[Python-bugs-list] [ python-Bugs-613222 ] memory leaks when importing posix module

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Bugs item #613222, was opened at 2002-09-23 10:27
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Category: Python Interpreter Core
Group: Python 2.2
Status: Open
Resolution: None
Priority: 5
Submitted By: Neal Norwitz (nnorwitz)
Assigned to: Guido van Rossum (gvanrossum)
Summary: memory leaks when importing posix module

Initial Comment:
The attached program which calls
Py_Initialize/Py_Finalize in a loop demonstrates a
program which grows quite quickly.  This bug effects
2.2.1+ and 2.3.  valgrind reports that the memory is
still reachable, but it seems like a memory leak and
the process definitely grows.

Compile the program with libpython, and run (./mem-test
100000).  Make sure it can import site (which imports
posix module).  While the program is running, do a ps
and watch it grow.  If import site fails, the process
will not grow.

site.py can be as simple as import posix.
I believe the problem is related to
PyStructSequence_Fields for statfs.  But haven't
completely diagnosed the problem.  As I learn more, I
will add comments.

To simply importing or not importing site, mem-test
takes an optional 2nd argument which will
enable/disable loading of site.py.  ./mem-test 100000 1
will prevent import site.

I hope this is understandable, even though the
description wasn't clear.

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