Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4F400C05027 for ; Wed, 8 Feb 2023 20:16:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232043AbjBHUQW (ORCPT ); Wed, 8 Feb 2023 15:16:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231367AbjBHUQU (ORCPT ); Wed, 8 Feb 2023 15:16:20 -0500 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 30AC5BB91; Wed, 8 Feb 2023 12:16:19 -0800 (PST) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id BEFE22072F; Wed, 8 Feb 2023 20:16:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1675887377; h=from:from:reply-to:reply-to:date:date:message-id:message-id:to:to: cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=38eF0iECejPU1a+Mp9LNCQL5AtFm/MRsX4YHeT+eHjQ=; b=OTKBCKRZ0paCbhC5M7ppg5l7EieTxW6EO6FOfgXB7EfQpHMjl2O1cwFlpYWiZ6CXK80DHV HcIC9wmYQn4+1SMUmRVqdAjbbp8bzopce29yVcPX8TyttLWM+Om9ToVFAtwSpoHstFy1IS Uqk36Oj1eawOpAT7RyMQ8KJfxjupOZw= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1675887377; h=from:from:reply-to:reply-to:date:date:message-id:message-id:to:to: cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=38eF0iECejPU1a+Mp9LNCQL5AtFm/MRsX4YHeT+eHjQ=; b=AFiLHQGaQps31IHCAoJ0eIQqaZXKLlh6YfHwRpnwzIKgm+q0JaeY93T8UUWA6tIJ2QUzxD 4SYyJuE/6wXAGPBw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 9316D1358A; Wed, 8 Feb 2023 20:16:17 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id oML6IhED5GNNLAAAMHmgww (envelope-from ); Wed, 08 Feb 2023 20:16:17 +0000 Date: Wed, 8 Feb 2023 21:10:28 +0100 From: David Sterba To: ye.xingchen@zte.com.cn Cc: clm@fb.com, josef@toxicpanda.com, dsterba@suse.com, linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] Btrfs: fix compile error about uninitialized variable Message-ID: <20230208201028.GK28288@twin.jikos.cz> Reply-To: dsterba@suse.cz References: <202302011022199155711@zte.com.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202302011022199155711@zte.com.cn> User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 01, 2023 at 10:22:19AM +0800, ye.xingchen@zte.com.cn wrote: > From: Minghao Chi > > fs/btrfs/tree-log.c:6166:6: note: 'last_range_start' was declared here > fs/btrfs/volumes.c:2598:27: note: 'seed_devices' was declared here > fs/btrfs/send.c:1909:13: error: 'right_gen' may be used uninitialized in this function [-Werror=maybe-uninitialized] We have the warning -Wmaybe-uninitialized enabled locally for fs/btrfs/ and no pending compiler warnings but in case you find something please tell us which compiler and version it is. Sometimes it makes sense to fix warnings for older yet still widely used versions.