Here is the patch to fix this issue. (Please forget first patch)

E:\python-dev>py3k -m test.regrtest test_tarfile
[1/1] test_tarfile
1 test OK.
[85902 refs]

E:\python-dev>py3k test_assert_raises.py
--------------------------
[('foo 2',), None, RuntimeError('foo 1',)]
RuntimeError('foo 1',)
[('foo 1',), None]
None
--------------------------
.
----------------------------------------------------------------------
Ran 1 test in 0.050s

OK
===========================
gc: collectable <cell 00C824D0>
gc: collectable <tuple 00C82508>
gc: collectable <function 00C80E18>
gc: collectable <tuple 00C82498>
gc: collectable <function 00C80E78>
gc: collectable <tuple 00C82578>
gc: collectable <function 00C80ED8>
gc: collectable <tuple 00C825B0>
gc: collectable <function 00C80F38>
gc: collectable <tuple 00C825E8>
gc: collectable <function 00C80F98>
gc: collectable <tuple 00C82620>
gc: collectable <function 00C85038>
gc: collectable <tuple 00C82658>
gc: collectable <function 00C85098>
gc: collectable <function 00C850F8>
gc: collectable <type 00B78010>
gc: collectable <dict 00B31578>
gc: collectable <getset_descriptor 00C7CD78>
gc: collectable <getset_descriptor 00C7CDB8>
gc: collectable <tuple 00AC53F8>
===========================
gc: collectable <TextTestResult 00C827A8>
gc: collectable <_WritelnDecorator 00C82690>
gc: collectable <dict 00B316C8>
gc: collectable <dict 00B31818>
gc: collectable <list 00B1D3B8>
gc: collectable <list 00C7CC78>
gc: collectable <list 00B2B878>
gc: collectable <list 00C7CCF8>
gc: collectable <list 00B1D2B8>
gc: collectable <TestCase 00C82770>
gc: collectable <dict 00B314D0>
gc: collectable <dict 00B31770>
gc: collectable <list 00B1CF38>
gc: collectable <method 00AC4438>
gc: collectable <method 00AC45F8>
gc: collectable <method 00AC4638>
gc: collectable <method 00AC42F8>
gc: collectable <method 00AC45B8>
gc: collectable <method 00AC4538>
gc: 40 uncollectable objects at shutdown:
[45216 refs]