--- old/src/java.xml/share/classes/com/sun/java_cup/internal/runtime/lr_parser.java	2017-11-06 22:18:05.140008423 -0800
+++ new/src/java.xml/share/classes/com/sun/java_cup/internal/runtime/lr_parser.java	2017-11-06 22:18:04.655961213 -0800
@@ -946,7 +946,7 @@
           if (debug)
             debug_message("# Pop stack by one, state was # " +
                           (stack.peek()).parse_state);
-          left_pos = ((Symbol)stack.pop()).left;
+          left_pos = stack.pop().left;
           tos--;
 
           /* if we have hit bottom, we fail */