From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size" Date: Thu, 13 Oct 2016 09:19:48 +0300 Message-ID: <831szkahyz.fsf@gnu.org> References: <87twe6sx2g.fsf@users.sourceforge.net> <87eg51ng4r.fsf_-_@users.sourceforge.net> <87k2djwumn.fsf@users.sourceforge.net> <83h98nidvd.fsf@gnu.org> <87eg3rvtsf.fsf@users.sourceforge.net> <83k2dihpm9.fsf@gnu.org> <8760p2wzgj.fsf@users.sourceforge.net> <838ttyhhzu.fsf@gnu.org> <871szqwu51.fsf@users.sourceforge.net> <831szqhbc2.fsf@gnu.org> <87h98hujcx.fsf@users.sourceforge.net> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1476339689 24548 195.159.176.226 (13 Oct 2016 06:21:29 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 13 Oct 2016 06:21:29 +0000 (UTC) Cc: 24358@debbugs.gnu.org, peder@klingenberg.no To: npostavs@users.sourceforge.net Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Oct 13 08:21:25 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 1buZOE-0004fB-PU for geb-bug-gnu-emacs@m.gmane.org; Thu, 13 Oct 2016 08:21:14 +0200 Original-Received: from localhost ([::1]:37873 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1buZOF-00069w-6X for geb-bug-gnu-emacs@m.gmane.org; Thu, 13 Oct 2016 02:21:15 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:49344) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1buZO6-00067w-5d for bug-gnu-emacs@gnu.org; Thu, 13 Oct 2016 02:21:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1buZO2-0007N6-00 for bug-gnu-emacs@gnu.org; Thu, 13 Oct 2016 02:21:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:47471) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1buZO1-0007N2-So for bug-gnu-emacs@gnu.org; Thu, 13 Oct 2016 02:21:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1buZO1-000786-OL for bug-gnu-emacs@gnu.org; Thu, 13 Oct 2016 02:21:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 13 Oct 2016 06:21:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 24358 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 24358-submit@debbugs.gnu.org id=B24358.147633963327356 (code B ref 24358); Thu, 13 Oct 2016 06:21:01 +0000 Original-Received: (at 24358) by debbugs.gnu.org; 13 Oct 2016 06:20:33 +0000 Original-Received: from localhost ([127.0.0.1]:53661 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1buZNZ-000779-91 for submit@debbugs.gnu.org; Thu, 13 Oct 2016 02:20:33 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:58249) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1buZNX-00076p-8W for 24358@debbugs.gnu.org; Thu, 13 Oct 2016 02:20:32 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1buZNO-00079g-Nz for 24358@debbugs.gnu.org; Thu, 13 Oct 2016 02:20:25 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:43306) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1buZN1-0006ws-AF; Thu, 13 Oct 2016 02:19:59 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:3965 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1buZMz-0001eG-BC; Thu, 13 Oct 2016 02:19:57 -0400 In-reply-to: <87h98hujcx.fsf@users.sourceforge.net> (npostavs@users.sourceforge.net) 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:124425 Archived-At: > From: npostavs@users.sourceforge.net > Cc: 24358@debbugs.gnu.org, peder@klingenberg.no > Date: Wed, 12 Oct 2016 21:29:34 -0400 > > > Anyway, the way to countermand this is to record in a local variable > > the offset from beginning of buffer text to the value of the C pointer > > before the call to record_xmalloc, then apply the offset after the > > call to the new buffer text address. (Let me know if this is clear > > enough.) > > > > You can find an example of this in coding.c:decode_coding_emacs_mule > > (search for "relocated" in that function). > > This does involve passing down the lisp reference, right? Just want to > make sure I'm not missing something obvious before I start changing the > interface on a bunch of functions. Aren't we talking about searching buffer text in this case? If so, the start address of the buffer text is known globally, it is given by current_buffer->text->beg. You just need to calculate the difference between the start address before and after the call to malloc, or to a function that might call malloc. Alternatively (and more safely), save the value of PTR_BYTE_POS before the call to malloc, and restore the C text pointer after malloc with BYTE_POS_ADDR.