Subject: [Boost-bugs] [Boost C++ Libraries] #11248: Some algorithms with requirement for SinglePassRange accept range only by const reference
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-04-29 09:57:50
#11248: Some algorithms with requirement for SinglePassRange accept range only by
const reference
-------------------------------------------+------------------------
Reporter: Taras Kozlov <kozlov.taras@…> | Owner: neilgroves
Type: Bugs | Status: new
Milestone: To Be Determined | Component: range
Version: Boost 1.57.0 | Severity: Problem
Keywords: |
-------------------------------------------+------------------------
I came up with it when tried to use generator made by boost.coroutine with
boost range algorithms.
The following code doesn't compile with MSVC 2012
{{{
#include <boost/range/distance.hpp>
#include <boost/coroutine/all.hpp>
using namespace boost::range;
using namespace boost::coroutines;
asymmetric_coroutine<int>::pull_type make_dummy_range()
{
return
asymmetric_coroutine<int>::pull_type([](asymmetric_coroutine<int>::push_type&
yield)
{
yield(1);
});
}
int _tmain(int argc, _TCHAR* argv[])
{
boost::distance(make_dummy_range()); // error
return 0;
}
}}}
with error
{{{
D:\Work\3rdparty\boost_1_58_0\boost/concept_check.hpp(181): error C2079:
'boost::CopyConstructible<TT>::b' uses undefined struct
'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1> TT=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1> and
1> [
1> R=int
1> ]
1> D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(124) :
see reference to class template instantiation
'boost::CopyConstructible<TT>' being compiled
1> with
1> [
1> TT=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1> D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(147) :
see reference to class template instantiation
'boost::range_detail::IncrementableIteratorConcept<Iterator>' being
compiled
1> with
1> [
1>
Iterator=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/concept/detail/msvc.hpp(29) : see
reference to class template instantiation
'boost::range_detail::SinglePassIteratorConcept<Iterator>' being compiled
1> with
1> [
1>
Iterator=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/concept/detail/msvc.hpp(28) : while
compiling class template member function 'void
boost::concepts::check<Model>::failed(Model *)'
1> with
1> [
1>
Model=boost::range_detail::SinglePassIteratorConcept<boost::coroutines::pull_coroutine<int>::const_iterator>
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/concept/detail/msvc.hpp(66) : see
reference to class template instantiation 'boost::concepts::check<Model>'
being compiled
1> with
1> [
1>
Model=boost::range_detail::SinglePassIteratorConcept<boost::coroutines::pull_coroutine<int>::const_iterator>
1> ]
1> D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(279) :
see reference to class template instantiation
'boost::concepts::require<Model>' being compiled
1> with
1> [
1>
Model=boost::range_detail::SinglePassIteratorConcept<boost::coroutines::pull_coroutine<int>::const_iterator>
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/concept/detail/has_constraints.hpp(42)
: see reference to class template instantiation
'boost::SinglePassRangeConcept<T>' being compiled
1> with
1> [
1> T=boost::coroutines::pull_coroutine<int>
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/concept/detail/msvc.hpp(58) : see
reference to class template instantiation
'boost::concepts::not_satisfied<Model>' being compiled
1> with
1> [
1>
Model=boost::SinglePassRangeConcept<boost::coroutines::pull_coroutine<int>>
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/range/algorithm/for_each.hpp(72) : see
reference to class template instantiation
'boost::concepts::require<Model>' being compiled
1> with
1> [
1>
Model=boost::SinglePassRangeConcept<boost::coroutines::pull_coroutine<int>>
1> ]
1> coroutine_bug.cpp(29) : see reference to function template
instantiation 'UnaryFunction
boost::range::for_each<boost::coroutines::pull_coroutine<R>,wmain::<lambda_d9c6ee6ee85186807f477d3ab241bdd7>>(SinglePassRange
&,UnaryFunction)' being compiled
1> with
1> [
1>
UnaryFunction=wmain::<lambda_d9c6ee6ee85186807f477d3ab241bdd7>,
1> R=int,
1> SinglePassRange=boost::coroutines::pull_coroutine<int>
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(364): error C2027: use of undefined type
'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1> R=int
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/coroutine/asymmetric_coroutine.hpp(812)
: see declaration of
'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1> R=int
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/iterator/iterator_categories.hpp(119)
: see reference to class template instantiation
'std::iterator_traits<_Iter>' being compiled
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1> D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(126) :
see reference to class template instantiation
