220 35105 article Path: news.gmane.org!.POSTED!not-for-mail From: Nevin Liber Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Marking more std::string_view members noexcept Date: Wed, 25 Oct 2017 20:51:43 -0500 Lines: 78 Approved: news@gmane.org Message-ID: References: <3d03cd7d-2177-98fd-408d-f74b1f6a8552@gmail.com> <79ff7517-9d44-4770-8124-a2a036a2e6be@isocpp.org> <5949784.ta64GYsRuq@tjmaciei-mobl1> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="001a114b6d0665b9ab055c696cf1" X-Trace: blaine.gmane.org 1508982764 18009 195.159.176.226 (26 Oct 2017 01:52:44 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 26 Oct 2017 01:52:44 +0000 (UTC) To: "std-proposals@isocpp.org" Original-X-From: std-proposals+bncBCE35H5S6IDBBWH7YTHQKGQEMR263PI@isocpp.org Thu Oct 26 03:52:39 2017 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-ua0-f200.google.com ([209.85.217.200]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e7XLG-00024J-Ln for gclcip-std-proposals@m.gmane.org; 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[209.85.220.41]) by mx.google.com with SMTPS id b37sor1580903uae.245.2017.10.25.18.52.24 for (Google Transport Security); Wed, 25 Oct 2017 18:52:24 -0700 (PDT) Received-SPF: pass (google.com: domain of nliber@gmail.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41; X-Received: by 10.159.41.65 with SMTP id t59mr2810353uat.99.1508982743479; Wed, 25 Oct 2017 18:52:23 -0700 (PDT) Original-Sender: nliber@gmail.com Original-Received: by 10.103.71.140 with HTTP; Wed, 25 Oct 2017 18:51:43 -0700 (PDT) In-Reply-To: X-Original-Sender: nevin@eviloverlord.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=tfzCEoLs; spf=pass (google.com: domain of nliber@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=nliber@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:35105 Archived-At: --001a114b6d0665b9ab055c696cf1 Content-Type: text/plain; charset="UTF-8" On Wed, Oct 25, 2017 at 7:17 PM, Nevin Liber wrote: > This constructor is unnecessary unless you want to differentiate between > C-string literals and raw pointers (which is a breaking change BTW). > Technically, it doesn't have to be a breaking change, as long as all it does is define behavior for: > const char s[] = { 'H', 'e', 'l', 'l', 'o' }; > string_view b(s); > > Right now: > > b.size() // UB > I don't see that as particularly useful. -- Nevin ":-)" Liber +1-847-691-1404 -- 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/CAGg_6%2BO%3DN_3nogd-RbCGbAXAyX00UxETAgH6hZ5eJZoEyV001w%40mail.gmail.com. --001a114b6d0665b9ab055c696cf1 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
On Wed, Oct 25, 2017 at 7:17 PM, Nevin Liber <nevin@= eviloverlord.com> wrote:
This constructor is unnecessary unle= ss you want to differentiate between C-string literals and raw pointers (wh= ich is a breaking change BTW).
Technically, it doesn't have to be a breaking change, as lo= ng as all it does is define behavior for:
=C2=A0
const char s[] =3D { 'H', 'e', 'l', 'l&#= 39;, 'o' };
string_view b(s);

Ri= ght now:

b.size() // UB

I don't see that as particularly useful.<= /div>
--=C2=A0
=C2=A0Nevin ":-)" Liber=C2=A0= <mailto:nev= in@eviloverlord.com> =C2=A0+1-847-691-1404

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