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bpo-36421: Fix a possible double decref in _ctypes.c's PyCArrayType_new(). (GH-12530) 

Set type_attr to NULL after the assignment to stgdict->proto (like
what is done with stgdict after the Py_SETREF() call) so that it is
not decrefed twice on error.
This commit is contained in:
Zackery Spytz 2019-03-25 02:07:47 -06:00 committed by Serhiy Storchaka
parent dd5417afcf
commit 5e333784f0
2 changed files with 2 additions and 0 deletions
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Misc/NEWS.d/next/Core and Builtins/2019-03-24-21-33-22.bpo-36421.gJ2Pv9.rst Normal file
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@ -0,0 +1 @@
Fix a possible double decref in _ctypes.c's ``PyCArrayType_new()``.

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Modules/_ctypes/_ctypes.c
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@ -1522,6 +1522,7 @@ PyCArrayType_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
stgdict->align = itemalign;
stgdict->length = length;
stgdict->proto = type_attr;
type_attr = NULL;
stgdict->paramfunc = &PyCArrayType_paramfunc;