From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Andrea Corallo via "Emacs development discussions." Newsgroups: gmane.emacs.devel Subject: Re: Minimal recommended version of gcc/libgccjit for native-comp Date: Mon, 26 Apr 2021 20:53:52 +0000 Message-ID: References: <20210425182503.25223.81072@vcs0.savannah.gnu.org> <20210425182508.6CC7C2094D@vcs0.savannah.gnu.org> <87mttl5gm8.fsf_-_@tammy.lan.sha-bang.de> <835z09ja28.fsf@gnu.org> <8335vdj89x.fsf@gnu.org> Reply-To: Andrea Corallo Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="38552"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: monnier@iro.umontreal.ca, wilde@sha-bang.de, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Apr 26 22:55:27 2021 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lb8GN-0009uU-68 for ged-emacs-devel@m.gmane-mx.org; Mon, 26 Apr 2021 22:55:27 +0200 Original-Received: from localhost ([::1]:47120 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lb8GM-0006lC-7k for ged-emacs-devel@m.gmane-mx.org; Mon, 26 Apr 2021 16:55:26 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:41682) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lb8Ey-00067o-M2 for emacs-devel@gnu.org; Mon, 26 Apr 2021 16:54:00 -0400 Original-Received: from mx.sdf.org ([205.166.94.24]:53776) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lb8Ew-0004iQ-D5; Mon, 26 Apr 2021 16:54:00 -0400 Original-Received: from mab (ma.sdf.org [205.166.94.33]) by mx.sdf.org (8.15.2/8.14.5) with ESMTPS id 13QKrqJA028315 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits) verified NO); Mon, 26 Apr 2021 20:53:54 GMT In-Reply-To: <8335vdj89x.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 26 Apr 2021 19:54:50 +0300") Received-SPF: pass client-ip=205.166.94.24; envelope-from=akrl@sdf.org; helo=mx.sdf.org X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:268505 Archived-At: Eli Zaretskii writes: >> From: Andrea Corallo >> Cc: Stefan Monnier , wilde@sha-bang.de, >> emacs-devel@gnu.org >> Date: Mon, 26 Apr 2021 16:32:07 +0000 >> >> >> So incompatibilities with libgccjit tend to result in annoying errors >> >> rather than catastrophic crashes. >> > >> > I've seen both, actually. >> >> I think Stefan referred to the fact that because we always run >> compilations in a subprocesses once bootstrap is done even if libgccjit >> crashe the main Emacs will just report some error. IOW it *should* not >> be dangerous. > > As you remember, we've seen crashes in the native code, until we > disabled one of the passes in libgccjit. So it isn't unthinkable that > some similar problem which we didn't yet see exists, especially in > earlier versions of libgccjit. I don't remanber exacly the scenario but wasn't that an ICE in libgccjit and so either crashing bootstrap or handled in a subprocess? Anyway I guess you are right we still have to gain more experience expecially with old libgccjit versions. > Btw, I'm somewhat disappointed by the (lack of) responsiveness from > libgccjit developers: a bug I reported to Bugzilla a week ago (and > which was actually known to them for a month before that, from our > correspondence) didn't get even a single response yet. I guess you are talking about jit/100151, sorry for that, if it's a Windows specific issue I fear we have no regular libgccjit contributors on this OS ATM :( Andrea