[Boost-users] Boost serializer: incomplete type error reported

From: Diego Molla (diego_at_[hidden])
Date: 2006-06-19 05:12:30

Hello,

I have an error that is puzzling me. I have defined serialization of 
several custom classes, and everything worked perfectly until we've 
changed to a new Linux OS and had to reinstall Boost. Now the program 
doesn't compile and the error given is:

  error: incomplete type 
'boost::serialization::extended_type_info_null<SetOfRules>' used in 
nested name specifier

I don't really understand why it says there is an incomplete type when 
there used to be no errors. The same error happens with all the classes 
where I've defined serialization.

The offending code for the above error message is:

void save(const SetOfRules &sor, const string &fileName)
{
   std::ofstream fout(fileName.c_str());
   boost::archive::text_oarchive oa(fout);
   oa << sor;                               // <== Here is the error
   fout.close();
} // save

Currently I'm using gcc version 4.0.4 20060507 (prerelease) (Debian 4.0.3-3)

Can anybody help?

Diego

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---------------------------------------------------------------------
Diego MOLLA ALIOD                                 diego_at_[hidden]
Department of Computing               http://www.ics.mq.edu.au/~diego
Macquarie University