5.6.26

mysql-test/suite/perfschema/r/digest_null_literal.result

@@ -16,12 +16,12 @@ NULL	NULL	NULL	1	2	3	NULL	NULL
 SELECT SCHEMA_NAME, DIGEST_TEXT, COUNT_STAR
 FROM performance_schema.events_statements_summary_by_digest;
 SCHEMA_NAME	DIGEST_TEXT	COUNT_STAR
-test	TRUNCATE TABLE performance_schema . events_statements_summary_by_digest 	1
+test	TRUNCATE TABLE `performance_schema` . `events_statements_summary_by_digest` 	1
 test	SELECT ? 	1
 test	SELECT ? FROM DUAL 	1
 test	SELECT ?, ... 	2
 test	SELECT ? IS NULL 	1
 test	SELECT ? IS NOT NULL 	1
 test	SELECT ? IS NULL , ? IS NULL , ? IS NOT NULL , ? IS NOT NULL 	1
-test	CREATE TABLE foo ( a INTEGER DEFAULT ? , b INTEGER NOT NULL DEFAULT ? , c INTEGER NOT NULL ) 	1
-test	DROP TABLE foo 	1
+test	CREATE TABLE `foo` ( `a` INTEGER DEFAULT ? , `b` INTEGER NOT NULL DEFAULT ? , `c` INTEGER NOT NULL ) 	1
+test	DROP TABLE `foo` 	1

mysql-test/suite/perfschema/r/digest_table_full.result

@@ -113,7 +113,7 @@ SELECT SCHEMA_NAME, DIGEST, DIGEST_TEXT, COUNT_STAR, SUM_ROWS_AFFECTED, SUM_WARN
 SUM_ERRORS FROM performance_schema.events_statements_summary_by_digest;
 SCHEMA_NAME	DIGEST	DIGEST_TEXT	COUNT_STAR	SUM_ROWS_AFFECTED	SUM_WARNINGS	SUM_ERRORS
 NULL	NULL	NULL	55	32	1	2
-statements_digest	e4a84a547a18a89f4708509a720def58	TRUNCATE TABLE performance_schema . events_statements_summary_by_digest 	1	0	0	0
+statements_digest	01cfd3c48ebe150803a02f0b32ab4f7b	TRUNCATE TABLE `performance_schema` . `events_statements_summary_by_digest` 	1	0	0	0
 SHOW VARIABLES LIKE "performance_schema_digests_size";
 Variable_name	Value
 performance_schema_digests_size	2

mysql-test/suite/perfschema/r/global_read_lock.result

@@ -20,11 +20,13 @@ lock tables performance_schema.setup_instruments write;
 connection default;
 select event_name,
 left(source, locate(":", source)) as short_source,
-timer_end, timer_wait, operation
+if(timer_end IS NULL, NULL, "SET") as timer_end,
+if(timer_wait IS NULL, NULL, "SET") as timer_wait,
+operation
 from performance_schema.events_waits_current
 where event_name like "wait/synch/cond/sql/MDL_context::COND_wait_status";
 event_name	short_source	timer_end	timer_wait	operation
-wait/synch/cond/sql/MDL_context::COND_wait_status	mdl.cc:	NULL	NULL	timed_wait
+wait/synch/cond/sql/MDL_context::COND_wait_status	mdl.cc:	SET	SET	timed_wait
 unlock tables;
 update performance_schema.setup_instruments set enabled='NO';
 update performance_schema.setup_instruments set enabled='YES';

mysql-test/suite/perfschema/r/ortho_iter.result

@@ -108,6 +108,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/privilege_table_io.result

@@ -38,6 +38,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/rpl_gtid_func.result

@@ -40,7 +40,7 @@ select digest, digest_text, count_star
 from performance_schema.events_statements_summary_by_digest
 where digest_text like "%in_%_digest%";
 digest	digest_text	count_star
-8d588d616712c7d8dfabf22ce262662b	SELECT ? AS in_master_digest 	1
+83fd516ccb1407eac535df09e5dd1e50	SELECT ? AS `in_master_digest` 	1
 insert into test.marker values (2);
 **** On Slave ****
 select * from test.marker;
@@ -67,7 +67,7 @@ select digest, digest_text, count_star
 from performance_schema.events_statements_summary_by_digest
 where digest_text like "%in_%_digest%";
 digest	digest_text	count_star
-02e25175edc3b2834b9b41d58f5a8a6a	SELECT ? AS in_slave_digest 	1
+073b595f4ca8178745392f361ef8a531	SELECT ? AS `in_slave_digest` 	1
 **** On Master ****
 delete from performance_schema.setup_objects
 where object_schema='master';

mysql-test/suite/perfschema/r/sizing_default.result

@@ -23,6 +23,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	3504
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	7693

mysql-test/suite/perfschema/r/sizing_high.result

@@ -23,6 +23,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	10900
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	23385

mysql-test/suite/perfschema/r/sizing_low.result

@@ -23,6 +23,7 @@ performance_schema_events_waits_history_size	5
 performance_schema_hosts_size	20
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	612
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	1556

mysql-test/suite/perfschema/r/sizing_med.result

@@ -23,6 +23,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1079
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	1754

mysql-test/suite/perfschema/r/sizing_off.result

@@ -14,6 +14,7 @@ performance_schema_events_waits_history_size	-1
 performance_schema_hosts_size	-1
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	-1
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	-1

mysql-test/suite/perfschema/r/start_server_disable_idle.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_disable_stages.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_disable_statements.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_disable_waits.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_innodb.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_account.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_cond_class.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	0
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_cond_inst.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	0
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_file_class.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	0
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_file_inst.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	0

