Instead of trying random possibly related patches, why don't you use a debugger and find out exactly what is going wrong? From your report it doesn't seem that you have tried to do so already (apologies if you did and I missed the hint).
On Thu, Nov 28, 2019 at 7:41 AM Peter Morrow via Python-Dev < python-dev@python.org> wrote: > Hi Folks, > > Python-dev seemed to be the most appropriate email alias for this, > though please do point me somewhere else if this is not appropriate. > > We are using a custom arm64 based distro built using yocto and as such > we are currently using python 3.5.6. We are hitting a failure in a > python3 test case qemu running under QEMU that we would like to try to > resolve if possible: > > root@10:/usr/lib/python3.5# python3 --version > Python 3.5.6 > root@10:/usr/lib/python3.5# python3 ctypes/test/test_structures.py > .................F....s..... > ====================================================================== > FAIL: test_pass_by_value (__main__.StructureTestCase) > ---------------------------------------------------------------------- > Traceback (most recent call last): > File "ctypes/test/test_structures.py", line 419, in > test_pass_by_value > self.assertEqual(s.first, 0xdeadbeef) > AssertionError: 195948557 != 3735928559 > > ---------------------------------------------------------------------- > Ran 28 tests in 0.457s > > FAILED (failures=1, skipped=1) > root@10:/usr/lib/python3.5# > > From searching the web I came across this bug which appears to match > what we are seeing: > > https://bugs.python.org/issue29804 ("test_ctypes test_pass_by_value > fails on arm64 (aarch64) architecture"). > However it looks like this fix is already in 3.5.6 so this isn't it. > > Next set of searching led me here: > > https://bugs.python.org/issue30353 and thus this patch: > > > https://github.com/python/cpython/commit/9ba3aa4d02a110d1a1ea464a8aff3be7dd9c63c3 > > So I applied this patch but we end up with this now: > > root@10:~# cd /usr/lib/python3.5/ > root@10:/usr/lib/python3.5# python3 ctypes/test/test_structures.py > Traceback (most recent call last): > File "ctypes/test/test_structures.py", line 2, in <module> > from ctypes import * > File "/usr/lib/python3.5/ctypes/__init__.py", line 7, in <module> > from _ctypes import Union, Structure, Array > ImportError: No module named '_ctypes' > root@10:/usr/lib/python3.5# > > > Can anyone help point me in the right direction with this failure we > are seeing? We are stuck with python 3.5.6 for now due to the version of > yocto we are using, though I'm concerned since this seems to be a fairly > fundamental issue which is being exposed by this testcase. > > Do let me know if you require any more information from me. > > > Many Thanks, > Peter. > _______________________________________________ > Python-Dev mailing list -- python-dev@python.org > To unsubscribe send an email to python-dev-le...@python.org > https://mail.python.org/mailman3/lists/python-dev.python.org/ > Message archived at > https://mail.python.org/archives/list/python-dev@python.org/message/4QSCCSWUU76IYSARXKYKV7PHJKYA26BL/ > Code of Conduct: http://python.org/psf/codeofconduct/ > -- --Guido van Rossum (python.org/~guido) *Pronouns: he/him **(why is my pronoun here?)* <http://feministing.com/2015/02/03/how-using-they-as-a-singular-pronoun-can-change-the-world/>
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