Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!uunet!mcsun!ukc!edcastle!ecsv38
From: ecsv38@castle.ed.ac.uk (S Manoharan)
Newsgroups: comp.lang.c++
Subject: Scope of friendship
Message-ID: <6142@castle.ed.ac.uk>
Date: 5 Sep 90 14:54:38 GMT
Sender: ecsv38@castle.ed.ac.uk
Reply-To: sam@lfcs.ed.ac.uk
Organization: Dept of Computer Science, University of Edinburgh
Lines: 31

Can a derived class automatically be a friend of a class whose 
friend is the base class?

class Z {
friend class Base;
private:
   int foo;
};

class Base {
private:
   Z bar;
public:
   void testB() { bar.foo = 1; }
};

class Derived : public Base {
private:
   Z bar;
public:
   void testD() { bar.foo = 1; }
};

Specifically, Base can access Z::foo; but, why shouldn't Derived
be permitted to access Z::foo?

Grrr! g++ (1.37.1) does not allow Z::foo to be accessed by Derived.

Thanks for your attention.

Manoharan.