mysql-test/suite/perfschema/r/start_server_no_host.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	0
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_mutex_class.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_mutex_inst.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_rwlock_class.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_rwlock_inst.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_setup_actors.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_setup_objects.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_socket_class.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_socket_inst.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_stage_class.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_stages_history.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_stages_history_long.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_statement_class.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_statements_history.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_statements_history_long.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_table_hdl.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_table_inst.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_thread_class.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_thread_inst.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_user.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_waits_history.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	0
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_no_waits_history_long.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_nothing.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	0
 performance_schema_hosts_size	0
 performance_schema_max_cond_classes	0
 performance_schema_max_cond_instances	0
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	0
 performance_schema_max_file_handles	0
 performance_schema_max_file_instances	0
@@ -119,6 +120,7 @@ performance_schema_events_waits_history_size	0
 performance_schema_hosts_size	0
 performance_schema_max_cond_classes	0
 performance_schema_max_cond_instances	0
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	0
 performance_schema_max_file_handles	0
 performance_schema_max_file_instances	0

mysql-test/suite/perfschema/r/start_server_off.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/start_server_on.result

@@ -85,6 +85,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/statement_digest.result

@@ -112,42 +112,41 @@ DROP TRIGGER trg;
 SELECT SCHEMA_NAME, DIGEST, DIGEST_TEXT, COUNT_STAR, SUM_ROWS_AFFECTED, SUM_WARNINGS,
 SUM_ERRORS FROM performance_schema.events_statements_summary_by_digest;
 SCHEMA_NAME	DIGEST	DIGEST_TEXT	COUNT_STAR	SUM_ROWS_AFFECTED	SUM_WARNINGS	SUM_ERRORS
-statements_digest	e4a84a547a18a89f4708509a720def58	TRUNCATE TABLE performance_schema . events_statements_summary_by_digest 	1	0	0	0
-statements_digest	ab105aea9c15b3842ad161d18349f9c4	SELECT ? FROM t1 	1	0	0	0
-statements_digest	835083efbaa5d8c29d01d558abb8216b	SELECT ? FROM `t1` 	1	0	0	0
-statements_digest	6ff375c6f4b283de91711a78bd91b953	SELECT ?, ... FROM t1 	2	0	0	0
-statements_digest	4879fbad051c94ff76e6ad29effa4903	SELECT ? FROM t2 	1	0	0	0
-statements_digest	b1ea4bca7c91ebd647b6b81e80a2ef94	SELECT ?, ... FROM t2 	2	0	0	0
-statements_digest	14d463345df747d42a036019a5988a9b	INSERT INTO t1 VALUES (?) 	2	2	0	0
-statements_digest	ff2d8aa1fd516f5e25b0faf7b1c80b04	INSERT INTO t2 VALUES (?) 	1	1	0	0
-statements_digest	430116339c3a5bf0a1aa9a96e9cfd354	INSERT INTO t3 VALUES (...) 	4	4	0	0
-statements_digest	01467137a1045e85119538ea248d52dd	INSERT INTO t4 VALUES (...) 	1	1	0	0
-statements_digest	b201a20a2a534d2789750270b7f90fab	INSERT INTO t5 VALUES (...) 	1	1	0	0
-statements_digest	b1a5f24770580f243ad6704590165d90	INSERT INTO t1 VALUES (?) /* , ... */ 	2	7	0	0
-statements_digest	bbbf619ec8ca4ec4a4da28a71eb12a2f	INSERT INTO t3 VALUES (...) /* , ... */ 	1	3	0	0
-statements_digest	de7bdb298875f4ef826383e3fce53ef9	INSERT INTO t5 VALUES (...) /* , ... */ 	1	3	0	0
-statements_digest	cd4a3e419e2eaed79f66a705ff002910	INSERT INTO t6 VALUES (...) 	5	5	0	0
+statements_digest	01cfd3c48ebe150803a02f0b32ab4f7b	TRUNCATE TABLE `performance_schema` . `events_statements_summary_by_digest` 	1	0	0	0
+statements_digest	4a958a8b2138b7ae3b65a0edde877dca	SELECT ? FROM `t1` 	2	0	0	0
+statements_digest	1f346cc75586f18fdded6e2f518e7d25	SELECT ?, ... FROM `t1` 	2	0	0	0
+statements_digest	9ed289e97245aee8872bd79573ff71dc	SELECT ? FROM `t2` 	1	0	0	0
