On 05/04/14 03:46, Robert Ramey wrote:

Note that subject is treated in the manual. I forget where. You'll have to look for it. boost/libs/serialization/doc/index.html

And there are two tests which explicitly test this. see.

https://github.com/boostorg/serialization/blob/develop/test/test_non_default...

Sorry, I couldn't find the reference in the manual addressing private default constructor good/bad practice. I am undoubtedly misunderstanding something, but I'm not sure the part on non-default constructors is relevant. In any case...

never do ar & *x. This will evade certain code which the library requires. Trust the source luke!

this answers my question. Regards, Dave PS. Thanks for the great library!