File: plugin_vars.test

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--echo #
--echo # MDEV-5345 - Deadlock between mysql_change_user(), SHOW VARIABLES and
--echo #             INSTALL PLUGIN
--echo #

# Prepare test
delimiter |;
CREATE PROCEDURE p_install(x INT)
BEGIN
  DECLARE CONTINUE HANDLER FOR 1126 BEGIN END;
  WHILE x DO
    SET x= x - 1;
    INSTALL PLUGIN no_such_plugin SONAME 'no_such_object';
  END WHILE;
END|

CREATE PROCEDURE p_show_vars(x INT)
WHILE x DO
  SET x= x - 1;
  SHOW VARIABLES;
END WHILE|
delimiter ;|

connect(con1, localhost, root,,);
connect(con2, localhost, root,,);

# Start test
connection con1;
--send CALL p_install(100)

connection con2;
--send CALL p_show_vars(100)

connection default;

disable_result_log;
let $i= 100;
while ($i)
{
  change_user;
  dec $i;
}

# Cleanup
connection con1;
reap;
connection con2;
reap;
connection default;
enable_result_log;

disconnect con1;
disconnect con2;
USE test;
DROP PROCEDURE p_install;
DROP PROCEDURE p_show_vars;