From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#15880: Compute C declarations for DEFSYMs automatically. Date: Fri, 09 Jan 2015 22:06:07 +0200 Message-ID: <831tn367o0.fsf@gnu.org> References: <5282C8F4.5010806@cs.ucla.edu> <5494D719.4040507@cs.ucla.edu> <5499FFF1.9050106@cs.ucla.edu> <54AAC905.1020906@cs.ucla.edu> <54AAD51C.7020207@cs.ucla.edu> <83lhlh83a3.fsf@gnu.org> <54AAE504.5090701@cs.ucla.edu> <83egr980v9.fsf@gnu.org> <54AB0E11.5050908@cs.ucla.edu> <837fx08u67.fsf@gnu.org> <54ADDA79.3050105@cs.ucla.edu> <83387l7670.fsf@gnu.org> <54B002F1.4030305@cs.ucla.edu> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1420833977 29637 80.91.229.3 (9 Jan 2015 20:06:17 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 9 Jan 2015 20:06:17 +0000 (UTC) Cc: 15880@debbugs.gnu.org To: Paul Eggert Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Jan 09 21:06:10 2015 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1Y9fov-0005KG-RV for geb-bug-gnu-emacs@m.gmane.org; Fri, 09 Jan 2015 21:06:09 +0100 Original-Received: from localhost ([::1]:52036 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y9fov-0007Nk-56 for geb-bug-gnu-emacs@m.gmane.org; Fri, 09 Jan 2015 15:06:09 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:45575) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y9for-0007Nb-SA for bug-gnu-emacs@gnu.org; Fri, 09 Jan 2015 15:06:06 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Y9foo-0005vU-VU for bug-gnu-emacs@gnu.org; Fri, 09 Jan 2015 15:06:05 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:59998) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y9foo-0005vP-Rl for bug-gnu-emacs@gnu.org; Fri, 09 Jan 2015 15:06:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1Y9foo-0002jR-Gd for bug-gnu-emacs@gnu.org; Fri, 09 Jan 2015 15:06:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 09 Jan 2015 20:06:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 15880 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch Original-Received: via spool by 15880-submit@debbugs.gnu.org id=B15880.142083395310485 (code B ref 15880); Fri, 09 Jan 2015 20:06:02 +0000 Original-Received: (at 15880) by debbugs.gnu.org; 9 Jan 2015 20:05:53 +0000 Original-Received: from localhost ([127.0.0.1]:41131 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Y9foe-0002j1-HE for submit@debbugs.gnu.org; Fri, 09 Jan 2015 15:05:52 -0500 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:48596) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Y9fob-0002iq-UD for 15880@debbugs.gnu.org; Fri, 09 Jan 2015 15:05:51 -0500 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0NHX00M00DO9NT00@a-mtaout20.012.net.il> for 15880@debbugs.gnu.org; Fri, 09 Jan 2015 22:05:48 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NHX00MWFEHOFPB0@a-mtaout20.012.net.il>; Fri, 09 Jan 2015 22:05:48 +0200 (IST) In-reply-to: <54B002F1.4030305@cs.ucla.edu> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 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.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:98138 Archived-At: > Date: Fri, 09 Jan 2015 08:33:53 -0800 > From: Paul Eggert > CC: rgm@gnu.org, 15880@debbugs.gnu.org > > Eli Zaretskii wrote: > > Could we instead just keep the previous semantics of XIL and XLI, > > please? They are used in a few places outside lisp.h, so now all of > > those places need to be audited and most probably changed. Why isn't > > it better to change the implementation of just 2 macros instead? > > XIL and XLI haven't changed, and have the same semantics as before: they convert > between Lisp_Object and EMACS_INT without altering the bits (i.e., they are > no-ops at the machine level). That's not what their previous semantics was. They converted between a Lisp integer and EMACS_INT. Now the object that comes out of them is a Lisp symbol which is invalid: it has no Lisp_Symbol structure allocated for it, so e.g. displaying it via the prin* functions will likely segfault. > I expect it's better to keep them no-ops, for efficiency in the > kernel of the Emacs Lisp interpreter. If we need efficient macros for the interpreter, we can have new ones for that. I'm saying let's leave XIL and XLI do what they did previously: convert from a Lisp integer to an EMACS_INT and back.