--- py3k/Objects/setobject.c	2010-04-19 01:27:35.000000000 +0400
+++ py3k/Objects/setobject.c	2010-04-19 03:03:26.000000000 +0400
@@ -605,15 +605,17 @@
 		goto done;
 	newsize = PyUnicode_GET_SIZE(listrepr);
 	result = PyUnicode_FromUnicode(NULL, newsize);
-	if (result) {
-		u = PyUnicode_AS_UNICODE(result);
-		*u++ = '{';
-		/* Omit the brackets from the listrepr */
-		Py_UNICODE_COPY(u, PyUnicode_AS_UNICODE(listrepr)+1,
-				   PyUnicode_GET_SIZE(listrepr)-2);
-		u += newsize-2;
-		*u++ = '}';
+	if (result == NULL) {
+		Py_DECREF(listrepr);
+		goto done;
 	}
+	u = PyUnicode_AS_UNICODE(result);
+	*u++ = '{';
+	/* Omit the brackets from the listrepr */
+	Py_UNICODE_COPY(u, PyUnicode_AS_UNICODE(listrepr)+1,
+			   PyUnicode_GET_SIZE(listrepr)-2);
+	u += newsize-2;
+	*u++ = '}';
 	Py_DECREF(listrepr);
 	if (Py_TYPE(so) != &PySet_Type) {
 		PyObject *tmp = PyUnicode_FromFormat("%s(%U)",