220 33525 <4126837.jZlGhgVnua@tjmaciei-mobl1> article Path: news.gmane.org!.POSTED!not-for-mail From: Thiago Macieira Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Catch block for multiple exceptions Date: Wed, 02 Aug 2017 00:12:40 -0700 Lines: 26 Approved: news@gmane.org Message-ID: <4126837.jZlGhgVnua@tjmaciei-mobl1> References: Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" X-Trace: blaine.gmane.org 1501657962 24447 195.159.176.226 (2 Aug 2017 07:12:42 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 2 Aug 2017 07:12:42 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCB4TK757YBRB27WQXGAKGQE5T2KOQQ@isocpp.org Wed Aug 02 09:12:38 2017 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-wr0-f197.google.com ([209.85.128.197]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dcnpd-000668-P9 for gclcip-std-proposals@m.gmane.org; Wed, 02 Aug 2017 09:12:37 +0200 Original-Received: by mail-wr0-f197.google.com with SMTP id z53sf4922539wrz.10 for ; Wed, 02 Aug 2017 00:12:44 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1501657964; cv=pass; d=google.com; s=arc-20160816; b=OJijDet0HjZLloeYgYwi8JXnibGm8oHGbrhtKuWhvMYk7pq+4zUdqN9mTpoWU9huZO k979sDkEGHdkl1mQrgciceq+AZ9hJzESzXaogz+718qquNssWwpMhLEvR/VdJXaYHNTZ RPlBSDz/wxDK5+rzF32oDTwS2DD4bxCjbBt3WePf5ppLq3BgHZpcLACTqvpjaCJJqLqX Kctd2qZI4CvaVA6L4punjGsxcujaF3lSjqGDH3yygtktAVIoZAws29l3S3xyN+SpyBaX UcA3wcvuBVlQOE5Ky7NKzgfYZO6S1BmcvurQ8VCcZhVecbr3w5mjvAkXYRRTrMDrsbOs zRgQ== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-unsubscribe:list-subscribe:list-archive:list-help:list-post :list-id:mailing-list:precedence:reply-to:mime-version:references :in-reply-to:message-id:date:subject:to:from :arc-authentication-results:arc-message-signature:dkim-signature :arc-authentication-results; bh=/OROc7FHdnB8zVct1ODpLBeQ+QiJRtIiSHNaBlQp6Uw=; b=t5xfNfChLmqdeSbiA+k3XFr66gtN1JwgfpIUA7znRVTcgviQDINAz8CXAM8SUws4Pg HIqNAyd7TkMzK/yn/RuNdu1D3IBJzeSfnb2daedIoLV3jMBwlL6NIHLUVEaKfIE9Yfkx qS+TT+87pGqAsi1bIgodrVfMw2qNMdUVCQmRwpCbZbQCikVep/4WJnqPA1DFzqBh6YoR O33YsJ/xniMf/9M3fiHYH2Ar3irCbIlFgEYfvUizFmJiPDW8saXZLuPAwR0ry2OFoTOw SjI4x1PTOydQ4Ay1Zlh6IfDj+1vFFoPW8s+NOD9lHU3S2/Q+WUfhGvt0lqzREFkQ3SO9 a6/g== ARC-Authentication-Results: i=2; mx.google.com; spf=pass (google.com: domain of thiago@macieira.org designates 78.47.120.188 as permitted sender) smtp.mailfrom=thiago@macieira.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=from:to:subject:date:message-id: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; bh=/OROc7FHdnB8zVct1ODpLBeQ+QiJRtIiSHNaBlQp6Uw=; b=F0xadVw7YS8YBxjRdF6VnCDhmAyIgmQTbmVq+pewLx11kNynNtAwg4w2xWHMSM6ZNb ZIIm2jgt3rcJ4qOktZgGwFeVUDOHGCiNsc/0zVTqE6v7WyGdx+qoUHgv5jmPOfq6VMZ3 Vm/sQkUDOW9oTUeBBOZbbmxWKPjSJ4jbiqmLhR38R94v9c7vQMC6q0JMFbi0sn/fNZOY gpk1DzcpnhCj5KvXacRgyMxeQSfoNgpq4eosJN7kJ+4XQt6mDLQjvosgrHLkx6SVDCpR 4Q4evLjmKuOJ5Q1eIe7bYWvHAgO4jcykle1qj29R2gPyj2m14Mzs/F4sl5OUU3uMXaPG kvCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=/OROc7FHdnB8zVct1ODpLBeQ+QiJRtIiSHNaBlQp6Uw=; b=ZonQy59infYAHTwrJHu551i0t4bNbthp5TCXaU4LZIB6Cq4x+qv89icfT69RSl4lfv