clang은 boost :: signals2를 좋아하지 않습니까?

Question

하루 종일 Boost :: Signals2 라이브러리를 사용하여 코드 부분에서 컴파일러 오류가 발생했습니다. 나는 최소한의 예에 할 노력하고있어 감소했습니다

#include <boost/signals2.hpp> 

int foo(); 

struct first_nonzero 
{ 
    using result_type = int; 

    template <typename It> 
    result_type operator()(It first, It last) const 
    { 
    while(first != last) 
    { 
     if(*first != 0) 
     { 
      return *first; 
     } 
    } 
    return 0; 
    } 
}; 

int foo() 
{ 
    using signal = boost::signals2::signal<int(), first_nonzero>; 
    signal s; 
    return s(); 
} 

내가 템플릿 공제 오류가 겉으로 신호 라이브러리에서 오는 얻을

clang -o foo.o -c foo.cpp -std=c++11 -Weverything -Wno-c++98-compat 

로이 코드를 컴파일하려고 자체 :

In file included from foo.cpp:1: 
In file included from /usr/include/boost/signals2.hpp:19: 
In file included from /usr/include/boost/signals2/signal.hpp:38: 
In file included from /usr/include/boost/signals2/variadic_signal.hpp:21: 
/usr/include/boost/signals2/detail/variadic_slot_invoker.hpp:84:23: error: no matching function for call to 'get' 
     return func(std::get<indices>(args)...); 
        ^~~~~~~~~~~~~~~~~ 
/usr/include/boost/signals2/detail/variadic_slot_invoker.hpp:78:18: note: in instantiation of function template specialization 'boost::signals2::detail::call_with_tuple_args<int>::m_invoke<int, 
     boost::function<int()>, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, 
     boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>' requested here 
     return m_invoke(resolver, func, indices_type(), args); 
      ^
/usr/include/boost/signals2/detail/variadic_slot_invoker.hpp:120:18: note: in instantiation of function template specialization 'boost::signals2::detail::call_with_tuple_args<int>::operator()<boost::function<int 
    ()>, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, 
     boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>' requested here 
     return call_with_tuple_args<result_type>()(connectionBody->slot.slot_function(), _args); 
      ^
/usr/include/boost/signals2/detail/variadic_slot_invoker.hpp:106:18: note: in instantiation of function template specialization 'boost::signals2::detail::variadic_slot_invoker<int, 
     >::m_invoke<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot<int(), boost::function<int()> >, 
     boost::signals2::mutex> > >' requested here 
     return m_invoke(connectionBody, 
      ^
/usr/include/boost/signals2/detail/slot_call_iterator.hpp:82:35: note: in instantiation of function template specialization 'boost::signals2::detail::variadic_slot_invoker<int, 
     >::operator()<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot<int(), boost::function<int()> >, 
     boost::signals2::mutex> > >' requested here 
      cache->result.reset(cache->f(*iter)); 
          ^
/usr/include/boost/iterator/iterator_facade.hpp:514:20: note: in instantiation of member function 'boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::variadic_slot_invoker<int, >, 
     std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot<int(), boost::function<int 
    ()> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot<int(), boost::function<int()> 
     >, boost::signals2::mutex> >::dereference' requested here 
     return f.dereference(); 
      ^
/usr/include/boost/iterator/iterator_facade.hpp:639:18: note: (skipping 1 context in backtrace; use -ftemplate-backtrace-limit=0 to see all) 
     return iterator_core_access::dereference(this->derived()); 
      ^
foo.cpp:14:16: note: in instantiation of member function 'boost::iterator_facade<boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::variadic_slot_invoker<int, >, 
     std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot<int(), boost::function<int 
    ()> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot<int(), boost::function<int()> 
     >, boost::signals2::mutex> >, int, boost::single_pass_traversal_tag, const int &, long>::operator*' requested here 
     if(*first != 0) 
     ^
/usr/include/boost/signals2/detail/result_type_wrapper.hpp:53:18: note: in instantiation of function template specialization 
     'first_nonzero::operator()<boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::variadic_slot_invoker<int, >, 
     std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot<int(), boost::function<int 
    ()> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot<int(), boost::function<int()> 
     >, boost::signals2::mutex> > >' requested here 
     return combiner(first, last); 
      ^
/usr/include/boost/signals2/detail/signal_template.hpp:241:18: note: in instantiation of function template specialization 'boost::signals2::detail::combiner_invoker<int>::operator()<first_nonzero, 
     boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::variadic_slot_invoker<int, >, 
     std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot<int(), boost::function<int 
    ()> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot<int(), boost::function<int()> 
     >, boost::signals2::mutex> > >' requested here 
     return detail::combiner_invoker<typename combiner_type::result_type>() 
      ^
/usr/include/boost/signals2/detail/signal_template.hpp:695:16: note: in instantiation of member function 'boost::signals2::detail::signal_impl<int(), first_nonzero, int, std::less<int>, boost::function<int()>, 
     boost::function<int (const boost::signals2::connection &)>, boost::signals2::mutex>::operator()' requested here 
    return (*_pimpl)(BOOST_SIGNALS2_SIGNATURE_ARG_NAMES(BOOST_SIGNALS2_NUM_ARGS)); 
     ^
foo.cpp:27:13: note: in instantiation of member function 'boost::signals2::signal<int(), first_nonzero, int, std::less<int>, boost::function<int()>, boost::function<int (const boost::signals2::connection &)>, 
     boost::signals2::mutex>::operator()' requested here 
    return s(); 
     ^
/usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/utility:141:5: note: candidate template ignored: failed template argument deduction 
    get(std::pair<_Tp1, _Tp2>& __in) noexcept 
    ^
/usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/utility:146:5: note: candidate template ignored: failed template argument deduction 
    get(std::pair<_Tp1, _Tp2>&& __in) noexcept 
    ^
/usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/utility:151:5: note: candidate template ignored: failed template argument deduction 
    get(const std::pair<_Tp1, _Tp2>& __in) noexcept 
    ^
/usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/array:267:5: note: candidate template ignored: failed template argument deduction 
    get(array<_Tp, _Nm>& __arr) noexcept 
    ^
/usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/array:276:5: note: candidate template ignored: failed template argument deduction 
    get(array<_Tp, _Nm>&& __arr) noexcept 
    ^
/usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/array:284:5: note: candidate template ignored: failed template argument deduction 
    get(const array<_Tp, _Nm>& __arr) noexcept 
    ^
/usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/tuple:756:5: note: candidate template ignored: failed template argument deduction 
    get(tuple<_Elements...>& __t) noexcept 
    ^
/usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/tuple:763:5: note: candidate template ignored: failed template argument deduction 
    get(const tuple<_Elements...>& __t) noexcept 
    ^
/usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/tuple:770:5: note: candidate template ignored: failed template argument deduction 
    get(tuple<_Elements...>&& __t) noexcept 
    ^
1 error generated. 

