From nobody Mon Feb 9 00:02:28 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; 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; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1587657961; cv=none; d=zohomail.com; s=zohoarc; b=Dqeeu/r5Qj/ZuM8DrnwcYWRc009dZ3p/pB5toJBQa1aB0uggjKESlZxYnTxOh1JoNUfEIeUvTjO7ZPz0I+PqTc8yqvrGxoYMoNRNT5oU0ZbMl59sZ2uKbh9Sit/x/Hr9+77tS/MDJUtFsnUb6RxvnFQubzAPEQT5l0dnco+O+3I= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1587657961; 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=pb2YwYl+OshYLE4cqDBEMddewQ6UTsV7BX3WUShSshU=; b=bl8Z+UhxqNTK3RL2v2Bih2B+YqILFOSNNSWIBbQ6msaJ6dNd3RLFB5LenQByxKi5EZig6W6TYBcP1BfMAtj6J7gJktnD5ONOlnElvBcSEY54Rc/ODf45V7qcYhEY/K1PKw3Jmu6Yxpo419/Nv8cKqlXs7DfEvAeVXWEeFpd9xVc= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; 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; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1587657961384309.0849635236515; Thu, 23 Apr 2020 09:06:01 -0700 (PDT) Received: from localhost ([::1]:57888 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jReMQ-00040h-8D for importer@patchew.org; Thu, 23 Apr 2020 12:05:58 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59954) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jReHq-00068y-1O for qemu-devel@nongnu.org; Thu, 23 Apr 2020 12:01:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.90_1) (envelope-from ) id 1jReHa-0002D1-DA for qemu-devel@nongnu.org; Thu, 23 Apr 2020 12:01:13 -0400 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:25251 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jReHT-00022r-Ch for qemu-devel@nongnu.org; Thu, 23 Apr 2020 12:00:55 -0400 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-414-jvONd2-XMIuTYNpz9QwmrA-1; Thu, 23 Apr 2020 12:00:43 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 3C91CA0C19; Thu, 23 Apr 2020 16:00:41 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-113-6.ams2.redhat.com [10.36.113.6]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 853ED6060D; Thu, 23 Apr 2020 16:00:39 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 76E8E11358C7; Thu, 23 Apr 2020 18:00:36 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1587657648; 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=pb2YwYl+OshYLE4cqDBEMddewQ6UTsV7BX3WUShSshU=; b=OFtjlD4Ua194FKCdC+KnDZzIuLw/TRcNhBuSwdU2uPrltPRCH4TjX7x4MHXRs9tGjfxsDU G4kE1o27GF9Y/50uhorLTc4Gnbe9TOs8CMd7ymDE2cC8duUXyp/RRE6kSvhEGeQfbj/9rd 8BbW5tX/gUcw1pE8crNUI2hk4kkNflo= X-MC-Unique: jvONd2-XMIuTYNpz9QwmrA-1 From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PATCH 11/13] qapi: Assert non-input visitors see only valid alternate tags Date: Thu, 23 Apr 2020 18:00:34 +0200 Message-Id: <20200423160036.7048-12-armbru@redhat.com> In-Reply-To: <20200423160036.7048-1-armbru@redhat.com> References: <20200423160036.7048-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable 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=205.139.110.61; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/04/23 03:23:21 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.61 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: mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" An alternate type's visit_type_FOO() fails when it runs into an invalid ->type. This is appropriate with an input visitor: visit_start_alternate() sets ->type according to the input, and bad input can lead to bad ->type. It should never happen with an output, clone or dealloc visitor: if it did, the alternate being output, cloned or deallocated would be messed up beyond repair. Assert that. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- scripts/qapi/visit.py | 1 + 1 file changed, 1 insertion(+) diff --git a/scripts/qapi/visit.py b/scripts/qapi/visit.py index 3b28ba93f3..99b73eb7c1 100644 --- a/scripts/qapi/visit.py +++ b/scripts/qapi/visit.py @@ -232,6 +232,7 @@ void visit_type_%(c_name)s(Visitor *v, const char *name= , %(c_name)s **obj, Error case QTYPE_NONE: abort(); default: + assert(visit_is_input(v)); error_setg(&err, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", "%(name)s"); } --=20 2.21.1