pythongh-116296: Fix refleak in reduce_newobj() corner case (pythonGH…

…-116297) (cherry picked from commit 17c4849) Co-authored-by: Erlend E. Aasland <erlend@python.org> Co-authored-by: Brandt Bucher <brandtbucher@microsoft.com>
miss-islington · Mar 4, 2024 · 5215568 · 5215568
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diff --git a/Misc/NEWS.d/next/Core and Builtins/2024-03-04-10-19-51.gh-issue-116296.gvtxyU.rst b/Misc/NEWS.d/next/Core and Builtins/2024-03-04-10-19-51.gh-issue-116296.gvtxyU.rst
@@ -0,0 +1 @@
+Fix possible refleak in :meth:`!object.__reduce__` internal error handling.
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
@@ -6258,6 +6258,7 @@ reduce_newobj(PyObject *obj)
     }
     else {
         /* args == NULL */
+        Py_DECREF(copyreg);
         Py_DECREF(kwargs);
         PyErr_BadInternalCall();
         return NULL;