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VC++ workaround: the forward_iterator real ref check is not working

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[SVN r9499]
This commit is contained in:
Jeremy Siek
2001-03-08 20:01:35 +00:00
parent f6cc2e520f
commit cbbe851adb
1 changed files with 10 additions and 5 deletions
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15
include/boost/iterator_adaptors.hpp
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@ -579,10 +579,10 @@ template <class T> struct undefined;
// supplied, iterator_traits<Base>::difference_type is used. // supplied, iterator_traits<Base>::difference_type is used.
template <class Base, class Policies, template <class Base, class Policies,
class Value = detail::default_argument, class Value = detail::default_argument,
class Reference = typename detail::choose_default_argument<Value>::type, class Reference = BOOST_ARG_DEPENDENT_TYPENAME detail::choose_default_argument<Value>::type,
class Pointer = typename detail::choose_default_argument<Reference>::type, class Pointer = BOOST_ARG_DEPENDENT_TYPENAME detail::choose_default_argument<Reference>::type,
class Category = typename detail::choose_default_argument<Pointer>::type, class Category = BOOST_ARG_DEPENDENT_TYPENAME detail::choose_default_argument<Pointer>::type,
class Distance = typename detail::choose_default_argument<Category>::type class Distance = BOOST_ARG_DEPENDENT_TYPENAME detail::choose_default_argument<Category>::type
> >
struct iterator_adaptor : struct iterator_adaptor :
#ifdef BOOST_RELOPS_AMBIGUITY_BUG #ifdef BOOST_RELOPS_AMBIGUITY_BUG
@ -615,13 +615,18 @@ struct iterator_adaptor :
// Iterators should satisfy one of the known categories // Iterators should satisfy one of the known categories
BOOST_STATIC_ASSERT(is_input_or_output_iter); BOOST_STATIC_ASSERT(is_input_or_output_iter);
// Iterators >= ForwardIterator must produce real references. // Iterators >= ForwardIterator must produce real references
// as required by the C++ standard requirements in Table 74.
BOOST_STATIC_CONSTANT(bool, forward_iter_with_real_reference = BOOST_STATIC_CONSTANT(bool, forward_iter_with_real_reference =
(!boost::is_convertible<iterator_category*,std::forward_iterator_tag*>::value (!boost::is_convertible<iterator_category*,std::forward_iterator_tag*>::value
|| boost::is_same<reference,value_type&>::value || boost::is_same<reference,value_type&>::value
|| boost::is_same<reference,const value_type&>::value)); || boost::is_same<reference,const value_type&>::value));
#if !defined(BOOST_MSVC)
// This check gives incorrect results in iter_traits_gen_test.cpp
BOOST_STATIC_ASSERT(forward_iter_with_real_reference); BOOST_STATIC_ASSERT(forward_iter_with_real_reference);
#endif
public: public:
iterator_adaptor() { } iterator_adaptor() { }