[issue27987] obmalloc's 8-byte alignment causes undefined behavior

[Neil Schemenauer]

Neil Schemenauer <nas-python at arctrix.com> added the comment:

FYI, this would seem to be an incentive to get my "bitmaps for small GC objects" idea implemented.  I.e.

https://mail.python.org/pipermail/python-dev/2017-September/149307.html

If implemented, the extra size of the PyGC_Head would only apply to "large" objects.  In my prototype, I'm thinking of using 512 bytes as the size limit for small GC objects.

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nosy: +nascheme

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