From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D3EDCC54FC9 for ; Tue, 21 Apr 2020 14:46:44 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9E45120679 for ; Tue, 21 Apr 2020 14:46:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9E45120679 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:59326 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jQuAd-0002ps-HM for qemu-devel@archiver.kernel.org; Tue, 21 Apr 2020 10:46:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37548) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jQu9a-0001nh-Bz for qemu-devel@nongnu.org; Tue, 21 Apr 2020 10:45:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.90_1) (envelope-from ) id 1jQu9Z-000833-07 for qemu-devel@nongnu.org; Tue, 21 Apr 2020 10:45:38 -0400 Received: from indium.canonical.com ([91.189.90.7]:49236) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jQu9Y-000800-H5 for qemu-devel@nongnu.org; Tue, 21 Apr 2020 10:45:36 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1jQu9W-0006S7-Rb for ; Tue, 21 Apr 2020 14:45:34 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id CD8422E8104 for ; Tue, 21 Apr 2020 14:45:34 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Tue, 21 Apr 2020 14:36:11 -0000 From: Peter Maydell To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=New; importance=Undecided; assignee=None; X-Launchpad-Bug-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: mliska pmaydell X-Launchpad-Bug-Reporter: Martin Liska (mliska) X-Launchpad-Bug-Modifier: Peter Maydell (pmaydell) References: <158747496330.1952.6391008472811579405.malonedeb@chaenomeles.canonical.com> Message-Id: <158747977160.29151.17426970685106955445.malone@wampee.canonical.com> Subject: [Bug 1874073] Re: openrisc_sim.c:87:42: error: 'cpu_irqs[0]' may be used uninitialized in this function [-Werror=maybe-uninitialized] X-Launchpad-Message-Rationale: Subscriber (QEMU) @qemu-devel-ml X-Launchpad-Message-For: qemu-devel-ml Precedence: bulk X-Generated-By: Launchpad (canonical.com); Revision="aad6b57d58e2f621954298e262c1cc904860f5d2"; Instance="production-secrets-lazr.conf" X-Launchpad-Hash: 5b2d6e247c5aa6c7447b2e68ef326dae2ff78e63 Received-SPF: none client-ip=91.189.90.7; envelope-from=bounces@canonical.com; helo=indium.canonical.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/04/21 07:50:41 X-ACL-Warn: Detected OS = Linux 3.11 and newer X-Received-From: 91.189.90.7 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Bug 1874073 <1874073@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Does adding "assert(smp_cpus >=3D 1 && smp_cpus <=3D 2);" after the assignment to smp_cpus give the compiler enough information to know there's no use of uninitialized data? -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1874073 Title: openrisc_sim.c:87:42: error: 'cpu_irqs[0]' may be used uninitialized in this function [-Werror=3Dmaybe-uninitialized] Status in QEMU: New Bug description: I see the warning since gcc10: static void openrisc_sim_init(MachineState *machine): ... qemu_irq *cpu_irqs[2]; ... = serial_mm_init(get_system_memory(), 0x90000000, 0, serial_irq, 115200, serial_hd(0), DEVICE_NATIVE_ENDIAN); I would initialize cpu_irqs[2] with {}. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1874073/+subscriptions