From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: John Wiegley Newsgroups: gmane.emacs.devel Subject: Re: Removal of unexec support from glibc malloc Date: Mon, 18 Jan 2016 11:20:00 -0800 Message-ID: References: <569CDB81.6040600@redhat.com> Reply-To: John Wiegley NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" X-Trace: ger.gmane.org 1453144835 12913 80.91.229.3 (18 Jan 2016 19:20:35 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 18 Jan 2016 19:20:35 +0000 (UTC) Cc: emacs-devel@gnu.org To: Florian Weimer Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Jan 18 20:20:30 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1aLFLq-0005g5-8v for ged-emacs-devel@m.gmane.org; Mon, 18 Jan 2016 20:20:30 +0100 Original-Received: from localhost ([::1]:33275 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aLFLp-0005Tl-CE for ged-emacs-devel@m.gmane.org; Mon, 18 Jan 2016 14:20:29 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56820) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aLFLX-00059f-Ch for emacs-devel@gnu.org; Mon, 18 Jan 2016 14:20:12 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aLFLT-0003Eg-CO for emacs-devel@gnu.org; Mon, 18 Jan 2016 14:20:11 -0500 Original-Received: from mail-pf0-x22a.google.com ([2607:f8b0:400e:c00::22a]:34991) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aLFLT-0003ER-31 for emacs-devel@gnu.org; Mon, 18 Jan 2016 14:20:07 -0500 Original-Received: by mail-pf0-x22a.google.com with SMTP id 65so161943222pff.2 for ; Mon, 18 Jan 2016 11:20:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:in-reply-to:date:message-id:references :user-agent:reply-to:mail-followup-to:mime-version:content-type; bh=7Sc7nrTOxmbHXkA6crnMLlql11Vu9jOY+V7JS3beSsw=; b=Ijj4SVgtCkTeQjdxhoDCztlBswPjuKEt8Jrs4uGcGTXDJ48yumWtWyiY/Ren5LJLj6 eLWcPSrVQcxBTMOoDTPTKkGVQUW1i/KH6y5ycs1wLV52DK8qwqsP83pnprhXE3ITriYu hH/hEx7XL9TW2t4RTkRpZAw3C71Z17XCl+dQsBRZrr+SadtsbzIEkhFpcbyhhUkWqYXN 1jZ69bdEPBeynzJ33vG60IIXdWcW74Cuzwrqi0Y6mLjautvxTyYterMOrTjTSHiO0I4x n6Fi60rM6mQvO/IRKLH4r38z9qPckZhF2mj+JGQbYdYs6g1Hd8xPJ+ZoKeIBQ1QE0JTd mpkw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:in-reply-to:date:message-id :references:user-agent:reply-to:mail-followup-to:mime-version :content-type; bh=7Sc7nrTOxmbHXkA6crnMLlql11Vu9jOY+V7JS3beSsw=; b=Yea6XUUntpVmR/k2O8XcQoBqPVRICVvqlVUQcXnRw7FUl9mmxDNUfwVm47vEWIFQML E+lFEf5hlI4m6oBCffhpOC7VPP15zoaj28M+XhUhE4V7NvA9iUUNT8fn+SbjhUe25Bj0 y083rBHoy6S5p6eoz4eGlxCpUkEOdNBudWlyXpEppEVLbPHr54Y/8qoCYEAYj0sC86gq G8+HncK+IT4nrDwmr1QAVcLM1TW/rVZAQIAELK3x3J3bvc8n90NuXwjULJl2RVqANTDZ XbI/HCM1+g98f5jdeBhE3Tk60wFCO+NmTWzzJB3Dun74Ayx/CMEHoSDpprlfxf0iX4MT x+0g== X-Gm-Message-State: ALoCoQk29BILAAXebOAneh/dIkjLw4XGiK9QAnA4pD3yMGjr/Bmd+Yv/0wvV5wBIMeFwrKxcYRaMhTbw72aWB+xromSYRD2rjg== X-Received: by 10.98.7.79 with SMTP id b76mr39471097pfd.40.1453144806283; Mon, 18 Jan 2016 11:20:06 -0800 (PST) Original-Received: from Vulcan.local (76-234-68-79.lightspeed.frokca.sbcglobal.net. [76.234.68.79]) by smtp.gmail.com with ESMTPSA id l73sm35794622pfi.37.2016.01.18.11.20.04 (version=TLS1 cipher=AES128-SHA bits=128/128); Mon, 18 Jan 2016 11:20:05 -0800 (PST) X-Google-Original-From: "John Wiegley" Original-Received: by Vulcan.local (Postfix, from userid 501) id 4095A124B2F1F; Mon, 18 Jan 2016 11:20:04 -0800 (PST) In-Reply-To: <569CDB81.6040600@redhat.com> (Florian Weimer's message of "Mon, 18 Jan 2016 13:33:05 +0100") User-Agent: Gnus/5.130014 (Ma Gnus v0.14) Emacs/24.5 (darwin) Mail-Followup-To: Florian Weimer , emacs-devel@gnu.org X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2607:f8b0:400e:c00::22a X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:198273 Archived-At: --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable >>>>> Florian Weimer writes: > This is a heads-up that glibc malloc will likely remove support code for = the > Emacs unexec mechanism during the coming year. Hi Florian, I think you might understand our dismay at hearing this without any prior notice, since Emacs does depend on the unexec mechanism, and we are current= ly preparing a major upcoming release (25.1) that makes use of it. Could we start a discussion on whether it's possible to still allow this support in some form? You are asking us to make a rather significant change= to low-level code that has been functioning for a very long time. I'm not even sure yet what lack of this support entails for existing and future Emacsen. As we are both projects under the GNU banner, I hope we can find a middle ground to further the GNU project, yet without such sudden and unexpected costs. At the very least, allowing a longer timeline before removing unexec functionality will permit us to research, prepare, and possibly suggest counter-proposals to achieve the same overall objective. =2D-=20 John Wiegley GPG fingerprint =3D 4710 CF98 AF9B 327B B80F http://newartisans.com 60E1 46C4 BD1A 7AC1 4BA2 --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQGcBAEBCgAGBQJWnTrgAAoJEMFE2PTxn+YwJ0AMAMzuxl2x6DqU2v711U9dVarq 4Zb1nh7vFrGIUfy6ZmCzHtk7qkGl+/nRMprAqTZbindLzu+BDyg52jOGNCDObdMC 7ddZRczyZ0lZY6OLyk1gEZeAugjqaMeM+BbVtMFGwbVw+CYH0C4ErMxVtgePfY3E H9tq248ET8+8AWjpHXzfh69uQTIoku/uhehwTGBEg5EmfbwyVcVla31W4gpuMSvE 0MX6iqu94OBBc03T+wtvVuEDmOh+/Zym4k2Kjjkbu9sE3iPtZRemtOnt/tr3PQkQ K63MsBhax0suipLur7anQ6VftxKoYyqCLoLBpgZSfRsnf7AJpgeegV6tC7IopChV 0zMtDGIWBfl713kRkn8cEVdAiYE9NJw5BTj2z7xVacZvDi5DPfvUJYLiGtpzr9Cf Xje7mfJnUBpw9y9MOR+E1fVKoe+ce1DCjcZ4APbKDjAwAuDHLMmvLX1k1Wt2IZUx nnGw/TQwYgPVJspo9P8E8fxcLREzIdp0NJFxS+lmHw== =58hc -----END PGP SIGNATURE----- --=-=-=--