'boost::iterators::iterator_traversal<Iterator>' being compiled
1> with
1> [
1>
Iterator=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(364): error C2146: syntax error : missing ';'
before identifier 'iterator_category'
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(364): error C4430: missing type specifier - int
assumed. Note: C++ does not support default-int
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(364): error C2602:
'std::iterator_traits<_Iter>::iterator_category' is not a member of a base
class of 'std::iterator_traits<_Iter>'
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1> D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(364) : see declaration of
'std::iterator_traits<_Iter>::iterator_category'
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(364): error C2868:
'std::iterator_traits<_Iter>::iterator_category' : illegal syntax for
using-declaration; expected qualified-name
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(365): error C2027: use of undefined type
'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1> R=int
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/coroutine/asymmetric_coroutine.hpp(812)
: see declaration of
'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1> R=int
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(365): error C2146: syntax error : missing ';'
before identifier 'value_type'
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(365): error C4430: missing type specifier - int
assumed. Note: C++ does not support default-int
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(365): error C2602:
'std::iterator_traits<_Iter>::value_type' is not a member of a base class
of 'std::iterator_traits<_Iter>'
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1> D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(365) : see declaration of
'std::iterator_traits<_Iter>::value_type'
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(365): error C2868:
'std::iterator_traits<_Iter>::value_type' : illegal syntax for using-
declaration; expected qualified-name
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(366): error C2027: use of undefined type
'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1> R=int
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/coroutine/asymmetric_coroutine.hpp(812)
: see declaration of
'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1> R=int
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(366): error C2146: syntax error : missing ';'
before identifier 'difference_type'
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(366): error C4430: missing type specifier - int
assumed. Note: C++ does not support default-int
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(366): error C2602:
'std::iterator_traits<_Iter>::difference_type' is not a member of a base
class of 'std::iterator_traits<_Iter>'
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1> D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(366) : see declaration of
'std::iterator_traits<_Iter>::difference_type'
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(366): error C2868:
'std::iterator_traits<_Iter>::difference_type' : illegal syntax for using-
declaration; expected qualified-name
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(368): error C2027: use of undefined type
'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1> R=int
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/coroutine/asymmetric_coroutine.hpp(812)
: see declaration of
'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1> R=int
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(368): error C2146: syntax error : missing ';'
before identifier 'pointer'
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(368): error C4430: missing type specifier - int
assumed. Note: C++ does not support default-int
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(368): error C2602:
'std::iterator_traits<_Iter>::pointer' is not a member of a base class of
'std::iterator_traits<_Iter>'
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1> D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(368) : see declaration of
'std::iterator_traits<_Iter>::pointer'
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(368): error C2868:
'std::iterator_traits<_Iter>::pointer' : illegal syntax for using-
declaration; expected qualified-name
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(369): error C2027: use of undefined type
'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1> R=int
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/coroutine/asymmetric_coroutine.hpp(812)
: see declaration of
'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1> R=int
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(369): error C2146: syntax error : missing ';'
before identifier 'reference'
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(369): error C4430: missing type specifier - int
