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bpo-31095: fix potential crash during GC (GH-2974)

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INADA Naoki 2017-08-24 14:55:17 +09:00 • committed by GitHub
parent bf9075a0c5
commit a6296d34a4
14 changed files with 60 additions and 13 deletions
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4
Modules/_collectionsmodule.c
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@ -1717,6 +1717,8 @@ dequeiter_traverse(dequeiterobject *dio, visitproc visit, void *arg)
static void
dequeiter_dealloc(dequeiterobject *dio)
{
/* bpo-31095: UnTrack is needed before calling any callbacks */
PyObject_GC_UnTrack(dio);
Py_XDECREF(dio->deque);
PyObject_GC_Del(dio);
}
@ -2097,6 +2099,8 @@ static PyMemberDef defdict_members[] = {
static void
defdict_dealloc(defdictobject *dd)
{
/* bpo-31095: UnTrack is needed before calling any callbacks */
PyObject_GC_UnTrack(dd);
Py_CLEAR(dd->default_factory);
PyDict_Type.tp_dealloc((PyObject *)dd);
}