Message 387825 - Python tracker

Thanks David!

So the crash only happens in debug mode?

PEP 651 promises to take reduce the C stack usage in the future. Therefore, I would be okay with rolling this back for the time being.
If we do roll it back, maybe add a comment to ceval.c explaining
that even in debug mode this file is optimized?

(The change to the pragma can stay, those two letters have been unused for a decade.)