config root man

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

--echo #
--echo # Bug #21794102 HANDLE_FATAL_SIGNAL (SIG=11) IN
--echo # DICT_TABLE_T::GET_REF_COUNT
--echo #

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

create table t1 (f1 int primary key, f2 int) engine=innodb;
insert into t1 values (1, 1);

set debug ='d,test_sys_tablestats';
--disable_result_log
set debug_sync = 'dict_table_not_protected SIGNAL have_t1 WAIT_FOR del_t1';
--send
select name from information_schema.innodb_sys_tablestats;

--echo # Connection con1:
connect (con1,localhost,root,,test);
set debug_sync = 'now WAIT_FOR have_t1';
drop table t1;
set debug_sync = 'now SIGNAL del_t1';

--echo # Connection default:
connection default;
--reap;
--enable_result_log

disconnect con1;

set debug_sync = reset;
set debug = reset;

# Wait till all disconnects are completed
--source include/wait_until_count_sessions.inc

set global innodb_background_drop_list_empty = 0;