Issue #24791: Add tests for things that regressed with PEP 448
diff --git a/Lib/test/test_grammar.py b/Lib/test/test_grammar.py
index fb5ffc0..2504523 100644
--- a/Lib/test/test_grammar.py
+++ b/Lib/test/test_grammar.py
@@ -204,7 +204,9 @@
         d01()
         d01(1)
         d01(*(1,))
+        d01(*[] or [2])
         d01(**{'a':2})
+        d01(**{'a':2} or {})
         def d11(a, b=1): pass
         d11(1)
         d11(1, 2)