[Python-bugs-list] [ python-Bugs-484977 ] memory leaks with new style classes

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Bugs item #484977, was opened at 2001-11-23 12:27
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Category: Type/class unification
Group: Python 2.2
>Status: Closed
Resolution: Works For Me
Priority: 5
Submitted By: Thomas Heller (theller)
Assigned to: Thomas Heller (theller)
Summary: memory leaks with new style classes

Initial Comment:
This code leaks 19 references:

class X(object): pass

This code leaks 12 references:

class X(type): pass



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>Comment By: Thomas Heller (theller)
Date: 2001-11-27 11:58

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Guido is right - it were circular references cleaned up by 
the garbage collector.

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Comment By: Neal Norwitz (nnorwitz)
Date: 2001-11-24 10:04

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I just tried both lines with purify and it reported no leaks
on Solaris 8.

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Comment By: Guido van Rossum (gvanrossum)
Date: 2001-11-23 18:13

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Which version did you try? Which tool did you use?

I observed no memory growth for this program (with 2.2b2+):

  while 1:
    class C(object): pass
    class T(type): pass

so I conclude there's no leak.

There  may appear to be a leak, but this is due to circular
references and properly taken care of by the garbage
collector.

So, back to you -- you can either close this, or provide
more information and assign it back to me.


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Comment By: Thomas Heller (theller)
Date: 2001-11-23 12:30

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I forgot: 2.2b2, Windows 2000, debug build.

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