+statements_digest	ec5d6ae42b4292cce44168c701fde301	SELECT ?, ... FROM `t2` 	2	0	0	0
+statements_digest	c689b670f102bc028f36273ed00244de	INSERT INTO `t1` VALUES (?) 	2	2	0	0
+statements_digest	baf2d67435fc5a66f517bd655c9154a3	INSERT INTO `t2` VALUES (?) 	1	1	0	0
+statements_digest	cba557f7a643fac3a34563f74c57f040	INSERT INTO `t3` VALUES (...) 	4	4	0	0
+statements_digest	26f967699697844ef6757a283c0432e0	INSERT INTO `t4` VALUES (...) 	1	1	0	0
+statements_digest	1565e5ec0755d0d212e84567fdb86500	INSERT INTO `t5` VALUES (...) 	1	1	0	0
+statements_digest	931de69cfc4123c9f5ebeb8da2e6fb0e	INSERT INTO `t1` VALUES (?) /* , ... */ 	2	7	0	0
+statements_digest	81d8a0e0212bb8e02ad8f5e84d8c819a	INSERT INTO `t3` VALUES (...) /* , ... */ 	1	3	0	0
+statements_digest	793ba1cc016c6e3c45c63023531955ad	INSERT INTO `t5` VALUES (...) /* , ... */ 	1	3	0	0
+statements_digest	d44b7d3c3f03b5b9605c9cffb537b083	INSERT INTO `t6` VALUES (...) 	5	5	0	0
 statements_digest	f2d57cea9e78e7b37c4509c0564dd1cc	SELECT ? + ? 	3	0	0	0
 statements_digest	02396199eed2345830efcf00e51107ee	SELECT ? 	1	0	0	0
-statements_digest	7c5b403e11cb8fa41954f8b81d47fb44	CREATE SCHEMA statements_digest_temp 	2	2	0	0
-statements_digest	d5c2a9eedc964698407667a633301e69	DROP SCHEMA statements_digest_temp 	2	0	0	0
-statements_digest	add5619cd2761d01c66b68b50a4c0476	SELECT ? FROM no_such_table 	1	0	0	1
-statements_digest	f59e7a7dbcdc342b7ea72ae24e5ef081	CREATE TABLE dup_table ( c CHARACTER (?) ) 	2	0	0	1
-statements_digest	b42311b2b180ba680ebb286f671982f1	DROP TABLE dup_table 	1	0	0	0
-statements_digest	8af43d157243ebdc9dcb1a9502acdd24	INSERT INTO t11 VALUES (?) 	1	1	1	0
+statements_digest	d02f821e8ce0a27519c833324368696d	CREATE SCHEMA `statements_digest_temp` 	2	2	0	0
+statements_digest	5ea9da83763ff4b01e34c408d865568f	DROP SCHEMA `statements_digest_temp` 	2	0	0	0
+statements_digest	ac9dfca3fe35b0d4c43a6bf62a3489b5	SELECT ? FROM `no_such_table` 	1	0	0	1
+statements_digest	9fd65056536a8d74ea107b68849cfd27	CREATE TABLE `dup_table` ( `c` CHARACTER (?) ) 	2	0	0	1
+statements_digest	f259e984954d6d77a9f94230726e1c0f	DROP TABLE `dup_table` 	1	0	0	0
+statements_digest	17c0f9e5abf747e425ae24b66d44cf01	INSERT INTO `t11` VALUES (?) 	1	1	1	0
 statements_digest	cee5b131782212e0ba1cd76ba28485c4	SHOW WARNINGS 	1	0	0	0
-statements_digest	438623439c3a1702203d6190795127ad	PREPARE stmt FROM ? 	1	0	0	0
-statements_digest	e53b71815168ad954fd921a6ae1860c9	EXECUTE stmt 	2	0	0	0
-statements_digest	3bccf5096186ceaf50c11c3deb4e21cf	DEALLOCATE PREPARE stmt 	1	0	0	0
-statements_digest	e20f8d5cb15105439af39592b79c0edd	CREATE PROCEDURE p1 ( ) BEGIN SELECT * FROM t12 ; END 	1	0	0	0
-statements_digest	10298a45c9f7114e4985de53ca99bda7	CALL p1 ( ) 	2	0	0	0
-statements_digest	efc046c5d04acb8afa61326f759ad380	DROP PROCEDURE p1 	1	0	0	0
-statements_digest	8eaf9e776b79f24f2b8fae8efb92d8a4	CREATE FUNCTION `func` ( a INTEGER , b INTEGER ) RETURNS INTEGER (?) RETURN a + b 	1	0	0	0
-statements_digest	b364c71d8c904eb9e95df4d0ca258c00	SELECT func (...) 	2	0	0	0
-statements_digest	88e7ac9784e4561d12fadccde6ea704a	DROP FUNCTION func 	1	0	0	0
-statements_digest	15deeaae5594a691cf21abd4439ee5e6	CREATE TRIGGER trg BEFORE INSERT ON t12 FOR EACH ROW SET @? := ? 	1	0	0	0
-statements_digest	074e38814943a6dce874784d21fea89d	INSERT INTO t12 VALUES (?) 	2	2	0	0
-statements_digest	2b5b02ba54b27638d5d8dbe917ff432d	DROP TRIGGER trg 	1	0	0	0
+statements_digest	44d441f36c0487f8b32b6cb1e37f7c3f	PREPARE `stmt` FROM ? 	1	0	0	0
+statements_digest	73bf0dc38bbbc571613bdb78e85ddb18	EXECUTE `stmt` 	2	0	0	0
+statements_digest	8a87274dfc2961861326c1591f0df4bc	DEALLOCATE PREPARE `stmt` 	1	0	0	0
+statements_digest	639ff9b1728335f463d2ed4134c7ec26	CREATE PROCEDURE `p1` ( ) BEGIN SELECT * FROM `t12` ; END 	1	0	0	0
+statements_digest	627bb08bd333aa83cb4bbad88ab6e6b8	CALL `p1` ( ) 	2	0	0	0
+statements_digest	949464b6c55462d9d7ad3f0a7608db10	DROP PROCEDURE `p1` 	1	0	0	0
+statements_digest	bfc5c562a60a60857a026a17434e77bb	CREATE FUNCTION `func` ( `a` INTEGER , `b` INTEGER ) RETURNS INTEGER (?) RETURN `a` + `b` 	1	0	0	0
+statements_digest	cf6fe4a8895dabaf9c30615b49bce6db	SELECT `func` (...) 	2	0	0	0
+statements_digest	4b2d4d67e2faa0b938156e60e1f2023b	DROP FUNCTION `func` 	1	0	0	0
+statements_digest	b859e51c90bdd984a1226ecf25fd80de	CREATE TRIGGER `trg` BEFORE INSERT ON `t12` FOR EACH ROW SET @? := ? 	1	0	0	0
+statements_digest	cb2f065274b3e03693cb7d5396d4d978	INSERT INTO `t12` VALUES (?) 	2	2	0	0
+statements_digest	903b51b5db2d5393542a7fc2614049fd	DROP TRIGGER `trg` 	1	0	0	0
 ####################################
 # CLEANUP
 ####################################

