gh-117657: Skip tests that fork with threads under TSan (#121599)

colesbury · web-flow · commit 82a4dac9f613 · 2024-07-15T16:43:51.000-04:00
This avoids messages like:

  ThreadSanitizer: starting new threads after multi-threaded fork is not
  supported. Dying (set die_after_fork=0 to override)
diff --git a/Lib/test/test_logging.py b/Lib/test/test_logging.py
@@ -3972,6 +3972,7 @@ def test_config_queue_handler_invalid_config_does_not_create_multiprocessing_man
             )
         manager.assert_not_called()
 
+    @skip_if_tsan_fork
     @support.requires_subprocess()
     def test_multiprocessing_queues(self):
         # See gh-119819
@@ -4284,6 +4285,7 @@ def test_queue_listener_with_multiple_handlers(self):
     import multiprocessing
     from unittest.mock import patch
 
+    @skip_if_tsan_fork
     @threading_helper.requires_working_threading()
     class QueueListenerTest(BaseTest):
         """
@@ -5184,6 +5186,7 @@ def _extract_logrecord_process_name(key, logMultiprocessing, conn=None):
         else:
             return results
 
+    @skip_if_tsan_fork
     def test_multiprocessing(self):
         support.skip_if_broken_multiprocessing_synchronize()
         multiprocessing_imported = 'multiprocessing' in sys.modules
