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authorTim Peters <tim.peters@gmail.com>2001-06-20 06:57:32 (GMT)
committerTim Peters <tim.peters@gmail.com>2001-06-20 06:57:32 (GMT)
commit6302ec63fc40dd6ae1ad3003003b6b264422e8e0 (patch)
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gen_iternext(): repair subtle refcount problem.
NeilS, please check! This came from staring at your genbug.py, but I'm not sure it plugs all possible holes. Without this, I caught a frameobject refcount going negative, and it was also the cause (in debug build) of _Py_ForgetReference's attempt to forget an object with already- NULL _ob_prev and _ob_next pointers -- although I'm still not entirely sure how! Part of the difficulty is that frameobjects are stored on a free list that gets recycled very quickly, so if there's a stray pointer to one of them it never looks like an insane frameobject (never goes trough the free() mangling MS debug forces, etc).
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