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gh-98458: unittest: bugfix for infinite loop while handling chained e…
…xceptions that contain cycles (#98459) * Bugfix addressing infinite loop while handling self-referencing chained exception in TestResult._clean_tracebacks() * Bugfix extended to properly handle exception cycles in _clean_tracebacks. The "seen" set follows the approach used in the TracebackException class (thank you @iritkatriel for pointing it out) * adds a test for a single chained exception that holds a self-loop in its __cause__ and __context__ attributes
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Misc/NEWS.d/next/Library/2022-10-19-18-31-53.gh-issue-98458.vwyq7O.rst
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Fix infinite loop in unittest when a self-referencing chained exception is raised |