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[23.128.96.18]) by mx.google.com with ESMTP id l12si3269064edi.290.2021.03.24.19.44.50; Wed, 24 Mar 2021 19:45:12 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232860AbhCXJ5y (ORCPT + 99 others); Wed, 24 Mar 2021 05:57:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47172 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235305AbhCXJ5j (ORCPT ); Wed, 24 Mar 2021 05:57:39 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 67C73C061763 for ; Wed, 24 Mar 2021 02:57:39 -0700 (PDT) Received: from gallifrey.ext.pengutronix.de ([2001:67c:670:201:5054:ff:fe8d:eefb] helo=bjornoya.blackshift.org) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lP0GX-0005Cl-5x; Wed, 24 Mar 2021 10:57:29 +0100 Received: from pengutronix.de (unknown [IPv6:2a03:f580:87bc:d400:ac2f:839b:d9d7:b2c1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) (Authenticated sender: mkl-all@blackshift.org) by smtp.blackshift.org (Postfix) with ESMTPSA id 078375FED4F; Wed, 24 Mar 2021 09:57:25 +0000 (UTC) Date: Wed, 24 Mar 2021 10:57:25 +0100 From: Marc Kleine-Budde To: Oliver Hartkopp Cc: Rasmus Villemoes , Rong Chen , Patrick Menschel , kernel test robot , kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, linux-can Subject: Re: [kbuild-all] Re: include/linux/compiler_types.h:315:38: error: call to '__compiletime_assert_536' declared with attribute error: BUILD_BUG_ON failed: offsetof(struct can_frame, len) != offsetof(struct canfd_frame, len) || offsetof(struct can_frame, data) != offsetof(struc... Message-ID: <20210324095725.ro5zs2qnmhemzvts@pengutronix.de> References: <20210323073437.yo63wreqnubbeqby@pengutronix.de> <7ff6bfd3-6b4b-045a-abb7-485927909587@hartkopp.net> <080d9e5c-fe1f-4a64-2938-8ca6d8a98d78@hartkopp.net> <0a8e8e95-c1a2-ede6-9f87-1ab7a0a155e3@rasmusvillemoes.dk> <212c8bc3-89f9-9c33-ed1b-b50ac04e7532@hartkopp.net> <1a6dd272-8bc2-57dc-5592-47a08493193a@rasmusvillemoes.dk> <2c82ec23-3551-61b5-1bd8-178c3407ee83@hartkopp.net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="ek6ltibujq7z5ejj" Content-Disposition: inline In-Reply-To: <2c82ec23-3551-61b5-1bd8-178c3407ee83@hartkopp.net> X-SA-Exim-Connect-IP: 2001:67c:670:201:5054:ff:fe8d:eefb X-SA-Exim-Mail-From: mkl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --ek6ltibujq7z5ejj Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 24.03.2021 10:09:22, Oliver Hartkopp wrote: > @Marc: Looks like we can not get around the __packed() fix :-( >=20 > At least we now have some more documentation to be referenced and I would > suggest to point out that some compilers handle the union alignment like > this. It's not the compiler, but the ABI. > To make clear in the comments what we are suppressing here any why. Feel free to post an updated patch description. Marc --=20 Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | --ek6ltibujq7z5ejj Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEK3kIWJt9yTYMP3ehqclaivrt76kFAmBbDQIACgkQqclaivrt 76kTYwf+JN9hl9/dzGKPNaxn1f/3DJlArPSCS3xSarYe3TcKgT+t4LG/D9urkzNP vIbfXeQ78dqjhgwBttM4Niog5NhakpiJdJ8+dhoQ/55PkOrwBQSB8ilPyV2NcBqj CqjyyVxzgW+uQ9ULauQascrt0T5K0bwcRNSvJ+/Gm9tw+q73wQ+PPPninyo/WX04 erOE9EjMIxtjlxjBSBY6/gXNG0h4PqOr6ejhQrdc26QBJmOYyImCOr5OxR8K2T+H J+PZMolNN57wkVzFa1eB8Ru8fESxCfp676ojfAdHdoo1jGUgnvxc+Xjq6VL4h2Zs eK0kbC8BuNFSiILjmizP8l+Bqcmw9g== =8MVo -----END PGP SIGNATURE----- --ek6ltibujq7z5ejj--