220 4884 article Path: news.gmane.org!not-for-mail From: Jeffrey Yasskin Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Proposal: std::sequence Date: Tue, 4 Jun 2013 22:36:21 -0700 Lines: 26 Approved: news@gmane.org Message-ID: References: <4551abbc-43aa-4520-a91a-f8eb25a90588@isocpp.org> <2c8e6079-9c87-425a-93e2-39251df57cd8@isocpp.org> <9f1cace3-0503-4a3c-a8ce-d7546564b3ef@isocpp.org> <1c991e6e-6bc3-4822-9ffd-7f2508e63974@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 X-Trace: ger.gmane.org 1370410603 20301 80.91.229.3 (5 Jun 2013 05:36:43 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 5 Jun 2013 05:36:43 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDDM34EO6QDRB2U4XOGQKGQEMSR5LTA@isocpp.org Wed Jun 05 07:36:44 2013 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-yh0-f70.google.com ([209.85.213.70]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Uk6Op-0001cc-PW for gclcip-std-proposals@m.gmane.org; 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spf=pass (google.com: domain of jyasskin@google.com designates 2607:f8b0:400d:c00::22b as permitted sender) smtp.mail=jyasskin@google.com; dkim=pass header.i=@google.com; dmarc=pass (p=REJECT dis=none) d=google.com 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:4884 Archived-At: On Tue, Jun 4, 2013 at 10:16 PM, Zhihao Yuan wrote: > On Wed, Jun 5, 2013 at 12:07 AM, James Dennett wrote: >> If you declare 'a' as const then compilers can print 10 whatever you >> type in, because they optimize away the read in a.x, because they are >> allowed to. > > Try it before you saying this. James is saying what compilers are allowed to do. You've observed that gcc and clang do not yet actually do it. Your observation doesn't mean they aren't allowed to do it, and if you care at all about the people who'll be maintaining your code in the future, you shouldn't code as if they won't do it in the future. Jeffrey -- --- 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 email 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-proposals/?hl=en. .