Python Crash with ORM Inheritance

[peterbraden@…]

This bug causes a reproducible crash in the python interpreter [python issue5014] on my system, so I can't give a specific traceback, but I believe that an infinite recursion is generated when I try and use the db_column in a TextField.

Basically, I'm modifying one of my models to allow inheritance of a field so rather than keep the existing field which cannot be overridden with a function in the subclass, I'm creating a property to access the field - ie:

class Foo(model):
  _bar = TextField(db_column = 'bar')

  bar = property(lambda x: x.bar)

class Bla(Foo):
  @property
  def bar(self): whatever

I think the db_column = 'bar' causes problems as there is a Foo.bar attribute so somewhere in the model this is screwing things up by making an infinite loop which for some reason is breaking the python runtime.

Reproducible with revision 9787

[Alex Gaynor]

edited for readability, please use the preview feature :)