[issue17611] Move unwinding of stack for "pseudo exceptions" from interpreter to compiler.

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

> With fixed deltas, it is not too hard to construct an algorithm to 
determine the correct stack size. The presence of JSR-style finally 
blocks complicates things a little, but not that much.

Any chance you can put that patch somewhere to get an idea of the additional complexity?

I'd like to gauge the total complexity of each approach including the stack size computation fix (since fixing that issue is one of the end goals).  Also, that would help compare your PR and Serhiy's on more equal terms.

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<https://bugs.python.org/issue17611>
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