Enable GC for new-style instances. This touches lots of files, since

many types were subclassable but had a xxx_dealloc function that
called PyObject_DEL(self) directly instead of deferring to
self->ob_type->tp_free(self).  It is permissible to set tp_free in the
type object directly to _PyObject_Del, for non-GC types, or to
_PyObject_GC_Del, for GC types.  Still, PyObject_DEL was a tad faster,
so I'm fearing that our pystone rating is going down again.  I'm not
sure if doing something like

void xxx_dealloc(PyObject *self)
{
	if (PyXxxCheckExact(self))
		PyObject_DEL(self);
	else
		self->ob_type->tp_free(self);
}

is any faster than always calling the else branch, so I haven't
attempted that -- however those types whose own dealloc is fancier
(int, float, unicode) do use this pattern.

1 files changed, 2 insertions, 1 deletions

diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index f68a964..829f76d 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -705,7 +705,7 @@ dict_dealloc(register dictobject *mp)
 	}
 	if (mp->ma_table != mp->ma_smalltable)
 		PyMem_DEL(mp->ma_table);
-	PyObject_GC_Del(mp);
+	mp->ob_type->tp_free((PyObject *)mp);
 	Py_TRASHCAN_SAFE_END(mp)
 }
 
@@ -1769,6 +1769,7 @@ PyTypeObject PyDict_Type = {
 	(initproc)dict_init,			/* tp_init */
 	PyType_GenericAlloc,			/* tp_alloc */
 	dict_new,				/* tp_new */
+	_PyObject_GC_Del,			/* tp_free */
 };
 
 /* For backward compatibility with old dictionary interface */