From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 120587 invoked by alias); 27 Apr 2018 20:24:31 -0000 Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org Received: (qmail 120399 invoked by uid 89); 27 Apr 2018 20:24:06 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-3.0 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy=HContent-Transfer-Encoding:8bit X-HELO: mx1.redhat.com Received: from mx3-rdu2.redhat.com (HELO mx1.redhat.com) (66.187.233.73) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Fri, 27 Apr 2018 20:24:05 +0000 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id EF26EEC00F; Fri, 27 Apr 2018 20:24:03 +0000 (UTC) Received: from [127.0.0.1] (ovpn04.gateway.prod.ext.ams2.redhat.com [10.39.146.4]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5696D10F1BE0; Fri, 27 Apr 2018 20:24:03 +0000 (UTC) Subject: Re: GDB 8.1 build error To: Simon Marchi References: <214C80CC-1173-41F6-AAA1-39C9D39E28B2@comcast.net> <454707570722fc0220074c0eca015a8f@polymtl.ca> <6171a043-e486-85ec-bdbb-2077a2b5ebd0@redhat.com> Cc: Paul Koning , gdb@sourceware.org From: Pedro Alves Message-ID: <9ed9617b-987e-3225-8518-a43eda0b5548@redhat.com> Date: Fri, 27 Apr 2018 20:41:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-SW-Source: 2018-04/txt/msg00036.txt.bz2 On 04/27/2018 09:16 PM, Simon Marchi wrote: > On clang at least, -Wnarrowing seems to generate an error by default, so -w doesn't affect it.  You get: > >   no flag: error >   -Wno-error=narrowing: warning >   -Wno-error=narrowing -w: silent > > So in this case, we would still need either -Wno-error=narrowing or -Wno-narrowing. > > We can test if gcc behaves the same, we just need something that is an error by default but we can downgrade to a warning.  Do you have an idea of such diagnostic? -Wnarrowing is on by default on gcc, and -w disables it. Thanks, Pedro Alves