From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Andrea Corallo Newsgroups: gmane.emacs.bugs Subject: bug#41242: Port feature/native-comp to Windows - Reduce the number of files probed when finding a lisp file. Date: Wed, 03 Jun 2020 13:50:37 +0000 Message-ID: References: <83blm1eciw.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="46740"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) Cc: 41242@debbugs.gnu.org To: Nicolas =?UTF-8?Q?B=C3=A9rtolo?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Jun 03 15:51:11 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1jgTnS-000C0l-Ps for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 03 Jun 2020 15:51:10 +0200 Original-Received: from localhost ([::1]:53694 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jgTnR-0001Zc-Kn for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 03 Jun 2020 09:51:09 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:55808) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jgTnK-0001Wy-JE for bug-gnu-emacs@gnu.org; Wed, 03 Jun 2020 09:51:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:59097) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jgTnK-0003R8-Ae for bug-gnu-emacs@gnu.org; Wed, 03 Jun 2020 09:51:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1jgTnK-00046N-9b for bug-gnu-emacs@gnu.org; Wed, 03 Jun 2020 09:51:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Andrea Corallo Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 03 Jun 2020 13:51:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 41242 X-GNU-PR-Package: emacs Original-Received: via spool by 41242-submit@debbugs.gnu.org id=B41242.159119224115736 (code B ref 41242); Wed, 03 Jun 2020 13:51:02 +0000 Original-Received: (at 41242) by debbugs.gnu.org; 3 Jun 2020 13:50:41 +0000 Original-Received: from localhost ([127.0.0.1]:42410 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jgTmz-00045j-6Q for submit@debbugs.gnu.org; Wed, 03 Jun 2020 09:50:41 -0400 Original-Received: from mx.sdf.org ([205.166.94.20]:50618) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jgTmx-00045b-GQ for 41242@debbugs.gnu.org; Wed, 03 Jun 2020 09:50:40 -0400 Original-Received: from sdf.org (ma.sdf.org [205.166.94.33]) by mx.sdf.org (8.15.2/8.14.5) with ESMTPS id 053DobDi018709 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits) verified NO); Wed, 3 Jun 2020 13:50:38 GMT Original-Received: (from akrl@localhost) by sdf.org (8.15.2/8.12.8/Submit) id 053Dobfk027428; Wed, 3 Jun 2020 13:50:37 GMT In-Reply-To: ("Nicolas =?UTF-8?Q?B=C3=A9rtolo?="'s message of "Tue, 2 Jun 2020 20:39:06 -0300") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:181455 Archived-At: Nicolas B=C3=A9rtolo writes: >> Second this code would fail both link time and load time if the linker >> cannot resolve one of these three functions making the test on the >> result of dlsym in the run time pointless. > > I thought that on GNU/Linux the dynamic linker would just resolve a funct= ion > when necessary (i.e. function call) and not when starting the executable.= I > assumed that lazy binding was the default, and then the call to dlsym wou= ld > prevent a crash. > > This is what the man page of 'ld' says about the '-z lazy' option: > > When generating an executable or shared library, mark it to tell the dyna= mic > linker to defer function call resolution to the point when the function is > called (lazy binding), rather than at load time. Lazy binding is the defa= ult. Yes, but even if you use lazy linking this code would not link if the linker cannot verify the presence of these functions. In this case all users with a non 10 libgccjit. Andrea --=20 akrl@sdf.org