220 11755 <2555993.7LIlHKVULI@tjmaciei-mobl4> article Path: news.gmane.org!not-for-mail From: Thiago Macieira Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: N4078: Rvalue reference overloads for value() method returns object by value Date: Wed, 09 Jul 2014 13:03:08 -0700 Lines: 22 Approved: news@gmane.org Message-ID: <2555993.7LIlHKVULI@tjmaciei-mobl4> References: 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 1404936206 23111 80.91.229.3 (9 Jul 2014 20:03:26 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 9 Jul 2014 20:03:26 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCB4TK757YBRB75762OQKGQECG7LJFI@isocpp.org Wed Jul 09 22:03:20 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-la0-f71.google.com ([209.85.215.71]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1X4y5B-0005QY-9c for gclcip-std-proposals@m.gmane.org; Wed, 09 Jul 2014 22:03:13 +0200 Original-Received: by mail-la0-f71.google.com with SMTP id el20sf4887701lab.10 for ; Wed, 09 Jul 2014 13:03:12 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:subject:date:message-id:user-agent :in-reply-to:references:mime-version:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe:content-type; bh=STY+ObWdCT+wIGLH79m8DLQcAv606Plq/X3yGnsQQoI=; b=i6mbJZMbiwrCVKdmH/6qI4xWNcvvRKhBVboH93u3UVIv84QrCPodVm+LPdhFb0xGdz YwJ+lWq2k3u1z7dG+gDZY7VhEZHzHt86Nwa8psZOl0fLajIxgVz+WI0U+jSdZjhmOqVb iY3pkJRdNrNRXSpqGKpUQ9FvUmC4SW61PowO8sD5uZjiASdmOgshKB5LWeEPbe+V8Euq W0Mjifkmiktq5Vhr1Tu2OPBOVyrR36ikrFhTJzxv4K9GriCpGtvi/bC5GtP/sdlmU9nJ U+Y+ThaCxLCTu9LUbguUJTdB1jRu7hnQdzuTNcoRJuD3kgHjpBH0WPh5nSktMfyDQzvI iLNQ== X-Gm-Message-State: ALoCoQmDOURrBuUbK95/9B81zUOr5OOJT4091K6/PfdS226wa7vUbU19uJOhujiawb83BHaJHQ3d X-Received: by 10.112.145.233 with SMTP id sx9mr4535649lbb.2.1404936192839; Wed, 09 Jul 2014 13:03:12 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.180.10.73 with SMTP id g9ls168503wib.14.gmail; Wed, 09 Jul 2014 13:03:11 -0700 (PDT) X-Received: by 10.194.184.200 with SMTP id ew8mr17734247wjc.61.1404936191582; Wed, 09 Jul 2014 13:03:11 -0700 (PDT) Original-Received: from gondolin.macieira.info (gondolin.macieira.info. [78.47.120.188]) by mx.google.com with ESMTP id ev7si9484286wic.48.2014.07.09.13.03.11 for ; Wed, 09 Jul 2014 13:03:11 -0700 (PDT) Received-SPF: pass (google.com: domain of thiago@macieira.org designates 78.47.120.188 as permitted sender) client-ip=78.47.120.188; Original-Received: from tjmaciei-mobl4.localnet (jfdmzpr06-ext.jf.intel.com [134.134.137.75]) by gondolin.macieira.info (Postfix) with ESMTPSA id E9FC911B3DD for ; Wed, 9 Jul 2014 13:03:10 -0700 (PDT) User-Agent: KMail/4.13 (Linux/3.11.10-17-desktop; KDE/4.13.0; x86_64; ; ) In-Reply-To: X-Original-Sender: thiago@macieira.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of thiago@macieira.org designates 78.47.120.188 as permitted sender) smtp.mail=thiago@macieira.org 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:11755 Archived-At: On Wednesday 09 July 2014 12:09:14 'Jeffrey Yasskin' via ISO C++ Standard - Future Proposals wrote: > std::pair g(); > auto&& s = g().first; //will create a dangling reference If you were to use auto or decltype(auto), the problem would go away, wouldn't it? -- Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org Software Architect - Intel Open Source Technology Center PGP/GPG: 0x6EF45358; fingerprint: E067 918B B660 DBD1 105C 966C 33F5 F005 6EF4 5358 -- --- 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/. .