From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Unexec dumping results in "Segmentation fault" on Windows Msys2 Date: Thu, 22 Apr 2021 20:22:55 +0300 Message-ID: <83zgxqnsi8.fsf@gnu.org> References: <83im52ed8b.fsf@gnu.org> <989be2e0-a090-309b-58cb-8064c6bd5aee@gmail.com> <83y2dycmgr.fsf@gnu.org> <835z0oyrct.fsf@gnu.org> <83eefby1hy.fsf@gnu.org> <64f14133-a647-7406-4908-671258038ae2@gmail.com> <834kg7xqrm.fsf@gnu.org> <79b4e022-5d46-ae76-2192-9e8594c43d8d@gmail.com> <83o8eevwym.fsf@gnu.org> <8ed0330c-482f-3f82-8b37-308328a314b5@gmail.com> <83v98fpmc0.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="13758"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: nikolay.kudryavtsev@gmail.com Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Apr 22 19:24:41 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 1lZd4B-0003Ha-UO for ged-emacs-devel@m.gmane-mx.org; Thu, 22 Apr 2021 19:24:39 +0200 Original-Received: from localhost ([::1]:55972 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lZd4A-0003nd-I9 for ged-emacs-devel@m.gmane-mx.org; Thu, 22 Apr 2021 13:24:39 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:41052) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lZd2i-000340-Rp for emacs-devel@gnu.org; Thu, 22 Apr 2021 13:23:08 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:53472) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lZd2i-0003EZ-KE; Thu, 22 Apr 2021 13:23:08 -0400 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:1903 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1lZd2f-0006Wm-Vy; Thu, 22 Apr 2021 13:23:08 -0400 In-Reply-To: <83v98fpmc0.fsf@gnu.org> (message from Eli Zaretskii on Wed, 21 Apr 2021 20:41:03 +0300) 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:268285 Archived-At: > Date: Wed, 21 Apr 2021 20:41:03 +0300 > From: Eli Zaretskii > Cc: emacs-devel@gnu.org > > > From: Nikolay Kudryavtsev > > Date: Wed, 21 Apr 2021 19:33:11 +0300 > > Cc: emacs-devel@gnu.org > > > > Eli, you were correct. Msys2 developers enabled ASLR by default in > > binutils 2.36 ( > > https://www.msys2.org/news/#2021-01-31-aslr-enabled-by-default ). > > > > I was able to avoid the segfault by adding those switches to > > LD_SWITCH_SYSTEM_TEMACS in src/Makefile. Adding them as generic LDFLAGS > > works too. > > > > Maybe it's worth documenting this problem in nt/INSTALL.W64, but since > > unexec is kinda deprecated I'm not entirely sure... > > It's much easier to teach the build process to use those switches when > building for unexec, so I'm going to do that soon. Now done on the master branch, please test.