New submission from Antoine Pitrou <pit...@free.fr>:
As mentioned in issue7060, weak dict iterators are easily broken by
cyclic garbage collection changing the size of the underlying dict storage:
File "/home/rdmurray/python/py3k/Lib/weakref.py", line 121, in items
for wr in self.data.values():
RuntimeError: dictionary changed size during iteration
One possible solution is to delay all removals until all iterators are
done. Here is a context manager-based solution.
----------
components: Library (Lib)
files: weakiter.patch
keywords: patch
messages: 93863
nosy: pitrou
priority: normal
severity: normal
stage: patch review
status: open
title: weak dict iterators are fragile because of unpredictable GC runs
type: behavior
versions: Python 3.1, Python 3.2
Added file: http://bugs.python.org/file15103/weakiter.patch
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<http://bugs.python.org/issue7105>
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