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[3.11] Port regression test for issue GH-93592 (GH-96208) #96313

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Merged
markshannon merged 1 commit into from
Aug 26, 2022
Merged

[3.11] Port regression test for issue GH-93592 (GH-96208) #96313

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24 changes: 24 additions & 0 deletions Lib/test/test_coroutines.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
import pickle
import sys
import types
import traceback
import unittest
import warnings
from test import support
Expand Down Expand Up @@ -2207,6 +2208,29 @@ async def f():
with self.assertWarns(RuntimeWarning):
gen.cr_frame.clear()

def test_stack_in_coroutine_throw(self):
# Regression test for https://github.com/python/cpython/issues/93592
async def a():
return await b()

async def b():
return await c()

@types.coroutine
def c():
try:
# traceback.print_stack()
yield len(traceback.extract_stack())
except ZeroDivisionError:
# traceback.print_stack()
yield len(traceback.extract_stack())

coro = a()
len_send = coro.send(None)
len_throw = coro.throw(ZeroDivisionError)
# before fixing, visible stack from throw would be shorter than from send.
self.assertEqual(len_send, len_throw)


@unittest.skipIf(
support.is_emscripten or support.is_wasi,
Expand Down