220 29087 article Path: news.gmane.org!.POSTED!not-for-mail From: "T. C." Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Removing trivial undefined behaviour Date: Wed, 26 Oct 2016 01:28:37 -0700 (PDT) Lines: 76 Approved: news@gmane.org Message-ID: References: <35daf87a-bf1d-46de-b16c-c2965fbadc8f@isocpp.org> <9e242562-aba1-4f8d-8e0a-b2de34f6a10b@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_1162_775423578.1477470517220" X-Trace: blaine.gmane.org 1477470552 27473 195.159.176.226 (26 Oct 2016 08:29:12 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 26 Oct 2016 08:29:12 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBCQ43G7NQIIRBNWSYHAAKGQEC3UDUXQ@isocpp.org Wed Oct 26 10:29:04 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-oi0-f71.google.com ([209.85.218.71]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bzJZi-0003GC-51 for gclcip-std-proposals@m.gmane.org; Wed, 26 Oct 2016 10:28:42 +0200 Original-Received: by mail-oi0-f71.google.com with SMTP id f78sf14641214oih.7 for ; Wed, 26 Oct 2016 01:28:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=HXqZeBFaG5w2Ve282CMdxliJfu0E9ZOzuiFpIuvGO4s=; b=Efya5W53OAltWAbM8AG+tBGPuaNsdVQgnlsXKURFWkTu4whMvCIzPcIt/PkOFjVN3c HLBv9f95TZQbQeVomveXBKOHhYKRa6UX4qFBREDLmGIEV4VnIhAO+0Ayzv3l51tiOH2t BSEYl/HKax+mw0YWqYxZ3pEh3ZofOVA8ZyX5Mbhypo3mtDUQYVXF8dtzkvRBwuzp/ahl S/UeF/U/EyjtRU2kwKYGeUY3sfGbjw+zyCsnsVWlX22e0JchwnikTfVZr8H/EKnPeCHU oze8w92zi0+mfsn1KG9Ea7U6xw28s50JQZXb6ALL8lILZH75DmsWyzxegV2hrXNLXayB 3xWA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=HXqZeBFaG5w2Ve282CMdxliJfu0E9ZOzuiFpIuvGO4s=; b=FQGc6+Z4Aqbj6V+z/X9lVKJkcAHwprOMQWqdgExnSBtNlL7fOLJN9Y0QdlT8RZUyhg Y4BLn0B+M+b3PMmTSSSq5/OXRgnLCYZDiszOC3eLnUQT2kvtek3gdJHcua3RxuU6LJU+ OyyJ50qi301VY78lVZ47LdbHMfeMmEzUWiTyoUatn+mQNGDAvN2IbEMTUHjjMChBXMYn T29sP/F6ezwyp5yYVU+HHYdk7RwSlKLjq5B299wmZ/deLcB4rGCYmEi/grv4Oz+1EvuB Zrb7fA0LsQFd9MdmCp5SuSYGkBpFKdVydfuzimdbZSciT0Z3wN2UuJ0HSYL5opVjtIl2 WSLg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:message-id:in-reply-to:references :subject:mime-version:x-original-sender:reply-to:precedence :mailing-list:list-id:x-spam-checked-in-group:list-post:list-help :list-archive:list-subscribe:list-unsubscribe; bh=HXqZeBFaG5w2Ve282CMdxliJfu0E9ZOzuiFpIuvGO4s=; b=fJTRZ6M5GcbejvdeaWbGO3Xsk23kCWUWm9TkFFGU6/5MVJH2fr5DbMVZv+14Axttbq oz6kt+9C5jf86SfkJMUhbHnO5emn+GqBgaSjaUwzKPY06/wRwpMn3xJqTY2BaVWGTlpm Oi3XdSSY0hJgTt+cKxXchDXVYclaXBjNdwLNmmJWeMNSs0elCfMBreBg0cbtZLNbaph4 3gOLXaMepBllhYH04stG3Jd86RwBtSX+Pt1MKbXZLsE/KfKj8Gcj7uYVlefoLonuqq6Z AHfxLW6S/vwS1WHszl+FfJeyFmPvJy6+WMAvws/Ysk/ZqHBjFhthnG1PfoByRVWOOq4r /7oQ== X-Gm-Message-State: ABUngvc3IcqKzxZ5OJXIRxnqqWt56yb47Np0XnbyRq1j7F+OFsB6Ty51vM+kdpVkRUW6sQ== X-Received: by 10.157.38.146 with SMTP id l18mr292741otb.50.1477470519278; Wed, 26 Oct 2016 01:28:39 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.36.196.193 with SMTP id v184ls325443itf.6.gmail; Wed, 26 Oct 2016 01:28:38 -0700 (PDT) X-Received: by 10.36.110.149 with SMTP id w143mr42645itc.9.1477470518332; Wed, 26 Oct 2016 01:28:38 -0700 (PDT) In-Reply-To: X-Original-Sender: rs2740@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:29087 Archived-At: ------=_Part_1162_775423578.1477470517220 Content-Type: multipart/alternative; boundary="----=_Part_1163_228402737.1477470517220" ------=_Part_1163_228402737.1477470517220 Content-Type: text/plain; charset=UTF-8 On Wednesday, October 26, 2016 at 3:20:55 AM UTC-4, Hans Guijt wrote: > > > On Wednesday, October 26, 2016 at 9:11:26 AM UTC+2, T. C. wrote: >> >> >> Because they are meant to be used as isdigit((unsigned char) c). >> > > Great, in that case I'm sure there is no opposition to changing the > signature to reflect this requirement? It's a much cleaner solution than > requiring a cast in every invocation, after all. > > > The reason they take int is because they also accept EOF. That's C's style, for better or worse. In any event, there's no way in hell C++ is going to change this. It's a massive C compatibility break. -- 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/c976d139-ae31-4756-96a6-30a69d81f14d%40isocpp.org. ------=_Part_1163_228402737.1477470517220 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable


On Wednesday, October 26, 2016 at 3:20:55 AM UTC-4= , Hans Guijt wrote:

On Wednesday, October 26, 2016 at 9:11:26 AM UTC+2, T. C. wrote:<= blockquote class=3D"gmail_quote" style=3D"margin:0;margin-left:0.8ex;border= -left:1px #ccc solid;padding-left:1ex">

Because they are meant to be used as isdigit((unsigned char) c).
=C2=A0
Great, in that case I'm sure there= is no opposition to changing the signature to reflect this requirement? It= 's a much cleaner solution than requiring a cast in every invocation, a= fter all.



The reaso= n they take int is because they also accept EOF. That's C's style, = for better or worse.

In any event, there's no = way in hell C++ is going to change this. It's a massive C compatibility= break.

--
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