assumed. Note: C++ does not support default-int
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(369): error C2602:
'std::iterator_traits<_Iter>::reference' is not a member of a base class
of 'std::iterator_traits<_Iter>'
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1> D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(369) : see declaration of
'std::iterator_traits<_Iter>::reference'
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>D:\Program Files (x86)\Microsoft Visual Studio
11.0\VC\include\xutility(369): error C2868:
'std::iterator_traits<_Iter>::reference' : illegal syntax for using-
declaration; expected qualified-name
1> with
1> [
1>
_Iter=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>D:\Work\3rdparty\boost_1_58_0\boost/mpl/eval_if.hpp(41): error C2516:
'boost::mpl::if_<T1,T2,T3>::type' : is not a legal base class
1> with
1> [
1> T1=boost::is_convertible<int,std::output_iterator_tag>,
1>
T2=boost::mpl::identity<boost::iterators::incrementable_traversal_tag>,
1> T3=void
1> ]
1> D:\Work\3rdparty\boost_1_58_0\boost/mpl/if.hpp(70) : see
declaration of 'boost::mpl::if_<T1,T2,T3>::type'
1> with
1> [
1> T1=boost::is_convertible<int,std::output_iterator_tag>,
1>
T2=boost::mpl::identity<boost::iterators::incrementable_traversal_tag>,
1> T3=void
1> ]
1> D:\Work\3rdparty\boost_1_58_0\boost/mpl/eval_if.hpp(41) : see
reference to class template instantiation 'boost::mpl::eval_if<C,F1,F2>'
being compiled
1> with
1> [
1> C=boost::is_convertible<int,std::output_iterator_tag>,
1>
F1=boost::mpl::identity<boost::iterators::incrementable_traversal_tag>,
1> F2=void
1> ]
1> D:\Work\3rdparty\boost_1_58_0\boost/mpl/eval_if.hpp(41) : see
reference to class template instantiation 'boost::mpl::eval_if<C,F1,F2>'
being compiled
1> with
1> [
1> C=boost::is_convertible<int,std::input_iterator_tag>,
1>
F1=boost::mpl::identity<boost::iterators::single_pass_traversal_tag>,
1>
F2=boost::mpl::eval_if<boost::is_convertible<int,std::output_iterator_tag>,boost::mpl::identity<boost::iterators::incrementable_traversal_tag>,void>
1> ]
1> D:\Work\3rdparty\boost_1_58_0\boost/mpl/eval_if.hpp(41) : see
reference to class template instantiation 'boost::mpl::eval_if<C,F1,F2>'
being compiled
1> with
1> [
1> C=boost::is_convertible<int,std::forward_iterator_tag>,
1>
F1=boost::mpl::identity<boost::iterators::forward_traversal_tag>,
1>
F2=boost::mpl::eval_if<boost::is_convertible<int,std::input_iterator_tag>,boost::mpl::identity<boost::iterators::single_pass_traversal_tag>,boost::mpl::eval_if<boost::is_convertible<int,std::output_iterator_tag>,boost::mpl::identity<boost::iterators::incrementable_traversal_tag>,void>>
1> ]
1> D:\Work\3rdparty\boost_1_58_0\boost/mpl/eval_if.hpp(41) : see
reference to class template instantiation 'boost::mpl::eval_if<C,F1,F2>'
being compiled
1> with
1> [
1>
C=boost::is_convertible<int,std::bidirectional_iterator_tag>,
1>
F1=boost::mpl::identity<boost::iterators::bidirectional_traversal_tag>,
1>
F2=boost::mpl::eval_if<boost::is_convertible<int,std::forward_iterator_tag>,boost::mpl::identity<boost::iterators::forward_traversal_tag>,boost::mpl::eval_if<boost::is_convertible<int,std::input_iterator_tag>,boost::mpl::identity<boost::iterators::single_pass_traversal_tag>,boost::mpl::eval_if<boost::is_convertible<int,std::output_iterator_tag>,boost::mpl::identity<boost::iterators::incrementable_traversal_tag>,void>>>
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/iterator/iterator_categories.hpp(99) :
see reference to class template instantiation
'boost::mpl::eval_if<C,F1,F2>' being compiled
1> with
1> [
1>
C=boost::is_convertible<int,std::random_access_iterator_tag>,
1>
F1=boost::mpl::identity<boost::iterators::random_access_traversal_tag>,
1>
F2=boost::mpl::eval_if<boost::is_convertible<int,std::bidirectional_iterator_tag>,boost::mpl::identity<boost::iterators::bidirectional_traversal_tag>,boost::mpl::eval_if<boost::is_convertible<int,std::forward_iterator_tag>,boost::mpl::identity<boost::iterators::forward_traversal_tag>,boost::mpl::eval_if<boost::is_convertible<int,std::input_iterator_tag>,boost::mpl::identity<boost::iterators::single_pass_traversal_tag>,boost::mpl::eval_if<boost::is_convertible<int,std::output_iterator_tag>,boost::mpl::identity<boost::iterators::incrementable_traversal_tag>,void>>>>
1> ]
1> D:\Work\3rdparty\boost_1_58_0\boost/mpl/eval_if.hpp(41) : see
reference to class template instantiation
'boost::iterators::detail::old_category_to_traversal<Cat>' being compiled
1> with
1> [
1> Cat=int
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/iterator/iterator_categories.hpp(113)
: see reference to class template instantiation
'boost::mpl::eval_if<C,F1,F2>' being compiled
1> with
1> [
1>
C=boost::is_convertible<int,boost::iterators::incrementable_traversal_tag>,
1> F1=boost::mpl::identity<int>,
1>
F2=boost::iterators::detail::old_category_to_traversal<int>
1> ]
1>
D:\Work\3rdparty\boost_1_58_0\boost/iterator/iterator_categories.hpp(121)
