From 3816343447565320540 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,8a1040c5e2aa56da X-Google-Attributes: gidf78e5,public X-Google-ArrivalTime: 2003-10-04 02:05:47 PST Path: archiver1.google.com!news2.google.com!newsfeed.stanford.edu!logbridge.uoregon.edu!kibo.news.demon.net!mutlu.news.demon.net!demon!mail2news.demon.co.uk!devnull From: velco@fadata.bg (Momchil Velikov) Newsgroups: comp.std.c++ Subject: Re: Is this a Bug in Comeau? (aka befriending classes in anonymous namespaces) Date: Sat, 4 Oct 2003 09:05:45 +0000 (UTC) Organization: http://groups.google.com Lines: 42 Approved: fjh@cs.mu.oz.au (Fergus Henderson , moderator of comp.std.c++) Message-ID: <87bded37.0310040043.877bae3@posting.google.com> References: <4fb4137d.0310010935.542ed05a@posting.google.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: mail2news.demon.co.uk 1065258345 26383 10.0.0.1 (4 Oct 2003 09:05:45 GMT) X-Complaints-To: abuse@demon.net NNTP-Posting-Date: Sat, 4 Oct 2003 09:05:45 +0000 (UTC) X-Received: from mulga.cs.mu.oz.au ([128.250.1.22]) by news.demon.co.uk with esmtp (Exim 4.12) id 1A5iMC-0006rO-00 for mail2news@news.news.demon.net; Sat, 04 Oct 2003 09:05:44 +0000 X-Received: from localhost (localhost [[UNIX: localhost]]) by mulga.cs.mu.OZ.AU id TAA04599; Sat, 4 Oct 2003 19:05:40 +1000 (EST) X-Authentication-Warning: mulga.cs.mu.OZ.AU: fjh set sender to devnull@stump.algebra.com using -f X-Path: comp-std-cpp-robomod!not-for-mail X-Robomod: STUMP, ichudov@algebra.com (Igor Chudov) X-Delivered-To: std-c++@ucar.edu X-Newsgroups: comp.std.c++ X-NNTP-Posting-Date: Sat, 4 Oct 2003 08:43:03 +0000 (UTC) X-Spamscanner: mailbox1.ucsd.edu (v1.2 May 26 2003 01:55:38, -1.0/5.0 2.55) X-MailScanner: PASSED (v1.2.8 84941 h948h6E8089920 mailbox1.ucsd.edu) X-Spam-Status: No, hits=-5.1 required=5.0 tests=BAYES_10,QUOTED_EMAIL_TEXT,REFERENCES version=2.55 X-Spam-Checker-Version: SpamAssassin 2.55 (1.174.2.19-2003-05-19-exp) Xref: archiver1.google.com comp.std.c++:33 johnchx2@yahoo.com (johnchx) wrote in message news:<4fb4137d.0310010935.542ed05a@posting.google.com>... > fvali@kumc.edu ("Faisal Vali") wrote > > > The following did not work either (trying to use Qualified Name lookup > > to prevent the auto-declaration 'feature' of friend declarations) > > This seems to be a common confusion. There is no "auto-declaration > 'feature'" and you can't disable it. A friend declaration *is* a > declaration, always and everywhere. Put another way, the name > declared as a friend is never "looked up," it is simply declared. > > So the problem with this code ... > > namespace { class M; } > > class RD { friend class M; typedef int Q; }; > > namespace { class M { RD::Q i; }; } > > is that the friend declaration introduces a new class named M, and > there's no way rewrite the friend declaration to explicitly refer to > ::M because is...well...unnamed. Doesn't make sense. A "friend" declaration is a friend declaration, not class declaration. It does not introduce a new class, it refers to a class specified by 1ISO/IEC 14882:1998(E) 11.4 "Friends" "7 A name nominated by a friend declaration shall be accessible in the scope of the class containing the friend declaration." Thus in the above example "friend class M", refers to a class accessible at namespace scope, and according to the definition of unnamed namespaces this class is ::M. ~velco --- [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@ncar.ucar.edu ] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://www.jamesd.demon.co.uk/csc/faq.html ]