--source include/have_utf32.inc

--echo #
--echo # MDEV-27966 Assertion `fixed()' failed and Assertion `fixed == 1' failed, both in Item_func_concat::val_str on SELECT after INSERT with collation utf32_bin on utf8_bin table
--echo #

SET NAMES utf8mb3;
SET sql_mode='';
CREATE TABLE t (c1 INT,c2 CHAR AS (CONCAT ('',DAYNAME ('')))) COLLATE utf8_bin ENGINE=InnoDB;
INSERT INTO t VALUES (0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0);
SET collation_connection='utf32_bin';
--error ER_CANT_AGGREGATE_2COLLATIONS
INSERT INTO t VALUES (0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0);
--error ER_CANT_AGGREGATE_2COLLATIONS
SELECT * FROM t;
DROP TABLE t;
SET sql_mode=DEFAULT;
SET NAMES utf8mb3;