Crash report
What happened?
A reproducer (in the format of Lib/tests/test_free_threading/xxx.py):
import unittest
from test.support import threading_helper
threading_helper.requires_working_threading(module=True)
class ItertoolsThreading(unittest.TestCase):
@threading_helper.reap_threads
def test_maketrans(self):
number_of_iterations = 10
number_of_attempts=100
for _ in range(number_of_iterations):
print(f'iteration {_}')
d = {2000: 'a'}
def work_iterator(dct):
for idx in range(number_of_attempts):
str.maketrans(dct)
idx = 2000 + idx # outside range of small ints
dct[idx] = chr(idx%16)
dct.pop(idx, None)
threading_helper.run_concurrently(work_iterator, nthreads=10, args=[d])
if __name__ == "__main__":
unittest.main()
print('done')At first glance it seems that the iteration using PyDict_Next is not safe (but maybe there are more unsafe parts):
|
while (PyDict_Next(x, &i, &key, &value)) { |
(found when reviewing #145129)
CPython versions tested on:
CPython main branch
Operating systems tested on:
Windows
Output from running 'python -VV' on the command line:
No response
Linked PRs
Crash report
What happened?
A reproducer (in the format of
Lib/tests/test_free_threading/xxx.py):At first glance it seems that the iteration using
PyDict_Nextis not safe (but maybe there are more unsafe parts):cpython/Objects/unicodeobject.c
Line 13158 in 24cc998
(found when reviewing #145129)
CPython versions tested on:
CPython main branch
Operating systems tested on:
Windows
Output from running 'python -VV' on the command line:
No response
Linked PRs