From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Glenn Morris Newsgroups: gmane.emacs.bugs Subject: bug#25166: 26.0.50; It shouldn't be possible to set the function cell of nil and t Date: Sun, 11 Dec 2016 13:38:57 -0500 Message-ID: <5f7f76ia4e.fsf@fencepost.gnu.org> References: NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1481481614 24516 195.159.176.226 (11 Dec 2016 18:40:14 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sun, 11 Dec 2016 18:40:14 +0000 (UTC) User-Agent: Gnus (www.gnus.org), GNU Emacs (www.gnu.org/software/emacs/) Cc: 25166@debbugs.gnu.org To: Philipp Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Dec 11 19:40:10 2016 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1cG92f-0005Ie-1e for geb-bug-gnu-emacs@m.gmane.org; Sun, 11 Dec 2016 19:40:09 +0100 Original-Received: from localhost ([::1]:56771 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cG92j-00026p-Bo for geb-bug-gnu-emacs@m.gmane.org; Sun, 11 Dec 2016 13:40:13 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35402) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cG92Y-00025K-Kj for bug-gnu-emacs@gnu.org; Sun, 11 Dec 2016 13:40:06 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cG92X-0005m6-Uu for bug-gnu-emacs@gnu.org; Sun, 11 Dec 2016 13:40:02 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:51245) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cG92X-0005m2-SK for bug-gnu-emacs@gnu.org; Sun, 11 Dec 2016 13:40:01 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1cG92X-0003xn-JO for bug-gnu-emacs@gnu.org; Sun, 11 Dec 2016 13:40:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Glenn Morris Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 11 Dec 2016 18:40:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 25166 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 25166-submit@debbugs.gnu.org id=B25166.148148154815147 (code B ref 25166); Sun, 11 Dec 2016 18:40:01 +0000 Original-Received: (at 25166) by debbugs.gnu.org; 11 Dec 2016 18:39:08 +0000 Original-Received: from localhost ([127.0.0.1]:38408 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cG91g-0003wE-H3 for submit@debbugs.gnu.org; Sun, 11 Dec 2016 13:39:08 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:44083) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cG91f-0003vm-4m for 25166@debbugs.gnu.org; Sun, 11 Dec 2016 13:39:07 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cG91Z-0005Ur-0u for 25166@debbugs.gnu.org; Sun, 11 Dec 2016 13:39:01 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:45784) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cG91X-0005UO-Em; Sun, 11 Dec 2016 13:38:59 -0500 Original-Received: from rgm by fencepost.gnu.org with local (Exim 4.82) (envelope-from ) id 1cG91V-0000BW-So; Sun, 11 Dec 2016 13:38:57 -0500 X-Spook: INS Task Force NBIC Hurricane Recovery Lockdown Weapons X-Ran: Lee~[qjz,gkx&Ad)=.V+Y^3::+~^9`n4[s,=~JxN=7:T`T8H"t3H[N+]4`YZ`)b{;UI4uQ X-Hue: brightblack X-Attribution: GM In-Reply-To: (Philipp's message of "Sun, 11 Dec 2016 10:41:13 +0100") X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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" Xref: news.gmane.org gmane.emacs.bugs:126881 Archived-At: Philipp wrote: > You can set the function cell of nil and t using `fset' and friends. > But you can't call the `nil' function using (nil) (it does work with > (t)). I think that attempting to set the function cell of nil and t is > almost always a bug -- probably the programmer wanted to set a real > symbol, but some of the constants got passed. I propose to signal an > error (e.g. `setting-constant') whenever the function cell of nil and t > is modified; maybe the same should happen for keywords. I just did this yesterday... See https://debbugs.gnu.org/25110, ba8e883, and 3fd4433.