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=-6.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=ham 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 3F2DDC2D0CE for ; Tue, 21 Jan 2020 11:13:18 +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 0A51A2253D for ; Tue, 21 Jan 2020 11:13:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="PQNiJGg5" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0A51A2253D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:51882 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1itrTA-00066M-Og for qemu-devel@archiver.kernel.org; Tue, 21 Jan 2020 06:13:16 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:40520) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1itrLJ-0003hh-Jc for qemu-devel@nongnu.org; Tue, 21 Jan 2020 06:05:13 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1itrLE-0002fN-Ut for qemu-devel@nongnu.org; Tue, 21 Jan 2020 06:05:09 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:20570 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1itrLE-0002ev-Rm for qemu-devel@nongnu.org; Tue, 21 Jan 2020 06:05:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1579604704; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CleyiTyFzeU7YFGR9t8XlXBZmAxEriIlOMwBzucwkpQ=; b=PQNiJGg56cBkEdlMbT0/TTxIEFLYVPPfH7LLrc6jwIX/W5wRc1odh2xQyy27Q7fZ7p9dOZ GHW5xZ9h+t7N518HxKitLYHWJCfM107skk/p3Yxj8IGhaH6jPIF5RVwZnUgyOFOWqiAcWP OQVvwSpdHSCylTLIsDySH5KYBrMsst0= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-377-EdVqMcpMOy2sK8ntRqZvkQ-1; Tue, 21 Jan 2020 06:05:03 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 63E5B18A6EC1; Tue, 21 Jan 2020 11:05:01 +0000 (UTC) Received: from x1w.redhat.com (ovpn-205-38.brq.redhat.com [10.40.205.38]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 9A48C811F8; Tue, 21 Jan 2020 11:04:53 +0000 (UTC) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH v2 06/10] qom/object: Display more helpful message when a parent is missing Date: Tue, 21 Jan 2020 12:03:45 +0100 Message-Id: <20200121110349.25842-7-philmd@redhat.com> In-Reply-To: <20200121110349.25842-1-philmd@redhat.com> References: <20200121110349.25842-1-philmd@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-MC-Unique: EdVqMcpMOy2sK8ntRqZvkQ-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 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: Peter Maydell , Cornelia Huck , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Eduardo Habkost , Like Xu , David Hildenbrand , Marcelo Tosatti , Markus Armbruster , qemu-s390x@nongnu.org, qemu-arm@nongnu.org, qemu-ppc@nongnu.org, Paolo Bonzini , Richard Henderson , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , David Gibson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" QEMU object model is scarse in documentation. Some calls are recursive, and it might be hard to figure out even trivial issues. We can avoid developers to waste time in a debugging session by displaying a simple error message. This commit is also similar to e02bdf1cecd2 ("Display more helpful message when an object type is missing"). Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- v2: New patch --- qom/object.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/qom/object.c b/qom/object.c index 0d971ca897..bc13a55094 100644 --- a/qom/object.c +++ b/qom/object.c @@ -173,7 +173,11 @@ static TypeImpl *type_get_parent(TypeImpl *type) { if (!type->parent_type && type->parent) { type->parent_type =3D type_get_by_name(type->parent); - g_assert(type->parent_type !=3D NULL); + if (!type->parent_type) { + fprintf(stderr, "Object '%s' missing its parent '%s'\n", + type->name, type->parent); + abort(); + } } =20 return type->parent_type; --=20 2.21.1