[issue8020] Crash in Py_ADDRESS_IN_RANGE macro

[Matt Bandy]

Matt Bandy <matt.bandy at thq.com> added the comment:

It's a pretty major limitation on the embedding case if you can't allow other threads that aren't related to Python to run at any time that another thread may be in obmalloc, and one I haven't seen documented anywhere.  The only other fix that occurs to me would be to ensure that any memory Python allocates is not in the same page as memory not allocated by Python, but that seems like it would be much more complex than the current "just call malloc()" solution.  Your proposed change to the macro sounds more reasonable to me.

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