[bb-10.2-monty] Server crashes in in Field::register_field_in_read_map

CREATE TABLE t1 ( 

 pk BIGINT,

 c CHAR(64) NOT NULL DEFAULT '',

 vc CHAR(64) AS (c) VIRTUAL,

 PRIMARY KEY(pk),

 INDEX(vc(32))

);

DELETE FROM t1 WHERE vc IS NULL ORDER BY pk;

#3  <signal handler called>

#4  0x00007f8c27b7fd9e in Field::register_field_in_read_map (this=0x7f8c1c0281f8) at /data/src/bb-10.2-monty/sql/field.cc:10874

#5  0x00007f8c27ced148 in QUICK_RANGE_SELECT::add_used_key_part_to_set (this=0x7f8c1c101140) at /data/src/bb-10.2-monty/sql/opt_range.cc:11861

#6  0x00007f8c27b8b366 in find_all_keys (thd=0x7f8c1c016070, param=0x7f8c28a545a0, select=0x7f8c1c064d30, fs_info=0x7f8c1c29d200, buffpek_pointers=0x7f8c28a547b0, tempfile=0x7f8c28a54630, pq=0x0, found_rows=0x7f8c1c29d3f0) at /data/src/bb-10.2-monty/sql/filesort.cc:764

#7  0x00007f8c27b89b97 in filesort (thd=0x7f8c1c016070, table=0x7f8c1c0d7870, filesort=0x7f8c28a54a50, tracker=0x7f8c1c065198, join=0x0, first_table_bit=0) at /data/src/bb-10.2-monty/sql/filesort.cc:284

#8  0x00007f8c27d24aff in mysql_delete (thd=0x7f8c1c016070, table_list=0x7f8c1c064190, conds=0x7f8c1c0648a0, order_list=0x7f8c1c01a4a8, limit=18446744073709551615, options=0, result=0x0) at /data/src/bb-10.2-monty/sql/sql_delete.cc:503

#9  0x00007f8c2792bf63 in mysql_execute_command (thd=0x7f8c1c016070) at /data/src/bb-10.2-monty/sql/sql_parse.cc:4566

#10 0x00007f8c27936888 in mysql_parse (thd=0x7f8c1c016070, rawbuf=0x7f8c1c064088 "DELETE FROM t1 WHERE vc IS NULL ORDER BY pk", length=43, parser_state=0x7f8c28a55dd0, is_com_multi=false, is_next_command=false) at /data/src/bb-10.2-monty/sql/sql_parse.cc:7839

#11 0x00007f8c2792444e in dispatch_command (command=COM_QUERY, thd=0x7f8c1c016070, packet=0x7f8c1c058071 "DELETE FROM t1 WHERE vc IS NULL ORDER BY pk", packet_length=43, is_com_multi=false, is_next_command=false) at /data/src/bb-10.2-monty/sql/sql_parse.cc:1799

#12 0x00007f8c27922e28 in do_command (thd=0x7f8c1c016070) at /data/src/bb-10.2-monty/sql/sql_parse.cc:1359

#13 0x00007f8c27a6ac46 in do_handle_one_connection (connect=0x7f8c244744f0) at /data/src/bb-10.2-monty/sql/sql_connect.cc:1354

#14 0x00007f8c27a6a9d3 in handle_one_connection (arg=0x7f8c244744f0) at /data/src/bb-10.2-monty/sql/sql_connect.cc:1260

#15 0x00007f8c27da9582 in pfs_spawn_thread (arg=0x7f8c2440f9f0) at /data/src/bb-10.2-monty/storage/perfschema/pfs.cc:1862

#16 0x00007f8c26f570a4 in start_thread (arg=0x7f8c28a57300) at pthread_create.c:309

#17 0x00007f8c24f0487d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111