220 35680 article Path: news.gmane.org!.POSTED!not-for-mail From: Jake Arkinstall Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Rotational shift operator Date: Thu, 30 Nov 2017 21:34:07 +0000 Lines: 66 Approved: news@gmane.org Message-ID: References: <69593098-e2cc-487e-bd14-9001b27aa7c1@isocpp.org> <8575602.V2okVmv5xV@tjmaciei-mobl1> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="001a113db2c6228039055f3a03fd" X-Trace: blaine.gmane.org 1512077649 12178 195.159.176.226 (30 Nov 2017 21:34:09 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 30 Nov 2017 21:34:09 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDCZX3WUUQFRBUPSQHIQKGQE634FAYQ@isocpp.org Thu Nov 30 22:34:04 2017 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-oi0-f72.google.com ([209.85.218.72]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eKWT5-0002ov-H4 for gclcip-std-proposals@m.gmane.org; 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[209.85.220.41]) by mx.google.com with SMTPS id k62sor1830731oib.303.2017.11.30.13.34.09 for (Google Transport Security); Thu, 30 Nov 2017 13:34:09 -0800 (PST) Received-SPF: pass (google.com: domain of jake.arkinstall@gmail.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41; X-Received: by 10.202.73.144 with SMTP id w138mr5709852oia.213.1512077648883; Thu, 30 Nov 2017 13:34:08 -0800 (PST) Original-Received: by 10.168.69.140 with HTTP; Thu, 30 Nov 2017 13:34:07 -0800 (PST) Original-Received: by 10.168.69.140 with HTTP; Thu, 30 Nov 2017 13:34:07 -0800 (PST) In-Reply-To: X-Original-Sender: jake.arkinstall@gmail.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=N2hsTtai; spf=pass (google.com: domain of jake.arkinstall@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=jake.arkinstall@gmail.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gmail.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:35680 Archived-At: --001a113db2c6228039055f3a03fd Content-Type: text/plain; charset="UTF-8" On 30 Nov 2017 21:25, "Hyman Rosen" wrote: The code I posted deliberately had undefined behavior over a subrange of its possible inputs. But why are you so insistent that the old undefined behaviour must be the same as the new undefined behaviour? The entire point of C++ standards is to have a well defined set of valid operations that we all agree upon, not to put shoddy code on a pedestal and give it unofficial support. We are talking about edge cases here, and those edge cases only arise when something is being done to a bad standard. I fail to see how this is a priority. Unless I'm missing your point. -- 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. To view this discussion on the web visit https://groups.google.com/a/isocpp.org/d/msgid/std-proposals/CAC%2B0CCOfnXaaVh20Gi%2B9bbuog%2B5B6dQhtxNbeSjdNyEHvO90Sg%40mail.gmail.com. --001a113db2c6228039055f3a03fd Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
On 30 Nov 2017 21:25, "Hyman Rosen"<hyman.rosen@gmail.com> wrote:<= div class=3D"gmail_extra">
<= div class=3D"quoted-text">The code I posted deliberately had undefined beha= vior over a subrange of its
possible inputs.=C2=A0

But why are you so insistent that the old undefined behaviour mu= st be the same as the new undefined behaviour?

<= /div>
The entire point of C++ standards is to have a well = defined set of valid operations that we all agree upon, not to put shoddy c= ode on a pedestal and give it unofficial support. We are talking about edge= cases here, and those edge cases only arise when something is being done t= o a bad standard. I fail to see how this is a priority.

Unless I'm missing your point.

--
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--001a113db2c6228039055f3a03fd-- .