--source include/have_innodb.inc

CREATE TABLE t (a SERIAL) ENGINE=InnoDB;

connect (dml,localhost,root);
# At the end of this statement, close_thread_tables()
# should add the open table handle to the table definition cache (tdc).
select * from t;

connection default;
# This should purge the handle from the tdc;
# otherwise ha_innobase::truncate() would hang,
# waiting for the reference count to drop to 0.
TRUNCATE TABLE t;
disconnect dml;

DROP TABLE t;