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=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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 3238CC43461 for ; Fri, 11 Sep 2020 16:26:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D1B2E206DB for ; Fri, 11 Sep 2020 16:26:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="WPC6+zJT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726537AbgIKQ0Q (ORCPT ); Fri, 11 Sep 2020 12:26:16 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:36686 "EHLO mx0b-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726405AbgIKPYF (ORCPT ); Fri, 11 Sep 2020 11:24:05 -0400 Received: from pps.filterd (m0127361.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 08BFDJlh138373; Fri, 11 Sep 2020 11:23:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=subject : to : cc : references : from : message-id : date : mime-version : in-reply-to : content-type : content-transfer-encoding; s=pp1; bh=IU/fKZKtEvfvRqnzr4y0McdxJCnTZkrOh7Gin8XqWlU=; b=WPC6+zJTaiPIgIkWddZOIIpPI/m+V3iwTn8whVN2764BdbiZOI2Y0vFsOhk/rmVY4Hxp 6QVRWMmVhcT59QBr/fTRaFdggXsUsBvmI1GwU7yv85YOz7+JB7/FTnOD0tF/f96GwHwf 59BxMkYvRyo2/5TLnXFhyHzY3B1AUUkypUVYD6B+u/G2x4k8VuhhSQDqf7DbMhTCkjik 7tCvh9oLjeju916t0WHfaDg4six8toC++6X1XcHybDQRfxZ35GgUb3dleaNbwBVddWOr Pk6kolI3YntgyZbsf4a3CkasG5Zx9Y4J5y5HHSB+LSb90gQxpu2z86frjDhza7TIQcwn tQ== Received: from ppma02fra.de.ibm.com (47.49.7a9f.ip4.static.sl-reverse.com [159.122.73.71]) by mx0a-001b2d01.pphosted.com with ESMTP id 33gbp9r78d-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 11 Sep 2020 11:23:48 -0400 Received: from pps.filterd (ppma02fra.de.ibm.com [127.0.0.1]) by ppma02fra.de.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 08BFD828025320; Fri, 11 Sep 2020 15:23:46 GMT Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by ppma02fra.de.ibm.com with ESMTP id 33c2a846bu-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 11 Sep 2020 15:23:46 +0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 08BFNiG337814770 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 11 Sep 2020 15:23:44 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 17CDD4C044; Fri, 11 Sep 2020 15:23:44 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id ABA384C050; Fri, 11 Sep 2020 15:23:43 +0000 (GMT) Received: from [9.145.176.58] (unknown [9.145.176.58]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 11 Sep 2020 15:23:43 +0000 (GMT) Subject: Re: [PATCH -rc v1] gcov: Disable gcov build with GCC 10 To: David Laight , "'Linus Torvalds'" Cc: Leon Romanovsky , Leon Romanovsky , Linux Kernel Mailing List , Colin Ian King , Andrew Morton References: <20200904155808.4997-1-leon@kernel.org> <6fac3754-f8db-85f5-bdb1-b4c8e7ccc046@linux.ibm.com> From: Peter Oberparleiter Message-ID: <0d45fd85-d109-b57f-d918-33d5991e2b09@linux.ibm.com> Date: Fri, 11 Sep 2020 17:23:44 +0200 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-09-11_05:2020-09-10,2020-09-11 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 clxscore=1011 lowpriorityscore=0 malwarescore=0 adultscore=0 phishscore=0 spamscore=0 impostorscore=0 mlxscore=0 suspectscore=1 mlxlogscore=917 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009110124 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10.09.2020 23:49, David Laight wrote: > I was wondering what happens if files compiled with different > versions of gcc get linked together? This is not supported by GCC. At runtime libgcov will reject all data from object files compiled with a different GCC version. -- Peter Oberparleiter Linux on Z Development - IBM Germany