--source include/have_debug.inc

create table t1 (f1 int primary key) engine=innodb;
create table t2 (f1 int primary key,
    constraint c1 foreign key (f1) references t1(f1)
    on update cascade
    on delete cascade) engine=innodb;
create table t3 (f1 int primary key,
    constraint c2 foreign key (f1) references t1(f1)
    on update cascade
    on delete cascade) engine=innodb;
show create table t1;
show create table t2;
show create table t3;

insert into t1 values (1);
insert into t1 values (2);
insert into t1 values (3);

insert into t2 values (1);
insert into t2 values (2);
insert into t2 values (3);

insert into t3 values (1);
insert into t3 values (2);
insert into t3 values (3);

select f1 from t1;
select f1 from t2;
select f1 from t3;

SET DEBUG='+d,dml_cascade_only_once';
SET DEBUG='+d,row_upd_cascade_lock_wait_err';
update t1 set f1 = 100 where f1 = 2;

select f1 from t1;
select f1 from t2;
select f1 from t3;

drop table t2;
drop table t3;
drop table t1;