Backport python/cpython#96479 (#73)

Issue: python/cpython#96478 PR: python/cpython#96479
python · Sep 6, 2022 · 2979419 · 2979419
1 parent 3a61a94
commit 2979419
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/src/test_typing_extensions.py b/src/test_typing_extensions.py
@@ -493,6 +493,23 @@ def blah():
 
         blah()
 
+    @patch(
+        f"{registry_holder.__name__}._overload_registry",
+        defaultdict(lambda: defaultdict(dict))
+    )
+    def test_overload_on_compiled_functions(self):
+        registry = registry_holder._overload_registry
+        # The registry starts out empty:
+        self.assertEqual(registry, {})
+
+        # This should just not fail:
+        overload(sum)
+        overload(print)
+
+        # No overloads are recorded:
+        self.assertEqual(get_overloads(sum), [])
+        self.assertEqual(get_overloads(print), [])
+
     def set_up_overloads(self):
         def blah():
             pass