[issue15108] Incomplete tuple created by PyTuple_New() and accessed via the GC can trigged a crash

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

> That's a lot slower unfortunately

Ah sorry, I forgot PyTuple_Pack(3, item1, item2, item3) which should be very efficient. This function is also safe: only track the tuple when it is fully initialized.

> This problem also is not unique to tuples, although is mainly prominent in them.

PyList_New() is also affected. Do you think about other types?

PyDict_New() and PySet_New() create empty containers and so are ok.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue15108>
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