Re: [Boost-users] [serialization] Problem deriving fromtext_oarchive_impl

16 Mar 2006

      This also failed to compile for me with VC 7.1.

However it did compile with gcc 3.3, borland 6.64 and comeau.

So its safe to say its a compiler problem. In your case you might
just make all the member public.

Robert Ramey

Robert S. Grimes wrote:
...
...
Argh!  Now if only I can remember the attachments!  They are the text
(broken) and binary (works) versions.  My broken text code in
question is presented, in part, below.  The compiler complains about
the second friend line.
-- Code --
#include <iostream>
#include <ostream>
#include 
#include 
...
; friend class
   boost::archive::basic_text_oprimitivestd::ostream; friend class
boost::archive::save_access; #endif
template<class Archive>
class rsg_text_oarchive_impl :
 // don't derive from text_oarchive !!!
 public boost::archive::text_oarchive_impl<Archive>
{
   typedef rsg_text_oarchive_impl derived_t;
#ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
public:
#else
   friend class
boost::archive::basic_text_oarchiveboost::archive::basic_text_oarchive<Archive>::init();
     }
   }
};
-- end Code - more follows here...
...
-----Original Message-----
Subject: [serialization] Problem deriving from text_oarchive_impl
Hi,
I'm starting to get the hang of this as I slog through, but it's
still a bit rough!  I'm able to derive a new archive from
binary_oarchive_impl, but for some reason, I can't do the same
with text_oarchive_impl.  Specifically, I get the following error
(from MS Visual C++ 8.0, using Boost 1.33.1):
1>..\rsg_text_oarchive.hpp(24) : error C2649:
'basic_text_oprimitive >' : is not a 'class'
1>  ..\rsg_text_oarchive.hpp(40) : see reference to class
template instantiation 'rsg_text_oarchive_impl<Archive>' being
compiled
The similar line in the binary archive works fine.  Attached are
the two derived archives in question.  All I'm trying to do (at
this point) is add a short header in the constructor; next, I'll
want to add a footer in the destructor.
Thanks!
-Bob
...
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