[pylucene-dev] Infinite recursion causes segfault

Pete pfein at pobox.com
Sat Mar 8 11:05:00 PST 2008


On Saturday March 8 2008 12:44:49 pm Andi Vajda wrote:
> Try initVM(vmargs='-Xrs') which affects how java uses signals. Another
> thing that could affect this is how much stack you give java with -Xms
> (also maxstack) increasing it may give you your Python exception back.

No dice:

n [1]: import lucene

In [2]: lucene.initVM(lucene.CLASSPATH, vmargs='-Xrs')
Out[2]: <jcc.JCCEnv object at 0xb7e21300>

In [3]: def f():
   ...:     return f()
   ...:

In [4]: f()
Segmentation fault (core dumped)

While I recognize that the presence of infinite recurusion is likely to be a 
bug in python code, dumping core here makes debugging almost impossible.  I 
spent almost an hour looking for stray threads / extension conflicts before 
happening to see the bug in my python code (missing super() call).

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