From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp.polymtl.ca (smtp.polymtl.ca [132.207.4.11]) by sourceware.org (Postfix) with ESMTPS id 885EF3894C1D for ; Wed, 7 Apr 2021 02:49:57 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 885EF3894C1D Received: from simark.ca (simark.ca [158.69.221.121]) (authenticated bits=0) by smtp.polymtl.ca (8.14.7/8.14.7) with ESMTP id 1372nok3026354 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 6 Apr 2021 22:49:55 -0400 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp.polymtl.ca 1372nok3026354 Received: from [10.0.0.11] (192-222-157-6.qc.cable.ebox.net [192.222.157.6]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by simark.ca (Postfix) with ESMTPSA id 70D691E789; Tue, 6 Apr 2021 22:49:50 -0400 (EDT) Subject: Re: [PATCH] gdb: try to load libthread_db only after reading all shared libraries when attaching To: Kevin Buettner , Tom Tromey Cc: Florian Weimer , gdb-patches@sourceware.org References: <20210330172149.1724381-1-simon.marchi@polymtl.ca> <87blawmwwg.fsf@tromey.com> <20210406140847.038a7431@f33-m1.lan> From: Simon Marchi Message-ID: Date: Tue, 6 Apr 2021 22:49:50 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 In-Reply-To: <20210406140847.038a7431@f33-m1.lan> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Poly-FromMTA: (simark.ca [158.69.221.121]) at Wed, 7 Apr 2021 02:49:50 +0000 X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, NICE_REPLY_A, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_PASS, 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: gdb-patches@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Apr 2021 02:50:06 -0000 On 2021-04-06 5:08 p.m., Kevin Buettner via Gdb-patches wrote: > On Fri, 02 Apr 2021 11:14:23 -0600 > Tom Tromey wrote: > >> Also, does gdbserver need a similar treatment? I know it has to load >> libthread_db (one of the problems with this library) but is the decision >> to do so drive by gdb or by itself? I don't recall. > > gdbserver definitely has problems too. It needs gdb to look up > symbols (via the qSymbol packet), but is only able to do so at certain > times. > > I'm trying to puzzle it out now... Hi Kevin, Just wondering, are you actively working on this problem? I am not currently assigned on this at $day_job, so all I can put on it is leftovers of time here and there. If you want to propose another patch / solution, feel free! Simon