Bug#27327 information_schema status views, variable_value conversion

Type of 'Slave_running' status variable is changed to bool

mysql-test/r/compress.result

 SHOW STATUS LIKE 'Compression';
 Variable_name	Value
 Compression	ON
+select * from information_schema.session_status where variable_name= 'COMPRESSION';
+VARIABLE_NAME	VARIABLE_VALUE
+COMPRESSION	1.0000000
 drop table if exists t1,t2,t3,t4;
 CREATE TABLE t1 (
 Period smallint(4) unsigned zerofill DEFAULT '0000' NOT NULL,

mysql-test/r/rpl_packet.result

@@ -14,6 +14,12 @@ INSERT INTO `t1`(`f1`) VALUES ('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 select count(*) from `DB_NAME_OF_MAX_LENGTH_AKA_NAME_LEN_64_BYTES_____________________`.`t1` /* must be 1 */;
 count(*)
 1
+SHOW STATUS LIKE 'Slave_running';
+Variable_name	Value
+Slave_running	ON
+select * from information_schema.session_status where variable_name= 'SLAVE_RUNNING';
+VARIABLE_NAME	VARIABLE_VALUE
+SLAVE_RUNNING	1.0000000
 drop database DB_NAME_OF_MAX_LENGTH_AKA_NAME_LEN_64_BYTES_____________________;
 SET @@global.max_allowed_packet=4096;
 SET @@global.net_buffer_length=4096;

mysql-test/t/compress.test

@@ -10,6 +10,7 @@ connect (comp_con,localhost,root,,,,,COMPRESS);
 
 # Check compression turned on
 SHOW STATUS LIKE 'Compression';
+select * from information_schema.session_status where variable_name= 'COMPRESSION';
 
 # Source select test case
 -- source include/common-tests.inc

mysql-test/t/rpl_packet.test

@@ -29,6 +29,8 @@ connection slave;
 sync_with_master;
 eval select count(*) from `$db`.`t1` /* must be 1 */;
 
+SHOW STATUS LIKE 'Slave_running';
+select * from information_schema.session_status where variable_name= 'SLAVE_RUNNING';
 connection master;
 eval drop database $db;
 save_master_pos;

sql/mysqld.cc

@@ -6513,10 +6513,11 @@ static int show_rpl_status(THD *thd, SHOW_VAR *var, char *buff)
 
 static int show_slave_running(THD *thd, SHOW_VAR *var, char *buff)
 {
-  var->type= SHOW_CHAR;
+  var->type= SHOW_MY_BOOL;
   pthread_mutex_lock(&LOCK_active_mi);
-  var->value= const_cast<char*>((active_mi && active_mi->slave_running &&
-               active_mi->rli.slave_running) ? "ON" : "OFF");
+  var->value= buff;
+  *((my_bool *)buff)= (my_bool) (active_mi && active_mi->slave_running &&
+                                 active_mi->rli.slave_running);
   pthread_mutex_unlock(&LOCK_active_mi);
   return 0;
 }