mysql-test/suite/perfschema/r/statement_digest_consumers.result

@@ -125,42 +125,41 @@ DROP TRIGGER trg;
 ####################################
 SELECT schema_name, digest, digest_text, count_star FROM performance_schema.events_statements_summary_by_digest;
 schema_name	digest	digest_text	count_star
-statements_digest	e4a84a547a18a89f4708509a720def58	TRUNCATE TABLE performance_schema . events_statements_summary_by_digest 	1
-statements_digest	ab105aea9c15b3842ad161d18349f9c4	SELECT ? FROM t1 	1
-statements_digest	835083efbaa5d8c29d01d558abb8216b	SELECT ? FROM `t1` 	1
-statements_digest	6ff375c6f4b283de91711a78bd91b953	SELECT ?, ... FROM t1 	2
-statements_digest	4879fbad051c94ff76e6ad29effa4903	SELECT ? FROM t2 	1
-statements_digest	b1ea4bca7c91ebd647b6b81e80a2ef94	SELECT ?, ... FROM t2 	2
-statements_digest	14d463345df747d42a036019a5988a9b	INSERT INTO t1 VALUES (?) 	2
-statements_digest	ff2d8aa1fd516f5e25b0faf7b1c80b04	INSERT INTO t2 VALUES (?) 	1
-statements_digest	430116339c3a5bf0a1aa9a96e9cfd354	INSERT INTO t3 VALUES (...) 	4
-statements_digest	01467137a1045e85119538ea248d52dd	INSERT INTO t4 VALUES (...) 	1
-statements_digest	b201a20a2a534d2789750270b7f90fab	INSERT INTO t5 VALUES (...) 	1
-statements_digest	b1a5f24770580f243ad6704590165d90	INSERT INTO t1 VALUES (?) /* , ... */ 	2
-statements_digest	bbbf619ec8ca4ec4a4da28a71eb12a2f	INSERT INTO t3 VALUES (...) /* , ... */ 	1
-statements_digest	de7bdb298875f4ef826383e3fce53ef9	INSERT INTO t5 VALUES (...) /* , ... */ 	1
-statements_digest	cd4a3e419e2eaed79f66a705ff002910	INSERT INTO t6 VALUES (...) 	5
+statements_digest	01cfd3c48ebe150803a02f0b32ab4f7b	TRUNCATE TABLE `performance_schema` . `events_statements_summary_by_digest` 	1
+statements_digest	4a958a8b2138b7ae3b65a0edde877dca	SELECT ? FROM `t1` 	2
+statements_digest	1f346cc75586f18fdded6e2f518e7d25	SELECT ?, ... FROM `t1` 	2
+statements_digest	9ed289e97245aee8872bd79573ff71dc	SELECT ? FROM `t2` 	1
+statements_digest	ec5d6ae42b4292cce44168c701fde301	SELECT ?, ... FROM `t2` 	2
+statements_digest	c689b670f102bc028f36273ed00244de	INSERT INTO `t1` VALUES (?) 	2
+statements_digest	baf2d67435fc5a66f517bd655c9154a3	INSERT INTO `t2` VALUES (?) 	1
+statements_digest	cba557f7a643fac3a34563f74c57f040	INSERT INTO `t3` VALUES (...) 	4
+statements_digest	26f967699697844ef6757a283c0432e0	INSERT INTO `t4` VALUES (...) 	1
+statements_digest	1565e5ec0755d0d212e84567fdb86500	INSERT INTO `t5` VALUES (...) 	1
+statements_digest	931de69cfc4123c9f5ebeb8da2e6fb0e	INSERT INTO `t1` VALUES (?) /* , ... */ 	2
+statements_digest	81d8a0e0212bb8e02ad8f5e84d8c819a	INSERT INTO `t3` VALUES (...) /* , ... */ 	1
+statements_digest	793ba1cc016c6e3c45c63023531955ad	INSERT INTO `t5` VALUES (...) /* , ... */ 	1
+statements_digest	d44b7d3c3f03b5b9605c9cffb537b083	INSERT INTO `t6` VALUES (...) 	5
 statements_digest	f2d57cea9e78e7b37c4509c0564dd1cc	SELECT ? + ? 	3
 statements_digest	02396199eed2345830efcf00e51107ee	SELECT ? 	1
-statements_digest	7c5b403e11cb8fa41954f8b81d47fb44	CREATE SCHEMA statements_digest_temp 	2
-statements_digest	d5c2a9eedc964698407667a633301e69	DROP SCHEMA statements_digest_temp 	2
-statements_digest	add5619cd2761d01c66b68b50a4c0476	SELECT ? FROM no_such_table 	1
-statements_digest	f59e7a7dbcdc342b7ea72ae24e5ef081	CREATE TABLE dup_table ( c CHARACTER (?) ) 	2
-statements_digest	b42311b2b180ba680ebb286f671982f1	DROP TABLE dup_table 	1
-statements_digest	8af43d157243ebdc9dcb1a9502acdd24	INSERT INTO t11 VALUES (?) 	1
+statements_digest	d02f821e8ce0a27519c833324368696d	CREATE SCHEMA `statements_digest_temp` 	2
+statements_digest	5ea9da83763ff4b01e34c408d865568f	DROP SCHEMA `statements_digest_temp` 	2
+statements_digest	ac9dfca3fe35b0d4c43a6bf62a3489b5	SELECT ? FROM `no_such_table` 	1
+statements_digest	9fd65056536a8d74ea107b68849cfd27	CREATE TABLE `dup_table` ( `c` CHARACTER (?) ) 	2
+statements_digest	f259e984954d6d77a9f94230726e1c0f	DROP TABLE `dup_table` 	1
+statements_digest	17c0f9e5abf747e425ae24b66d44cf01	INSERT INTO `t11` VALUES (?) 	1
 statements_digest	cee5b131782212e0ba1cd76ba28485c4	SHOW WARNINGS 	1
-statements_digest	438623439c3a1702203d6190795127ad	PREPARE stmt FROM ? 	1
-statements_digest	e53b71815168ad954fd921a6ae1860c9	EXECUTE stmt 	2
-statements_digest	3bccf5096186ceaf50c11c3deb4e21cf	DEALLOCATE PREPARE stmt 	1
-statements_digest	e20f8d5cb15105439af39592b79c0edd	CREATE PROCEDURE p1 ( ) BEGIN SELECT * FROM t12 ; END 	1
-statements_digest	10298a45c9f7114e4985de53ca99bda7	CALL p1 ( ) 	2
-statements_digest	efc046c5d04acb8afa61326f759ad380	DROP PROCEDURE p1 	1
-statements_digest	8eaf9e776b79f24f2b8fae8efb92d8a4	CREATE FUNCTION `func` ( a INTEGER , b INTEGER ) RETURNS INTEGER (?) RETURN a + b 	1
-statements_digest	b364c71d8c904eb9e95df4d0ca258c00	SELECT func (...) 	2
-statements_digest	88e7ac9784e4561d12fadccde6ea704a	DROP FUNCTION func 	1
-statements_digest	15deeaae5594a691cf21abd4439ee5e6	CREATE TRIGGER trg BEFORE INSERT ON t12 FOR EACH ROW SET @? := ? 	1
-statements_digest	074e38814943a6dce874784d21fea89d	INSERT INTO t12 VALUES (?) 	2
-statements_digest	2b5b02ba54b27638d5d8dbe917ff432d	DROP TRIGGER trg 	1
+statements_digest	44d441f36c0487f8b32b6cb1e37f7c3f	PREPARE `stmt` FROM ? 	1
+statements_digest	73bf0dc38bbbc571613bdb78e85ddb18	EXECUTE `stmt` 	2
+statements_digest	8a87274dfc2961861326c1591f0df4bc	DEALLOCATE PREPARE `stmt` 	1
+statements_digest	639ff9b1728335f463d2ed4134c7ec26	CREATE PROCEDURE `p1` ( ) BEGIN SELECT * FROM `t12` ; END 	1
+statements_digest	627bb08bd333aa83cb4bbad88ab6e6b8	CALL `p1` ( ) 	2
+statements_digest	949464b6c55462d9d7ad3f0a7608db10	DROP PROCEDURE `p1` 	1
+statements_digest	bfc5c562a60a60857a026a17434e77bb	CREATE FUNCTION `func` ( `a` INTEGER , `b` INTEGER ) RETURNS INTEGER (?) RETURN `a` + `b` 	1
+statements_digest	cf6fe4a8895dabaf9c30615b49bce6db	SELECT `func` (...) 	2
+statements_digest	4b2d4d67e2faa0b938156e60e1f2023b	DROP FUNCTION `func` 	1
+statements_digest	b859e51c90bdd984a1226ecf25fd80de	CREATE TRIGGER `trg` BEFORE INSERT ON `t12` FOR EACH ROW SET @? := ? 	1
+statements_digest	cb2f065274b3e03693cb7d5396d4d978	INSERT INTO `t12` VALUES (?) 	2
+statements_digest	903b51b5db2d5393542a7fc2614049fd	DROP TRIGGER `trg` 	1
 SELECT digest, digest_text FROM performance_schema.events_statements_current;
 digest	digest_text
 ####################################

