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Description
On a Free Threaded build:
$ ./configure --with-pydebug --disable-gil
$ make
$ ./python -m test test_opcache --forever -v
Error 1 (easy to reproduce):
FAIL: test_load_global_module (test.test_opcache.TestRacesDoNotCrash.test_load_global_module)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/vstinner/python/main/Lib/test/test_opcache.py", line 1048, in test_load_global_module
self.assert_races_do_not_crash(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
opname, get_items, read, write, check_items=True
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/home/vstinner/python/main/Lib/test/test_opcache.py", line 590, in assert_races_do_not_crash
self.assert_specialized(item, opname)
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
File "/home/vstinner/python/main/Lib/test/test_opcache.py", line 23, in assert_specialized
self.assertIn(opname, opnames)
~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
AssertionError: 'LOAD_GLOBAL_MODULE' not found in {'LOAD_GLOBAL', 'RESUME_CHECK', 'RETURN_VALUE'}
Error 2 (crash, harder to reproduce):
test_load_attr_method_with_values (test.test_opcache.TestRacesDoNotCrash.test_load_attr_method_with_values) ...
Fatal Python error: Segmentation fault
<Cannot show all threads while the GIL is disabled>
Stack (most recent call first):
File "/home/vstinner/python/main/Lib/test/test_opcache.py", line 913 in write
File "/home/vstinner/python/main/Lib/threading.py", line 1021 in run
File "/home/vstinner/python/main/Lib/threading.py", line 1079 in _bootstrap_inner
File "/home/vstinner/python/main/Lib/threading.py", line 1041 in _bootstrap
Current thread's C stack trace (most recent call first):
Binary file "./python", at _Py_DumpStack+0x31 [0x6715c7]
Binary file "./python" [0x684547]
Binary file "./python" [0x6847bd]
Binary file "/lib64/libc.so.6", at +0x19df0 [0x7f95d056bdf0]
Binary file "./python", at _Py_Dealloc+0x18 [0x4e7a28]
Binary file "./python", at _Py_MergeZeroLocalRefcount+0x58 [0x4e7b3e]
Binary file "./python" [0x50f410]
Binary file "./python" [0x51db0a]
Binary file "./python", at _PyObject_GenericSetAttrWithDict+0xa3 [0x4e9e77]
Binary file "./python", at PyObject_GenericSetAttr+0xe [0x4ea0dd]
Binary file "./python", at PyObject_SetAttr+0x60 [0x4e8f5f]
Binary file "./python", at PyObject_DelAttr+0xe [0x4e92fb]
Binary file "./python", at _PyEval_EvalFrameDefault+0xed7b [0x5ce860]
(...)
<truncated rest of calls>
Extension modules: _testinternalcapi (total: 1)