From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 72959 invoked by alias); 6 Mar 2015 09:47:07 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 72909 invoked by uid 48); 6 Mar 2015 09:47:03 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/65120] [5 Regression] Wlogical-not-parentheses should not warn about double exclamation !! Date: Fri, 06 Mar 2015 09:47:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 5.0 X-Bugzilla-Keywords: diagnostic X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: jakub at gcc dot gnu.org X-Bugzilla-Target-Milestone: 5.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-03/txt/msg00694.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65120 --- Comment #10 from Richard Biener --- It was just noted that "But then again (!a == 0) is the same as !(a == 0), so the warning is pretty pointless when the right side is constant zero." so we should probably not warn for this case either.