Compile error using VS2010 #399
Description
Environment:
cpp-netlib 0.11.0
boost 1.55.0
VS2010, x64, Windows 7
Including cpp-netlib/include/boost/network/protocol/http/client.hpp in the compilation produce the following errors:
[...]\boost\include\boost/range/iterator_range_core.hpp(58): error C2440: 'static_cast' : cannot convert from 'std::_Tree_const_iterator<_Mytree>' to 'std::_Tree_const_iterator<_Mytree>'
with
[
_Mytree=std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::network::http::tags::http_async_8bit_udp_resolve>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>
]
and
[
_Mytree=std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::network::http::tags::http,boost::network::http::tags::client>,boost::network::http::tags::simple>,boost::network::tags::sync>,boost::network::tags::udp>,boost::network::tags::default_string>>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>
]
No constructor could take the source type, or constructor overload resolution was ambiguous
[...]\boost\include\boost/range/iterator_range_core.hpp(189) : see reference to function template instantiation 'IteratorT boost::iterator_range_detail::iterator_range_impl<IteratorT>::adl_begin<const Range>(ForwardRange &)' being compiled
with
[
IteratorT=std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::network::http::tags::http,boost::network::http::tags::client>,boost::network::http::tags::simple>,boost::network::tags::sync>,boost::network::tags::udp>,boost::network::tags::default_string>>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>,
Range=std::pair<std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::network::http::tags::http_async_8bit_udp_resolve>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>,std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::network::http::tags::http_async_8bit_udp_resolve>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>>,
ForwardRange=std::pair<std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::network::http::tags::http_async_8bit_udp_resolve>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>,std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::network::http::tags::http_async_8bit_udp_resolve>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>>
]
[...]\cpp-netlib\include\boost/network/protocol/http/message/wrappers/headers.hpp(42) : see reference to function template instantiation 'boost::iterator_range<IteratorT>::iterator_range<std::pair<_Ty1,_Ty2>>(const Range &)' being compiled
with
[
IteratorT=std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::network::http::tags::http,boost::network::http::tags::client>,boost::network::http::tags::simple>,boost::network::tags::sync>,boost::network::tags::udp>,boost::network::tags::default_string>>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>,
_Ty1=std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::network::http::tags::http_async_8bit_udp_resolve>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>,
_Ty2=std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::network::http::tags::http_async_8bit_udp_resolve>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>,
Range=std::pair<std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::network::http::tags::http_async_8bit_udp_resolve>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>,std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::network::http::tags::http_async_8bit_udp_resolve>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>>
]
[...]\cpp-netlib\include\boost/network/protocol/http/message/wrappers/headers.hpp(41) : while compiling class template member function 'boost::iterator_range<IteratorT> boost::network::http::impl::request_headers_wrapper<Tag>::operator [](const std::basic_string<_Elem,_Traits,_Ax> &) const'
with
[
IteratorT=std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::network::http::tags::http,boost::network::http::tags::client>,boost::network::http::tags::simple>,boost::network::tags::sync>,boost::network::tags::udp>,boost::network::tags::default_string>>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>,
Tag=boost::network::http::tags::http_async_8bit_udp_resolve,
_Elem=char,
_Traits=std::char_traits<char>,
_Ax=std::allocator<char>
]
[...]\cpp-netlib\include\boost/network/protocol/http/client/facade.hpp(69) : see reference to class template instantiation 'boost::network::http::impl::request_headers_wrapper<Tag>' being compiled
with
[
Tag=boost::network::http::tags::http_async_8bit_udp_resolve
]
