1 files changed, 11 insertions, 0 deletions
diff --git a/Lib/test/test_faulthandler.py b/Lib/test/test_faulthandler.py
index 1cf20db..b1aa8c3 100644
--- a/Lib/test/test_faulthandler.py
+++ b/Lib/test/test_faulthandler.py
@@ -817,6 +817,17 @@ class FaultHandlerTests(unittest.TestCase):
         self.assertEqual(output, [])
         self.assertEqual(exitcode, 0xC0000005)
 
+    def test_cancel_later_without_dump_traceback_later(self):
+        # bpo-37933: Calling cancel_dump_traceback_later()
+        # without dump_traceback_later() must not segfault.
+        code = dedent("""
+            import faulthandler
+            faulthandler.cancel_dump_traceback_later()
+        """)
+        output, exitcode = self.get_output(code)
+        self.assertEqual(output, [])
+        self.assertEqual(exitcode, 0)
+
 
 if __name__ == "__main__":
     unittest.main()