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.bugs Subject: bug#61960: 30.0.50; Unexec build reliably crashes during loadup Date: Thu, 16 Mar 2023 08:25:28 +0200 Message-ID: <83ilf1qkkn.fsf@gnu.org> References: <62049aa9ffcf9f39fd423fb87cd8dc8e0b77f9b8.camel@yandex.ru> <7a6e37ed07a49a85a51c8a3a40cadc2b752a38ef.camel@yandex.ru> <83o7p57mz1.fsf@gnu.org> <83jzzs60g1.fsf@gnu.org> <87edpveoq7.fsf@yahoo.com> <87jzzla5u8.fsf@yahoo.com> <87ilf25dam.fsf@yahoo.com> <83v8j2qeds.fsf@gnu.org> <87edpp5yif.fsf@yahoo.com> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="39553"; mail-complaints-to="usenet@ciao.gmane.io" Cc: hi-angel@yandex.ru, 61960@debbugs.gnu.org, akrl@sdf.org To: Po Lu Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Mar 16 07:26:12 2023 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 1pch40-000A2R-Bj for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 16 Mar 2023 07:26:12 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pch3u-0000Qi-Sq; Thu, 16 Mar 2023 02:26:06 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pch3r-0000QD-Id for bug-gnu-emacs@gnu.org; Thu, 16 Mar 2023 02:26:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pch3p-0008Dk-VG for bug-gnu-emacs@gnu.org; Thu, 16 Mar 2023 02:26:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1pch3p-0000NH-Qy for bug-gnu-emacs@gnu.org; Thu, 16 Mar 2023 02:26:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 16 Mar 2023 06:26:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 61960 X-GNU-PR-Package: emacs Original-Received: via spool by 61960-submit@debbugs.gnu.org id=B61960.16789479401412 (code B ref 61960); Thu, 16 Mar 2023 06:26:01 +0000 Original-Received: (at 61960) by debbugs.gnu.org; 16 Mar 2023 06:25:40 +0000 Original-Received: from localhost ([127.0.0.1]:41033 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pch3T-0000Mi-P4 for submit@debbugs.gnu.org; Thu, 16 Mar 2023 02:25:40 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:49434) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pch3S-0000MU-3y for 61960@debbugs.gnu.org; Thu, 16 Mar 2023 02:25:38 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pch3M-00084Q-8Y; Thu, 16 Mar 2023 02:25:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=g1Bkwe7GTHZa3N+/ZA/uReusznSpm9QSrGHyhY9z19M=; b=Iuic4brVmSfW xUZ0yOZgmKw3JJ1xFhZjAqXp8dTMdt1LaLNU/d70hhergOyDv3OeeLFq5X0gjM6Cj9vPPHmTtO5V/ 4n5F5/vf+p6JV4LcUC7fR+sItvd4PkNwYCRklLTD5Qp8y6ifvT1j3Zem+jD6uUNCj8CtMRIKnYSrg 6h5RD/L35Z6KVHIEYmgvhJhRELEpnoB/kwAyksQ/rt9bfTmrO1YxWGkowAZvvEbY3ZYdqaQDjBXNy WK8XT3Tz+53/NozpIIA2rx4WXjeIpfptlJv1XxPfspLBvYZ7LMRG/WWRh7gRWDbMw3UGeXFUVB1Ck iK5h5RSAHFGdERHxeH84Fg==; Original-Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pch3L-0005BV-82; Thu, 16 Mar 2023 02:25:31 -0400 In-Reply-To: <87edpp5yif.fsf@yahoo.com> (message from Po Lu on Thu, 16 Mar 2023 08:30:00 +0800) 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:258003 Archived-At: > From: Po Lu > Cc: akrl@sdf.org, 61960@debbugs.gnu.org, hi-angel@yandex.ru > Date: Thu, 16 Mar 2023 08:30:00 +0800 > > Eli Zaretskii writes: > > > Why astonishing? AFAIR, it was supposed to work, so unless it > > bit-rotted, it should still build and work. > > For example: Emacs with pdumper is supposed to be able to write into > objects in pure space. But that will crash an unexec build without the > necessary protections with a write into program text, and AFAIK those > protections are disabled if HAVE_PDUMPER. They are disabled, but no sane Lisp should write into pure space, ever. And it isn't really correct that they are disabled: the recent discussions about changing names of primitives clearly shows that at least some areas in the pure space are write-protected even in pdumper builds. At least that's what I see on my system. Anyway, I think you are mistaken in how you look at this (somewhat weird) configuration: all it was supposed to allow is decide how to dump Emacs at run time rather than at configure time. That's all.