Petr Viktorin <[email protected]> added the comment:
You are missing m_free.
The clear function is used to break reference counts. In this case, there are
no reference counts to be broken, so it is not called.
Your custom_clear function is idempotent, so you can use it in both free and
clear and let Python call it either once or twice:
.m_clear = custom_clear,
.m_free = custom_clear,
I agree that this is not at all clear from the documentation. I'm going to
spend some time organizing the info around the GC API and writing it up.
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nosy: +petr.viktorin
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