Incorrect Join Execution When Controlling Join Buffer Size

CREATE TABLE `t1` (

  `c0` int(10) unsigned NOT NULL,

  PRIMARY KEY (`c0`),

  KEY `ic3` (`c0`) USING BTREE

);

INSERT INTO `t1` VALUES (1332945389);

CREATE TABLE `t2` (

  `c0` int(10) unsigned NOT NULL,

  PRIMARY KEY (`c0`)

);

INSERT INTO `t2` VALUES (1180244875), (1951338178);

mysql> SET SESSION join_buffer_size = 5250229460064350213;

Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> SET SESSION join_cache_level = 4;

Query OK, 0 rows affected (0.00 sec)

mysql> SELECT t2.c0 FROM t2  LEFT OUTER JOIN t1 ON t1.c0 = t2.c0  WHERE t1.c0;

Empty set (0.00 sec)

mysql> SET optimizer_switch='optimize_join_buffer_size=off';

Query OK, 0 rows affected (0.00 sec)

mysql> SELECT t2.c0 FROM t2  LEFT OUTER JOIN t1 ON t1.c0 = t2.c0  WHERE t1.c0;

+------------+

| c0         |

+------------+

| 1180244875 |

| 1951338178 |

+------------+

2 rows in set (0.00 sec)