[issue3660] reference leaks in test_distutils

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

> test_distutils will be difficult; the leak is around the "import xx" in
> Lib/distutils/tests/test_build_ext.py.
> 
> And Python/import.c says:
> /* To prevent initializing an extension module more than once, we keep a
> static dictionary 'extensions' keyed [...] by filename (for dynamically
> loaded modules). A copy of the module's dictionary is stored [...] 
> */
> 
> This dictionary keeps growing with random filenames in the temp
> directory. I can't see a way to clean it.

If it's just that (one leaked string per each extension module import),
I think we can live with it.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue3660>
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