[...]\cpp-netlib\include\boost/network/protocol/http/client/facade.hpp(61) : while compiling class template member function 'boost::network::http::basic_response<Tag> boost::network::http::basic_client_facade<Tag,version_major,version_minor>::post(boost::network::http::basic_request<Tag>,const std::basic_string<_Elem,_Traits,_Ax> &,const std::basic_string<_Elem,_Traits,_Ax> &,boost::network::http::basic_client_facade<Tag,version_major,version_minor>::body_callback_function_type,boost::function<Signature>)'
with
[
Tag=boost::network::http::tags::http_async_8bit_udp_resolve,
version_major=1,
version_minor=1,
_Elem=char,
_Traits=std::char_traits<char>,
_Ax=std::allocator<char>,
Signature=bool (std::basic_string<char,std::char_traits<char>,std::allocator<char>> &)
]
[...]\cpp-netlib\include\boost/network/protocol/http/client.hpp(35) : see reference to class template instantiation 'boost::network::http::basic_client_facade<Tag,version_major,version_minor>' being compiled
with
[
Tag=boost::network::http::tags::http_async_8bit_udp_resolve,
version_major=1,
version_minor=1
]
D:\Data\i.beati\HEAD\bitplane\libs\common/utils/bpNetLibClient.h(51) : see reference to class template instantiation 'boost::network::http::basic_client<Tag,version_major,version_minor>' being compiled
with
[
Tag=boost::network::http::tags::http_async_8bit_udp_resolve,
version_major=1,
version_minor=1
]
[...]\boost\include\boost/range/iterator_range_core.hpp(64): error C2440: 'static_cast' : cannot convert from 'std::_Tree_const_iterator<_Mytree>' to 'std::_Tree_const_iterator<_Mytree>'
with
[
_Mytree=std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::network::http::tags::http_async_8bit_udp_resolve>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>
]
and
[
_Mytree=std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::network::http::tags::http,boost::network::http::tags::client>,boost::network::http::tags::simple>,boost::network::tags::sync>,boost::network::tags::udp>,boost::network::tags::default_string>>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>
]
No constructor could take the source type, or constructor overload resolution was ambiguous
[...]\boost\include\boost/range/iterator_range_core.hpp(189) : see reference to function template instantiation 'IteratorT boost::iterator_range_detail::iterator_range_impl<IteratorT>::adl_end<const Range>(ForwardRange &)' being compiled
with
[
IteratorT=std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::mpl::inherit2<boost::network::http::tags::http,boost::network::http::tags::client>,boost::network::http::tags::simple>,boost::network::tags::sync>,boost::network::tags::udp>,boost::network::tags::default_string>>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>,
Range=std::pair<std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::network::http::tags::http_async_8bit_udp_resolve>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>,std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::network::http::tags::http_async_8bit_udp_resolve>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>>,
ForwardRange=std::pair<std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::network::http::tags::http_async_8bit_udp_resolve>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>,std::_Tree_const_iterator<std::_Tree_val<std::_Tmap_traits<boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::string<boost::network::http::tags::http_default_8bit_tcp_resolve>::type,boost::network::impl::headers_container_impl<boost::network::http::tags::http_async_8bit_udp_resolve>::is_less_ignore_case_impl,std::allocator<std::pair<const bpString,bpString>>,true>>>>
]
In practice, it rejects a conversion from A<B<T1>::is_less_ignore_case> to A<B<T2>::is_less_ignore_case>.
The problem can be fixed ensuring that there is only one definition of is_less_ignore_case, not nesting it into a template struct:
// Code from cpp-netlib/include/boost/network/protocol/http/traits/impl/headers_container.ipp
// [...]
namespace boost { namespace network { namespace impl {
// Moving implementation from original
// message_traits implementation by
// Atomic Labs, Inc.
// --
// returns true if str1 < str2 (ignoring case)
struct is_less_ignore_case_impl {
inline bool operator() (
string<http::tags::http_default_8bit_tcp_resolve>::type const & str1,
string<http::tags::http_default_8bit_tcp_resolve>::type const & str2) const {
return to_lower_copy(str1) < to_lower_copy(str2);
};
};
template <class Tag>
struct headers_container_impl<Tag, typename enable_if<typename Tag::is_client>::type> {
typedef is_less_ignore_case_impl is_less_ignore_case;
typedef std::multimap<
string<http::tags::http_default_8bit_tcp_resolve>::type,
string<http::tags::http_default_8bit_tcp_resolve>::type,
is_less_ignore_case> type;
};
// [...]I wonder if you want to include that change in the official release.