220 11484 <349eba3f-0165-477b-bb4a-9aa5fc685af3@isocpp.org> article Path: news.gmane.org!not-for-mail From: Stack Machine Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Controversy and debate: Uninitialized variables by default is a bug Date: Tue, 17 Jun 2014 09:05:16 -0700 (PDT) Lines: 71 Approved: news@gmane.org Message-ID: <349eba3f-0165-477b-bb4a-9aa5fc685af3@isocpp.org> References: <60caa4ef-b32d-40fe-97b6-8918fbb2bd51@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_211_3110880.1403021116359" X-Trace: ger.gmane.org 1403021129 11958 80.91.229.3 (17 Jun 2014 16:05:29 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 17 Jun 2014 16:05:29 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDC7BQ4GSIMRBPOOQGOQKGQET76OLDI@isocpp.org Tue Jun 17 18:05:19 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-ie0-f200.google.com ([209.85.223.200]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Wwvst-0000rJ-5f for gclcip-std-proposals@m.gmane.org; Tue, 17 Jun 2014 18:05:19 +0200 Original-Received: by mail-ie0-f200.google.com with SMTP id tr6sf42973237ieb.11 for ; Tue, 17 Jun 2014 09:05:18 -0700 (PDT) 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:list-post:list-help:list-archive :list-subscribe:list-unsubscribe:content-type; bh=vWLpOL2VtsEBNkcBYX20nn53vAEbDcvDBaBMepbmASc=; b=G0N3ee7JtX0s6eDCYN9y5/3Iaui4UT4B2BfnDM1L/maFi9hqfuYUFpdHJuqPtpMgXz u8oMNHyWWCe9y+LHX0RHpPneAL6c16yCYFf/Le9YTBzzHdAoH9eoRoll2S2YpQKoBalQ skidQ+866Wt/2Iz5Y7zYlEEchAdKnaqa5q4TTo76uAOiPZ0YKtUA9RIPfDwmjxzonMnk XBrMPBN4ycDbHrQLavQphJbJcfEK+Bg6IA/sVW9FoCD7p69f7z+47n2seLgSAYjRMmX3 7RfVKQnbea9+uW06FwdOMTaaozxlNtsCR92HVT5pW8N9vVIP0HzHYNUTnXJbvdRfKwnX nDGg== X-Gm-Message-State: ALoCoQnIJ8i/2+zK1e3WN+a+mucg3lLHJKQLhC23KREX63Oi7f3nEoGfge7vxV51iM3WQusMJ4wb X-Received: by 10.50.56.74 with SMTP id y10mr662110igp.3.1403021118244; Tue, 17 Jun 2014 09:05:18 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.140.88.80 with SMTP id s74ls593013qgd.50.gmail; Tue, 17 Jun 2014 09:05:17 -0700 (PDT) X-Received: by 10.140.29.4 with SMTP id a4mr30376qga.29.1403021117575; Tue, 17 Jun 2014 09:05:17 -0700 (PDT) In-Reply-To: <60caa4ef-b32d-40fe-97b6-8918fbb2bd51@isocpp.org> X-Original-Sender: stackmachine@hotmail.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:11484 Archived-At: ------=_Part_211_3110880.1403021116359 Content-Type: text/plain; charset=UTF-8 I think that both sides have some compelling arguments. How about this: int i; // compiletime error: no initializer int i = 0; // initialize to 0 int i = void; // ok, explicitly uninitialized Yes, this does break backwards compatibility, but in a way that produces a compiletime error. Conversion tools shouldn't be too hard to write either. -- --- 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/. ------=_Part_211_3110880.1403021116359 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
I think that both sides have some compelling arguments. Ho= w about this:
int i= ; // compiletime error: no ini= tializerint i =3D 0; // initialize to 0
int i = =3D void; // ok, explicitly uninitialized
Yes, this does break backwards compatibility, but in a way that = produces a compiletime error. Conversion tools shouldn't be too hard to wri= te either.

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