From 277e258bff2a8848a36d397667074a685fdfae73 Mon Sep 17 00:00:00 2001
From: Noah <57315647+zolaski333@users.noreply.github.com>
Date: Wed, 14 Oct 2026 04:38:50 +0200
Subject: [PATCH] gh-159293: Restore the recursion limit after the
 free-threading race test (GH-159311)

Adds a cleanup to ensure interpreter state is restored after testing recursion
limit changes.
(cherry picked from commit aeff4cb4c4b38744037f7ea88d2241c66c17a7eb)

Co-authored-by: Noah <57315647+zolaski333@users.noreply.github.com>
---
 Lib/test/test_free_threading/test_races.py                      | 2 ++
 .../next/Tests/2026-10-13-13-34-00.gh-issue-159293.Lr8q2N.rst   | 2 ++
 2 files changed, 4 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Tests/2026-10-13-13-34-00.gh-issue-159293.Lr8q2N.rst

diff --git a/Lib/test/test_free_threading/test_races.py b/Lib/test/test_free_threading/test_races.py
index 23b48c76195408..f08de7496eb526 100644
--- a/Lib/test/test_free_threading/test_races.py
+++ b/Lib/test/test_free_threading/test_races.py
@@ -272,6 +272,8 @@ def mutate():
         do_race(set_value, mutate)
 
     def test_racing_recursion_limit(self):
+        self.addCleanup(sys.setrecursionlimit, sys.getrecursionlimit())
+
         def something_recursive():
             def count(n):
                 if n > 0:
diff --git a/Misc/NEWS.d/next/Tests/2026-10-13-13-34-00.gh-issue-159293.Lr8q2N.rst b/Misc/NEWS.d/next/Tests/2026-10-13-13-34-00.gh-issue-159293.Lr8q2N.rst
new file mode 100644
index 00000000000000..2a122343a3fe2a
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2026-10-13-13-34-00.gh-issue-159293.Lr8q2N.rst
@@ -0,0 +1,2 @@
+Restore the recursion limit after the free-threading recursion-limit race test
+to avoid failures in subsequent tests run in the same process.