후 나는 다른 컴파일러를 시도 미친 생각에 포기하기로 결정하고, 놀랍게도 내가

와 같은 조각을 컴파일하는 경우 약간의 시간

g++ -o foo.o -c foo.cpp -std=c++11 -Wall -Wextra -pedantic 

오류가 없습니다. 나는 Debian clang version 3.2-7ubuntu1 (tags/RELEASE_32/final) (based on LLVM 3.2)과 g++ (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1을 실행 중입니다. 부스트 라이브러리 1.54.

프로젝트 제한으로 인해 다른 컴파일러를 사용할 수 없습니다. clang에 충실하면서 boost :: signals2 라이브러리를 사용할 수있는 방법이 있습니까?

Answer 1

저는 이것이 오래된 질문이지만이 주제에 대한 몇 가지 메모는 다른 독자들에게 유용 할 수 있음을 알고 있습니다.

문제는 BOOST_NO_CXX11_HDR_TUPLE ( Boost Macro Reference)를 정의하려고하는 std::tuple 간단한 것들의 요소에 액세스 할 수 std::get이다 사용 간주하는 것입니다. 부스트/signals2/세부/variadic_slot_invoker.hpp에서

:

는

#ifdef BOOST_NO_CXX11_HDR_TUPLE 
#include <boost/tuple/tuple.hpp> 
#define BOOST_SIGNALS2_TUPLE boost::tuple 
#define BOOST_SIGNALS2_GET boost::get 
#else 
#include <tuple> 
#define BOOST_SIGNALS2_TUPLE std::tuple 
#define BOOST_SIGNALS2_GET std::get 
#endif 

이 방법 부스트는 boost::tuple/boost::get 대신 std::tuple/std::get을 사용합니다. (그러나 boost::tuple에는 현재 가변적 템플릿 지원이 없습니다).

물론 이것은 단지 일시적인 해결책 일뿐입니다. Clang (버전 3.3/3.4는 정상적으로 작동 함)을 업그레이드 할 수 있습니다.