Warning message info is not showing in the result set when SQL_MODE is set to ORACLE in a procedure

SET SQL_MODE=ORACLE;

CREATE OR REPLACE TABLE t1( c VARCHAR(2));

DELIMITER $$

CREATE OR REPLACE PROCEDURE p1 AS

  TYPE RecT IS RECORD (

    c_name  t1.c%TYPE

  );

  rec RecT:= RecT('aaa');

BEGIN

  INSERT INTO t1 SELECT rec.c_name;

END;

$$

DELIMITER ;

CALL p1;

INSERT INTO t1 SELECT 'xyz';

SHOW WARNINGS;

SELECT * FROM t1;

11.7.0-dbg>SET SQL_MODE=ORACLE;

Query OK, 0 rows affected (0.001 sec)

11.7.0-dbg>CREATE OR REPLACE TABLE t1( c VARCHAR(2));

Query OK, 0 rows affected (0.070 sec)

11.7.0-dbg>

11.7.0-dbg>DELIMITER $$

11.7.0-dbg>

11.7.0-dbg>CREATE OR REPLACE PROCEDURE p1 AS

    ->   TYPE RecT IS RECORD (

    ->     c_name  t1.c%TYPE

    ->   );

    ->   rec RecT:= RecT('aaa');

    -> 

    -> 

    -> BEGIN

    ->   INSERT INTO t1 SELECT rec.c_name;

    -> END;

    -> $$

Query OK, 0 rows affected (0.037 sec)

11.7.0-dbg>DELIMITER ;

11.7.0-dbg>CALL p1;

Query OK, 1 row affected (0.004 sec)

11.7.0-dbg>INSERT INTO t1 SELECT 'xyz';

Query OK, 1 row affected, 1 warning (0.003 sec)

Records: 1  Duplicates: 0  Warnings: 1

11.7.0-dbg>SHOW WARNINGS;

+---------+------+----------------------------------------+

| Level   | Code | Message                                |

+---------+------+----------------------------------------+

| Warning | 1265 | Data truncated for column 'c' at row 1 |

+---------+------+----------------------------------------+

1 row in set (0.000 sec)

11.7.0-dbg>SELECT * FROM t1;

+------+

| c    |

+------+

| aa   |

| xy   |

+------+

2 rows in set (0.000 sec)

11.7.0-dbg>