mysql-test/suite/perfschema/r/statement_digest_long_query.result

@@ -8,5 +8,5 @@ SELECT 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1
 ####################################
 SELECT schema_name, digest, digest_text, count_star FROM events_statements_summary_by_digest;
 schema_name	digest	digest_text	count_star
-performance_schema	e8d937c7ecf79e105de0f9e364fa5edb	TRUNCATE TABLE events_statements_summary_by_digest 	1
+performance_schema	d12faab4b919fcc50abb18a009fb6b0b	TRUNCATE TABLE `events_statements_summary_by_digest` 	1
 performance_schema	5d9a2f95653d8ca9d9cea3eefff7e361	SELECT ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? 	1

mysql-test/suite/perfschema/r/table_aggregate_global_2u_2t.result

@@ -55,6 +55,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_aggregate_global_2u_3t.result

@@ -54,6 +54,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_aggregate_global_4u_2t.result

@@ -55,6 +55,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_aggregate_global_4u_3t.result

@@ -54,6 +54,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_aggregate_hist_2u_2t.result

@@ -53,6 +53,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_aggregate_hist_2u_3t.result

@@ -52,6 +52,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_aggregate_hist_4u_2t.result

@@ -53,6 +53,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_aggregate_hist_4u_3t.result

@@ -52,6 +52,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_aggregate_off.result

@@ -54,6 +54,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_aggregate_thread_2u_2t.result

@@ -55,6 +55,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_aggregate_thread_2u_3t.result

@@ -54,6 +54,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_aggregate_thread_4u_2t.result

@@ -55,6 +55,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_aggregate_thread_4u_3t.result

@@ -54,6 +54,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_io_aggregate_global_2u_2t.result

@@ -57,6 +57,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_io_aggregate_global_2u_3t.result

@@ -56,6 +56,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_io_aggregate_global_4u_2t.result

@@ -57,6 +57,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_io_aggregate_global_4u_3t.result

