Tests of syncronization of stored procedure execution.
#
# Bug#48157: crash in Item_field::used_tables
#
CREATE TABLE t1 AS SELECT 1 AS a, 1 AS b;
CREATE TABLE t2 AS SELECT 1 AS a, 1 AS b;
CREATE PROCEDURE p1()
BEGIN
UPDATE t1 JOIN t2 USING( a, b ) SET t1.b = 1, t2.b = 1;
END|
LOCK TABLES t1 WRITE, t2 WRITE;
SET DEBUG_SYNC = 'multi_update_reopen_tables SIGNAL parked WAIT_FOR go';
CALL p1();
DROP TABLE t1, t2;
SET DEBUG_SYNC = 'now WAIT_FOR parked';
CREATE TABLE t1 AS SELECT 1 AS a, 1 AS b;
CREATE TABLE t2 AS SELECT 1 AS a, 1 AS b;
SET DEBUG_SYNC = 'now SIGNAL go';
# Without the DEBUG_SYNC supplied in the same patch as this test in the 
# code, this test statement will hang.
DROP TABLE t1, t2;
DROP PROCEDURE p1;
SET DEBUG_SYNC = 'RESET';