Segfault in Field::register_field_in_read_map upon INSERT DELAYED with virtual columns

CREATE TABLE t (

  id INT AUTO_INCREMENT,

  a varchar(16) NOT NULL DEFAULT '',

  b varchar(16) GENERATED ALWAYS AS (a) VIRTUAL,

  KEY `col_year` (b(8),id)

) ENGINE=MyISAM;

INSERT DELAYED INTO t (a) VALUES ('foo'),('bar');

# Cleanup

DROP TABLE t;

#3  <signal handler called>

#4  0x0000565526134adc in Field::register_field_in_read_map (this=0x7f9b50017498) at /data/src/10.5/sql/field.cc:11277

#5  0x0000565525f34fb7 in do_mark_index_columns (table=0x7f9b50016c80, index=0, bitmap=0x7f9b50016db0, read=true) at /data/src/10.5/sql/table.cc:7204

#6  0x0000565525f3f39a in TABLE::mark_index_columns_for_read (this=0x7f9b50016c80, index=0) at /data/src/10.5/sql/table.cc:7224

#7  0x0000565525f35168 in TABLE::mark_auto_increment_column (this=0x7f9b50016c80) at /data/src/10.5/sql/table.cc:7245

#8  0x0000565525f357c6 in TABLE::mark_columns_needed_for_insert (this=0x7f9b50016c80) at /data/src/10.5/sql/table.cc:7442

#9  0x0000565525d8db39 in mysql_insert (thd=0x7f9b50000db8, table_list=0x7f9b50015408, fields=..., values_list=..., update_fields=..., update_values=..., duplic=DUP_ERROR, ignore=false, result=0x0) at /data/src/10.5/sql/sql_insert.cc:945

#10 0x0000565525de23af in mysql_execute_command (thd=0x7f9b50000db8) at /data/src/10.5/sql/sql_parse.cc:4624

#11 0x0000565525dedeaa in mysql_parse (thd=0x7f9b50000db8, rawbuf=0x7f9b50015300 "INSERT DELAYED INTO t (a) VALUES ('foo'),('bar')", length=48, parser_state=0x7f9b6078d490, is_com_multi=false, is_next_command=false) at /data/src/10.5/sql/sql_parse.cc:8100

#12 0x0000565525dd9e1d in dispatch_command (command=COM_QUERY, thd=0x7f9b50000db8, packet=0x7f9b5000b5b9 "INSERT DELAYED INTO t (a) VALUES ('foo'),('bar')", packet_length=48, is_com_multi=false, is_next_command=false) at /data/src/10.5/sql/sql_parse.cc:1891

#13 0x0000565525dd860f in do_command (thd=0x7f9b50000db8) at /data/src/10.5/sql/sql_parse.cc:1370

#14 0x0000565525f89b84 in do_handle_one_connection (connect=0x5655290f6168, put_in_cache=true) at /data/src/10.5/sql/sql_connect.cc:1418

#15 0x0000565525f89837 in handle_one_connection (arg=0x565528ffcd78) at /data/src/10.5/sql/sql_connect.cc:1312

#16 0x00005655264afb19 in pfs_spawn_thread (arg=0x5655290f5b38) at /data/src/10.5/storage/perfschema/pfs.cc:2201

#17 0x00007f9b66437609 in start_thread (arg=<optimized out>) at pthread_create.c:477

#18 0x00007f9b6600a293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95