From c6d0b5eeb023e7429105cfa4383d5d6605bf4a08 Mon Sep 17 00:00:00 2001
From: Victor Stinner <vstinner@python.org>
Date: Fri, 25 Feb 2022 12:34:00 +0100
Subject: [PATCH] bpo-1635741: Fix winreg reference leaks (GH-31560)

Clear also the PyHKEY_Type static type at exit.
---
 Objects/object.c | 8 ++++++++
 PC/winreg.c      | 4 ----
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/Objects/object.c b/Objects/object.c
index 3044c862fb9dac..77a457223764a7 100644
--- a/Objects/object.c
+++ b/Objects/object.c
@@ -1825,6 +1825,11 @@ _PyTypes_InitState(PyInterpreterState *interp)
 }
 
 
+
+#ifdef MS_WINDOWS
+extern PyTypeObject PyHKEY_Type;
+#endif
+
 static PyTypeObject* static_types[] = {
     // The two most important base types: must be initialized first and
     // deallocated last.
@@ -1869,6 +1874,9 @@ static PyTypeObject* static_types[] = {
     &PyFunction_Type,
     &PyGen_Type,
     &PyGetSetDescr_Type,
+#ifdef MS_WINDOWS
+    &PyHKEY_Type,
+#endif
     &PyInstanceMethod_Type,
     &PyListIter_Type,
     &PyListRevIter_Type,
diff --git a/PC/winreg.c b/PC/winreg.c
index 004a89a5355f6c..2d44c82000c682 100644
--- a/PC/winreg.c
+++ b/PC/winreg.c
@@ -2046,11 +2046,9 @@ PyMODINIT_FUNC PyInit_winreg(void)
     PyHKEY_Type.tp_doc = PyHKEY_doc;
     if (PyType_Ready(&PyHKEY_Type) < 0)
         return NULL;
-    Py_INCREF(&PyHKEY_Type);
     if (PyDict_SetItemString(d, "HKEYType",
                              (PyObject *)&PyHKEY_Type) != 0)
         return NULL;
-    Py_INCREF(PyExc_OSError);
     if (PyDict_SetItemString(d, "error",
                              PyExc_OSError) != 0)
         return NULL;
@@ -2116,5 +2114,3 @@ PyMODINIT_FUNC PyInit_winreg(void)
     ADD_INT(REG_RESOURCE_REQUIREMENTS_LIST);
     return m;
 }
-
-