From: Lawrence Spector (Lawrence.Spector_at_[hidden])
Date: 2006-11-29 19:14:56
Hi all. I'm playing with the boost::serialization library, but having a
compile issue, with a very obscure error message. It is as follows:
Compiler: VC7.1 on Windows XP
I get the following compile errors:
Compiling...
TestClass.cpp
c:\Dev.Releasev7.2.CR4556\3rdparty\boost\boost\archive\detail\iserialize
r.hpp(142) : error C2027: use of undefined type
'boost::serialization::extended_type_info_null<T>'
with
[
T=CppTestClass
]
c:\Dev.Releasev7.2.CR4556\3rdparty\boost\boost\archive\detail\iserialize
r.hpp(142) : see reference to class template instantiation
'boost::serialization::extended_type_info_null<T>' being compiled
with
[
T=CppTestClass
]
c:\Dev.Releasev7.2.CR4556\3rdparty\boost\boost\archive\detail\iserialize
r.hpp(138) : while compiling class-template member function 'bool
boost::archive::detail::iserializer<Archive,T>::is_polymorphic(void)
const'
with
[
Archive=boost::archive::text_wiarchive,
T=CppTestClass
]
c:\Dev.Releasev7.2.CR4556\3rdparty\boost\boost\archive\detail\iserialize
r.hpp(375) : see reference to class template instantiation
'boost::archive::detail::iserializer<Archive,T>' being compiled
with
[
Archive=boost::archive::text_wiarchive,
T=CppTestClass
]
c:\Dev.Releasev7.2.CR4556\3rdparty\boost\boost\archive\detail\iserialize
r.hpp(369) : while compiling class-template member function 'void
boost::archive::detail::load_non_pointer_type<Archive,T>::load_standard:
:invoke(Archive &,T &)'
with
[
Archive=boost::archive::text_wiarchive,
T=CppTestClass
]
c:\Dev.Releasev7.2.CR4556\3rdparty\boost\boost\archive\detail\iserialize
r.hpp(425) : see reference to class template instantiation
'boost::archive::detail::load_non_pointer_type<Archive,T>::load_standard
' being compiled
with
[
Archive=boost::archive::text_wiarchive,
T=CppTestClass
]
c:\Dev.Releasev7.2.CR4556\3rdparty\boost\boost\archive\detail\iserialize
r.hpp(418) : while compiling class-template member function 'void
boost::archive::detail::load_non_pointer_type<Archive,T>::invoke(Archive
&,T &)'
with
[
Archive=boost::archive::text_wiarchive,
T=CppTestClass
]
c:\Dev.Releasev7.2.CR4556\3rdparty\boost\boost\archive\detail\iserialize
r.hpp(572) : see refe
rence to class template instantiation
'boost::archive::detail::load_non_pointer_type<Archive,T>' being
compiled
with
[
Archive=boost::archive::text_wiarchive,
T=CppTestClass
]
c:\Dev.Releasev7.2.CR4556\3rdparty\boost\boost\archive\basic_text_iarchi
ve.hpp(64) : see reference to function template instantiation 'void
boost::archive::load<Archive,T>(Archive &,T &)' being compiled
with
[
Archive=boost::archive::text_wiarchive,
T=CppTestClass
]
c:\Dev.Releasev7.2.CR4556\3rdparty\boost\boost\archive\text_wiarchive.hp
p(68) : see reference to function template instantiation 'void
boost::archive::basic_text_iarchive<Archive>::load_override<T>(T &,int)'
being compiled
with
[
Archive=boost::archive::text_wiarchive,
T=CppTestClass
]
c:\Dev.Releasev7.2.CR4556\3rdparty\boost\boost\archive\detail\interface_
iarchive.hpp(76) : see reference to function template instantiation
'void boost::archive::text_wiarchive_impl<Archive>::load_override<T>(T
&,int)' being compiled
with
[
Archive=boost::archive::text_wiarchive,
T=CppTestClass
]
c:\Work\Sandbox\CppThroughCOM\CppThroughCOM\TestClass.cpp(67) :
see reference to function template instantiation 'Archive
&boost::archive::detail::interface_iarchive<Archive>::operator
>><CppTestClass>(T &)' being compiled
with
[
Archive=boost::archive::text_wiarchive,
T=CppTestClass
]
c:\Dev.Releasev7.2.CR4556\3rdparty\boost\boost\archive\detail\iserialize
r.hpp(142) : error C2146: syntax error : missing ';' before identifier
'typex'
c:\Dev.Releasev7.2.CR4556\3rdparty\boost\boost\archive\detail\iserialize
r.hpp(142) : error C2065: 'typex' : undeclared identifier
Here's my code:
CppTestClass.hpp:
#pragma once
#include <boost/serialization/serialization.hpp>
#include <boost/serialization/base_object.hpp>
#include <boost/serialization/version.hpp>
class CppTestClass
{
private:
int m_x;
public:
CppTestClass(void);
virtual ~CppTestClass(void);
private:
friend class boost::serialization::access;
template<class Archive>
void load(Archive & ar, const unsigned int version)
{
ar & version;
ar & m_x;
}
template<class Archive>
void save(Archive & ar, const unsigned int version) const
{
ar & version;
ar & m_x;
}
public:
friend std::wostream& operator<<(std::wostream& p_stream, const
CppTestClass& p_testClass)
{
p_stream << p_testClass.m_x;
return p_stream;
}
friend std::wistream& operator>>(std::wistream& p_stream,
CppTestClass& p_testClass)
{
p_stream >> p_testClass.m_x;
return p_stream;
}
BOOST_SERIALIZATION_SPLIT_MEMBER()
public:
void setX(int p_x)
{
m_x = p_x;
}
int getX() const
{
return m_x;
}
};
BOOST_CLASS_VERSION(CppTestClass, 1)
In TestClass.cpp:
This gives no compile errors:
std::wstringstream ofs;
boost::archive::text_woarchive oa(ofs);
// write class instance to archive
ofs << m_cppTestClass;
ofs >> serData;
However, this does:
// create and open an archive for input
std::wstringstream ifs;
ifs << serData;
boost::archive::text_wiarchive ia(ifs);
// read class state from archive
ia >> m_cppTestClass; //!!! errant line?
Any ideas what's going on?
Thanks in advance,
Lawrence