From 6241294702297194960 X-Google-Language: ENGLISH,ASCII X-Google-Thread: f78e5,b54cf208661f77da,start X-Google-Attributes: gidf78e5,public X-Google-ArrivalTime: 2003-07-14 14:58:59 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed.fjserv.net!kibo.news.demon.net!mutlu.news.demon.net!demon!mail2news.demon.co.uk!devnull From: daniel.frey@aixigo.de (Daniel Frey) Newsgroups: comp.std.c++ Subject: About DR 372 Date: Mon, 14 Jul 2003 21:58:59 +0000 (UTC) Organization: WESTEND GmbH - Aachen (+49 241 7013330) Lines: 50 Approved: fjh@cs.mu.oz.au (Fergus Henderson , moderator of comp.std.c++) Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable X-Trace: mail2news.demon.co.uk 1058219939 24484 10.0.0.1 (14 Jul 2003 21:58:59 GMT) X-Complaints-To: abuse@demon.net NNTP-Posting-Date: Mon, 14 Jul 2003 21:58:59 +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 19cBLV-0006Ml-00 for mail2news@news.news.demon.net; Mon, 14 Jul 2003 21:58:58 +0000 X-Received: from localhost (localhost [[UNIX: localhost]]) by mulga.cs.mu.OZ.AU id HAA24781; Tue, 15 Jul 2003 07:58:55 +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-User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3) Gecko/20030312 X-Accept-Language: en-us, en X-Spam-Status: No, hits=-1.8 required=5.0 tests=INVALID_MSGID,NOSPAM_INC,SPAM_PHRASE_03_05,USER_AGENT, USER_AGENT_MOZILLA_UA,X_ACCEPT_LANG version=2.41 X-MIME-Autoconverted: from quoted-printable to 8bit by mulga.cs.mu.OZ.AU id UAA22795 X-MIME-Autoconverted: from 8bit to quoted-printable by mulga.cs.mu.OZ.AU id HAA24781 Xref: archiver1.google.com comp.std.c++:20097 I just read DR 372 and I think that the problem presented is not really=20 discussed/solved properly. Consider this example: class A { protected: typedef int N; }; template< typename T > class B {}; template< typename U > class C : public U, public B< typename U::N > {}; C< A > x; The question is: If C is derived from A as above, is it allowed to=20 access A::N before the classes opening '{'? The main problem is that you need to access U's protected parts in C's=20 base-clause. This pattern is common when using policies, Andrei's Loki=20 library was bitten by it as he tried to make some parts of the policies=20 'protected' but some compilers rejected the code. They were right to=20 reject it, I think it's 11.4/2 that applies here and prevents the code=20 above to be legal, although it addresses a different and reasonable=20 example. To me, it seems wrong to reject the code as it is perfectly=20 reasonable to write such stuff. The questions are: - Do you agree it's reasonable? - Is it a DR or is it a request for an extension? - Is DR 372 the right place to address it or shall it be a new DR? Regards, Daniel --=20 Daniel Frey aixigo AG - financial training, research and technology Schlo=DF-Rahe-Stra=DFe 15, 52072 Aachen, Germany fon: +49 (0)241 936737-42, fax: +49 (0)241 936737-99 eMail: daniel.frey@aixigo.de, web: http://www.aixigo.de --- [ 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 ]