GNU bug report logs - #31362
stack overflow in GC when creating large nested object

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Mattias Engdegård <mattiase <at> acm.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#2099: closed (stack overflow in GC when creating large nested
 object)
Date: Mon, 04 Apr 2022 17:25:01 +0000

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Your message dated Mon, 4 Apr 2022 19:24:06 +0200
with message-id <9CD1BE2B-FBAA-4D3B-9E10-92A0458E0A63 <at> acm.org>
and subject line GC stack overflow fixed
has caused the debbugs.gnu.org bug report #31362,
regarding stack overflow in GC when creating large nested object
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
31362: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=31362
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Markus Triska <markus.triska <at> gmx.at>
To: emacs-pretest-bug <at> gnu.org
Subject: 23.0.60; `mark_object' with larger nested objects crashes Emacs
Date: Thu, 29 Jan 2009 00:06:45 +0100 (CET)

When you do:

   $ emacs -Q --eval "(let (v) (while t (setq v (cons v v))))"

then Emacs crashes with:

   Program received signal EXC_BAD_ACCESS, Could not access memory.
   Reason: KERN_INVALID_ADDRESS at address: 0xbf7ffffc
   0x0013bc1a in mark_object (arg=40166541) at alloc.c:5372
   (gdb) bt
   #0  0x0013bc1a in mark_object (arg=40166541) at alloc.c:5372
   #1  0x0013bdf8 in mark_object (arg=40166549) at alloc.c:5655
   #2  0x0013bdf8 in mark_object (arg=40166557) at alloc.c:5655
   #3  0x0013bdf8 in mark_object (arg=40166565) at alloc.c:5655
   #4  0x0013bdf8 in mark_object (arg=40166573) at alloc.c:5655
   #5  0x0013bdf8 in mark_object (arg=40166581) at alloc.c:5655
   #6  0x0013bdf8 in mark_object (arg=40166589) at alloc.c:5655
   ...

Throwing an error or making GC stackless seems much preferable here.

In GNU Emacs 23.0.60.1 (i386-apple-darwin8.11.1, GTK+ Version 2.12.9)
 of 2009-01-28 on mt-computer.local
Windowing system distributor `The XFree86 Project, Inc', version 11.0.40400000
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_GB.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default-enable-multibyte-characters: t

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From: Mattias Engdegård <mattiase <at> acm.org>
To: 31362-done <at> debbugs.gnu.org, 46900-done <at> debbugs.gnu.org
Cc: Noam Postavsky <npostavs <at> gmail.com>, Pip Cet <pipcet <at> gmail.com>,
 Tino Calancha <tino.calancha <at> gmail.com>
Subject: GC stack overflow fixed
Date: Mon, 4 Apr 2022 19:24:06 +0200

Now that bug#54698 is resolved, we can close bug#31362 and bug#46900 which seem to have been about that, essentially.

If that didn't do it for you, please let us know.

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