const char* DownloadItemImpl::DebugDownloadStateString(
    DownloadInternalState state) {
  switch (state) {
    case INITIAL_INTERNAL:
      return "INITIAL";
    case TARGET_PENDING_INTERNAL:
      return "TARGET_PENDING";
    case INTERRUPTED_TARGET_PENDING_INTERNAL:
      return "INTERRUPTED_TARGET_PENDING";
    case TARGET_RESOLVED_INTERNAL:
      return "TARGET_RESOLVED";
    case IN_PROGRESS_INTERNAL:
      return "IN_PROGRESS";
    case COMPLETING_INTERNAL:
      return "COMPLETING";
    case COMPLETE_INTERNAL:
      return "COMPLETE";
    case CANCELLED_INTERNAL:
      return "CANCELLED";
    case INTERRUPTED_INTERNAL:
      return "INTERRUPTED";
    case RESUMING_INTERNAL:
      return "RESUMING";
    case MAX_DOWNLOAD_INTERNAL_STATE:
      break;
  }
  NOTREACHED() << "Unknown download state " << state;
  return "unknown";
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.