Loop outside doens't work, MySQL

Language: Layout:

#MySQL 5.7.12
#please drop objects you've created at the end of the script
#or check for their existance before creating
#'\\' is a delimiter

DROP PROCEDURE IF EXISTS `sp_test`\\
DROP TABLE IF EXISTS `classes`, `people`\\

CREATE TABLE IF NOT EXISTS `people` (
  `code` SERIAL,
  `name` VARCHAR(25)
)\\

CREATE TABLE IF NOT EXISTS `classes` (
  `code` SERIAL,
  `desc` VARCHAR(25)
)\\

INSERT INTO `people`
  (`name`)
VALUES
  ('Carlos'), ('Charles'),
  ('Mary'), ('Jhon'),
  ('Jen')\\

INSERT INTO `classes`
  (`desc`)
VALUES
  ('Java'), ('PHP'),
  ('Perl'), ('Python'),
  ('Javascript')\\

CREATE PROCEDURE `sp_test`()
BEGIN
  DECLARE `v_cdclass` BIGINT UNSIGNED;
  DECLARE `v_codperson` BIGINT UNSIGNED;
  DECLARE `done2` BOOL;
  DECLARE `R` CURSOR FOR
    SELECT `code` FROM `people`;
  DECLARE CONTINUE HANDLER FOR NOT FOUND SET `done2` := TRUE;
  DROP TEMPORARY TABLE IF EXISTS `temp1`;
  CREATE TEMPORARY TABLE IF NOT EXISTS `temp1` (
    `id`  SERIAL,
    `cdfunc` BIGINT UNSIGNED,
    `class` BIGINT UNSIGNED
  ); 
  OPEN `R`;
    `loop0`: LOOP
      FETCH `R` INTO `v_codperson`;
      IF `done2` THEN
        LEAVE `loop0`;
      END IF;
      `BLOCO2`: BEGIN
        DECLARE `done1` BOOL;
        DECLARE `classes` CURSOR FOR
          SELECT DISTINCT `code` FROM `classes`;
        DECLARE CONTINUE HANDLER FOR NOT FOUND SET `done1` := TRUE;
        OPEN `classes`;
        `loop1`: LOOP
          FETCH `classes` INTO `v_cdclass`;
          IF `done1` THEN
            LEAVE `loop1`;
          END IF;
          INSERT INTO `temp1`
            (`cdfunc`, `class`)
          VALUES 
            (`v_codperson` , `v_cdclass`);
        END LOOP `loop1`;   
        CLOSE `classes`;        
      END `BLOCO2`;
    END LOOP `loop0`;
  CLOSE R; 
  SELECT `cdfunc`, `class`
  FROM `temp1`;
END\\

CALL `sp_test`\\

DROP PROCEDURE IF EXISTS `sp_test`\\
DROP TEMPORARY TABLE IF EXISTS `temp1`\\
DROP TABLE IF EXISTS `classes`, `people`\\


absolute service time: 0,38 sec