From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gnu.wildebeest.org (gnu.wildebeest.org [45.83.234.184]) by sourceware.org (Postfix) with ESMTPS id 533EF3858D39 for ; Wed, 15 Dec 2021 13:01:41 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 533EF3858D39 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=klomp.org Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=klomp.org Received: from tarox.wildebeest.org (83-87-18-245.cable.dynamic.v4.ziggo.nl [83.87.18.245]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by gnu.wildebeest.org (Postfix) with ESMTPSA id B6A54302FBA5; Wed, 15 Dec 2021 14:01:39 +0100 (CET) Received: by tarox.wildebeest.org (Postfix, from userid 1000) id 81E5040007B0; Wed, 15 Dec 2021 14:01:38 +0100 (CET) Message-ID: <190f644f891540161747b351fa4f873d948632c5.camel@klomp.org> Subject: Re: Buildbot failure in Wildebeest Builder on whole buildset From: Mark Wielaard To: buildbot@builder.wildebeest.org, libabigail@sourceware.org Date: Wed, 15 Dec 2021 14:01:38 +0100 In-Reply-To: <20211214155547.3DCBC8021E3@builder.wildebeest.org> References: <20211214155547.3DCBC8021E3@builder.wildebeest.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Mailer: Evolution 3.28.5 (3.28.5-10.el7) Mime-Version: 1.0 X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libabigail@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Mailing list of the Libabigail project List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Dec 2021 13:01:43 -0000 Hi, On Tue, 2021-12-14 at 15:55 +0000, buildbot@builder.wildebeest.org wrote: > The Buildbot has detected a new failure on builder libabigail-debian- > i386 while building libabigail. > Full details are available at: > https://builder.wildebeest.org/buildbot/#builders/5/builds/789 >=20 > Buildbot URL: https://builder.wildebeest.org/buildbot/ >=20 > Worker for this Build: debian-i386 This failed on all buildbot workers which are using elfutils < 0.184. There is a bug in dwarf_getlocation in case the attribute is DW_AT_data_member_location encoded as DW_FORM_implicit_const (DWARF5). It was fixed in elfutils by: commit ce6a126b01b2c8951dd941a95a92be71e34f2088 Author: Mark Wielaard Date: Fri Feb 12 16:28:50 2021 +0100 readelf, libdw: blocks aren't expressions for DWARF version 4 =20 For DWARF version 4 or higher a block form really encodes a block, not an expression location. Also constant offsets can be expressed as DW_FORM_implicit_const in DWARF version 5. =20 Signed-off-by: Mark Wielaard But since that is a fairly recent commit I am working on a workaround for libabigail when using an older elfutls libdw. Cheers, Mark