src/jdk/nashorn/internal/runtime/DebuggerSupport.java

*** 237,247 ****
      private static String objectAsString(final ScriptObject object, final boolean all, final Set<Object> duplicates) {
          final StringBuilder sb = new StringBuilder();
  
          if (ScriptObject.isArray(object)) {
              sb.append('[');
!             final long length = object.getLong("length", INVALID_PROGRAM_POINT);
  
              for (long i = 0; i < length; i++) {
                  if (object.has(i)) {
                      final Object valueAsObject = object.get(i);
                      final boolean isUndefined = valueAsObject == ScriptRuntime.UNDEFINED;
--- 237,247 ----
      private static String objectAsString(final ScriptObject object, final boolean all, final Set<Object> duplicates) {
          final StringBuilder sb = new StringBuilder();
  
          if (ScriptObject.isArray(object)) {
              sb.append('[');
!             final long length = (long) object.getDouble("length", INVALID_PROGRAM_POINT);
  
              for (long i = 0; i < length; i++) {
                  if (object.has(i)) {
                      final Object valueAsObject = object.get(i);
                      final boolean isUndefined = valueAsObject == ScriptRuntime.UNDEFINED;