220 8099 <52A7FDA0.2010100@wanadoo.fr> article Path: news.gmane.org!not-for-mail From: "Vicente J. Botet Escriba" Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Proposal: Private extension methods Date: Wed, 11 Dec 2013 06:52:32 +0100 Lines: 45 Approved: news@gmane.org Message-ID: <52A7FDA0.2010100@wanadoo.fr> References: <05028bfb-6f6f-4ee8-9a6e-7e6eaa3a877a@isocpp.org> <64d699c7-62e0-48ce-9c58-c9b7a6038832@isocpp.org> <1902602.AxIk4I1HBX@tjmaciei-mobl2> <52A79CD3.50802@wanadoo.fr> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1386741149 1131 80.91.229.3 (11 Dec 2013 05:52:29 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 11 Dec 2013 05:52:29 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDH67CONY4PBBIX3T6KQKGQE7FLESMI@isocpp.org Wed Dec 11 06:52:35 2013 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-fa0-f70.google.com ([209.85.161.70]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Vqcip-0004Pe-3Y for gclcip-std-proposals@m.gmane.org; Wed, 11 Dec 2013 06:52:35 +0100 Original-Received: by mail-fa0-f70.google.com with SMTP id n1sf9019278fan.1 for ; Tue, 10 Dec 2013 21:52:34 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:date:from:user-agent:mime-version:to :subject:references:in-reply-to:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe:content-type:content-transfer-encoding; bh=VTHMsZT2QzKueQ84VhzMhvUD8kzT/s7u9R46f+UqDJs=; b=lYkwCXeUOqI3Qkh5BTvOYHO7N4s1hGFnsh6x2eFAf7fU0x3iIrShq2g6/o6WOGVAJn xrTo/R8cAAHm2ExjXisQ8yFHaW5wT2EpBMSOyItTnigN++29LJLBvhy2KscnSfsmLaTN ViX5P8RvrNlve0lgPOdrAKpQs6HnaP++toBQfpbQX589ncKYSItkBPxfWmhhxgy5UmrM VDfOM3w2c7/ijIMX4hAVvr1TLpmuP/sVoSrCkuP3KQOixAP5F/c2BFQM7dz++ox314A3 0eOujs0vykJ/aUaRBPdPbfpITX8qev+3umS6plqB/ZBNLOi+7H6/EcI1jGXAxeuVEN2h /FT X-Gm-Message-State: ALoCoQnghf5juxFkQHsFDw5QTj8kiJr1XwM3D2FE9WfO5LLXKS5H/SB4F/lxUTcJxxpX0JvQP5z7 X-Received: by 10.15.42.72 with SMTP id t48mr14690451eev.4.1386741154670; Tue, 10 Dec 2013 21:52:34 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.180.218.130 with SMTP id pg2ls842988wic.41.canary; Tue, 10 Dec 2013 21:52:33 -0800 (PST) X-Received: by 10.180.211.237 with SMTP id nf13mr22451380wic.55.1386741153800; Tue, 10 Dec 2013 21:52:33 -0800 (PST) Original-Received: from smtp.smtpout.orange.fr (smtp03.smtpout.orange.fr. [80.12.242.125]) by mx.google.com with ESMTP id om7si8008044wjc.42.2013.12.10.21.52.33 for ; Tue, 10 Dec 2013 21:52:33 -0800 (PST) Received-SPF: neutral (google.com: 80.12.242.125 is neither permitted nor denied by best guess record for domain of vicente.botet@wanadoo.fr) client-ip=80.12.242.125; Original-Received: from iMac-de-Vicente-Botet-Escriba.local ([92.139.147.80]) by mwinf5d57 with ME id 05sZ1n0041kJYz8035sZTS; Wed, 11 Dec 2013 06:52:33 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:24.0) Gecko/20100101 Thunderbird/24.1.1 In-Reply-To: X-Original-Sender: vicente.botet@wanadoo.fr X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 80.12.242.125 is neither permitted nor denied by best guess record for domain of vicente.botet@wanadoo.fr) smtp.mail=vicente.botet@wanadoo.fr Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:8099 Archived-At: Le 11/12/13 01:20, Ville Voutilainen a =E9crit : > On 11 December 2013 00:59, Vicente J. Botet Escriba > wrote: >> Le 10/12/13 23:46, Thiago Macieira a =E9crit : >>> class Bar; >>> class Foo >>> { >>> // ... >>> private: >>> int k; >>> friend Bar; >>> }; >>> >>> >>> /// hack.cpp >>> class Bar >>> { >>> static int &get_k(Foo *d) { return d->k; } >>> }; >>> >>> >>> To be honest, I don't know what the standard says about two different >>> declarations of the same class in the same application but not the same >>> translation unit. But the above will compile in most ABIs. >> This violated the ODR. > > > Which bit of it does that, exactly? > I expect that the class Bar will be defined somewhere else and that it=20 is not only here to hack, but maybe I miss something. Vicente --=20 ---=20 You received this message because you are subscribed to the Google Groups "= ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. Visit this group at http://groups.google.com/a/isocpp.org/group/std-proposa= ls/. .