InnoDB: Assertion failure in row_merge_read_clustered_index upon ALTER on table with indexed virtual columns

--source include/have_innodb.inc

--source include/have_sequence.inc

CREATE TABLE t1 (

  id BIGINT AUTO_INCREMENT PRIMARY KEY,

  a INT,

  va INT ZEROFILL AS (a) VIRTUAL,

  b TIMESTAMP,

  c CHAR(204),

  vc CHAR(8),

  KEY(vc,c(64),b,va)

) ENGINE=InnoDB CHARACTER SET utf32;

INSERT INTO t1 (id) SELECT NULL FROM seq_1_to_75;

INSERT IGNORE INTO t1 (id, a) VALUES (NULL, -1);

ALTER TABLE t1 FORCE;

# CLeanup

DROP TABLE t1;

2021-06-08 02:36:35 0x7f3bf5354700  InnoDB: Assertion failure in file /data/src/10.3/storage/innobase/row/row0merge.cc line 2697

#6  0x000055839690fa33 in ut_dbg_assertion_failed (expr=0x0, file=0x558396fc16f0 "/data/src/10.3/storage/innobase/row/row0merge.cc", line=2697) at /data/src/10.3/storage/innobase/ut/ut0dbg.cc:60

#7  0x000055839680b6b8 in row_merge_read_clustered_index (trx=0x7f3bf5e520d0, table=0x7f3b9c0abb60, old_table=0x7f3b9c1901c0, new_table=0x7f3b9c0af1c0, online=false, index=0x7f3b9c0aeef0, fts_sort_idx=0x0, psort_info=0x0, files=0x7f3b9c033340, key_numbers=0x7f3b9c0aef00, n_index=2, defaults=0x0, add_v=0x0, col_map=0x7f3b9c0aef98, add_autoinc=18446744073709551615, sequence=..., block=0x7f3bf52da000 "\002\a`\276\255\203\200", skip_pk_sort=true, tmpfd=0x7f3bf53504e0, stage=0x7f3b9c1805d0, pct_cost=33.333333333333336, crypt_block=0x0, eval_table=0x7f3b9c0abb60, allow_not_null=false) at /data/src/10.3/storage/innobase/row/row0merge.cc:2697

#8  0x0000558396812361 in row_merge_build_indexes (trx=0x7f3bf5e520d0, old_table=0x7f3b9c1901c0, new_table=0x7f3b9c0af1c0, online=false, indexes=0x7f3b9c0aeef0, key_numbers=0x7f3b9c0aef00, n_indexes=2, table=0x7f3b9c0abb60, defaults=0x0, col_map=0x7f3b9c0aef98, add_autoinc=18446744073709551615, sequence=..., skip_pk_sort=true, stage=0x7f3b9c1805d0, add_v=0x0, eval_table=0x7f3b9c0abb60, allow_not_null=false) at /data/src/10.3/storage/innobase/row/row0merge.cc:4721

#9  0x00005583966ced27 in ha_innobase::inplace_alter_table (this=0x7f3b9c036398, altered_table=0x7f3b9c0abb60, ha_alter_info=0x7f3bf5351170) at /data/src/10.3/storage/innobase/handler/handler0alter.cc:7221

#10 0x00005583962084d7 in handler::ha_inplace_alter_table (this=0x7f3b9c036398, altered_table=0x7f3b9c0abb60, ha_alter_info=0x7f3bf5351170) at /data/src/10.3/sql/handler.h:4212

#11 0x00005583961fc782 in mysql_inplace_alter_table (thd=0x7f3b9c000d90, table_list=0x7f3b9c012bb8, table=0x7f3b9c0bbc10, altered_table=0x7f3b9c0abb60, ha_alter_info=0x7f3bf5351170, target_mdl_request=0x7f3bf53512f0, alter_ctx=0x7f3bf53518a0) at /data/src/10.3/sql/sql_table.cc:7744

#12 0x000055839620353f in mysql_alter_table (thd=0x7f3b9c000d90, new_db=0x7f3b9c005488, new_name=0x7f3b9c005870, create_info=0x7f3bf5352490, table_list=0x7f3b9c012bb8, alter_info=0x7f3bf53523d0, order_num=0, order=0x0, ignore=false) at /data/src/10.3/sql/sql_table.cc:10049

#13 0x0000558396294416 in Sql_cmd_alter_table::execute (this=0x7f3b9c013220, thd=0x7f3b9c000d90) at /data/src/10.3/sql/sql_alter.cc:512

#14 0x000055839611dc3f in mysql_execute_command (thd=0x7f3b9c000d90) at /data/src/10.3/sql/sql_parse.cc:6075

#15 0x00005583961232fe in mysql_parse (thd=0x7f3b9c000d90, rawbuf=0x7f3b9c012ae8 "ALTER TABLE t1 FORCE", length=20, parser_state=0x7f3bf5353530, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:7870

#16 0x000055839610f9bb in dispatch_command (command=COM_QUERY, thd=0x7f3b9c000d90, packet=0x7f3b9c008f41 "ALTER TABLE t1 FORCE", packet_length=20, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:1852

#17 0x000055839610e35b in do_command (thd=0x7f3b9c000d90) at /data/src/10.3/sql/sql_parse.cc:1398

#18 0x000055839628e2ac in do_handle_one_connection (connect=0x55839a0cd420) at /data/src/10.3/sql/sql_connect.cc:1403

#19 0x000055839628e008 in handle_one_connection (arg=0x55839a0cd420) at /data/src/10.3/sql/sql_connect.cc:1308

#20 0x0000558396c63f69 in pfs_spawn_thread (arg=0x55839a0b0260) at /data/src/10.3/storage/perfschema/pfs.cc:1869

#21 0x00007f3bfc4a7609 in start_thread (arg=<optimized out>) at pthread_create.c:477

#22 0x00007f3bfc3ce293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95