@@ -56,6 +56,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_io_aggregate_hist_2u_2t.result

@@ -55,6 +55,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_io_aggregate_hist_2u_3t.result

@@ -54,6 +54,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_io_aggregate_hist_4u_2t.result

@@ -55,6 +55,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_io_aggregate_hist_4u_3t.result

@@ -54,6 +54,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_io_aggregate_thread_2u_2t.result

@@ -57,6 +57,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_io_aggregate_thread_2u_3t.result

@@ -56,6 +56,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_io_aggregate_thread_4u_2t.result

@@ -57,6 +57,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_io_aggregate_thread_4u_3t.result

@@ -56,6 +56,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_lock_aggregate_global_2u_2t.result

@@ -57,6 +57,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_lock_aggregate_global_2u_3t.result

@@ -56,6 +56,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_lock_aggregate_global_4u_2t.result

@@ -57,6 +57,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_lock_aggregate_global_4u_3t.result

@@ -56,6 +56,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_lock_aggregate_hist_2u_2t.result

@@ -55,6 +55,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_lock_aggregate_hist_2u_3t.result

@@ -54,6 +54,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_lock_aggregate_hist_4u_2t.result

@@ -55,6 +55,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_lock_aggregate_hist_4u_3t.result

@@ -54,6 +54,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_lock_aggregate_thread_2u_2t.result

@@ -57,6 +57,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_lock_aggregate_thread_2u_3t.result

@@ -56,6 +56,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_lock_aggregate_thread_4u_2t.result

@@ -57,6 +57,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/table_lock_aggregate_thread_4u_3t.result

@@ -56,6 +56,7 @@ performance_schema_events_waits_history_size	10
 performance_schema_hosts_size	100
 performance_schema_max_cond_classes	80
 performance_schema_max_cond_instances	1000
+performance_schema_max_digest_length	1024
 performance_schema_max_file_classes	50
 performance_schema_max_file_handles	32768
 performance_schema_max_file_instances	10000

mysql-test/suite/perfschema/r/unary_digest.result

@@ -39,9 +39,9 @@ ERROR 42S02: Table 'test.expect_unchanged' doesn't exist
 SELECT SCHEMA_NAME, DIGEST_TEXT, COUNT_STAR
 FROM performance_schema.events_statements_summary_by_digest;
 SCHEMA_NAME	DIGEST_TEXT	COUNT_STAR
-test	TRUNCATE TABLE performance_schema . events_statements_summary_by_digest 	1
-test	SELECT ? FROM expect_unary 	5
-test	SELECT ? + ? FROM expect_binary 	2
-test	SELECT ? - ? FROM expect_binary 	2
-test	INSERT INTO expect_full_reduce VALUES (...) 	27
-test	SELECT a - b , a + b , - a , - b , + a , + b FROM expect_unchanged 	1
+test	TRUNCATE TABLE `performance_schema` . `events_statements_summary_by_digest` 	1
+test	SELECT ? FROM `expect_unary` 	5
+test	SELECT ? + ? FROM `expect_binary` 	2
+test	SELECT ? - ? FROM `expect_binary` 	2
+test	INSERT INTO `expect_full_reduce` VALUES (...) 	27
+test	SELECT `a` - `b` , `a` + `b` , - `a` , - `b` , + `a` , + `b` FROM `expect_unchanged` 	1

mysql-test/suite/perfschema/t/global_read_lock.test

@@ -56,7 +56,9 @@ let $wait_condition= select 1 from performance_schema.events_waits_current where
 # Observe the blocked thread in the performance schema :)
 select event_name,
   left(source, locate(":", source)) as short_source,
-  timer_end, timer_wait, operation
+  if(timer_end IS NULL, NULL, "SET") as timer_end,
+  if(timer_wait IS NULL, NULL, "SET") as timer_wait,
+  operation
   from performance_schema.events_waits_current
   where event_name like "wait/synch/cond/sql/MDL_context::COND_wait_status";
 

storage/perfschema/pfs_account.cc

@@ -69,7 +69,7 @@ int init_account(const PFS_global_param *param)
 
   if (account_max > 0)
   {
-    account_array= PFS_MALLOC_ARRAY(account_max, PFS_account,
+    account_array= PFS_MALLOC_ARRAY(account_max, sizeof(PFS_account), PFS_account,
                                     MYF(MY_ZEROFILL));
     if (unlikely(account_array == NULL))
       return 1;

storage/perfschema/pfs_con_slice.cc

-/* Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -39,7 +39,8 @@ PFS_connection_slice::alloc_waits_slice(uint sizing)
 
   if (sizing > 0)
   {
-    slice= PFS_MALLOC_ARRAY(sizing, PFS_single_stat, MYF(MY_ZEROFILL));
+    slice= PFS_MALLOC_ARRAY(sizing, sizeof(PFS_single_stat), PFS_single_stat,
+                            MYF(MY_ZEROFILL));
     if (unlikely(slice == NULL))
       return NULL;
 
@@ -58,7 +59,8 @@ PFS_connection_slice::alloc_stages_slice(uint sizing)
 
   if (sizing > 0)
   {
-    slice= PFS_MALLOC_ARRAY(sizing, PFS_stage_stat, MYF(MY_ZEROFILL));
+    slice= PFS_MALLOC_ARRAY(sizing, sizeof(PFS_stage_stat), PFS_stage_stat,
+                            MYF(MY_ZEROFILL));
     if (unlikely(slice == NULL))
       return NULL;
 
