic_istream<char>,
 boost::spirit::iterator_policies::default_policy<boost::spirit::iterator_policies::ref_counted,
 boost::spirit::iterator_policies::no_check,
 boost::spirit::iterator_policies::istream,
 boost::spirit::iterator_policies::split_std_deque> >' to 'const
 boost::spirit::basic_istream_iterator<char, std::__1::char_traits<char> >'
 for 1st argument
         basic_istream_iterator(basic_istream_iterator const& x)
         ^
 /opt/local/include/boost/spirit/home/support/iterators/istream_iterator.hpp:53:9:
 note: candidate constructor not viable: requires 0 arguments, but 1 was
 provided
         basic_istream_iterator()
         ^
 1 error generated.
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10706>
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