--source include/have_innodb.inc
--source include/have_debug.inc
--source include/have_debug_sync.inc

--echo #
--echo # MDEV-24971 InnoDB access freed virtual column
--echo #	after rollback of secondary index
--echo #

# Exclusive lock must not defer the index removal

CREATE TABLE t1(f1 INT, f2 INT AS (f1 + 2) VIRTUAL)ENGINE=InnoDB;
INSERT INTO t1(f1) VALUES(1), (1);
--error ER_DUP_ENTRY
ALTER TABLE t1 ADD UNIQUE INDEX(f2), ALGORITHM=INPLACE, LOCK=EXCLUSIVE;
SHOW CREATE TABLE t1;
DROP TABLE t1;

# If Shared lock and table doesn't have any other open handle
# then InnoDB must not defer the index removal

CREATE TABLE t1(f1 INT, f2 INT AS (f1 + 2) VIRTUAL)ENGINE=InnoDB;
INSERT INTO t1(f1) VALUES(1), (1);
--error ER_DUP_ENTRY
ALTER TABLE t1 ADD UNIQUE INDEX(f2), ALGORITHM=INPLACE, LOCK=SHARED;
SHOW CREATE TABLE t1;
DROP TABLE t1;

# InnoDB should store the newly dropped virtual column into
# new_vcol_info in index when rollback of alter happens

CREATE TABLE t1(f1 INT, f2 INT AS (f1) VIRTUAL)ENGINE=InnoDB;
INSERT INTO t1(f1) VALUES(1);
SET DEBUG_DBUG="+d,create_index_fail";
SET DEBUG_SYNC="innodb_inplace_alter_table_enter SIGNAL con1_go WAIT_FOR alter_signal";
SEND ALTER TABLE t1 ADD COLUMN f3 INT AS (f1) VIRTUAL, ADD INDEX(f2, f3);
connect(con1,localhost,root,,,);
SET DEBUG_SYNC="now WAIT_FOR con1_go";
BEGIN;
SELECT * FROM t1;
SET DEBUG_SYNC="now SIGNAL alter_signal";
connection default;
--error ER_DUP_ENTRY
reap;
connection con1;
rollback;
connection default;
SHOW CREATE TABLE t1;
DROP TABLE t1;

CREATE TABLE t1(f1 INT, f2 INT AS (f1) VIRTUAL)ENGINE=InnoDB;
INSERT INTO t1(f1) VALUES(1);
SET DEBUG_DBUG="+d,create_index_fail";
SET DEBUG_SYNC="innodb_inplace_alter_table_enter SIGNAL con1_go WAIT_FOR alter_signal";
send ALTER TABLE t1 ADD INDEX(f2);
connection con1;
SET DEBUG_SYNC="now WAIT_FOR con1_go";
BEGIN;
INSERT INTO t1(f1) VALUES(1);
SET DEBUG_SYNC="now SIGNAL alter_signal";
connection default;
--error ER_DUP_ENTRY
reap;
connection con1;
rollback;
connection default;
disconnect con1;
DROP TABLE t1;

CREATE TABLE t1(f1 CHAR(100), f2 CHAR(100) as (f1) VIRTUAL)ENGINE=InnoDB;
--error ER_DUP_FIELDNAME
ALTER TABLE t1 ADD COLUMN f3 CHAR(100) AS (f2) VIRTUAL, ADD INDEX(f3(10), f1, f3(12));
DROP TABLE t1;
SET DEBUG_SYNC=RESET;