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#23912: 25.0.95; Abort in gc when working with streams Date: Wed, 13 Jul 2016 23:16:12 +0300 Message-ID: <83oa618far.fsf@gnu.org> References: <87wpkxtmwg.fsf@web.de> <83poqpjro0.fsf@gnu.org> <87oa6973hi.fsf@web.de> <7dcd2856-b9a4-9516-607a-1109d2be2dbc@yandex.ru> <874m81qj9t.fsf@web.de> <83a8hsk662.fsf@gnu.org> <87eg6y8qw4.fsf@web.de> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1468441045 24252 80.91.229.3 (13 Jul 2016 20:17:25 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 13 Jul 2016 20:17:25 +0000 (UTC) Cc: 23912@debbugs.gnu.org To: Michael Heerdegen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Jul 13 22:17:14 2016 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 1bNQan-0006jF-W6 for geb-bug-gnu-emacs@m.gmane.org; Wed, 13 Jul 2016 22:17:14 +0200 Original-Received: from localhost ([::1]:49756 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bNQam-0007zo-Pu for geb-bug-gnu-emacs@m.gmane.org; Wed, 13 Jul 2016 16:17:12 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:48205) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bNQag-0007zi-9o for bug-gnu-emacs@gnu.org; Wed, 13 Jul 2016 16:17:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bNQac-00011N-4L for bug-gnu-emacs@gnu.org; Wed, 13 Jul 2016 16:17:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:37842) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bNQac-00011J-0t for bug-gnu-emacs@gnu.org; Wed, 13 Jul 2016 16:17:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1bNQab-00053C-Sm for bug-gnu-emacs@gnu.org; Wed, 13 Jul 2016 16:17:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 13 Jul 2016 20:17:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 23912 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 23912-submit@debbugs.gnu.org id=B23912.146844101419398 (code B ref 23912); Wed, 13 Jul 2016 20:17:01 +0000 Original-Received: (at 23912) by debbugs.gnu.org; 13 Jul 2016 20:16:54 +0000 Original-Received: from localhost ([127.0.0.1]:50179 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bNQaU-00052n-1e for submit@debbugs.gnu.org; Wed, 13 Jul 2016 16:16:54 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:57174) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bNQaQ-00052Z-N9 for 23912@debbugs.gnu.org; Wed, 13 Jul 2016 16:16:53 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bNQaI-0000za-0Q for 23912@debbugs.gnu.org; Wed, 13 Jul 2016 16:16:45 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:60460) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bNQaH-0000zV-TX; Wed, 13 Jul 2016 16:16:41 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:1231 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1bNQaE-0000iE-3U; Wed, 13 Jul 2016 16:16:40 -0400 In-reply-to: <87eg6y8qw4.fsf@web.de> (message from Michael Heerdegen on Tue, 12 Jul 2016 23:53:31 +0200) 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:121030 Archived-At: > From: Michael Heerdegen > Cc: 23912@debbugs.gnu.org > Date: Tue, 12 Jul 2016 23:53:31 +0200 > > #0 0x00007ffff1930c19 in raise () from /lib/x86_64-linux-gnu/libpthread.so.0 > #1 0x000000000054d2fe in terminate_due_to_signal (sig=6, backtrace_limit=40) at emacs.c:381 > #2 0x00000000005715d9 in emacs_abort () at sysdep.c:2247 > #3 0x00000000005c9c1d in garbage_collect_1 (end=0x7fffffff5868) at alloc.c:5662 > #4 0x00000000005ca55d in Fgarbage_collect () at alloc.c:5979 > #5 0x000000000054afbc in maybe_gc () at lisp.h:4654 I don't understand how this could have happened. The only place that sets abort_on_gc true is prin1-to-string, but it is not in the backtrace. So somehow that setting was not reset at the end of prin1-to-string, and it looks like the only way that could have happened is if some code triggered by prin1-to-string set throw-on-input or called while-no-input. Is this likely to have happened during what you did? Does anyone know/remember why we cannot allow GC during prin1-to-string? I'm not sure I understand why we do that, and the comments don't help.