#
# Bug#38231 Innodb crash in lock_reset_all_on_table() on TRUNCATE + LOCK / UNLOCK
# http://bugs.mysql.com/38231
#

-- source include/have_innodb.inc

SET storage_engine=InnoDB;

# we care only that the following SQL commands do not crash the server
-- disable_query_log
-- disable_result_log

DROP TABLE IF EXISTS bug38231;
CREATE TABLE bug38231 (a INT);

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

-- connection con1
SET autocommit=0;
LOCK TABLE bug38231 WRITE;

-- connection con2
SET autocommit=0;
-- send
LOCK TABLE bug38231 WRITE;

-- connection default
-- send
TRUNCATE TABLE bug38231;

-- connection con1
# give time to TRUNCATE and others to be executed; without sleep, sometimes
# UNLOCK executes before TRUNCATE
# TODO: Replace with wait_condition once possible under embedded server.
-- sleep 0.2
# this crashes the server if the bug is present
UNLOCK TABLES;

# clean up

-- connection con2
-- reap
UNLOCK TABLES;

-- connection default
-- reap
-- disconnect con1
-- disconnect con2

# test that TRUNCATE works with with row-level locks

-- enable_query_log
-- enable_result_log

INSERT INTO bug38231 VALUES (1), (10), (300);

-- connect (con4,localhost,root,,)

-- connection con4
SET autocommit=0;
SELECT * FROM bug38231 FOR UPDATE;

-- connection default
TRUNCATE TABLE bug38231;

-- connection con4
COMMIT;

-- connection default

-- disconnect con4

DROP TABLE bug38231;
