[pypy-issue] [issue1687] WeakValueDictionary and __del__

[Alexey]

Alexey <hellman1908 at gmail.com> added the comment:

I've minified this to only weakref.ref problem. It looks weird, because changing
this stuff makes bug disappear:
- iteration over 1 list element
- returning single object in list
- wrapping simple list stuff into a function so garbage collector can collect
stuff (and the problem is it collects the object which is not actually dead!)
- reassigning the same variable to another object with __del__ defined

Seems the problem is that somewhere refs are badly counted

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status: unread -> chatting

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<https://bugs.pypy.org/issue1687>
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