main.execution_constants fails with UBSAN

main.execution_constants                 [ fail ]

        Test ended at 2025-09-16 20:38:09

CURRENT_TEST: main.execution_constants

mysqltest: At line 76: query '$query_head 0 $query_tail' failed with wrong errno ER_PARSE_ERROR (1064): 'memory exhausted near '110609198224, 98224,  0 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) )...' at line 1', instead of  (0)...

The result from queries just before the failure was:

CREATE TABLE `t_bug21476` (

`ID_BOARD` smallint(5) unsigned NOT NULL default '0',

`ID_MEMBER` mediumint(8) unsigned NOT NULL default '0',

`logTime` int(10) unsigned NOT NULL default '0',

`ID_MSG` mediumint(8) unsigned NOT NULL default '0',

PRIMARY KEY  (`ID_MEMBER`,`ID_BOARD`),

KEY `logTime` (`logTime`)

) ENGINE=MyISAM DEFAULT CHARSET=cp1251 COLLATE=cp1251_bulgarian_ci;

INSERT INTO `t_bug21476` VALUES (2,2,1154870939,0),(1,2,1154870957,0),(2,183,1154941362,0),(2,84,1154904301,0),(1,84,1154905867,0),(2,13,1154947484,10271),(3,84,1154880549,0),(1,6,1154892183,0),(2,25,1154947581,10271),(3,25,1154904760,0),(1,25,1154947373,10271),(1,179,1154899992,0),(2,179,1154899410,0),(5,25,1154901666,0),(2,329,1154902026,0),(3,329,1154902040,0),(1,329,1154902058,0),(1,13,1154930841,0),(3,85,1154904987,0),(1,183,1154929665,0),(3,13,1154931268,0),(1,85,1154936888,0),(1,169,1154937959,0),(2,169,1154941717,0),(3,183,1154939810,0),(3,169,1154941734,0);