code: def test_issue12483(self):
      import gc
  
      class Nasty:
          def __del__(self):
              gc.collect()
  
      CFUNCTYPE(None)(lambda x=Nasty(): None)
  
imports: import functools
  import unittest
  from ctypes import *
  from ctypes.test import need_symbol
  import _ctypes_test
label_desc: Use image node_id 22 for calling the Callbacks obj's underlying member method code with example usage: obj.test_issue12483() without return types