importqueueimportthreadingimportrequestsclassHyperlinkAvailabilityCheckWorker(threading.Thread):def__init__(self,rqueue,wqueue)->None:self.rqueue=rqueueself.wqueue=wqueueself._session=requests.Session()super().__init__(daemon=True)defrun(self)->None:whileTrue:uri=self.wqueue.get()ifnoturi:self._session.close()breakself._session.request('HEAD',url=uri,timeout=30,verify=True,            )self.rqueue.put(uri)self.wqueue.task_done()deftest_crash():foriinrange(1_000):print(f'loop:{i}')# setuprqueue=queue.Queue()wqueue=queue.Queue()workers:list[HyperlinkAvailabilityCheckWorker]= []# invoke threadsnum_workers=2for_inrange(num_workers):thread=HyperlinkAvailabilityCheckWorker(rqueue,wqueue)thread.start()workers.append(thread)# checktotal_links=0forhyperlinkin ('https://python.org/dev/','https://peps.python.org/pep-0008/',        ):wqueue.put(hyperlink,False)total_links+=1done=0whiledone<total_links:result=rqueue.get()print(result)done+=1# shutdown_threadswqueue.join()for_workerinworkers:wqueue.put('',False)if__name__=='__main__':importsysprint(f'GIL enabled?:{sys._is_gil_enabled()}')print()test_crash()

GIL enabled?: Falseloop: 0https://peps.python.org/pep-0008/https://python.org/dev/loop: 1https://peps.python.org/pep-0008/https://python.org/dev/loop: 2https://peps.python.org/pep-0008/https://python.org/dev/loop: 3Fatal Python error: Segmentation faultThread 0x00007f3dc5e00640 (most recent call first):  File "/usr/lib/python3.13/ssl.py", line 513 in set_alpn_protocols  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/urllib3/util/ssl_.py", line 467 in ssl_wrap_socket  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/urllib3/connection.py", line 909 in _ssl_wrap_socket_and_match_hostname  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/urllib3/connection.py", line 730 in connect  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/urllib3/connectionpool.py", line 1095 in _validate_conn  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/urllib3/connectionpool.py", line 466 in _make_request  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/urllib3/connectionpool.py", line 789 in urlopen  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/requests/adapters.py", line 667 in send  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/requests/sessions.py", line 703 in send  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/requests/sessions.py", line 589 in request  File "/home/runner/work/sphinx/sphinx/./tests/test_build.py", line 21 in run  File "/usr/lib/python3.13/threading.py", line 1041 in _bootstrap_inner  File "/usr/lib/python3.13/threading.py", line 1012 in _bootstrapCurrent thread 0x00007f3dbfe00640 (most recent call first):  File "/usr/lib/python3.13/ssl.py", line 1372 in do_handshake  File "/usr/lib/python3.13/ssl.py", line 1076 in _create  File "/usr/lib/python3.13/ssl.py", line 455 in wrap_socket  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/urllib3/util/ssl_.py", line 513 in _ssl_wrap_socket_impl  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/urllib3/util/ssl_.py", line 469 in ssl_wrap_socket  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/urllib3/connection.py", line 909 in _ssl_wrap_socket_and_match_hostname  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/urllib3/connection.py", line 730 in connect  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/urllib3/connectionpool.py", line 1095 in _validate_conn  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/urllib3/connectionpool.py", line 466 in _make_request  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/urllib3/connectionpool.py", line 789 in urlopen  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/requests/adapters.py", line 667 in send  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/requests/sessions.py", line 703 in send  File "/home/runner/venv-3.13/lib/python3.13t/site-packages/requests/sessions.py", line 589 in request  File "/home/runner/work/sphinx/sphinx/./tests/test_build.py", line 21 in run  File "/usr/lib/python3.13/threading.py", line 1041 in _bootstrap_inner  File "/usr/lib/python3.13/threading.py", line 1012 in _bootstrapThread 0x00007f3dc9140000 (most recent call first):  File "/usr/lib/python3.13/threading.py", line 359 in wait  File "/usr/lib/python3.13/queue.py", line 202 in get  File "/home/runner/work/sphinx/sphinx/./tests/test_build.py", line 58 in test_crash  File "/home/runner/work/sphinx/sphinx/./tests/test_build.py", line 73 in <module>/home/runner/work/_temp/f534164e-5195-4157-abd9-f2f4e6fed6dd.sh: line 5:  2783 Segmentation fault      (core dumped) python -u ./tests/test_build.py

(lldb) bt* thread #6, stop reason = signal SIGABRT  * frame #0: 0x0000000194852a60 libsystem_kernel.dylib`__pthread_kill + 8    frame #1: 0x000000019488ac20 libsystem_pthread.dylib`pthread_kill + 288    frame #2: 0x0000000194797a30 libsystem_c.dylib`abort + 180    frame #3: 0x00000001946a7dc4 libsystem_malloc.dylib`malloc_vreport + 896    frame #4: 0x00000001946ab430 libsystem_malloc.dylib`malloc_report + 64    frame #5: 0x00000001946c5494 libsystem_malloc.dylib`find_zone_and_free + 528    frame #6: 0x0000000100871448 libssl.3.dylib`SSL_CTX_set_alpn_protos + 180    frame #7: 0x000000010075e5d0 _ssl.cpython-313t-darwin.so`_ssl__SSLContext__set_alpn_protocols [inlined] _ssl__SSLContext__set_alpn_protocols_impl(self=0x0000028ca0798f30, protos=0x0000000172eaa3e0) at _ssl.c:3381:9 [opt]    frame #8: 0x000000010075e59c _ssl.cpython-313t-darwin.so`_ssl__SSLContext__set_alpn_protocols(self=0x0000028ca0798f30, arg=<unavailable>) at _ssl.c.h:528:20 [opt]    frame #9: 0x0000000100066354 python`method_vectorcall_O(func=0x0000028ca09bec90, args=0x00000001005ecc20, nargsf=<unavailable>, kwnames=<unavailable>) at descrobject.c:475:24 [opt]    frame #10: 0x00000001000585d0 python`PyObject_Vectorcall [inlined] _PyObject_VectorcallTstate(tstate=0x000000010380a600, callable=0x0000028ca09bec90, args=<unavailable>, nargsf=<unavailable>, kwnames=<unavailable>) at pycore_call.h:168:11 [opt]    frame #11: 0x00000001000585a8 python`PyObject_Vectorcall(callable=0x0000028ca09bec90, args=<unavailable>, nargsf=<unavailable>, kwnames=<unavailable>) at call.c:327:12 [opt]    frame #12: 0x0000000100194098 python`_PyEval_EvalFrameDefault(tstate=<unavailable>, frame=<unavailable>, throwflag=<unavailable>) at generated_cases.c.h:813:23 [opt]

python(84085,0x172eab000) malloc: *** error for object 0x600000840000: pointer being freed was not allocatedpython(84085,0x172eab000) malloc: *** set a breakpoint in malloc_error_break to debug