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 [63.128.21.124]) by sourceware.org (Postfix) with ESMTP id BEB903857C75 for ; Thu, 26 Nov 2020 13:31:01 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org BEB903857C75 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-4-ldWpLQ8NPVCXGmpZxAT7Bw-1; Thu, 26 Nov 2020 08:30:59 -0500 X-MC-Unique: ldWpLQ8NPVCXGmpZxAT7Bw-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0C9471006C98; Thu, 26 Nov 2020 13:30:58 +0000 (UTC) Received: from tucnak.zalov.cz (ovpn-113-127.ams2.redhat.com [10.36.113.127]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 911D85D6AC; Thu, 26 Nov 2020 13:30:57 +0000 (UTC) Received: from tucnak.zalov.cz (localhost [127.0.0.1]) by tucnak.zalov.cz (8.16.1/8.16.1) with ESMTPS id 0AQDUs722369389 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Thu, 26 Nov 2020 14:30:54 +0100 Received: (from jakub@localhost) by tucnak.zalov.cz (8.16.1/8.16.1/Submit) id 0AQDUqjx2369388; Thu, 26 Nov 2020 14:30:52 +0100 Date: Thu, 26 Nov 2020 14:30:52 +0100 From: Jakub Jelinek To: Rainer Orth Cc: Iain Sandoe , GCC Patches Subject: Re: [PATCH] configury : Fix LEB128 support for non-GNU assemblers. Message-ID: <20201126133052.GX3788@tucnak> Reply-To: Jakub Jelinek References: <0099CE62-D849-40BA-BCBD-1AD3882AA9AD@sandoe.co.uk> MIME-Version: 1.0 In-Reply-To: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Spam-Status: No, score=-5.9 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 26 Nov 2020 13:31:03 -0000 On Thu, Nov 26, 2020 at 02:26:58PM +0100, Rainer Orth wrote: > which shows that the problem is detected in the depths of > libbacktrace's DWARF reader. There's something completely off in > places, like line numbers well beyond the end of dwarf.c. > > TBH, I don't really feel like diving into the innards of libbacktrace > and DWARF at this point to investigate. Perhaps try binutils readelf -wi or dwarflint etc. to find out where things go wrong, and then just look at the assembly and whether it matches what as made out of it? Jakub