From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.gmx.net (mout.gmx.net [212.227.17.21]) by sourceware.org (Postfix) with ESMTPS id 7BBD13858C27 for ; Sat, 21 Nov 2020 20:34:12 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 7BBD13858C27 X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [192.168.1.7] ([104.247.236.7]) by mail.gmx.com (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1M1Ygt-1kedlv11Kt-0034n8; Sat, 21 Nov 2020 21:34:04 +0100 Subject: Re: GDB 10.1: Backtrace goes into infinite loop To: psmith@gnu.org, gdb@sourceware.org References: <503bd54a619aa2781d6b1385cbd3db20634addaa.camel@gnu.org> <5553a2ee-6918-87e6-2283-3cbb37b9ec6f@simark.ca> <3b63c3503a31dabc42315cb133e434c158759a46.camel@gnu.org> From: Aurelian Melinte Message-ID: <29c86d7f-4b7c-c393-bd72-04c22028477a@gmx.net> Date: Sat, 21 Nov 2020 15:33:58 -0500 User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: <3b63c3503a31dabc42315cb133e434c158759a46.camel@gnu.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Content-Language: en-US X-Antivirus: Avast (VPS 201121-2, 21/11/2020), Outbound message X-Antivirus-Status: Clean X-Provags-ID: V03:K1:3qT4Bgg0NF+0bRqflC/ZhHaBoHszWjf82VIQlaneI6IhSU1ujMD 2ZOWvV8jCiBZqCBH2L+M09aLaeAXbFqsqpQE0VGfUX6WQwQfxwk00MkMOcmvasKe1UYvZZr nV+tumqJ4VBH/gJkonYDZK8IqdWLVm9Zmfv5hMJb9CFtJDHWYxr06cWSJ3r7rX61zwhxlA+ DYBEXnXgYbF43aR2eHyMw== X-UI-Out-Filterresults: notjunk:1;V03:K0:0NGUN62dfVE=:Uhp1D4E0czDcEVwo7BP9Cc qYtTjF98s2xTNUj/3oWnYCUbiLOy6sawi0WNtG0hs9lYHcUabg2vHgVNZ3zonODI/GMmNuIih rwtWguqtFSosk+aXuIVoy0/mi2mKu3+pJzPlrcM93BGyTLLA3pKZBNQGX5z6MeuoufVD9xem3 Q6cei2DSpUJUmjllzuEMAhx/QCoE55pcjTWz9Yfctk1iLCtHF/1tvcK7KzNlxY6PBpmRoOxaQ is7WlNZ6j6/JoMeMdK69XGnGO6sdn6WISl6+rCwalW6GCkwF/0TQl+xYWETUQGX6P2iqRjLDm q1+tpe/kM6fstL7k33rD0VVRDuBOxInzRp9OXlv1o5WYOwMgBDXEOJRS2R9zdMAyRErkIFu+3 +8ETXJfIu1EuAFxJAIdvIfi0Sw4/AUjQJyELW1rqD1nLHfH79GCtCaJ+pOKilSXTYJSzkONbN s5IlE/oVPpDz7j7JzyJSwRUJFs1YFQDaMMb0xc0xmwXu+7h1DwCSW/ZtEmOFdf8CLzWEF4/jH DF4CB/a9tnkHczow1M/iv9hC6KToL52oayDVdSfQTH3uibjbBr1/uaO6pprk+HSwKQM7t0HFe PjolBLXv7T/p7iyN9GLMgHb7ivzJ6QOhWgBr64wt/txvLTp32968nksiwTUCn9nUmUt4ijNXv wcdIxJSqXRwJ9tyfOumn/xiKaVdShUdXx3JDyNCxp5E/vkImGMsN07J74vbfnBQLkwJW60yX3 1TUC5a2FA/9HPsa+8e97XO8AqXU2rjBB9xeZPs3YxjvcgNvRYHaCUjxRQnlaYBZIbuw1RafmH 42WVj/o3DSnElVHzYwkxhcJCeAVQfROckG0jCP4IbWPhmp5wnD5DurYVq6wg4+fNthtkXrk3/ dQFSqwwWKOmBI8TCGk9Q== X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_ENVFROM_END_DIGIT, FREEMAIL_FROM, NICE_REPLY_A, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2, 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: gdb@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 21 Nov 2020 20:34:14 -0000 On 21/11/2020 13:48, Paul Smith via Gdb wrote: > On Sun, 2020-11-15 at 20:04 -0500, Simon Marchi wrote: >> When you see the problem happening, you could save a core file (just >> run the generate-core-file command). Then, try to reproduce the >> problem using the core file. If it reproduces, you could upload it >> to a bug report. > Hi Simon; thanks for the reply. Just to say that this is still > happening and I've now heard from two people on my team who see this > behavior. > > I have not seen it though. I'm asking them to provide me with > reproduction core files and binaries. As soon as I have this I will > investigate further. > > Cheers! I remember having seen this with a C++ clang compiled binary. At the time I thought it loops over static data members in classes. E.g. you have a class C, a static of it s and a member in C which would return a ref/ptr to s. HTH =2D- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus