Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!sunic!tut!tukki!sakkinen
From: sakkinen@tukki.jyu.fi (Markku Sakkinen)
Newsgroups: comp.lang.c++
Subject: Re: Protected members
Message-ID: <2219@tukki.jyu.fi>
Date: 30 Nov 89 08:36:51 GMT
References: <1989Nov28.122925.20804@newcastle.ac.uk> <1111@mit-amt.MEDIA.MIT.EDU> <2218@tukki.jyu.fi>
Reply-To: sakkinen@jytko.jyu.fi (Markku Sakkinen)
          SAKKINEN@FINJYU.bitnet (alternative)
Organization: University of Jyvaskyla, Finland
Lines: 13

Sorry, I posted the previous article without thinking about this:
_If_ the trick suggested at the end (deriving from a dummy friend class)
works, then of course B gains access to private members of A as well.
This is an unwanted consequence. Perhaps a "half-friend" declaration
should be added to C++, allowing access to protected but not to private
members ('acquaintance' has been pre-empted for other purposes :-) ).

Markku Sakkinen
Department of Computer Science
University of Jyvaskyla (a's with umlauts)
Seminaarinkatu 15
SF-40100 Jyvaskyla (umlauts again)
Finland