spider_string: use c_ptr_safe() instead of ptr() in error messages

Most other uses of ptr() are accompanied with a length, so we leave them alone.

Author: mariadb-YuchenPei

storage/spider/spd_db_mysql.cc

@@ -13310,8 +13310,8 @@ int spider_mbase_handler::show_table_status(
  my_printf_error(
  ER_SPIDER_REMOTE_TABLE_NOT_FOUND_NUM,
  ER_SPIDER_REMOTE_TABLE_NOT_FOUND_STR, MYF(0),
- mysql_share->db_names_str[spider->conn_link_idx[link_idx]].ptr(),
- mysql_share->table_names_str[spider->conn_link_idx[link_idx]].ptr());
+ mysql_share->db_names_str[spider->conn_link_idx[link_idx]].c_ptr_safe(),
+ mysql_share->table_names_str[spider->conn_link_idx[link_idx]].c_ptr_safe());
  DBUG_RETURN(ER_SPIDER_REMOTE_TABLE_NOT_FOUND_NUM);
  }
  } else /* get from information schema */
@@ -13337,15 +13337,15 @@ int spider_mbase_handler::show_table_status(
  my_printf_error(
  ER_SPIDER_REMOTE_TABLE_NOT_FOUND_NUM,
  ER_SPIDER_REMOTE_TABLE_NOT_FOUND_STR, MYF(0),
- mysql_share->db_names_str[spider->conn_link_idx[link_idx]].ptr(),
- mysql_share->table_names_str[spider->conn_link_idx[link_idx]].ptr());
+ mysql_share->db_names_str[spider->conn_link_idx[link_idx]].c_ptr_safe(),
+ mysql_share->table_names_str[spider->conn_link_idx[link_idx]].c_ptr_safe());
  break;
  case ER_SPIDER_INVALID_REMOTE_TABLE_INFO_NUM:
  my_printf_error(
  ER_SPIDER_INVALID_REMOTE_TABLE_INFO_NUM,
  ER_SPIDER_INVALID_REMOTE_TABLE_INFO_STR, MYF(0),
- mysql_share->db_names_str[spider->conn_link_idx[link_idx]].ptr(),
- mysql_share->table_names_str[spider->conn_link_idx[link_idx]].ptr());
+ mysql_share->db_names_str[spider->conn_link_idx[link_idx]].c_ptr_safe(),
+ mysql_share->table_names_str[spider->conn_link_idx[link_idx]].c_ptr_safe());
  break;
  default:
  break;
@@ -13361,8 +13361,8 @@ int spider_mbase_handler::show_table_status(
  my_printf_error(
  ER_SPIDER_TABLE_OPEN_LOCK_WAIT_TIMEOUT_NUM,
  ER_SPIDER_TABLE_OPEN_LOCK_WAIT_TIMEOUT_STR, MYF(0),
- mysql_share->db_names_str[spider->conn_link_idx[link_idx]].ptr(),
- mysql_share->table_names_str[spider->conn_link_idx[link_idx]].ptr());
+ mysql_share->db_names_str[spider->conn_link_idx[link_idx]].c_ptr_safe(),
+ mysql_share->table_names_str[spider->conn_link_idx[link_idx]].c_ptr_safe());
  }
  DBUG_RETURN(error_num);
  }
@@ -13480,15 +13480,15 @@ int spider_mbase_handler::show_index(
  my_printf_error(
  ER_SPIDER_REMOTE_TABLE_NOT_FOUND_NUM,
  ER_SPIDER_REMOTE_TABLE_NOT_FOUND_STR, MYF(0),
- mysql_share->db_names_str[spider->conn_link_idx[link_idx]].ptr(),
- mysql_share->table_names_str[spider->conn_link_idx[link_idx]].ptr());
+ mysql_share->db_names_str[spider->conn_link_idx[link_idx]].c_ptr_safe(),
+ mysql_share->table_names_str[spider->conn_link_idx[link_idx]].c_ptr_safe());
  break;
  case ER_SPIDER_INVALID_REMOTE_TABLE_INFO_NUM:
  my_printf_error(
  ER_SPIDER_INVALID_REMOTE_TABLE_INFO_NUM,
  ER_SPIDER_INVALID_REMOTE_TABLE_INFO_STR, MYF(0),
- mysql_share->db_names_str[spider->conn_link_idx[link_idx]].ptr(),
- mysql_share->table_names_str[spider->conn_link_idx[link_idx]].ptr());
+ mysql_share->db_names_str[spider->conn_link_idx[link_idx]].c_ptr_safe(),
+ mysql_share->table_names_str[spider->conn_link_idx[link_idx]].c_ptr_safe());
  break;
  default:
  break;