zHSfKUNCDKGSt2zgj9cYKFkAEUxovKkl+WH8fHGkcHjhKOkK3jomnQiaswxSpH42BnOe dUiGPuDvq+O4ytVhbGk3EnBoJyIJRAgTOtOWLkKfzUShE4O6SDTmiiAI/LStBWUJraU/ 2upmexNDAdJRF/GRRDJ5GnWlfQmkJP6sdvh9qkEYIRLuenp+cqsC7LFg2B3YC6sXhyd1 XkPTDZ3Zs3AaZNab5+BsULcKaRueVGrTKxi3OU+tyx220GAIJuXgeHlSItqzteSGaLAE OM6Q== X-Gm-Message-State: AIVw1121/FH7HCRKuZQtfmxJi8c5oVL6oaIGOI/ph31pj7PPs0aOl1De JyMIEIlzrNddHVDx X-Received: by 10.223.171.166 with SMTP id s35mr1253108wrc.4.1501657964118; Wed, 02 Aug 2017 00:12:44 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.28.22.137 with SMTP id 131ls596565wmw.24.canary-gmail; Wed, 02 Aug 2017 00:12:42 -0700 (PDT) X-Received: by 10.28.69.215 with SMTP id l84mr2899664wmi.118.1501657962848; Wed, 02 Aug 2017 00:12:42 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1501657962; cv=none; d=google.com; s=arc-20160816; b=EwPaIyUZpWMapDlr8gE+TilJwUSKl9n8c5HtnE6N/n2pk4TgMzjxGR0m5r76I7xVhY hfqvY9MxxKxBMIwfHzkr+vH7Zd5PyPOjM5IyHrzXexqsW8q191OBYcXMYQq9CsfHOG8P vqXaURkXfHPEKkC54u2jEKt5iunOPP8eD7eeUwagnjw70F0HBo4pOwe4eksaX2MYxXi9 +GqDmFDUSZVjXFEZ5rNZLAYpDdmCU42VIpLms7cU7pSYMWbQaWzVIXiYgsYNNp9xD+zg quaZMkQvnN9oK9dopJaRG2gpH9lXT5lyv8VHK17q+WEr70JGEMEcjUBSfY5cq16RMQEm LW5Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:arc-authentication-results; bh=GQq0fH11GAJpbL0DyRgOZabdp6/wgL7Ft2cF9RXrO4c=; b=hy7blCcx8ySCNpXttwGCivRx8EMXHM3BJkSqLPB3TaMjPSkm5MviQqeRq03aFZIOjT woXG2sMCE4zsAbvB8R7OjNFvgJqnnV1KLVgZ93iSRQeFS3Aq4DNi3VQQ4+ItcanwEkyk X1kuJUHlqC6IKejdUaX7UreulN3x0ZHui/ek6QoekP44XrkegOHNL316CZWhZ416Svx3 FKWgfSY1MH6tcaLvNYCFB9V1bn/TUVd8izpSNEGJKcFNNglib0TwwV/gfca3cEW08uFa 4iwVKJlC2oOWMrU8SCGMHM294ST+eov+uGH3ZNq+JDFZG2WXwIYM16fOGGv19EaqtHT9 VPdg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of thiago@macieira.org designates 78.47.120.188 as permitted sender) smtp.mailfrom=thiago@macieira.org Original-Received: from gondolin.macieira.info (gondolin.macieira.info. [78.47.120.188]) by mx.google.com with ESMTP id y43si30916276wry.105.2017.08.02.00.12.42 for ; Wed, 02 Aug 2017 00:12:42 -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-mobl1.localnet (unknown [IPv6:2601:1c0:4501:5f9f:380f:dc65:1281:8c99]) by gondolin.macieira.info (Postfix) with ESMTPSA id D24A311B5B5 for ; Wed, 2 Aug 2017 00:12:41 -0700 (PDT) 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.mailfrom=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:33525 Archived-At: On Wednesday, 2 August 2017 00:04:35 PDT Dejan Milosavljevic wrote: > catch (exceptionA, exceptionB, exceptionC e) { > f(e); > } > > Questions: > > - How to know which exception invoke this catch? > - If catch was invoked by exceptionA what is the content of exceptionC? If we adopt this syntax, then the above cannot be well-formed: if catching multiple types, then no variable names must be specified. And how to know which one invoked? You don't. If you wanted to know if it was exceptionA, you'd add a catch block for it. -- Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org Software Architect - Intel Open Source Technology Center -- 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/4126837.jZlGhgVnua%40tjmaciei-mobl1. .