New submission from STINNER Victor <vstin...@redhat.com>:
Attached bug.py does crash *randomly* on AArch64. The code is extract from ctypes.test.test_as_parameter.AsParamPropertyWrapperTestCase.test_callbacks test. Example with Python 2.7.15 and Python 3.6.8 on RHEL8: # python2 bug.py Illegal instruction (core dumped) [root@cav-thunderx2s-cn88xx-01 ~]# python3 bug.py ... OK [root@cav-thunderx2s-cn88xx-01 ~]# python3 bug.py Illegal instruction (core dumped) I can reproduce the crash on Python 2.7.16rc compiled manually: ./configure --enable-unicode=ucs4 --with-system-ffi && make RHEL8 currently uses libffi-3.1-18.el8.aarch64. (I tried optimization levels -O0, -O1, -O2, -O3: I am always able to *randomly* trigger the crash.) Original bug report, Python 2 crash on RHEL8: https://bugzilla.redhat.com/show_bug.cgi?id=1652930 -- I don't know if it's related but I also saw the following error which has been reported in bpo-30991. FAIL: test_pass_by_value (ctypes.test.test_structures.StructureTestCase) ---------------------------------------------------------------------- Traceback (most recent call last): File "/root/src/python-3.6.2/Lib/ctypes/test/test_structures.py", line 416, in test_pass_by_value self.assertEqual(s.first, 0xdeadbeef) AssertionError: 195948557 != 3735928559 ---------- components: Library (Lib) files: bug.py messages: 335847 nosy: vstinner priority: normal severity: normal status: open title: ctypes: test_ctypes test_callbacks() crash on AArch64 versions: Python 2.7, Python 3.6 Added file: https://bugs.python.org/file48149/bug.py _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue36024> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
