[Zope-dev] Strange "Bug" in Scripts (Python) and Python code ...

[Joachim Werner]

Hi!

I just had a very strange problem. I tried some code like this in a Script
(Python). The (obvious) error in the code is the html += instead of just
html =.
These few lines brought the Zope server (and the Browser I used for testing)
to a halt:

html = ''
for letter in 'ABCDEFGHIJKLMNOPQRSTUVWXYZ':
    html += '|'.join([html, letter])
return html

After a very long time I got a Memory Error. I am not really sure whether
this qualifies as a bug, and whether it is a Zope bug or a Python bug (the
same happens when using the same code from filesystem-based Python). But I'd
guess that code fragments in Scripts (Python) should be save enough to not
blow the server. Other memory-intensive potentially malicious code like
infinite recursions are handled well after all.

Any comments?

_______________________________

Joachim Werner

iuveno AG
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Tel. +49 (0) 911 / 988398-4
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Mail: joachim.werner@iuveno.de
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