crash with firstvalue()/over()

Version: '11.0.0-preview-MariaDB'  socket: '/tmp/mysql.sock'  port: 3306  MariaDB Server

Thread 18 "mysqld" received signal SIGSEGV, Segmentation fault.

(gdb) bt

#0  in Item::save_real_in_field at ./sql/item.cc:6834

#1  in Item::save_in_field at ./sql/item.cc:6866

#2  in save_window_function_values at ./sql/sql_window.cc:2775

#3  in compute_window_func at ./sql/sql_window.cc:2927

#4  in Window_func_runner::exec at ./sql/sql_window.cc:3042

#5  in Window_funcs_sort::exec at ./sql/sql_window.cc:3067

#6  in Window_funcs_computation::exec at ./sql/sql_window.cc:3196

#7  in AGGR_OP::end_send at ./sql/sql_select.cc:31045

#8  in sub_select_postjoin_aggr at ./sql/sql_select.cc:22319

#9  in do_select at ./sql/sql_select.cc:22156

#10 in JOIN::exec_inner at ./sql/sql_select.cc:4866

#11 in JOIN::exec at ./sql/sql_select.cc:4644

#12 in mysql_select at ./sql/sql_select.cc:5124

#13 in handle_select at ./sql/sql_select.cc:620

#14 in execute_sqlcom_select at ./sql/sql_parse.cc:6265

#15 in mysql_execute_command at ./sql/sql_parse.cc:3949

#16 in mysql_parse at ./sql/sql_parse.cc:8000

#17 in dispatch_command at ./sql/sql_parse.cc:1894

#18 in do_command at ./sql/sql_parse.cc:1408

#19 in do_handle_one_connection at ./sql/sql_connect.cc:1416

#20 in handle_one_connection at ./sql/sql_connect.cc:1318

drop table if exists t;

create table t (

  c0 tinyint not null,

  c1 double not null,

  primary key (c1,c0)

);

insert into t values(1,2),(3,4);

select 

(

 inet6_aton(@c)

 between

 decode(last_insert_id(),charset(first_value(c1) over()))

 and

 utc_date

),c0

from t;