--source include/innodb_page_size_small.inc

--echo #
--echo # MDEV-21259 Assertion 'w != NORMAL || mach_read_from_4(ptr) != val'
--echo # failed in mtr_t::write(), btr_free_externally_stored_field()
--echo #

CREATE TABLE t1 (c TEXT, f2 INT PRIMARY KEY, f3 INT UNIQUE)
ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4;

SET @level= @@GLOBAL.innodb_compression_level;
SET GLOBAL innodb_compression_level=0;
--connect (prevent_purge,localhost,root)
START TRANSACTION WITH CONSISTENT SNAPSHOT;

--connection default
INSERT INTO t1 VALUES('a',1,0);
UPDATE t1 SET c= REPEAT('a b ',4096);
REPLACE INTO t1 SELECT * FROM t1;

--disconnect prevent_purge
--source ../../innodb/include/wait_all_purged.inc

DROP TABLE t1;
SET GLOBAL innodb_compression_level = @level;