From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Richard Stallman Newsgroups: gmane.emacs.devel Subject: Re: How much do we care about undefined behavior triggered by invalid bytecode? Date: Tue, 22 May 2018 23:28:06 -0400 Message-ID: References: Reply-To: rms@gnu.org NNTP-Posting-Host: blaine.gmane.org Content-Type: text/plain; charset=Utf-8 X-Trace: blaine.gmane.org 1527045979 4014 195.159.176.226 (23 May 2018 03:26:19 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 23 May 2018 03:26:19 +0000 (UTC) Cc: p.stephani2@gmail.com, npostavs@gmail.com, emacs-devel@gnu.org To: Andreas Schwab Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed May 23 05:26:15 2018 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fLKPn-0000wl-9K for ged-emacs-devel@m.gmane.org; Wed, 23 May 2018 05:26:15 +0200 Original-Received: from localhost ([::1]:59022 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fLKRu-0004G9-E0 for ged-emacs-devel@m.gmane.org; Tue, 22 May 2018 23:28:26 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:47250) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fLKRk-0004F4-Vy for emacs-devel@gnu.org; Tue, 22 May 2018 23:28:17 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fLKRk-0003k0-86 for emacs-devel@gnu.org; Tue, 22 May 2018 23:28:17 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:33154) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fLKRe-0003hW-6o; Tue, 22 May 2018 23:28:10 -0400 Original-Received: from rms by fencepost.gnu.org with local (Exim 4.82) (envelope-from ) id 1fLKRa-0007Xv-9K; Tue, 22 May 2018 23:28:06 -0400 In-reply-to: (message from Andreas Schwab on Tue, 22 May 2018 16:01:47 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.emacs.devel:225588 Archived-At: [[[ To any NSA and FBI agents reading my email: please consider ]]] [[[ whether defending the US Constitution against all enemies, ]]] [[[ foreign or domestic, requires you to follow Snowden's example. ]]] > Nevertheless, IMHO the bytecode interpreter should be made robust where > possible. I think it would be an improvement to do check for nonsensical bytecode when creating a bytecode object. As long as it doesn't make reading a compiled file much slower. -- Dr Richard Stallman President, Free Software Foundation (https://gnu.org, https://fsf.org) Internet Hall-of-Famer (https://internethalloffame.org)