# test for BUG#41029:
# "MRR: SELECT FOR UPDATE fails to lock gaps (InnoDB table)"

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

select @default_binlog_format:=@@global.binlog_format;
set global binlog_format=row;

connect (con1,localhost,root,,);
connect (con2,localhost,root,,);

connection con1;

# bug requires this
set session debug_dbug="+d,optimizer_innodb_ds_mrr";

set autocommit=0;
use test;
drop table if exists t1;
create table t1 (dummy int primary key, a int unique, b int) engine=innodb;
insert into t1 values(1,1,1),(3,3,3),(5,5,5);
commit;
set session transaction isolation level repeatable read;
select @@tx_isolation;
start transaction;
select * from t1 where a > 2 for update;

connection con2;

use test;
set autocommit=0;
start transaction;
select 1;
--error ER_LOCK_WAIT_TIMEOUT
insert into t1 values(2,2,2);
rollback;

connection con1;
rollback;

drop table t1;
connection default;
set global binlog_format=@default_binlog_format;