From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by sourceware.org (Postfix) with ESMTPS id 285043858291 for ; Tue, 19 Jul 2022 10:17:08 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 285043858291 Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-63-qGzMTfwiMqaAByuOb-cZQQ-1; Tue, 19 Jul 2022 06:17:06 -0400 X-MC-Unique: qGzMTfwiMqaAByuOb-cZQQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id B32D6801755; Tue, 19 Jul 2022 10:17:05 +0000 (UTC) Received: from oldenburg.str.redhat.com (unknown [10.39.192.173]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C17651121314; Tue, 19 Jul 2022 10:17:04 +0000 (UTC) From: Florian Weimer To: Sunil K Pandey Cc: libc-stable@sourceware.org, "H.J. Lu" Subject: Re: [glibc/release/2.34/master] x86-64: Ignore r_addend for R_X86_64_GLOB_DAT/R_X86_64_JUMP_SLOT References: <20220719051055.76F3A385801D@sourceware.org> Date: Tue, 19 Jul 2022 12:17:00 +0200 In-Reply-To: <20220719051055.76F3A385801D@sourceware.org> (Sunil Pandey via Glibc-cvs's message of "Tue, 19 Jul 2022 05:10:55 +0000 (GMT)") Message-ID: <87pmi18l0j.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-5.3 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_LOW, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: libc-stable@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-stable mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Jul 2022 10:17:10 -0000 * Sunil Pandey via Glibc-cvs: > https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f6bc52f080e4a0195c707c01f54e2eae0ff89010 > > commit f6bc52f080e4a0195c707c01f54e2eae0ff89010 > Author: H.J. Lu > Date: Fri May 20 19:21:48 2022 -0700 > > x86-64: Ignore r_addend for R_X86_64_GLOB_DAT/R_X86_64_JUMP_SLOT > > According to x86-64 psABI, r_addend should be ignored for R_X86_64_GLOB_DAT > and R_X86_64_JUMP_SLOT. Since linkers always set their r_addends to 0, we > can ignore their r_addends. > > Reviewed-by: Fangrui Song > (cherry picked from commit f8587a61892cbafd98ce599131bf4f103466f084) Do we really need to backport this? It seems a bit risky. Thanks, Florian