@@ -77,7 +79,8 @@ PFS_connection_slice::alloc_statements_slice(uint sizing)
 
   if (sizing > 0)
   {
-    slice= PFS_MALLOC_ARRAY(sizing, PFS_statement_stat, MYF(MY_ZEROFILL));
+    slice= PFS_MALLOC_ARRAY(sizing, sizeof(PFS_statement_stat), PFS_statement_stat,
+                            MYF(MY_ZEROFILL));
     if (unlikely(slice == NULL))
       return NULL;
 

storage/perfschema/pfs_digest.cc

@@ -33,7 +33,7 @@
 #include "sql_string.h"
 #include <string.h>
 
-ulong digest_max= 0;
+size_t digest_max= 0;
 ulong digest_lost= 0;
 
 /** EVENTS_STATEMENTS_HISTORY_LONG circular buffer. */
@@ -57,8 +57,6 @@ static bool digest_hash_inited= false;
 */
 int init_digest(const PFS_global_param *param)
 {
-  unsigned int index;
-
   /*
     Allocate memory for statements_digest_stat_array based on
     performance_schema_digests_size values
@@ -73,6 +71,7 @@ int init_digest(const PFS_global_param *param)
 
   statements_digest_stat_array=
     PFS_MALLOC_ARRAY(digest_max,
+                     sizeof(PFS_statements_digest_stat),
                      PFS_statements_digest_stat,
                      MYF(MY_ZEROFILL));
 
@@ -84,8 +83,12 @@ int init_digest(const PFS_global_param *param)
 
   if (pfs_max_digest_length > 0)
   {
+    /* Size of each digest array. */
+    size_t digest_memory_size= pfs_max_digest_length * sizeof(unsigned char);
+
     statements_digest_token_array=
-      PFS_MALLOC_ARRAY(digest_max * pfs_max_digest_length,
+      PFS_MALLOC_ARRAY(digest_max,
+                       digest_memory_size,
                        unsigned char,
                        MYF(MY_ZEROFILL));
 
@@ -96,7 +99,7 @@ int init_digest(const PFS_global_param *param)
     }
   }
 
-  for (index= 0; index < digest_max; index++)
+  for (size_t index= 0; index < digest_max; index++)
   {
     statements_digest_stat_array[index].reset_data(statements_digest_token_array
                                                    + index * pfs_max_digest_length, pfs_max_digest_length);
@@ -144,7 +147,7 @@ int init_digest_hash(void)
     lf_hash_init(&digest_hash, sizeof(PFS_statements_digest_stat*),
                  LF_HASH_UNIQUE, 0, 0, digest_hash_get_key,
                  &my_charset_bin);
-    digest_hash.size= digest_max;
+    digest_hash.size= (int32)digest_max;
     digest_hash_inited= true;
   }
   return 0;
@@ -334,8 +337,6 @@ void PFS_statements_digest_stat::reset_index(PFS_thread *thread)
 
 void reset_esms_by_digest()
 {
-  uint index;
-
   if (statements_digest_stat_array == NULL)
     return;
 
@@ -344,7 +345,7 @@ void reset_esms_by_digest()
     return;
 
   /* Reset statements_digest_stat_array. */
-  for (index= 0; index < digest_max; index++)
+  for (size_t index= 0; index < digest_max; index++)
   {
     statements_digest_stat_array[index].reset_index(thread);
     statements_digest_stat_array[index].reset_data(statements_digest_token_array + index * pfs_max_digest_length, pfs_max_digest_length);

storage/perfschema/pfs_digest.h

@@ -27,7 +27,7 @@
 #include "sql_digest.h"
 
 extern bool flag_statements_digest;
-extern ulong digest_max;
+extern size_t digest_max;
 extern ulong digest_lost;
 struct PFS_thread;
 

storage/perfschema/pfs_events_stages.cc

-/* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -59,8 +59,8 @@ int init_events_stages_history_long(uint events_stages_history_long_sizing)
     return 0;
 
   events_stages_history_long_array=
-    PFS_MALLOC_ARRAY(events_stages_history_long_size, PFS_events_stages,
-                     MYF(MY_ZEROFILL));
+    PFS_MALLOC_ARRAY(events_stages_history_long_size, sizeof(PFS_events_stages),
+                     PFS_events_stages,  MYF(MY_ZEROFILL));
 
   return (events_stages_history_long_array ? 0 : 1);
 }

storage/perfschema/pfs_events_statements.cc

@@ -30,7 +30,7 @@
 #include "pfs_atomic.h"
 #include "m_string.h"
 
-ulong events_statements_history_long_size= 0;
+size_t events_statements_history_long_size= 0;
 /** Consumer flag for table EVENTS_STATEMENTS_CURRENT. */
 bool flag_events_statements_current= false;
 /** Consumer flag for table EVENTS_STATEMENTS_HISTORY. */
@@ -50,9 +50,8 @@ static unsigned char *h_long_stmts_digest_token_array= NULL;
   Initialize table EVENTS_STATEMENTS_HISTORY_LONG.
   @param events_statements_history_long_sizing       table sizing
 */
-int init_events_statements_history_long(uint events_statements_history_long_sizing)
+int init_events_statements_history_long(size_t events_statements_history_long_sizing)
 {
-  uint index;
   events_statements_history_long_size= events_statements_history_long_sizing;
   events_statements_history_long_full= false;
   PFS_atomic::store_u32(&events_statements_history_long_index, 0);
@@ -61,8 +60,8 @@ int init_events_statements_history_long(uint events_statements_history_long_sizi
     return 0;
 
   events_statements_history_long_array=
-    PFS_MALLOC_ARRAY(events_statements_history_long_size, PFS_events_statements,
-                     MYF(MY_ZEROFILL));
+    PFS_MALLOC_ARRAY(events_statements_history_long_size, sizeof(PFS_events_statements),
+                     PFS_events_statements, MYF(MY_ZEROFILL));
 
   if (events_statements_history_long_array == NULL)
   {
@@ -72,8 +71,11 @@ int init_events_statements_history_long(uint events_statements_history_long_sizi
 
   if (pfs_max_digest_length > 0)
   {
+    /* Size of each digest token array. */
+    size_t digest_text_size= pfs_max_digest_length * sizeof(unsigned char);
+
     h_long_stmts_digest_token_array=
-      PFS_MALLOC_ARRAY(events_statements_history_long_size * pfs_max_digest_length,
+      PFS_MALLOC_ARRAY(events_statements_history_long_size, digest_text_size, 
                        unsigned char, MYF(MY_ZEROFILL));
     if (h_long_stmts_digest_token_array == NULL)
     {
@@ -82,7 +84,7 @@ int init_events_statements_history_long(uint events_statements_history_long_sizi
     }
   }
 
