check for empty string && output list

diff --git a/src/lib/server/xlat_tokenize.c b/src/lib/server/xlat_tokenize.c
index 03c344a5f20e9a10464f4c2185e008df9db9bc23..96ebf9ba013fc1f9824bb6f323fc84a69d650bbd 100644 (file)
--- a/src/lib/server/xlat_tokenize.c
+++ b/src/lib/server/xlat_tokenize.c
@@ -938,6 +938,11 @@ ssize_t xlat_tokenize_argv(TALLOC_CTX *ctx, xlat_exp_t **head, char const *in, s
                last = &(node->next);
        }
 
+       if (!my_head) {
+               fr_strerror_printf("Empty string is invalid");
+               return -1;
+       }
+
        *head = my_head;
        my_head->count = count;
        return p - in;