src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/ScriptObject.java

*** 1999,2014 ****
          final FindProperty find = findProperty(name, true);
          MethodHandle mh;
  
          if (find == null) {
              switch (operator) {
              case "getProp":
                  return noSuchProperty(desc, request);
              case "getMethod":
                  return noSuchMethod(desc, request);
-             case "getElem":
-                 return createEmptyGetter(desc, explicitInstanceOfCheck, name);
              default:
                  throw new AssertionError(operator); // never invoked with any other operation
              }
          }
  
--- 1999,2013 ----
          final FindProperty find = findProperty(name, true);
          MethodHandle mh;
  
          if (find == null) {
              switch (operator) {
+             case "getElem": // getElem only gets here if element name is constant, so treat it like a property access
              case "getProp":
                  return noSuchProperty(desc, request);
              case "getMethod":
                  return noSuchMethod(desc, request);
              default:
                  throw new AssertionError(operator); // never invoked with any other operation
              }
          }