Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751574AbaBZBSf (ORCPT ); Tue, 25 Feb 2014 20:18:35 -0500 Received: from mx1.redhat.com ([209.132.183.28]:64454 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750724AbaBZBSd (ORCPT ); Tue, 25 Feb 2014 20:18:33 -0500 Date: Tue, 25 Feb 2014 20:17:37 -0500 From: Dave Jones To: behanw@converseincode.com Cc: mmarek@suse.cz, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, sparse@chrisli.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sparse@vger.kernel.org, torvalds@linux-foundation.org, dwmw2@infradead.org, pageexec@freemail.hu, Jan-Simon =?iso-8859-1?Q?M=F6ller?= , Mark Charlebois Subject: Re: [PATCH 2/5] kbuild: LLVMLinux: Adapt warnings for compilation with clang Message-ID: <20140226011737.GA4564@redhat.com> Mail-Followup-To: Dave Jones , behanw@converseincode.com, mmarek@suse.cz, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, sparse@chrisli.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sparse@vger.kernel.org, torvalds@linux-foundation.org, dwmw2@infradead.org, pageexec@freemail.hu, Jan-Simon =?iso-8859-1?Q?M=F6ller?= , Mark Charlebois References: <1393376923-21892-1-git-send-email-behanw@converseincode.com> <1393376923-21892-3-git-send-email-behanw@converseincode.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1393376923-21892-3-git-send-email-behanw@converseincode.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 25, 2014 at 05:08:40PM -0800, behanw@converseincode.com wrote: > When compiling kernel with clang, disable warnings which are too noisy, and > add the clang flag catch-undefined-behavior. > > +# Clang > +warning-1 += $(call cc-disable-warning, initializer-overrides) > +warning-1 += $(call cc-disable-warning, unused-value) > +warning-1 += $(call cc-disable-warning, format) > +warning-1 += $(call cc-disable-warning, unknown-warning-option) > +warning-1 += $(call cc-disable-warning, self-assign) > +warning-1 += $(call cc-disable-warning, sign-compare) > +warning-1 += $(call cc-disable-warning, format-zero-length) > +warning-1 += $(call cc-disable-warning, uninitialized) > +warning-1 += $(call cc-option, -fcatch-undefined-behavior) Do you have a pointer to an example log-file from before this change ? I'm curious for eg, which self-assign warnings are showing up, because I've been fixing up the ones that Coverity found, of which there are only a dozen or so left iirc. Some of the others may also be interesting. Dave -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/