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

SET DEBUG_SYNC='reset';

# Save the initial number of concurrent sessions
--source include/count_sessions.inc

create table t1 (f1 integer, key k1 (f1)) engine=innodb;
create table t2 (f1 int, f2 int, key(f1), key(f2)) engine=innodb;
create table t3 (f2 int, key(f2)) engine=innodb;

insert into t1 values (10);
insert into t2 values (10, 20);
insert into t3 values (20);

alter table t2 add constraint c1 foreign key (f1)
    references t1(f1) on update cascade;

show create table t1;
show create table t2;
show create table t3;

SET DEBUG_SYNC='alter_table_before_rename_result_table
   SIGNAL update_can_proceed WAIT_FOR dict_unfreeze';

--send
alter table t2 add constraint z1 foreign key (f2)
    references t3(f2) on update cascade;

connect (thr2,localhost,root,,);
connection thr2;

SET DEBUG_SYNC='innodb_row_update_for_mysql_begin
                            WAIT_FOR update_can_proceed';
SET DEBUG_SYNC='innodb_dml_cascade_dict_unfreeze SIGNAL dict_unfreeze
                            WAIT_FOR  foreign_free_cache';

--send
update ignore t1 set f1 = 20;

connection default;
--replace_regex /'[^']*test\/#sql2-[0-9a-f-]*'/'#sql2-temporary'/
--error ER_ERROR_ON_RENAME
reap;

SET DEBUG_SYNC='now SIGNAL foreign_free_cache';

connection thr2;
reap;
disconnect thr2;
--source include/wait_until_disconnected.inc

connection default;

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

# Wait till we reached the initial number of concurrent sessions
--source include/wait_until_count_sessions.inc

SET DEBUG_SYNC='reset';
