issue118433-repro.patch

diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
index 362a3f9c4a..39afc9efb0 100644
--- a/Lib/test/test_threading.py
+++ b/Lib/test/test_threading.py
@@ -2029,6 +2029,7 @@ def test_interrupt_main_subthread(self):
         # Calling start_new_thread with a function that executes interrupt_main
         # should raise KeyboardInterrupt upon completion.
         def call_interrupt():
+            time.sleep(0.02)  # give main a chance to reach t.join()
             _thread.interrupt_main()
         t = threading.Thread(target=call_interrupt)
         with self.assertRaises(KeyboardInterrupt):
diff --git a/Lib/threading.py b/Lib/threading.py
index 31ab77c92b..89085d9ca9 100644
--- a/Lib/threading.py
+++ b/Lib/threading.py
@@ -5,7 +5,7 @@
 import _thread
 import warnings
 
-from time import monotonic as _time
+from time import monotonic as _time, sleep as _sleep
 from _weakrefset import WeakSet
 from itertools import count as _count
 try:
@@ -365,6 +365,7 @@ def wait(self, timeout=None):
                     gotit = waiter.acquire(False)
             return gotit
         finally:
+            _sleep(0.1)
             self._acquire_restore(saved_state)
             if not gotit:
                 try: