pbx: Handle a completely empty dialplan during a context merge
[asterisk/asterisk.git] / main / pbx.c
index 65865ff..734b9ee 100644 (file)
@@ -8804,6 +8804,16 @@ void ast_merge_contexts_and_delete(struct ast_context **extcontexts, struct ast_
        begintime = ast_tvnow();
        ast_mutex_lock(&context_merge_lock);/* Serialize ast_merge_contexts_and_delete */
        ast_wrlock_contexts();
+
+       if (!contexts_table) {
+               /* Well, that's odd. There are no contexts. */
+               contexts_table = exttable;
+               contexts = *extcontexts;
+               ast_unlock_contexts();
+               ast_mutex_unlock(&context_merge_lock);
+               return;
+       }
+
        iter = ast_hashtab_start_traversal(contexts_table);
        while ((tmp = ast_hashtab_next(iter))) {
                context_merge(extcontexts, exttable, tmp, registrar);