Bugs item #1069092, was opened at 2004-11-19 00:31 Message generated for change (Comment added) made by birkenfeld You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1069092&group_id=5470
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Interpreter Core Group: Python 2.3 Status: Open Resolution: None Priority: 5 Submitted By: Jonas Kölker (jonaskoelker) Assigned to: Nobody/Anonymous (nobody) Summary: segfault on printing nested sequences of None/Ellipsis Initial Comment: ## bug1.py loop = None, while True: loop = loop, None bash$ python -i bug1.py (I press C-c) >>> print loop ((((((((((((((((( <skipping a large amount of parens for brevity> (((((((((segfault bash$ bash$ python -i bug1.py (I press C-c) >>> str(loop) segfault bash$ bash$ python -i bug1.py (I press C-c) >>> repr(loop) segfault bash$ --- --- the results are the same for bug2.py, bug3.py and bug.py4 which have the same contents, except that loop is a list, None is replaced by Ellipsis or both. The behavior (i.e. segfaulting) is the same. also, when pressing C-c, python's memory usage remains constant. gc.garbage is empty; gc.collect() returns 0 and doesn't free memory. my python and uname: bash$ python Python 2.3.4 (#2, Sep 24 2004, 08:39:09) [GCC 3.3.4 (Debian 1:3.3.4-12)] on linux2 bash$ uname --all Linux koelker 2.4.18-bf2.4 #1 Son Apr 14 09:53:28 CEST 2002 i686 GNU/Linux I have also reproduced it on Python 2.3.3 (#1, May 7 2004, 10:31:40) [GCC 3.3.3 20040412 (Red Hat Linux 3.3.3-7)] on linux2 bash$ uname --all Linux horse09 2.6.8-1.521smp #1 SMP Man Aug 16 09:25:06 EDT 2004 i686 i686 i386 GNU/Linux and on Python 2.4a3 (#1, Oct 3 2004, 12:05:12) [GCC 3.3.2] on linux2 (on the same machine) it didn't reproduce on Python 1.5.2 (#1, Mar 9 2000, 17:40:34) [GCC 2.95.2 19991024 (release)] on hp-uxB bash$ uname -a HP-UX aragorn B.11.11 U 9000/782 2006786478 unlimited-user license but it did on Python 1.5.2 (#1, Jul 5 2001, 03:02:19) [GCC 2.96 20000731] (Red Hat Linux 7.1 2 on linux-i386 bash$ uname Linux legolas 2.4.20-20.7smp #1 SMP Mon Aug 18 14:46:14 EDT 2003 i686 unknown ---------------------------------------------------------------------- >Comment By: Reinhold Birkenfeld (birkenfeld) Date: 2005-09-15 12:56 Message: Logged In: YES user_id=1188172 I can reproduce this here on Linux with 100000x None. Will try to investigate. ---------------------------------------------------------------------- Comment By: Terry J. Reedy (tjreedy) Date: 2004-11-24 08:43 Message: Logged In: YES user_id=593130 On <<<Python 2.2.1 (#34, Apr 9 2002, 19:34:33) [MSC 32 bit (Intel)] on win32>>> I got (interactive mode, about 5 sec before ^C) appropriate output: (((((((((((((((((((((((((((((((((((((((((((((((((((((( Traceback (most recent call last): File "<stdin>", line 1, in ? MemoryError: stack overflow The nested depth was >>> i=0 >>> while loop: loop,i = loop[0], i+1 ... >>> i 50695 Note: a test case would need a finite loop such as: for i in range(100000) instead of while True (until ^C pressed). ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1069092&group_id=5470 _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
