[Bug 1620754] Re: python-cryptography ftbfs for 3.5 on armhf with a bus error

[James Page]

Even simpler reproducer:

>>> import datetime
>>> print(hash(datetime.datetime(2015, 1, 1, 1, 1)))
Bus error (core dumped)


** Also affects: python3.5 (Ubuntu)
   Importance: Undecided
       Status: New

** Summary changed:

- python-cryptography ftbfs for 3.5 on armhf with a bus error
+ python-cryptography ftbfs for 3.5 on armhf (on an arm64 host) with a bus error

** Changed in: python-cryptography (Ubuntu)
     Assignee: James Page (james-page) => (unassigned)

** Changed in: python-cryptography (Ubuntu)
       Status: In Progress => New

** Summary changed:

- python-cryptography ftbfs for 3.5 on armhf (on an arm64 host) with a bus error
+ hash(datetime.datetime(...)) fails on armhf (on an arm64 host) with a bus error

** Summary changed:

- hash(datetime.datetime(...)) fails on armhf (on an arm64 host) with a bus error
+ hash(datetime.datetime(...)) fails with python3.5 on armhf (on an arm64 host) with a bus error

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https://bugs.launchpad.net/bugs/1620754

Title:
  hash(datetime.datetime(...)) fails with python3.5 on armhf (on an
  arm64 host) with a bus error

Status in python-cryptography package in Ubuntu:
  New
Status in python3.5 package in Ubuntu:
  New

Bug description:
  seen with
  https://launchpad.net/ubuntu/+source/python-cryptography/1.4-2/+build/10476934
  https://launchpad.net/ubuntu/+source/python-cryptography/1.5-1/+build/10678695

  the TestInvalidityDate.test_invalid_invalidity_date test is the first
  one to fail with a bus error. No reasonable traceback from gdb.

  Trying to build python3.5, python-cffi and python-cryptography with
  -mno-unaligned-access doesn't fix the issue (buildds running on a
  64bit kernel).

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