New submission from Jared Lang <jsl...@mail.ucf.edu>:
Recursion within a thread on OSX can result in a crash by exceeding the systems
recursion limit. Recursion behaves as expected if not in thread, meaning it
throws a RunTimeError with the message "maximum recursion depth exceeded."
The crash is able to be avoided if the recursion limit is set to a lower
number, ie. 800, via sys.setrecursionlimit.
Example program which crashes on OSX:
>>> def f():
... return f()
...
>>> import threading
>>> thread = threading.Thread(target=f)
>>> thread.start()
Bus error
Alternatively, the following works as expected:
>>> import sys
>>> def f():
... return f()
...
>>> import threading
>>> thread = threading.Thread(target=f)
>>> sys.setrecursionlimit(800)
>>> thread.start()
>>> Exception in thread Thread-1:
Traceback (most recent call last):
File
"/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/threading.py",
line 532, in __bootstrap_inner
self.run()
File
"/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/threading.py",
line 484, in run
self.__target(*self.__args, **self.__kwargs)
File "<stdin>", line 2, in f
File "<stdin>", line 2, in f
File "<stdin>", line 2, in f
File "<stdin>", line 2, in f
File "<stdin>", line 2, in f
File "<stdin>", line 2, in f
...
RuntimeError: maximum recursion depth exceeded
----------
assignee: ronaldoussoren
components: Macintosh
messages: 114787
nosy: jaredlang, ronaldoussoren
priority: normal
severity: normal
status: open
title: Exceed Recursion Limit in Thread
type: crash
versions: Python 2.6
_______________________________________
Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue9670>
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