[issue40608] PY3.8 GC segfault (Py_TRASHCAN_SAFE_BEGIN/END are not backwards compatible)

[Irit Katriel]

Irit Katriel <iritkatriel at yahoo.com> added the comment:

Have you had a chance to look into this?

It took some debugging to get to the bottom of this problem in our system (nothing in the "what's new in python 3.8" doc gave any hint). 

The solution I went for was to replace the old macros with the new ones. If it's not easy or desirable to fix the old macros, should they not be removed?

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<https://bugs.python.org/issue40608>
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