Server returns string inerpretation of BIT(n) field value in a subquery

MariaDB [test]> CREATE TABLE t_odbc350 (v BIT(1));

Query OK, 0 rows affected (0.045 sec)

MariaDB [test]> INSERT INTO t_odbc350 VALUES(0);

Query OK, 1 row affected (0.103 sec)

MariaDB [test]> SELECT v, (SELECT v FROM t_odbc350 LIMIT 1) FROM t_odbc350;

Field   1:  `v`

Org_field:  `v`

Catalog:    `def`

Database:   `test`

Table:      `t_odbc350`

Org_table:  `t_odbc350`

Type:       BIT

Collation:  binary (63)

Length:     1

Max_length: 1

Decimals:   0

Flags:      UNSIGNED

Field   2:  `(SELECT v FROM t_odbc350 LIMIT 1)`

Org_field:  ``

Catalog:    `def`

Database:   ``

Table:      ``

Org_table:  ``

Type:       BIT

Collation:  binary (63)

Length:     1

Max_length: 1

Decimals:   0

Flags:      UNSIGNED BINARY

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

| v    | (SELECT v FROM t_odbc350 LIMIT 1) |

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

|      | 0                                 |

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

1 row in set (0.000 sec)