[issue29306] Check usage of Py_EnterRecursiveCall() and Py_LeaveRecursiveCall() in new FASTCALL functions

[STINNER Victor]

STINNER Victor added the comment:

I still need to backport fixes to Python 3.6, maybe even Python 3.5.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29306>
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