From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752241AbaGJLDR (ORCPT ); Thu, 10 Jul 2014 07:03:17 -0400 Received: from cpsmtpb-ews02.kpnxchange.com ([213.75.39.5]:50048 "EHLO cpsmtpb-ews02.kpnxchange.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751279AbaGJLDQ (ORCPT ); Thu, 10 Jul 2014 07:03:16 -0400 Message-ID: <1404990194.19776.5.camel@x220> Subject: Re: [PATCH] Kbuild: Move -Wmaybe-uninitialized to W=1 From: Paul Bolle To: Borislav Petkov Cc: linux-kbuild@vger.kernel.org, Sam Ravnborg , lkml , Michael Matz , x86-ml Date: Thu, 10 Jul 2014 13:03:14 +0200 In-Reply-To: <20140710104223.GD2970@pd.tnic> References: <20140616132045.GE8170@pd.tnic> <20140616211405.GA7914@ravnborg.org> <20140624213835.GD15068@pd.tnic> <20140707105339.GA4776@pd.tnic> <1404811520.26126.38.camel@x220> <20140708113724.GA27659@pd.tnic> <20140710104223.GD2970@pd.tnic> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.4 (3.10.4-2.fc20) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 10 Jul 2014 11:03:14.0518 (UTC) FILETIME=[8BD0CF60:01CF9C2E] X-RcptDomain: vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2014-07-10 at 12:42 +0200, Borislav Petkov wrote: > I haven't even wished for it but just to prove everybody my point: just > built rc4+ from Linus' repo with gcc 4.9.0, see below. > > Now all of a sudden there's more noise, maybe because this is a > different .config. However, I doubt those are real bugs. Would you mind sharing that .config? > A cursory look through those shows that they're not really bugs - > gcc simply can't know with all the ifdeffery, partial usage based on Nit: I'd expect ifdeffery to make the code only difficult to understand for the human reader. By the time gcc will be doing flow analysis the preprocessor has long handled all ifdeffery. > conditionals, etc, etc. Thanks, Paul Bolle