From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sonic313-21.consmr.mail.ir2.yahoo.com (sonic313-21.consmr.mail.ir2.yahoo.com [77.238.179.188]) by sourceware.org (Postfix) with ESMTPS id E35B63947411 for ; Tue, 20 Oct 2020 18:23:45 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org E35B63947411 X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.de; s=s2048; t=1603218222; bh=48leWWMYH9l2p5w3LZpbOTdTFEXDH9OPgQvZWsuX7Cw=; h=Date:From:To:Subject; b=RiJcS+gNkgNkUmT/zcAgJmrAD7eCMPICj5IZ175Lb0l26VzkJEpK5RLIHcA9weLbfDP1xhyXiBeuN+idFi23uEr16c2YIAsb7uqkjFTUUKM5eFZgj0LdfKCb7/I7FmJtxX3BwjOL4UxM2FYt6s6j5pU0w86jtxiyEAXl2eUaL/nuwziuxvh+8axK3KauSZViVplPUX6VOiBITSsvH08ewNng/xEirYZTFHhIb8LGDsUJdxTfCExjxjS19yZsKVmL8WyME3A31YAxCq85K+Xmn/0PVODPnZzAl2iXcYBFS4DKfmMIO/JDBNw78dLUI5zFoKHfSUxRbNHVmLH7Kh4+Yw== X-YMail-OSG: yLsUZB8VM1mU_W3gA3q2WOIph2DAskTmPB4wlCqj7s.uZ3lYffQdnWZnkYOHKr_ 3OZxDK4qSG2bPBN2lFPgHR7QRuqvmheZ1xD1rOgolyYqoOGJSn8eodZZ0sQ7SJFc.3kA2E5qjEAf FAmniinG51rOLBjh_v_LR.rJejCnPTmsC7e0Ny4IUUz40OeAiiyPvvTLfd6iT3oaTIpP7l7JV8P0 TT7wA0Ebw5pwzh5HwvWY7GKQr5.5IHrpDDEuNzNXfzzAd5VrW4YMJC35XfoBF4ijv8p7lAn_SQ0W 3aFvBSp78CdxmQVDAmXqgZAuWPMhkly4.dkRlaJQsjukyUm6dESHMoZrJmueyS_kzo1Gba60iZ_E Bmo34aVBcpyA3dCm7CUwgf3XXsC6Ag.svBJuCxAfiqym.ucWuOoYEYMJ926wn_8m6_XNw8r7Ifad W79nGTmjAZeMUTaIwmSM62wSi9yECDwb60iKpEaRocK39YUR8FtKGNyEm7opNtRSpzLM9SlIOhhP YG78apSUUoQzSpn4QWhGhHd0E1ihmuuaf7iXB6RTRum66FgQKjzDxY7j_Ds3xH2jYKzqG4RF8KYk CFlfJ6OQQtb0q5wgJ6pBm4OxpsJDhWiV5PZQtu6RnO3VYj0YsdDK0z9o9yledYI8uLFynz5StHEG C3wMxF6xZykWycgKD2tMuXylXX3ufNIHAqEqW.K39x8xB4qADyUjaK6C2mTSHtqxtkqnj.3wVMnL vUUBsdzTftafhwEGQBe.B249ALxiv1OgX8z7w16Rflf7kuQAJm703UQsVGo3d5cpA101Yf90IK7b K1zmKs6nNURUqZxCkNQ2JY71wAKouIO7xm98_zDrGEXw80Q6TD2OCwc6VdaxDpaVXw72k09pEF_9 r5KuaR10O2lvDJi0hbvXw9MzMJbIGMnlxLJQ2z2dln2crVPQigqMecgkDUDqRTXs9cjH87H5asFw wKh6bSV0IiY._uA.rgJtA5PeCTVNz8rmWXdKUsjZjfhRyGeX_Sl1rl4gfYDURg42vbWh6kr6_0ij QDcu3_GtJQ1JxsiXmDTbnx.czTR.Gy52Z2WQ93SFvL9eHD2S8XOfsfp6WW3r46hUkuMn75mgUKs7 _AZXscPKBfrMZufmi0CKMsHbuIcVyPHdbuNtWVUJmLg0KA8h.PpA.x213qYaLvsrdIeHJdqxv5GI Q4emJ9gxPg7DtriIXx45U.KCNFAfsdwaGei042MCL0cl_mdTq2LxeNTgHOIqDCdGRaxG.vK8K8ix _IwWJsQGvMNVeBnpMS5iVrxgepQghhLwHLbzIaA1RzKUqo1BkvRPyJQK7y.TqFcuQwn6AP3vqCNO i7Epk18VJ0z6cVoRHQ1z_ZDo8kDfWvqJ0JULyHMviVfAdNNxa7WZPUNPQUvTWvMZiXTKfMtKeCXb zlNZfgq3w0KKdBmtagPORvY8GRbNyfNuhTgKchAtslW47vo32W7.EskNlYrtwXIIBdU5iRh69N9l bzoaP0bc- Received: from sonic.gate.mail.ne1.yahoo.com by sonic313.consmr.mail.ir2.yahoo.com with HTTP; Tue, 20 Oct 2020 18:23:42 +0000 Date: Tue, 20 Oct 2020 18:23:39 +0000 (UTC) From: Hannes Domani To: Christian Biesinger , Joel Sherrill Cc: "gdb@sourceware.org" Message-ID: <2088332346.2505262.1603218219278@mail.yahoo.com> In-Reply-To: References: <339649978.1780844.1603129592020@mail.yahoo.com> Subject: Re: Build Failure on Cygwin MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Mailer: WebService/1.1.16868 YMailNorrin Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:76.0) Gecko/20100101 Firefox/76.0 X-Spam-Status: No, score=-4.7 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, RCVD_IN_DNSWL_NONE, 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: Tue, 20 Oct 2020 18:23:47 -0000 Am Dienstag, 20. Oktober 2020, 15:35:52 MESZ hat Joel Sherrill Folgendes geschrieben: > On Tue, Oct 20, 2020 at 6:39 AM Christian Biesinger wrote: > > On Mon, Oct 19, 2020 at 9:34 PM Joel Sherrill wrote: > >> And to this from Christian. > >> > >> > I've seen this error on various toolchains. I believe it to be a gcc > >> > bug; however, since it still seems to be an issue on some platforms, > >> > maybe gdb should avoid using global (nonstatic) threadlocal > >> > variables... (and instead abstract access to this variable through > >> > getters/setters) > >> > >> I emailed Corrina from Cygwin and she thought it was a gdb issue > >> and not a Cygwin issue. I didn't know which project was best to file > >> this on. > > > > Did she have any more thoughts on that? Like, what should gdb do differ= entl > > Only this: > > "That's GDB only, I think.=C2=A0 thread_local_segv_handler is not defined= , > but that's something in GDB which is not created when building on > Cygwin, erroneously." > > I've updated my cygwin this week and GCC is 10.2.0 and the > packaged gdb is 8.3.1. > > I added V=3D1 and event-top.o is definitely being linked in. Trying > nm on it, I see this: > > $ nm event-top.o=C2=A0 | grep -i segv > 0000000000000000 D __emutls_v.thread_local_segv_handler > 0000000000000640 t _ZL14handle_sigsegvi > > $ nm event-top.o=C2=A0 | c++filt | grep -i segv > 0000000000000000 D __emutls_v.thread_local_segv_handler > 0000000000000640 t handle_sigsegv(int) > > This is the first time I've looked at thread local storage in a symbol > table. We haven't had issues with it like this compiling for RTEMS. > > Any ideas for something else to poke at? In the previous thread Jim Wilson said this is a binutils bug, and he fixed a similar bug already for RISC-V: https://sourceware.org/pipermail/gdb/2020-March/048449.html https://sourceware.org/bugzilla/show_bug.cgi?id=3D23244 Hannes