bug: `arg_min_distinct` function with the value type is bitmap or variant cause segmentation fault

[b41sh]

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• [X] I had searched in the issues and found no similar issues.

Version

v1.2.314-nightly

What's Wrong?

arg_min_distinct function with the value type is bitmap or variant cause segmentation fault

How to Reproduce?

mysql> create table test(a int not null, b bitmap not null, c variant not null);
Query OK, 0 rows affected (0.12 sec)

mysql> insert into test values(-370, '97,402,7675,962', 'true'),(565,'656,287,770,4147', 'false');
Query OK, 2 rows affected (0.06 sec)

mysql> SELECT arg_min_distinct(a, b), a FROM test GROUP BY a;
ERROR 2013 (HY000): Lost connection to MySQL server during query

mysql> SELECT arg_min_distinct(a, c), a FROM test GROUP BY a;
ERROR 2013 (HY000): Lost connection to MySQL server during query

Are you willing to submit PR?

• [ ] Yes I am willing to submit a PR!