-  for (index= 0; index < events_statements_history_long_size; index++)
+  for (size_t index= 0; index < events_statements_history_long_size; index++)
   {
     events_statements_history_long_array[index].m_digest_storage.reset(h_long_stmts_digest_token_array
                                                                        + index * pfs_max_digest_length, pfs_max_digest_length);

storage/perfschema/pfs_events_statements.h

@@ -106,9 +106,9 @@ extern bool flag_events_statements_history_long;
 extern bool events_statements_history_long_full;
 extern volatile uint32 events_statements_history_long_index;
 extern PFS_events_statements *events_statements_history_long_array;
-extern ulong events_statements_history_long_size;
+extern size_t events_statements_history_long_size;
 
-int init_events_statements_history_long(uint events_statements_history_long_sizing);
+int init_events_statements_history_long(size_t events_statements_history_long_sizing);
 void cleanup_events_statements_history_long();
 
 void reset_events_statements_current();

storage/perfschema/pfs_events_waits.cc

-/* Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -63,8 +63,8 @@ int init_events_waits_history_long(uint events_waits_history_long_sizing)
     return 0;
 
   events_waits_history_long_array=
-    PFS_MALLOC_ARRAY(events_waits_history_long_size, PFS_events_waits,
-                     MYF(MY_ZEROFILL));
+    PFS_MALLOC_ARRAY(events_waits_history_long_size, sizeof(PFS_events_waits),
+                     PFS_events_waits, MYF(MY_ZEROFILL));
 
   return (events_waits_history_long_array ? 0 : 1);
 }

storage/perfschema/pfs_global.cc

-/* Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -49,7 +49,7 @@ void *pfs_malloc(size_t size, myf flags)
   DBUG_ASSERT(! pfs_initialized);
   DBUG_ASSERT(size > 0);
 
-  void *ptr;
+  void *ptr= NULL;
 
 #ifdef PFS_ALIGNEMENT
 #ifdef HAVE_POSIX_MEMALIGN
@@ -125,6 +125,40 @@ void pfs_print_error(const char *format, ...)
   fflush(stderr);
 }
 
+/**
+  Array allocation for the performance schema.
+  Checks for overflow of n * size before allocating.
+  @param n  number of array elements
+  @param size  element size
+  @param flags malloc flags
+  @return pointer to memory on success, else NULL
+*/
+void *pfs_malloc_array(size_t n, size_t size, myf flags)
+{
+  DBUG_ASSERT(n > 0);
+  DBUG_ASSERT(size > 0);
+  size_t array_size= n * size;
+  /* Check for overflow before allocating. */
+  if (is_overflow(array_size, n, size))
+    return NULL;
+  return pfs_malloc(array_size, flags);
+}
+
+/**
+  Detect multiplication overflow.
+  @param product  multiplication product
+  @param n1  operand
+  @param n2  operand
+  @return true if multiplication caused an overflow.
+*/
+bool is_overflow(size_t product, size_t n1, size_t n2)
+{
+  if (n1 != 0 && (product / n1 != n2))
+    return true;
+  else
+    return false;
+}
+
 /** Convert raw ip address into readable format. Do not do a reverse DNS lookup. */
 
 uint pfs_get_socket_address(char *host,

storage/perfschema/pfs_global.h

-/* Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -43,18 +43,24 @@ extern size_t pfs_allocated_memory;
 
 void *pfs_malloc(size_t size, myf flags);
 
+/** Allocate an array of structures with overflow check. */
+void *pfs_malloc_array(size_t n, size_t size, myf flags);
+
 /**
   Helper, to allocate an array of structures.
-  @param n number of elements in the array.
-  @param T type of an element.
+  @param n number of elements in the array
+  @param s size of array element
+  @param T type of an element
   @param f flags to use when allocating memory
 */
-#define PFS_MALLOC_ARRAY(n, T, f) \
-  reinterpret_cast<T*> (pfs_malloc((n) * sizeof(T), (f)))
+#define PFS_MALLOC_ARRAY(n, s, T, f) \
+  reinterpret_cast<T*>(pfs_malloc_array((n), (s), (f)))
 
 /** Free memory allocated with @sa pfs_malloc. */
 void pfs_free(void *ptr);
 
+/** Detect multiplication overflow. */
+bool is_overflow(size_t product, size_t n1, size_t n2);
 
 uint pfs_get_socket_address(char *host,
                             uint host_len,

storage/perfschema/pfs_host.cc

@@ -66,7 +66,7 @@ int init_host(const PFS_global_param *param)
 
   if (host_max > 0)
   {
-    host_array= PFS_MALLOC_ARRAY(host_max, PFS_host,
+    host_array= PFS_MALLOC_ARRAY(host_max, sizeof(PFS_host), PFS_host,
                                  MYF(MY_ZEROFILL));
     if (unlikely(host_array == NULL))
       return 1;