1 files changed, 58 insertions, 0 deletions
diff --git a/abs/core/python2/descr_ref.patch b/abs/core/python2/descr_ref.patch
new file mode 100644
index 0000000..b55cf58
--- /dev/null
+++ b/abs/core/python2/descr_ref.patch
@@ -0,0 +1,58 @@
+When calling tp_descr_get(self, obj, type), make sure that we own a reference to "self"
+
+diff -ru Python-2.7.9/Objects/typeobject.c Python-2.7.9-fixed//Objects/typeobject.c
+--- Python-2.7.9/Objects/typeobject.c	2014-12-10 16:59:57.000000000 +0100
++++ Python-2.7.9-fixed//Objects/typeobject.c	2015-11-27 20:39:58.276156800 +0100
+@@ -2542,6 +2542,7 @@
+     PyTypeObject *metatype = Py_TYPE(type);
+     PyObject *meta_attribute, *attribute;
+     descrgetfunc meta_get;
++    PyObject* res;
+ 
+     if (!PyString_Check(name)) {
+         PyErr_Format(PyExc_TypeError,
+@@ -2563,6 +2564,7 @@
+     meta_attribute = _PyType_Lookup(metatype, name);
+ 
+     if (meta_attribute != NULL) {
++        Py_INCREF(meta_attribute);
+         meta_get = Py_TYPE(meta_attribute)->tp_descr_get;
+ 
+         if (meta_get != NULL && PyDescr_IsData(meta_attribute)) {
+@@ -2570,10 +2572,11 @@
+              * writes. Assume the attribute is not overridden in
+              * type's tp_dict (and bases): call the descriptor now.
+              */
+-            return meta_get(meta_attribute, (PyObject *)type,
++            res = meta_get(meta_attribute, (PyObject *)type,
+                             (PyObject *)metatype);
++            Py_DECREF(meta_attribute);
++            return res;
+         }
+-        Py_INCREF(meta_attribute);
+     }
+ 
+     /* No data descriptor found on metatype. Look in tp_dict of this
+@@ -2581,6 +2584,7 @@
+     attribute = _PyType_Lookup(type, name);
+     if (attribute != NULL) {
+         /* Implement descriptor functionality, if any */
++        Py_INCREF(attribute);
+         descrgetfunc local_get = Py_TYPE(attribute)->tp_descr_get;
+ 
+         Py_XDECREF(meta_attribute);
+@@ -2588,11 +2592,12 @@
+         if (local_get != NULL) {
+             /* NULL 2nd argument indicates the descriptor was
+              * found on the target object itself (or a base)  */
+-            return local_get(attribute, (PyObject *)NULL,
++            res = local_get(attribute, (PyObject *)NULL,
+                              (PyObject *)type);
++            Py_DECREF(attribute);
++            return res;
+         }
+ 
+-        Py_INCREF(attribute);
+         return attribute;
+     }
+