seen with 3.7,3, not 3.8 alpha3.

bus error in test_gil test on armhf with 64bit kernel, one more unaligned access. not seen in debug builds.

https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-disco/disco/armhf/p/python3.7/20190327_025457_8b623@/log.gz

test_extra_sha3 (test.test_hashlib.HashLibTestCase) ... ok
test_get_builtin_constructor (test.test_hashlib.HashLibTestCase) ... ok
test_gil (test.test_hashlib.HashLibTestCase) ... Fatal Python error: Bus error

Current thread 0xf7bcd210 (most recent call first):
  File "/usr/lib/python3.7/test/test_hashlib.py", line 788 in test_gil
  File "/usr/lib/python3.7/unittest/case.py", line 615 in run
  File "/usr/lib/python3.7/unittest/case.py", line 663 in __call__
  File "/usr/lib/python3.7/unittest/suite.py", line 122 in run
  File "/usr/lib/python3.7/unittest/suite.py", line 84 in __call__
  File "/usr/lib/python3.7/unittest/suite.py", line 122 in run
  File "/usr/lib/python3.7/unittest/suite.py", line 84 in __call__
  File "/usr/lib/python3.7/unittest/suite.py", line 122 in run
  File "/usr/lib/python3.7/unittest/suite.py", line 84 in __call__
  File "/usr/lib/python3.7/unittest/runner.py", line 176 in run
  File "/usr/lib/python3.7/test/support/__init__.py", line 1899 in _run_suite
  File "/usr/lib/python3.7/test/support/__init__.py", line 1995 in run_unittest
  File "/usr/lib/python3.7/test/libregrtest/runtest.py", line 178 in test_runner
  File "/usr/lib/python3.7/test/libregrtest/runtest.py", line 182 in runtest_inner
  File "/usr/lib/python3.7/test/libregrtest/runtest.py", line 137 in runtest
  File "/usr/lib/python3.7/test/libregrtest/main.py", line 305 in rerun_failed_tests
  File "/usr/lib/python3.7/test/libregrtest/main.py", line 623 in _main
  File "/usr/lib/python3.7/test/libregrtest/main.py", line 586 in main
  File "/usr/lib/python3.7/test/libregrtest/main.py", line 640 in main
  File "/usr/lib/python3.7/test/__main__.py", line 2 in <module>
  File "/usr/lib/python3.7/runpy.py", line 85 in _run_code
  File "/usr/lib/python3.7/runpy.py", line 193 in _run_module_as_main
Bus error (core dumped)