CHECK TABLE fails to check info_bits of records

--source include/have_innodb.inc

--source include/have_debug.inc

--echo #

--echo # MDEV-19916 Corruption after instant ADD/DROP and shrinking the tree

--echo #

CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;

# Create an index tree with 2 levels of node pointer pages.

SET @old_limit = @@innodb_limit_optimistic_insert_debug;

SET GLOBAL innodb_limit_optimistic_insert_debug = 2;

INSERT INTO t1 VALUES (1),(5),(4),(3),(2);

SET GLOBAL innodb_limit_optimistic_insert_debug = @old_limit;

ALTER TABLE t1 ADD COLUMN b INT, ALGORITHM=INSTANT;

SET GLOBAL innodb_defragment = 1;

OPTIMIZE TABLE t1;

--source include/restart_mysqld.inc

# restart with a newer MariaDB 10.3

CHECK TABLE t1;