[Bug 1367907] [NEW] Segfault in gc with cyclic trash

[Clark Boylan]

Public bug reported:

Trusty's python3.4 package is affected by python bug
http://bugs.python.org/issue21435. This bug was fixed in
http://hg.python.org/cpython/rev/64ba3f2de99c. Trusty should pull this
fix into the python3.4 package.

Note this definitely affects some python projects. `git clone
https://git.openstack.org/openstack/oslo.messaging && cd oslo.messaging
&& edit tox.ini file, copy py33 target and rename to py34 && tox
-repy34` will segfault due to this bug. With previous versions of python
unaffected by this bug there is no segfaulting.

Now for details:
$ lsb_release -rd
Description:	Ubuntu 14.04.1 LTS
Release:	14.04
$ apt-cache policy python3.4
python3.4:
  Installed: 3.4.0-2ubuntu1
  Candidate: 3.4.0-2ubuntu1
  Version table:
 *** 3.4.0-2ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

** Affects: oslo.messaging
     Importance: Undecided
     Assignee: Clark Boylan (cboylan)
         Status: New

** Affects: python
     Importance: Unknown
         Status: Unknown

** Affects: python3.4 (Ubuntu)
     Importance: Undecided
         Status: New

** Bug watch added: Python Roundup #21435
   http://bugs.python.org/issue21435

** Also affects: python via
   http://bugs.python.org/issue21435
   Importance: Unknown
       Status: Unknown

** Description changed:

  Trusty's python3.4 package is affected by python bug
  http://bugs.python.org/issue21435. This bug was fixed in
  http://hg.python.org/cpython/rev/64ba3f2de99c. Trusty should pull this
  fix into the python3.4 package.
  
  Note this definitely affects some python projects. `git clone
  https://git.openstack.org/openstack/oslo.messaging && cd oslo.messaging
- && tox -repy34` will segfault due to this bug. With previous versions of
- python unaffected by this bug there is no segfaulting.
+ && edit tox.ini file, copy py33 target and rename to py34 && tox
+ -repy34` will segfault due to this bug. With previous versions of python
+ unaffected by this bug there is no segfaulting.
  
  Now for details:
  $ lsb_release -rd
  Description:	Ubuntu 14.04.1 LTS
  Release:	14.04
  $ apt-cache policy python3.4
  python3.4:
-   Installed: 3.4.0-2ubuntu1
-   Candidate: 3.4.0-2ubuntu1
-   Version table:
-  *** 3.4.0-2ubuntu1 0
-         500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
-         100 /var/lib/dpkg/status
+   Installed: 3.4.0-2ubuntu1
+   Candidate: 3.4.0-2ubuntu1
+   Version table:
+  *** 3.4.0-2ubuntu1 0
+         500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
+         100 /var/lib/dpkg/status

** Also affects: oslo.messaging
   Importance: Undecided
       Status: New

-- 
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https://bugs.launchpad.net/bugs/1367907

Title:
  Segfault in gc with cyclic trash

Status in Messaging API for OpenStack:
  New
Status in Python:
  Unknown
Status in “python3.4” package in Ubuntu:
  New

Bug description:
  Trusty's python3.4 package is affected by python bug
  http://bugs.python.org/issue21435. This bug was fixed in
  http://hg.python.org/cpython/rev/64ba3f2de99c. Trusty should pull this
  fix into the python3.4 package.

  Note this definitely affects some python projects. `git clone
  https://git.openstack.org/openstack/oslo.messaging && cd
  oslo.messaging && edit tox.ini file, copy py33 target and rename to
  py34 && tox -repy34` will segfault due to this bug. With previous
  versions of python unaffected by this bug there is no segfaulting.

  Now for details:
  $ lsb_release -rd
  Description:	Ubuntu 14.04.1 LTS
  Release:	14.04
  $ apt-cache policy python3.4
  python3.4:
    Installed: 3.4.0-2ubuntu1
    Candidate: 3.4.0-2ubuntu1
    Version table:
   *** 3.4.0-2ubuntu1 0
          500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
          100 /var/lib/dpkg/status

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