Online ALTER fails due to intermediate DML which is later overridden

--source include/have_debug_sync.inc

create table t (a int);

insert into t values (1);

set debug_sync= 'alter_table_online_progress WAIT_FOR go';

--send

  alter table t modify a tinyint, algorithm=copy, lock=none;

--connect (con_dml,localhost,root,,test)

insert into t values (1000);

update t set a = 10 where a > 100;

select * from t;

set debug_sync= 'now signal go';

--connection default

--reap

show create table t;

select * from t;

# Cleanup

drop table t;

set debug_sync= reset;

--disconnect con_dml

select * from t;

a

1

10

set debug_sync= 'now signal go';

connection default;

bug.t                                    [ fail ]

        Test ended at 2023-07-04 22:24:16

CURRENT_TEST: bug.t

mysqltest: At line 17: query 'reap' failed: ER_WARN_DATA_OUT_OF_RANGE (1264): Out of range value for column 'a' at row 2