Nick Coghlan added the comment:
Interrogating the thread state like that makes me wonder how this patch behaves
in the following scenario:
class MainError(Exception): pass
class SubError(Exception): pass
def yield_coro():
yield
coro = yield_coro()
coro.send(None)
try:
raise MainError
except MainError:
try:
coro.throw(SubError)
except SubError:
pass
raise
Also potentially worth exploring is this proposed architectural change from
Mark Shannon to move all exception related state out of frame objects:
http://bugs.python.org/issue13897
While we couldn't do the latter in a maintenance release, I'd be interested to
know what effect it has on this edge case.
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<http://bugs.python.org/issue25612>
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