Re: [boost] Are you a C++ guru - prove it here !

Subject: Re: [boost] Are you a C++ guru - prove it here !
From: Manfred Doudar (manfred.doudar_at_[hidden])
Date: 2009-01-14 23:38:42

On Wed, 14 Jan 2009 20:02:22 -0800
"Robert Ramey" <ramey_at_[hidden]> wrote:

> I'm having problems with the following code below from 
> boost/serialization/export.hpp
> 
> compiling
> 
> BOOST_CLASS_EXPORT_GUID(final, "final")
> 
> results in the following error message on the gcc compilers.
> 
> error: too few template-parameter-lists
> 
> VC compilers don't complain about this.  I've tried replacing
> 
> ::boost::archive::detail::init_guid< T >::guid_initializer = \
> 
> with
> 
> ::boost::archive::detail::init_guid< T >::guid_initializer< T> =\
> 
> But this doesn't help.  Happy to get help from any C++ guru
> 
> Robert Ramey
> 
> template<typename T>
> class init_guid {
> static ::boost::archive::detail::guid_initializer<T> const
> & guid_initializer;
> };
> } // namespace detail
> } // namespace archive
> } // namespace boost
> 
> #define BOOST_CLASS_EXPORT_GUID(T, K) \
> ::boost::archive::detail::guid_initializer< T > const & \
> ::boost::archive::detail::init_guid< T >::guid_initializer = \
> ::boost::serialization::singleton< \
> ::boost::archive::detail::guid_initializer< T > \
> >::get_mutable_instance().export_guid(K); \ 
> 

#define BOOST_CLASS_EXPORT_GUID(T, K) \
 template <typename T> \
 ::boost::archive::detail::guid_initializer< T > const & \
 ::boost::archive::detail::init_guid< T >::guid_initializer = \
 ::boost::serialization::singleton< \
 ::boost::archive::detail::guid_initializer< T > \
 >::get_mutable_instance().export_guid(K);

Simple oversight - you're missing the obvious:

 template <typename T> \

at the beginning of your macro.

Cheers,
-- 
Manfred
15 January, 2009