set @save_query_cache_size=@@global.query_cache_size;
--source include/default_charset.inc
--source qc_info_init.inc

drop table t1;
# the query was invalidated
select statement_schema, statement_text, result_blocks_count, result_blocks_size from information_schema.query_cache_info;

set global query_cache_size = 0;
select * from information_schema.query_cache_info;

set global query_cache_size= default;
set global query_cache_type=default;

--error ER_PARSE_ERROR
show query_cache_info;
--error ER_PARSE_ERROR
flush query_cache_info;

set @@global.query_cache_size=@save_query_cache_size;