From 844f4c2e12a7c637d1de93dbbb0718be06553510 Mon Sep 17 00:00:00 2001
From: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>
Date: Fri, 1 Sep 2023 10:16:09 +0100
Subject: gh-108727: Fix segfault due to missing tp_dealloc definition for
 CounterOptimizer_Type (GH-108734)

---
 Lib/test/test_capi/test_misc.py                                    | 7 +++++++
 .../2023-08-31-21-29-28.gh-issue-108727.blNRGM.rst                 | 2 ++
 Python/optimizer.c                                                 | 1 +
 3 files changed, 10 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Core and Builtins/2023-08-31-21-29-28.gh-issue-108727.blNRGM.rst

diff --git a/Lib/test/test_capi/test_misc.py b/Lib/test/test_capi/test_misc.py
index 4148f15..004ce39 100644
--- a/Lib/test/test_capi/test_misc.py
+++ b/Lib/test/test_capi/test_misc.py
@@ -2284,6 +2284,13 @@ def clear_executors(func):
 
 class TestOptimizerAPI(unittest.TestCase):
 
+    def test_get_counter_optimizer_dealloc(self):
+        # See gh-108727
+        def f():
+            _testinternalcapi.get_counter_optimizer()
+
+        f()
+
     def test_get_set_optimizer(self):
         old = _testinternalcapi.get_optimizer()
         opt = _testinternalcapi.get_counter_optimizer()
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-08-31-21-29-28.gh-issue-108727.blNRGM.rst b/Misc/NEWS.d/next/Core and Builtins/2023-08-31-21-29-28.gh-issue-108727.blNRGM.rst
new file mode 100644
index 0000000..34959ae
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-08-31-21-29-28.gh-issue-108727.blNRGM.rst	
@@ -0,0 +1,2 @@
+Define ``tp_dealloc`` for ``CounterOptimizer_Type``. This fixes a segfault
+on deallocation.
diff --git a/Python/optimizer.c b/Python/optimizer.c
index c311a03..7472f52 100644
--- a/Python/optimizer.c
+++ b/Python/optimizer.c
@@ -289,6 +289,7 @@ static PyTypeObject CounterOptimizer_Type = {
     .tp_itemsize = 0,
     .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION,
     .tp_methods = counter_methods,
+    .tp_dealloc = (destructor)PyObject_Del,
 };
 
 PyObject *
-- 
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