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#25684: 25.1; (downcase -1) segfaults Emacs on GNU/Linux Date: Mon, 13 Feb 2017 16:29:58 -0500 Message-ID: <5t1sv1u6cp.fsf@fencepost.gnu.org> References: NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1487022694 7380 195.159.176.226 (13 Feb 2017 21:51:34 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 13 Feb 2017 21:51:34 +0000 (UTC) User-Agent: Gnus (www.gnus.org), GNU Emacs (www.gnu.org/software/emacs/) Cc: 25684@debbugs.gnu.org To: Wilfred Hughes Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Feb 13 22:51:29 2017 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 1cdOWs-0001cu-JD for geb-bug-gnu-emacs@m.gmane.org; Mon, 13 Feb 2017 22:51:26 +0100 Original-Received: from localhost ([::1]:59736 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cdOWy-0003DU-8B for geb-bug-gnu-emacs@m.gmane.org; Mon, 13 Feb 2017 16:51:32 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:46611) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cdODC-00015B-6d for bug-gnu-emacs@gnu.org; Mon, 13 Feb 2017 16:31:07 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cdOD8-00030k-74 for bug-gnu-emacs@gnu.org; Mon, 13 Feb 2017 16:31:06 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:40715) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cdOD8-00030e-3j for bug-gnu-emacs@gnu.org; Mon, 13 Feb 2017 16:31:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1cdOD7-0002fU-VC for bug-gnu-emacs@gnu.org; Mon, 13 Feb 2017 16:31:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Glenn Morris Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 13 Feb 2017 21:31:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 25684 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 25684-submit@debbugs.gnu.org id=B25684.148702141210203 (code B ref 25684); Mon, 13 Feb 2017 21:31:01 +0000 Original-Received: (at 25684) by debbugs.gnu.org; 13 Feb 2017 21:30:12 +0000 Original-Received: from localhost ([127.0.0.1]:38914 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cdOCK-0002eV-6f for submit@debbugs.gnu.org; Mon, 13 Feb 2017 16:30:12 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:55385) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cdOCJ-0002e2-7R for 25684@debbugs.gnu.org; Mon, 13 Feb 2017 16:30:11 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cdOCD-0002px-1v for 25684@debbugs.gnu.org; Mon, 13 Feb 2017 16:30:06 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:37164) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cdOC8-0002o4-UF; Mon, 13 Feb 2017 16:30:00 -0500 Original-Received: from rgm by fencepost.gnu.org with local (Exim 4.82) (envelope-from ) id 1cdOC7-0000QZ-4m; Mon, 13 Feb 2017 16:29:59 -0500 X-Spook: Maritime domain awarenes Gazprom MS13 BART Artistic X-Ran: m@YC(#9OH4S<^y3yWwF.-}'Cj'D6?#-:#>$w.XeiT!Miyw5AihTS+avqpJ#5dKeP~k~B?c X-Hue: magenta X-Attribution: GM In-Reply-To: (Wilfred Hughes's message of "Sat, 11 Feb 2017 00:01:51 +0000") 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:129323 Archived-At: Wilfred Hughes wrote: > The elisp primitives downcase and upcase cause Emacs to segfault when > given a negative argument. For example, (downcase -1). > > I can reproduce this on Emacs 25.1 as well as on master. It occurs on > GNU/Linux but not on OS X. I can't reproduce this, but it seems to me that (downcase -1) should signal a wrong-type-argument error, since negative numbers are not characters. But I think there are probably subtleties here that I don't get. --- i/src/casefiddle.c +++ w/src/casefiddle.c @@ -41,7 +41,7 @@ if (NILP (XCHAR_TABLE (BVAR (current_buffer, downcase_table))->extras[1])) Fset_case_table (BVAR (current_buffer, downcase_table)); - if (INTEGERP (obj)) + if (NATNUMP (obj)) { int flagbits = (CHAR_ALT | CHAR_SUPER | CHAR_HYPER | CHAR_SHIFT | CHAR_CTL | CHAR_META);