: see reference to class template instantiation
'boost::iterators::iterator_category_to_traversal<Cat>' being compiled
1> with
1> [
1> Cat=int
1> ]
1>D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(126): error
C2039: 'type' : is not a member of
'boost::iterators::iterator_traversal<Iterator>'
1> with
1> [
1>
Iterator=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(126): error
C2146: syntax error : missing ';' before identifier 'traversal_category'
1>D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(126): error
C4430: missing type specifier - int assumed. Note: C++ does not support
default-int
1>D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(128): error
C2065: 'traversal_category' : undeclared identifier
1>D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(128): error
C2923: 'boost::Convertible' : 'traversal_category' is not a valid template
type argument for parameter 'X'
1>D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(128): error
C2893: Failed to specialize function template
'boost::concepts::require<Model> boost::concepts::require_(void (__cdecl
*)(Model))'
1> With the following template arguments:
1> 'boost::Convertible'
1>D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(128): error
C2056: illegal expression
1>D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(140): error
C2079: 'boost::range_detail::IncrementableIteratorConcept<Iterator>::i'
uses undefined struct
'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1>
Iterator=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1> and
1> [
1> R=int
1> ]
1>D:\Work\3rdparty\boost_1_58_0\boost/concept_check.hpp(239): error C2079:
'boost::EqualityComparable<TT>::a' uses undefined struct
'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1> TT=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1> and
1> [
1> R=int
1> ]
1> D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(148) :
see reference to class template instantiation
'boost::EqualityComparable<TT>' being compiled
1> with
1> [
1> TT=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1>D:\Work\3rdparty\boost_1_58_0\boost/concept_check.hpp(239): error C2079:
'boost::EqualityComparable<TT>::b' uses undefined struct
'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1> TT=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1> and
1> [
1> R=int
1> ]
1>D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(150): error
C2146: syntax error : missing ',' before identifier 'traversal_category'
1>D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(150): error
C2065: 'traversal_category' : undeclared identifier
1>D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(150): error
C2893: Failed to specialize function template
'boost::concepts::require<Model> boost::concepts::require_(void (__cdecl
*)(Model))'
1> With the following template arguments:
1> 'boost::Convertible'
1>D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(150): error
C2056: illegal expression
1>D:\Work\3rdparty\boost_1_58_0\boost/range/concepts.hpp(174): error
C2079: 'boost::range_detail::SinglePassIteratorConcept<Iterator>::i' uses
undefined struct 'boost::coroutines::pull_coroutine<R>::const_iterator'
1> with
1> [
1>
Iterator=boost::coroutines::pull_coroutine<int>::const_iterator
1> ]
1> and
1> [
1> R=int
1> ]
1>
1>Build FAILED.
1>
}}}
Generator models SinglePassRange and modify itself will iterating, but
distance accept range only by const reference
{{{
template< class T >
inline BOOST_DEDUCED_TYPENAME range_difference<T>::type
distance( const T& r )
{
return std::distance( boost::begin( r ), boost::end( r ) );
}
}}}
I checked other algorithms and found that some of them have non const
reference overload (for example count)
{{{
template<class SinglePassRange, class Value>
typename range_difference<SinglePassRange>::type
count(SinglePassRange& rng, const Value& val);
template<class SinglePassRange, class Value>
typename range_difference<const SinglePassRange>::type
count(const SinglePassRange& rng, const Value& val);
}}}
I tried count instead of distance and I was suprised that it doesn't
compile too.
{{{
asymmetric_coroutine<int>::pull_type make_dummy_range()
{
return
asymmetric_coroutine<int>::pull_type([](asymmetric_coroutine<int>::push_type&
yield)
{
yield(1);
});
}
int _tmain(int argc, _TCHAR* argv[])
{
asymmetric_coroutine<int>::pull_type r = make_dummy_range();
boost::count(r, 1); //still complains on const_iterator
return 0;
}
}}}
I don't understand why MSVC12 compiler still prefer const ref overload
{{{
template<class SinglePassRange, class Value>
typename range_difference<const SinglePassRange>::type
count(const SinglePassRange& rng, const Value& val);
}}}
but it is
-- Ticket URL: <https://svn.boost.org/trac/boost/ticket/11248> Boost C++ Libraries <http://www.boost.org/> Boost provides free peer-reviewed portable C++ source libraries.
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