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bpo-29347: Fix possibly dereferencing undefined pointers when creating weakref objects by zhangyangyu · Pull Request #187 · python/cpython · GitHub

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bpo-29347: Fix possibly dereferencing undefined pointers when creating weakref objects #187

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Merged
zhangyangyu merged 1 commit into from
Feb 20, 2017
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bpo-29347: Fix possibly dereferencing undefined pointers when creating weakref objects #187

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3 changes: 3 additions & 0 deletions Misc/NEWS
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Expand Up @@ -10,6 +10,9 @@ What's New in Python 2.7.14?
Core and Builtins
-----------------

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

- Issue #14376: Allow sys.exit to accept longs as well as ints. Patch
by Gareth Rees.

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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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