From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10980 invoked by alias); 30 Jun 2017 08:33:58 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Received: (qmail 10962 invoked by uid 89); 30 Jun 2017 08:33:57 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy=51am, 51AM X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Fri, 30 Jun 2017 08:33:56 +0000 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CB3C480463; Fri, 30 Jun 2017 08:33:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com CB3C480463 Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=jakub@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com CB3C480463 Received: from tucnak.zalov.cz (ovpn-116-143.ams2.redhat.com [10.36.116.143]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 32BFB177ED; Fri, 30 Jun 2017 08:33:54 +0000 (UTC) Received: from tucnak.zalov.cz (localhost [127.0.0.1]) by tucnak.zalov.cz (8.15.2/8.15.2) with ESMTP id v5U8XpGE018393; Fri, 30 Jun 2017 10:33:51 +0200 Received: (from jakub@localhost) by tucnak.zalov.cz (8.15.2/8.15.2/Submit) id v5U8Xn0j018392; Fri, 30 Jun 2017 10:33:49 +0200 Date: Fri, 30 Jun 2017 08:33:00 -0000 From: Jakub Jelinek To: Richard Biener Cc: Jeff Law , Prathamesh Kulkarni , gcc Patches Subject: Re: PR80806 Message-ID: <20170630083349.GF2123@tucnak> Reply-To: Jakub Jelinek References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.7.1 (2016-10-04) X-IsSubscribed: yes X-SW-Source: 2017-06/txt/msg02359.txt.bz2 On Fri, Jun 30, 2017 at 10:25:51AM +0200, Richard Biener wrote: > Do not go down the route of -Wunreachable-code again please. Yeah, I don't think we want -Wunused-but-set* as a late warning, it is intentionally in the FE where is the only place where the false positive ratio of the warning can stay under control, and even then many projects like the Linux kernel turn the warning off. If we want to special case memset/memcpy dest arg for DECL_READ_P, let's do it, but in the FE only. Jakub