From nobody Tue Feb 10 04:55:15 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1604368639; cv=none; d=zohomail.com; s=zohoarc; b=d2yzEv4wC2rKXfx6N7jO6Tv9R7XtTZxtJibcxAzeYOjbYR/84sXLr0gh+MOzW8lIj7vzyhhXAFxagIA8w6yQ5SGd9v86AGFVMqQjgyLCJGY3mQ9fpZYcMC3oLJP8TtWHgvq7KV5kS4/VPKjbmSSDboKrP1IlnijDdOJF9fhVlJw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1604368639; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=izzImkMsBs0oC6+KaV/2S+ZtiKwcaiIZoZ0pmvFkbMQ=; b=hDRNDlTxLrI+23NMoyX3XYi+hlJuFzq7uQSu3S46W9TYR+Za4jOBLR0Qgvk//7TjKACbPGPWjvnyR39Efv4ocInOJp7iZWjnZk+UpfuppGeCo1ygA+UvO1DN8eZZ7ZnNAokKX3OaR8N/qceudN7kaNWOyNue+TOkBXV5JmeWbDQ= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1604368639166334.9938013721346; Mon, 2 Nov 2020 17:57:19 -0800 (PST) Received: from localhost ([::1]:53028 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kZlZR-0003vW-Oe for importer@patchew.org; Mon, 02 Nov 2020 20:57:13 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:59972) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kZlWn-000266-7g; Mon, 02 Nov 2020 20:54:29 -0500 Received: from szxga04-in.huawei.com ([45.249.212.190]:2382) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kZlVO-0001nj-QB; Mon, 02 Nov 2020 20:54:28 -0500 Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4CQCV010rPz15P8T; Tue, 3 Nov 2020 09:52:56 +0800 (CST) Received: from huawei.com (10.175.104.175) by DGGEMS410-HUB.china.huawei.com (10.3.19.210) with Microsoft SMTP Server id 14.3.487.0; Tue, 3 Nov 2020 09:52:50 +0800 From: Chen Qun To: , Subject: [PATCH 4/6] util/qemu-timer: fix uninitialized variable warning for expire_time Date: Tue, 3 Nov 2020 09:52:26 +0800 Message-ID: <20201103015228.2250547-5-kuhn.chenqun@huawei.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20201103015228.2250547-1-kuhn.chenqun@huawei.com> References: <20201103015228.2250547-1-kuhn.chenqun@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.175.104.175] X-CFilter-Loop: Reflected Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=45.249.212.190; envelope-from=kuhn.chenqun@huawei.com; helo=szxga04-in.huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/02 20:52:58 X-ACL-Warn: Detected OS = Linux 3.1-3.10 [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Chen Qun , Paolo Bonzini , zhang.zhanghailiang@huawei.com, ganqixin@huawei.com, Euler Robot Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" After the WITH_QEMU_LOCK_GUARD macro is added, the compiler cannot identify that the statements in the macro must be executed. As a result, some varia= bles assignment statements in the macro may be considered as unexecuted by the = compiler. The compiler showed warning: util/qemu-timer.c: In function =E2=80=98timerlist_expired=E2=80=99: util/qemu-timer.c:199:24: warning: =E2=80=98expire_time=E2=80=99 may be use= d uninitialized in this function [-Wmaybe-uninitialized] 199 | return expire_time <=3D qemu_clock_get_ns(timer_list->clock->typ= e); | ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ util/qemu-timer.c: In function =E2=80=98timerlist_deadline_ns=E2=80=99: util/qemu-timer.c:237:11: warning: =E2=80=98expire_time=E2=80=99 may be use= d uninitialized in this function [-Wmaybe-uninitialized] 237 | delta =3D expire_time - qemu_clock_get_ns(timer_list->clock->typ= e); | ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Add a default value for 'expire_time' to prevented the warning. Reported-by: Euler Robot Signed-off-by: Chen Qun --- Cc: Paolo Bonzini --- util/qemu-timer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/util/qemu-timer.c b/util/qemu-timer.c index 8b73882fbb..3910003e86 100644 --- a/util/qemu-timer.c +++ b/util/qemu-timer.c @@ -183,7 +183,7 @@ bool qemu_clock_has_timers(QEMUClockType type) =20 bool timerlist_expired(QEMUTimerList *timer_list) { - int64_t expire_time; + int64_t expire_time =3D -1; =20 if (!qatomic_read(&timer_list->active_timers)) { return false; @@ -213,7 +213,7 @@ bool qemu_clock_expired(QEMUClockType type) int64_t timerlist_deadline_ns(QEMUTimerList *timer_list) { int64_t delta; - int64_t expire_time; + int64_t expire_time =3D -1; =20 if (!qatomic_read(&timer_list->active_timers)) { return -1; --=20 2.27.0