check return for error

2012-06-01 11:18:22 -07:00 · 2012-06-01 11:18:22 -07:00 · d1ab6089ff
parent 77452fc121
commit d1ab6089ff
1 changed files with 2 additions and 0 deletions
--- a/Python/ceval.c
+++ b/Python/ceval.c
@ -3107,6 +3107,8 @@ format_missing(const char *kind, PyCodeObject *co, PyObject *names)
        tail = PyUnicode_FromFormat(", %U, and %U",
                                    PyList_GET_ITEM(names, len - 2),
                                    PyList_GET_ITEM(names, len - 1));
+        if (tail == NULL)
+            return;
        /* Chop off the last two objects in the list. This shouldn't actually
           fail, but we can't be too careful. */
        err = PyList_SetSlice(names, len - 2, len, NULL);