220 5029 article Path: news.gmane.org!not-for-mail From: tomaszkam@gmail.com Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Require that this should be always caputred by copy. Date: Thu, 13 Jun 2013 22:41:58 -0700 (PDT) Lines: 62 Approved: news@gmane.org Message-ID: References: <51bf2631-aed7-4433-b16d-15ee15e87f29@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_345_6933156.1371188518509" X-Trace: ger.gmane.org 1371188521 32281 80.91.229.3 (14 Jun 2013 05:42:01 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 14 Jun 2013 05:42:01 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDNPVXXG6IGBBJ625KGQKGQE2G2OUMQ@isocpp.org Fri Jun 14 07:42:02 2013 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-yh0-f70.google.com ([209.85.213.70]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1UnMlt-0000JL-6N for gclcip-std-proposals@m.gmane.org; Fri, 14 Jun 2013 07:42:01 +0200 Original-Received: by mail-yh0-f70.google.com with SMTP id l109sf212512yhq.5 for ; Thu, 13 Jun 2013 22:42:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-beenthere:date:from:to:message-id:in-reply-to:references:subject :mime-version:x-original-sender:reply-to:precedence:mailing-list :list-id:x-google-group-id:list-post:list-help:list-archive :list-subscribe:list-unsubscribe:content-type; bh=wCUTBL9C8e+iWNlNCsGHDNSA6J8fXab4mG+92ggsLFc=; b=vJ3KgPAPFc/668AWRUAHDTVYAaJUzljfkXI6AzOU504hmlzdpoX/fdvCUBG62UZw4e YmWZz7DKZQ9IYsro4bxua4u1Jr3fudB2G294rHb+4KjOH/0EvGX5ZZzH62isonaKOuMr Q1d43l0rkNBl1tum264j3v7kOxm5g4bS05npy/4aG6FnVb/7TIk2dp3+LjqJT9xPtKzR qDQRoI20Mmserf+9gNK+KOQiiRmJYQKOjyy5PkkSBHoygrHSkNlNj/ptEtaNjuCrpxDB i43BqqCNDnvBNuGsvh89yOatq0vowRDhOFI+y/ToLAgLRJ1PJMpGDIQ2a9g4z3BR3xZH qVgA== X-Received: by 10.224.42.141 with SMTP id s13mr472313qae.3.1371188520106; Thu, 13 Jun 2013 22:42:00 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.49.129.69 with SMTP id nu5ls73402qeb.88.gmail; Thu, 13 Jun 2013 22:41:59 -0700 (PDT) X-Received: by 10.49.35.195 with SMTP id k3mr14998qej.2.1371188519130; Thu, 13 Jun 2013 22:41:59 -0700 (PDT) In-Reply-To: X-Original-Sender: tomaszkam@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:5029 Archived-At: ------=_Part_345_6933156.1371188518509 Content-Type: text/plain; charset=ISO-8859-1 For may point of view standard is requiring the this to by captured by copy: *If this is captured, each odr-use of this is transformed into an access to the corresponding unnamed data member of the closure type, cast (5.4) to the type of this.* and *It is unspecified whether additional unnamed non-static data members are declared in the closure type for entities captured by reference.* While the statements about the type of capture, suggest that this is captured by reference if it is implicitly captured by [&], so I think that is a defect, and the wording should be changed to say explicitly that this is always captured by value. -- --- 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_345_6933156.1371188518509 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable For may point of view standard is requiring the this to by captured by copy= : If this is capture= d, each odr-use of this
is transformed into an access to the correspondi= ng unnamed data member of the closure type, cast (5.4)
to the type of th= is. and It is unspecifi= ed whether additional unnamed non-static data members are declared
in th= e closure type for entities captured by reference.=

While the statements about the type of capture, suggest that this i= s captured by reference if it is implicitly captured by [&], so  I= think that is a defect, and the wording
should be changed to say explic= itly that this is always captured by value.

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