diff --git a/parser.c b/parser.c
index c768555..4f5b7be 100644
--- a/parser.c
+++ b/parser.c
@@ -2108,6 +2108,10 @@ nextvar:
 
         if (parser->tok == ',') {
             /* another var */
+            if (!parser_next(parser)) {
+                ast_delete(typevar);
+                return false;
+            }
             continue;
         }