--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cgen/templates/default/load_build_class	Thu Apr 26 11:08:47 2012 -0700
@@ -0,0 +1,29 @@
+
+        TARGET(LOAD_BUILD_CLASS)
+        {
+            _Py_IDENTIFIER(__build_class__);
+
+            if (PyDict_CheckExact(f->f_builtins)) {
+                x = _PyDict_GetItemId(f->f_builtins, &PyId___build_class__);
+                if (x == NULL) {
+                    PyErr_SetString(PyExc_NameError,
+                                    "__build_class__ not found");
+			        goto on_error;;
+                }
+                Py_INCREF(x);
+            }
+            else {
+                PyObject *build_class_str = _PyUnicode_FromId(&PyId___build_class__);
+                if (build_class_str == NULL)
+			        goto on_error;;
+                x = PyObject_GetItem(f->f_builtins, build_class_str);
+                if (x == NULL) {
+                    if (PyErr_ExceptionMatches(PyExc_KeyError))
+                        PyErr_SetString(PyExc_NameError,
+                                        "__build_class__ not found");
+			        goto on_error;;
+                }
+            }
+            PUSH(x);
+			goto on_error;;
+        }