While debugging https://bugs.python.org/issue43921 on Windows, I got a traceback with a single frame and the frame line number is -1.
It looks like a Python 3.11 regression.
Mark, Guido: can it be related to recent optimization work done in the main branch?
See also bpo-44288 "unittest: _is_relevant_tb_level() fails because tb.tb_frame.f_globals=None".
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FAIL: test_pha_required_nocert (test.test_ssl.TestPostHandshakeAuth)
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ssl.SSLEOFError: EOF occurred in violation of protocol (_ssl.c:2522)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\vstinner\python\main\lib\test\test_ssl.py", line -1, in test_pha_required_nocert
AssertionError: "certificate required" does not match "EOF occurred in violation of protocol (_ssl.c:2522)"