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bpo-29347: Fix possibly dereferencing undefined pointers when creating weakref objects #186

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Merged
merged 1 commit into from
Feb 20, 2017
Merged

bpo-29347: Fix possibly dereferencing undefined pointers when creating weakref objects #186

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3 changes: 3 additions & 0 deletions Misc/NEWS
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,9 @@ What's New in Python 3.6.1 release candidate 1?
Core and Builtins
-----------------

- bpo-29347: Fixed possibly dereferencing undefined pointers
when creating weakref objects.

- bpo-29438: Fixed use-after-free problem in key sharing dict.

- Issue #29319: Prevent RunMainFromImporter overwriting sys.path[0].
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2 changes: 2 additions & 0 deletions Objects/weakrefobject.c
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Expand Up @@ -24,6 +24,8 @@ init_weakref(PyWeakReference *self, PyObject *ob, PyObject *callback)
{
self->hash = -1;
self->wr_object = ob;
self->wr_prev = NULL;
self->wr_next = NULL;
Py_XINCREF(callback);
self->wr_callback = callback;
}
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