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GH-102818: Do not call PyTraceBack_Here in sys.settrace trampoline. (GH-104579)

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Mark Shannon 2023-05-19 12:40:48 +01:00 • committed by GitHub
parent 616fcad6e2
commit c26d03d5d6
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4 changed files with 89 additions and 4 deletions
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56
Lib/test/test_sys_settrace.py
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@ -1568,6 +1568,62 @@ class TraceTestCase(unittest.TestCase):
self.run_and_compare(func, EXPECTED_EVENTS)
def test_settrace_error(self):
raised = False
def error_once(frame, event, arg):
nonlocal raised
if not raised:
raised = True
raise Exception
return error
try:
sys._getframe().f_trace = error_once
sys.settrace(error_once)
len([])
except Exception as ex:
count = 0
tb = ex.__traceback__
print(tb)
while tb:
if tb.tb_frame.f_code.co_name == "test_settrace_error":
count += 1
tb = tb.tb_next
if count == 0:
self.fail("Traceback is missing frame")
elif count > 1:
self.fail("Traceback has frame more than once")
else:
self.fail("No exception raised")
finally:
sys.settrace(None)
@support.cpython_only
def test_testcapi_settrace_error(self):
# Skip this test if the _testcapi module isn't available.
_testcapi = import_helper.import_module('_testcapi')
try:
_testcapi.settrace_to_error([])
len([])
except Exception as ex:
count = 0
tb = ex.__traceback__
while tb:
if tb.tb_frame.f_code.co_name == "test_testcapi_settrace_error":
count += 1
tb = tb.tb_next
if count == 0:
self.fail("Traceback is missing frame")
elif count > 1:
self.fail("Traceback has frame more than once")
else:
self.fail("No exception raised")
finally:
sys.settrace(None)
def test_very_large_function(self):
# There is a separate code path when the number of lines > (1 << 15).
d = {}