The builtins/typing module are not causing recursions. They are using annotations to give results.

test/completion/stdlib.py

@@ -103,7 +103,7 @@ for a in re.finditer('a', 'a'):
     #? int()
     a.start()
 
-#? str() bytes()
+#?
 re.sub('a', 'a')
 #? str() bytes()
 re.sub('a', 'a', 'f')