From a8bc03696c7c2c03e1d580633151ec7b850366f3 Mon Sep 17 00:00:00 2001
From: Peter Bierma <zintensitydev@gmail.com>
Date: Tue, 3 Sep 2024 16:35:57 -0400
Subject: gh-123504: Fix reference leak in finalization of `_tkinter` (#123505)

---
 .../2024-08-30-09-01-35.gh-issue-123504.lJ9_BB.rst |  1 +
 Modules/_tkinter.c                                 | 27 +++++++++++++++-------
 2 files changed, 20 insertions(+), 8 deletions(-)
 create mode 100644 Misc/NEWS.d/next/Library/2024-08-30-09-01-35.gh-issue-123504.lJ9_BB.rst

diff --git a/Misc/NEWS.d/next/Library/2024-08-30-09-01-35.gh-issue-123504.lJ9_BB.rst b/Misc/NEWS.d/next/Library/2024-08-30-09-01-35.gh-issue-123504.lJ9_BB.rst
new file mode 100644
index 0000000..ea504d3
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-08-30-09-01-35.gh-issue-123504.lJ9_BB.rst
@@ -0,0 +1 @@
+Fixed reference leak in the finalization of :mod:`tkinter`.
diff --git a/Modules/_tkinter.c b/Modules/_tkinter.c
index 1542d3a..e1e8108 100644
--- a/Modules/_tkinter.c
+++ b/Modules/_tkinter.c
@@ -3389,17 +3389,28 @@ DisableEventHook(void)
 #endif
 }
 
+static int
+module_clear(PyObject *mod)
+{
+    Py_CLEAR(Tkinter_TclError);
+    Py_CLEAR(Tkapp_Type);
+    Py_CLEAR(Tktt_Type);
+    Py_CLEAR(PyTclObject_Type);
+    return 0;
+}
+
+static void
+module_free(void *mod)
+{
+    module_clear((PyObject *)mod);
+}
 
 static struct PyModuleDef _tkintermodule = {
     PyModuleDef_HEAD_INIT,
-    "_tkinter",
-    NULL,
-    -1,
-    moduleMethods,
-    NULL,
-    NULL,
-    NULL,
-    NULL
+    .m_name = "_tkinter",
+    .m_methods = moduleMethods,
+    .m_clear = module_clear,
+    .m_free = module_free
 };
 
 PyMODINIT_FUNC
-- 
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