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Add a safeguard against setting the class to something with a

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different free or alloc slot.
This commit is contained in:
Guido van Rossum 2002-05-24 18:47:47 +00:00
parent 4b46c0a15f
commit 9ee4b94f51
1 changed files with 10 additions and 0 deletions
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10
Objects/typeobject.c
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@ -1622,6 +1622,16 @@ object_set_class(PyObject *self, PyObject *value, void *closure)
return -1; return -1;
} }
new = (PyTypeObject *)value; new = (PyTypeObject *)value;
if (new->tp_dealloc != old->tp_dealloc ||
new->tp_free != old->tp_free)
{
PyErr_Format(PyExc_TypeError,
"__class__ assignment: "
"'%s' deallocator differs from '%s'",
new->tp_name,
old->tp_name);
return -1;
}
newbase = new; newbase = new;
oldbase = old; oldbase = old;
while (equiv_structs(newbase, newbase->tp_base)) while (equiv_structs(newbase, newbase->tp_base))