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: Fri, 16 Apr 2021 10:45:33 +0300 Message-ID: <83wnt2wu3m.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> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="1078"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: Nikolay Kudryavtsev Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Apr 16 09:47:02 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 1lXJBt-0000AA-NM for ged-emacs-devel@m.gmane-mx.org; Fri, 16 Apr 2021 09:47:01 +0200 Original-Received: from localhost ([::1]:47220 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lXJBs-0000w3-NM for ged-emacs-devel@m.gmane-mx.org; Fri, 16 Apr 2021 03:47:00 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:53084) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lXJAZ-0008Ro-Dw for emacs-devel@gnu.org; Fri, 16 Apr 2021 03:45:39 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:52378) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lXJAZ-0001kX-69; Fri, 16 Apr 2021 03:45:39 -0400 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:2564 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1lXJAY-0004jt-EF; Fri, 16 Apr 2021 03:45:38 -0400 In-Reply-To: <64f14133-a647-7406-4908-671258038ae2@gmail.com> (message from Nikolay Kudryavtsev on Thu, 15 Apr 2021 22:17:30 +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:268116 Archived-At: > From: Nikolay Kudryavtsev > Cc: emacs-devel@gnu.org > Date: Thu, 15 Apr 2021 22:17:30 +0300 > > Folder d:/Emacs/configurations/msys2-brake-test/src/lisp does not exist. > > (gdb) p current_thread > $1 = (struct thread_state *) 0xffe868d4df20 > (gdb) p current_thread->m_stack_bottom > Cannot access memory at address 0xffe868d4df68 A stub in the dark: add the following switches to the temacs link command line, then rebuild temacs, redump emacs, and see if the problems go away: -Wl,-disable-high-entropy-va -Wl,-disable-reloc-section These disable the Windows ASLR, which could interfere with the assumption that addresses that are recorded at dump time stay the same when the dumped Emacs is restarted.