new_contents: 
  # http://python.org/sf/1303614
  
  class Y(object):
      pass
  
  class type_with_modifiable_dict(type, Y):
      pass
  
  class MyClass(object):
      """This class has its __dict__ attribute indirectly
      exposed via the __dict__ getter/setter of Y.
      """
      __metaclass__ = type_with_modifiable_dict
  
  
  if __name__ == '__main__':
      dictattr = Y.__dict__['__dict__']
      dictattr.__delete__(MyClass)  # if we set tp_dict to NULL,
      print MyClass         # doing anything with MyClass segfaults
  
subject: Modify the segfaulting example to show why r53997 is not a solution to it.