using DATETIME(6) as row_start/row_end crashes server

create table t (

  a int,

  row_start datetime(6) generated always as row start,

  row_end datetime(6) generated always as row end,

  period for system_time(row_start, row_end)

) with system versioning;

insert into t (a) values (1);

drop table t;

#8  Field::set_max (this=0x7f92e00fb750) at field.h:654

#9  TABLE::vers_update_fields (this=0x7f92e0036058) at table.cc:7926

#10 fill_record (thd=0x7f92e0000cf8, table_arg=0x7f92e0036058, fields=class List<Item> with 1 elements, values=class List<Item> with 1 elements, ignore_errors=false, update=false) at sql_base.cc:8322

#11 fill_record_n_invoke_before_triggers (thd=0x7f92e0000cf8, table=0x7f92e0036058, fields=class List<Item> with 1 elements, values=class List<Item> with 1 elements, ignore_errors=false, event=TRG_EVENT_INSERT) at sql_base.cc:8449

#12 mysql_insert (thd=0x7f92e0000cf8, table_list=0x7f92e0013ee8, fields=class List<Item> with 1 elements, values_list=..., update_fields=class List<Item> with 0 elements, update_values=class List<Item> with 0 elements, duplic=DUP_ERROR, ignore=false) at sql_insert.cc:960

#13 mysql_execute_command (thd=0x7f92e0000cf8) at sql_parse.cc:4728

#14 mysql_parse (thd=0x7f92e0000cf8, rawbuf=0x7f92e0013e00 "insert into t (a) values (1)", length=28, parser_state=0x7f9335fb9560, is_com_multi=false, is_next_command=false) at sql_parse.cc:8095