# # MDEV-23248 Server crashes in mi_extra / # ha_partition::loop_extra_alter upon REORGANIZE # CREATE TABLE t1 (a INT, b INT) ENGINE=MyISAM PARTITION BY RANGE (a) SUBPARTITION BY HASH (a) SUBPARTITIONS 70 (PARTITION p1 VALUES LESS THAN (100), PARTITION p2 VALUES LESS THAN MAXVALUE); INSERT INTO t1 SELECT 4, 6 FROM seq_1_to_131072; UPDATE t1 SET a = 7; set @org_debug=@@debug_dbug; set @@debug_dbug="+d,debug_abort_copy_partitions"; ALTER TABLE t1 REORGANIZE PARTITION p1,p2 INTO (PARTITION p1 VALUES LESS THAN (5), PARTITION p2 VALUES LESS THAN MAXVALUE); ERROR 42000: Table 't1' uses an extension that doesn't exist in this MariaDB version set @@debug_dbug=@org_debug; DROP TABLE t1;