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#33034: `unwind-protect' cleanup form is not executed if body dies in stack overflow Date: Sat, 13 Oct 2018 14:29:57 +0300 Message-ID: <83efcuulsa.fsf@gnu.org> References: <83k1mmuoli.fsf@gnu.org> <83in26unu5.fsf@gnu.org> <83ftxaun4j.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1539430150 11358 195.159.176.226 (13 Oct 2018 11:29:10 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 13 Oct 2018 11:29:10 +0000 (UTC) Cc: 33034@debbugs.gnu.org To: pogonyshev@gmail.com Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Oct 13 13:29:06 2018 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 1gBI6T-0002tO-Kt for geb-bug-gnu-emacs@m.gmane.org; Sat, 13 Oct 2018 13:29:05 +0200 Original-Received: from localhost ([::1]:44576 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gBI8a-0004rZ-30 for geb-bug-gnu-emacs@m.gmane.org; Sat, 13 Oct 2018 07:31:16 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:46625) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gBI8P-0004rT-UT for bug-gnu-emacs@gnu.org; Sat, 13 Oct 2018 07:31:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gBI8M-0007yC-M8 for bug-gnu-emacs@gnu.org; Sat, 13 Oct 2018 07:31:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:43557) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1gBI8M-0007xo-HE for bug-gnu-emacs@gnu.org; Sat, 13 Oct 2018 07:31:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1gBI8M-0003sc-Cv for bug-gnu-emacs@gnu.org; Sat, 13 Oct 2018 07:31:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 13 Oct 2018 11:31:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 33034 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 33034-submit@debbugs.gnu.org id=B33034.153943020711886 (code B ref 33034); Sat, 13 Oct 2018 11:31:02 +0000 Original-Received: (at 33034) by debbugs.gnu.org; 13 Oct 2018 11:30:07 +0000 Original-Received: from localhost ([127.0.0.1]:47814 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gBI7P-00032F-3T for submit@debbugs.gnu.org; Sat, 13 Oct 2018 07:30:06 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:36893) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gBI7N-00031C-Mp for 33034@debbugs.gnu.org; Sat, 13 Oct 2018 07:30:02 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gBI7F-0007Ry-56 for 33034@debbugs.gnu.org; Sat, 13 Oct 2018 07:29:56 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:57140) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gBI7F-0007Ru-1V; Sat, 13 Oct 2018 07:29:53 -0400 Original-Received: from [176.228.60.248] (port=3824 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1gBI7E-0005er-JS; Sat, 13 Oct 2018 07:29:52 -0400 In-reply-to: <83ftxaun4j.fsf@gnu.org> (message from Eli Zaretskii on Sat, 13 Oct 2018 14:01:00 +0300) 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:151215 Archived-At: > Date: Sat, 13 Oct 2018 14:01:00 +0300 > From: Eli Zaretskii > Cc: 33034@debbugs.gnu.org > > > I haven't looked into the source code, but it seems that these > > examples don't involve C-level stack overflow. > > You are right, this issue is unrelated to C stack overflow. What actually happens here is that the cleanup form _is_ called, but it again hits the limit of Lisp local bindings, and therefore itself signals an error. And unwind-protect does not protect cleanup forms (this is documented).