static int handle_grant_data(TABLE_LIST *tables, bool drop,
                             LEX_USER *user_from, LEX_USER *user_to)
{
  int result= 0;
  int found;
  int ret;
  Acl_table_intact table_intact;
  DBUG_ENTER("handle_grant_data");

  /* Handle user table. */
  if (table_intact.check(tables[0].table, &mysql_user_table_def))
  {
    result= -1;
    goto end;
  }

  if ((found= handle_grant_table(tables, 0, drop, user_from, user_to)) < 0)
  {
    /* Handle of table failed, don't touch the in-memory array. */
    result= -1;
  }
  else
  {
    /* Handle user array. */
    if (((ret= handle_grant_struct(USER_ACL, drop, user_from, user_to) > 0) &&
         ! result) || found)
    {
      result= 1; /* At least one record/element found. */
      /* If search is requested, we do not need to search further. */
      if (! drop && ! user_to)
        goto end;
    }
    else if (ret < 0)
    {
      result= -1;
      goto end;
    }
  }

  /* Handle db table. */
  if (table_intact.check(tables[1].table, &mysql_db_table_def))
  {
    result= -1;
    goto end;
  }

  if ((found= handle_grant_table(tables, 1, drop, user_from, user_to)) < 0)
  {
    /* Handle of table failed, don't touch the in-memory array. */
    result= -1;
  }
  else
  {
    /* Handle db array. */
    if ((((ret= handle_grant_struct(DB_ACL, drop, user_from, user_to) > 0) &&
          ! result) || found) && ! result)
    {
      result= 1; /* At least one record/element found. */
      /* If search is requested, we do not need to search further. */
      if (! drop && ! user_to)
        goto end;
    }
    else if (ret < 0)
    {
      result= -1;
      goto end;
    }
  }

  /* Handle stored routines table. */
  if (table_intact.check(tables[4].table, &mysql_procs_priv_table_def))
  {
    result= -1;
    goto end;
  }

  if ((found= handle_grant_table(tables, 4, drop, user_from, user_to)) < 0)
  {
    /* Handle of table failed, don't touch in-memory array. */
    result= -1;
  }
  else
  {
    /* Handle procs array. */
    if ((((ret= handle_grant_struct(PROC_PRIVILEGES_HASH, drop, user_from,
                                    user_to) > 0) && ! result) || found) &&
        ! result)
    {
      result= 1; /* At least one record/element found. */
      /* If search is requested, we do not need to search further. */
      if (! drop && ! user_to)
        goto end;
    }
    else if (ret < 0)
    {
      result= -1;
      goto end;
    }
    /* Handle funcs array. */
    if ((((ret= handle_grant_struct(FUNC_PRIVILEGES_HASH, drop, user_from,
                                    user_to) > 0) && ! result) || found) &&
        ! result)
    {
      result= 1; /* At least one record/element found. */
      /* If search is requested, we do not need to search further. */
      if (! drop && ! user_to)
        goto end;
    }
    else if (ret < 0)
    {
      result= -1;
      goto end;
    }
  }

  /* Handle tables table. */
  if (table_intact.check(tables[2].table, &mysql_tables_priv_table_def))
  {
    result= -1;
    goto end;
  }

  if ((found= handle_grant_table(tables, 2, drop, user_from, user_to)) < 0)
  {
    /* Handle of table failed, don't touch columns and in-memory array. */
    result= -1;
  }
  else
  {
    if (found && ! result)
    {
      result= 1; /* At least one record found. */
      /* If search is requested, we do not need to search further. */
      if (! drop && ! user_to)
        goto end;
    }

    /* Handle columns table. */
    if (table_intact.check(tables[3].table, &mysql_columns_priv_table_def))
    {
      result= -1;
      goto end;
    }

    if ((found= handle_grant_table(tables, 3, drop, user_from, user_to)) < 0)
    {
      /* Handle of table failed, don't touch the in-memory array. */
      result= -1;
    }
    else
    {
      /* Handle columns hash. */
      if ((((ret= handle_grant_struct(COLUMN_PRIVILEGES_HASH, drop, user_from,
                                      user_to) > 0) && ! result) || found) &&
          ! result)
        result= 1; /* At least one record/element found. */
      else if (ret < 0)
        result= -1;
    }
  }

  /* Handle proxies_priv table. */
  if (tables[5].table)
  {
    if (table_intact.check(tables[5].table, &mysql_proxies_priv_table_def))
    {
      result= -1;
      goto end;
    }

    if ((found= handle_grant_table(tables, 5, drop, user_from, user_to)) < 0)
    {
      /* Handle of table failed, don't touch the in-memory array. */
      result= -1;
    }
    else
    {
      /* Handle proxies_priv array. */
      if (((ret= handle_grant_struct(PROXY_USERS_ACL, drop, user_from, user_to) > 0)
           && !result) || found)
        result= 1; /* At least one record/element found. */
      else if (ret < 0)
        result= -1;
    }
  }
 end:
  DBUG_RETURN(result);
}