Failing to compile code that uses boost::signals2

The following code fails to compile (Boost 1.55, latest Intel C++ compiler):

class Order {};

class Foo

{

  signal<void(Order*)> beforeOrder;

  void test(Order* o)

  {

    beforeOrder(o);

  }

};

int main(int argc, char* argv[])

{

  Order o;

  Foo foo;

    return 0;

}

Here's the compiler output:

1>C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\include\xmemory(348): warning C4996: 'std::_Uninitialized_copy0': Function call with parameters that may be unsafe - this call relies on the caller to check that the passed values are correct. To disable this warning, use -D_SCL_SECURE_NO_WARNINGS. See documentation on how to use Visual C++ 'Checked Iterators'

1>          C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\include\xmemory(333) : see declaration of 'std::_Uninitialized_copy0'

1>          c:\boost\boost/signals2/detail/auto_buffer.hpp(192) : see reference to function template instantiation '_FwdIt std::uninitialized_copy<I,boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_>*>(_InIt,_InIt,_FwdIt)' being compiled

1>          with

1>          [

1>              _FwdIt=boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *

1>  ,            I=boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *

1>  ,            _InIt=boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *

1>          ]

1>          c:\boost\boost/signals2/detail/auto_buffer.hpp(179) : see reference to function template instantiation 'void boost::signals2::detail::auto_buffer<boost::signals2::detail::void_shared_ptr_variant,boost::signals2::detail::store_n_objects<10>,boost::signals2::detail::default_grow_policy,std::allocator<_Ty>>::copy_rai<I,false>(I,I,boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *,const boost::integral_constant<bool,false> &)' being compiled

1>          with

1>          [

1>              _Ty=boost::signals2::detail::void_shared_ptr_variant

1>  ,            I=boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *

1>          ]

1>          c:\boost\boost/signals2/detail/auto_buffer.hpp(179) : see reference to function template instantiation 'void boost::signals2::detail::auto_buffer<boost::signals2::detail::void_shared_ptr_variant,boost::signals2::detail::store_n_objects<10>,boost::signals2::detail::default_grow_policy,std::allocator<_Ty>>::copy_rai<I,false>(I,I,boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *,const boost::integral_constant<bool,false> &)' being compiled

1>          with

1>          [

1>              _Ty=boost::signals2::detail::void_shared_ptr_variant

1>  ,            I=boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *

1>          ]

1>          c:\boost\boost/signals2/detail/auto_buffer.hpp(205) : see reference to function template instantiation 'void boost::signals2::detail::auto_buffer<boost::signals2::detail::void_shared_ptr_variant,boost::signals2::detail::store_n_objects<10>,boost::signals2::detail::default_grow_policy,std::allocator<_Ty>>::copy_impl<I>(I,I,boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *,std::random_access_iterator_tag)' being compiled

1>          with

1>          [

1>              _Ty=boost::signals2::detail::void_shared_ptr_variant

1>  ,            I=boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *

1>          ]

1>          c:\boost\boost/signals2/detail/auto_buffer.hpp(205) : see reference to function template instantiation 'void boost::signals2::detail::auto_buffer<boost::signals2::detail::void_shared_ptr_variant,boost::signals2::detail::store_n_objects<10>,boost::signals2::detail::default_grow_policy,std::allocator<_Ty>>::copy_impl<I>(I,I,boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *,std::random_access_iterator_tag)' being compiled

1>          with

1>          [

1>              _Ty=boost::signals2::detail::void_shared_ptr_variant

1>  ,            I=boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *

1>          ]

1>          c:\boost\boost/signals2/detail/auto_buffer.hpp(289) : see reference to function template instantiation 'void boost::signals2::detail::auto_buffer<boost::signals2::detail::void_shared_ptr_variant,boost::signals2::detail::store_n_objects<10>,boost::signals2::detail::default_grow_policy,std::allocator<_Ty>>::copy_impl<boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_>*>(I,I,boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *)' being compiled

1>          with

1>          [

1>              _Ty=boost::signals2::detail::void_shared_ptr_variant

1>  ,            I=boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *

1>          ]

1>          c:\boost\boost/signals2/detail/auto_buffer.hpp(289) : see reference to function template instantiation 'void boost::signals2::detail::auto_buffer<boost::signals2::detail::void_shared_ptr_variant,boost::signals2::detail::store_n_objects<10>,boost::signals2::detail::default_grow_policy,std::allocator<_Ty>>::copy_impl<boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_>*>(I,I,boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *)' being compiled

1>          with

1>          [

1>              _Ty=boost::signals2::detail::void_shared_ptr_variant

1>  ,            I=boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *

1>          ]

1>          c:\boost\boost/signals2/detail/auto_buffer.hpp(282) : while compiling class template member function 'boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *boost::signals2::detail::auto_buffer<boost::signals2::detail::void_shared_ptr_variant,boost::signals2::detail::store_n_objects<10>,boost::signals2::detail::default_grow_policy,std::allocator<_Ty>>::move_to_new_buffer(unsigned __int64,const boost::false_type &)'

1>          with

1>          [

1>              _Ty=boost::signals2::detail::void_shared_ptr_variant

1>          ]

1>          c:\boost\boost/signals2/detail/auto_buffer.hpp(304) : see reference to function template instantiation 'boost::variant<boost::shared_ptr<void>,boost::signals2::detail::foreign_void_shared_ptr,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_> *boost::signals2::detail::auto_buffer<boost::signals2::detail::void_shared_ptr_variant,boost::signals2::detail::store_n_objects<10>,boost::signals2::detail::default_grow_policy,std::allocator<_Ty>>::move_to_new_buffer(unsigned __int64,const boost::false_type &)' being compiled

1>          with

1>          [

1>              _Ty=boost::signals2::detail::void_shared_ptr_variant

1>          ]

1>          c:\boost\boost/signals2/detail/slot_call_iterator.hpp(40) : see reference to class template instantiation 'boost::signals2::detail::auto_buffer<boost::signals2::detail::void_shared_ptr_variant,boost::signals2::detail::store_n_objects<10>,boost::signals2::detail::default_grow_policy,std::allocator<_Ty>>' being compiled

1>          with

1>          [

1>              _Ty=boost::signals2::detail::void_shared_ptr_variant

1>          ]

1>          c:\boost\boost/signals2/detail/slot_call_iterator.hpp(44) : see reference to class template instantiation 'boost::signals2::detail::slot_call_iterator_cache<ResultType,Function>' being compiled