New issue 1773: py3k: continuation.test_zpickle 
test_pickle_continulet_real_subclass triggers a CPython crash
https://bitbucket.org/pypy/pypy/issue/1773/py3k-continuationtest_zpickle

Philip Jenvey:

test_pickle_continulet_real_subclass has been disabled on the py3k branch for 
now as it  can trigger a seg fault when running under CPython.

It'll crash with a "Fatal Python error: GC object already tracked", or at least 
on OSX: "malloc: *** error for object 0x109620af0: pointer being realloc'd was 
not allocated"

continulets do some potentially 'evil' low level things but AFAICT nothing 
pypy's doing is at at fault here. The crash doesn't seem to occur on default 
even though the continulet implementations/tests are basically identical


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