[Boost-users] [fusion] Compile Error using BOOST_FUSION_DEFINE_STRUCT_INLINE with VC10 and GCC 4.2.1

Subject: [Boost-users] [fusion] Compile Error using BOOST_FUSION_DEFINE_STRUCT_INLINE with VC10 and GCC 4.2.1
From: Oswin Krause (Oswin.Krause_at_[hidden])
Date: 2012-10-23 06:44:21

HI,

the following code gives a compile error on VC10 and GCC 4.2.1. Clang 
and GCC 4.7 like it:

#include <boost/fusion/sequence.hpp>
#include <boost/fusion/include/define_struct_inline.hpp>
#include <iostream>

template<class T>
struct enclosing
{
     BOOST_FUSION_DEFINE_STRUCT_INLINE(
         employee,
         (std::string, name)
         (int, age))
};

int main()
{
        enclosing<int>::employee e;
        e.name="abc";
        std::cout<<boost::fusion::deref(boost::fusion::begin(e));
}

complete error mssag on VC10:

1>c:\program files 
(x86)\boost\boost_1_51\boost\fusion\iterator\deref.hpp(34): error C2504: 
'enclosing<T>::employee::employee_iterator<boost_fusion_uglified_Seq,N>::deref<boost_fusion_uglified_T>': 
Basisklasse undefiniert
1>          with
1>          [
1>              T=int,
1>              boost_fusion_uglified_Seq=enclosing<int>::employee,
1>              N=0
1>          ]
1>          and
1>          [
1>              
boost_fusion_uglified_T=enclosing<int>::employee::employee_iterator<enclosing<int>::employee,0>
1>          ]
1>          c:\program files 
(x86)\boost\boost_1_51\boost\fusion\iterator\deref.hpp(53): Siehe 
Verweis auf die Instanziierung der gerade kompilierten Klassen-template 
"boost::fusion::extension::deref_impl<boost::fusion::iterator_facade_tag>::apply<Iterator>".
1>          with
1>          [
1>              
Iterator=enclosing<int>::employee::employee_iterator<enclosing<int>::employee,0>
1>          ]
1>          c:\users\ulfi\documents\visual studio 
2010\projects\test\test\test.cpp(18): Siehe Verweis auf die 
Instanziierung der gerade kompilierten Klassen-template 
"boost::fusion::result_of::deref<Iterator>".
1>          with
1>          [
1>              
Iterator=enclosing<int>::employee::employee_iterator<enclosing<int>::employee,0>
1>          ]
1>c:\users\ulfi\documents\visual studio 
2010\projects\test\test\test.cpp(18): error C2893: Funktionsvorlage 
'result_of::deref<Iterator>::type boost::fusion::deref(const Iterator 
&)' konnte nicht spezialisiert werden
1>          Mit den folgenden Vorlagenargumenten:
1>          
'enclosing<T>::employee::employee_iterator<boost_fusion_uglified_Seq,N>'
1>          with
1>          [
1>              T=int,
1>              boost_fusion_uglified_Seq=enclosing<int>::employee,
1>              N=0
1>          ]

I don't have a clue what is wrong here. Is the error on my side? i just 
added the template<class T> to the example code of 
BOOST_FUSION_DEFINE_STRUCT_INLINE.
Without, everything is fine.

Gretings,
Oswin