[Bug c++/22009] New: Friend declaration of a private member function produces error in g++-4.0

[Bug c++/22009] New: Friend declaration of a private member function produces error in g++-4.0

[fjahanian at apple dot com]

I think following test case is correct. But g++-4.0 produces a diagnostics. We should be able to declare 
a private member function of a class as a friend of another class in order for the member function be 
able to access private members of the befriended class. 

class FriendTestTo;

class FriendTestFrom
{
private:
        void reallySetIt (FriendTestTo* PF);
};

class FriendTestTo
{
private:
  int i;
  friend void FriendTestFrom::reallySetIt (FriendTestTo*);
};

void FriendTestFrom::reallySetIt (FriendTestTo* PF){ PF->i = 1; };
% g++ -c test.cc
test.cc:6: error: 'void FriendTestFrom::reallySetIt(FriendTestTo*)' is private
test.cc:13: error: within this context

Workaround is to declare class FriendTestFrom as friend of class FriendTestTo.

-- 
           Summary: Friend declaration of a private member function produces
                    error in g++-4.0
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: fjahanian at apple dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: apple-ppc-darwin
  GCC host triplet: apple-ppc-darwin
GCC target triplet: apple-ppc-darwin


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22009

[Bug c++/22009] Friend declaration of a private member function produces error in g++-4.0

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-06-10 19:24 -------
The code is invalid.

See DR 209 which was closed as not a defect.
http://anubis.dkuug.dk/jtc1/sc22/wg21/docs/cwg_closed.html#209

This is a dup of bug 7809 which changed the behavior of GCC to match the standard.

*** This bug has been marked as a duplicate of 7809 ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |DUPLICATE


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22009