LPAD in vcol created in ORACLE mode makes table corrupted in non-ORACLE

SET sql_mode='';

CREATE TABLE t (d INT,b VARCHAR(1),c CHAR(1),g CHAR(1) GENERATED ALWAYS AS (SUBSTR(b,0,0)) VIRTUAL,PRIMARY KEY(b),KEY g(g)) ENGINE=InnoDB;

INSERT INTO t VALUES (0);

SET sql_mode='ORACLE';

INSERT INTO t SET c=REPEAT (1,0);

ALTER TABLE t CHANGE COLUMN a b INT;

DELETE FROM t;

SET sql_mode='';

SET GLOBAL table_open_cache=DEFAULT;

INSERT INTO t SET c='0';

2022-02-04 19:16:51 0 [Note] /test/MD290122-mariadb-10.8.1-linux-x86_64-opt/bin/mysqld: ready for connections.

Version: '10.8.1-MariaDB'  socket: '/test/MD290122-mariadb-10.8.1-linux-x86_64-opt/socket.sock'  port: 23542  MariaDB Server

2022-02-04 19:16:56 4 [ERROR] InnoDB: Record in index `g` of table `test`.`t` was not found on update: TUPLE (info_bits=0, 2 fields): {NULL,[0](0x)} at: COMPACT RECORD(info_bits=0, 1 fields): {[8]infimum (0x696E66696D756D00)}

2022-02-04 19:16:56 0x14a4d41c1700  InnoDB: Assertion failure in file /test/10.8_opt/storage/innobase/row/row0ins.cc line 221

InnoDB: Failing assertion: !cursor->index->is_committed()

Core was generated by `/test/MD290122-mariadb-10.8.1-linux-x86_64-opt/bin/mysqld --no-defaults --core-'.

Program terminated with signal SIGABRT, Aborted.

#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50

[Current thread is 1 (Thread 0x14a4d41c1700 (LWP 2318309))]

(gdb) bt

#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50

#1  0x000014a4ea04a859 in __GI_abort () at abort.c:79

#2  0x0000560797ffde61 in ut_dbg_assertion_failed (expr=expr@entry=0x560798c63698 "!cursor->index->is_committed()", file=file@entry=0x560798c631a0 "/test/10.8_opt/storage/innobase/row/row0ins.cc", line=line@entry=221) at /test/10.8_opt/storage/innobase/ut/ut0dbg.cc:60

#3  0x0000560797fef767 in row_ins_sec_index_entry_by_modify (mtr=0x14a4d41bea90, thr=0x14a45003fff8, entry=0x14a45001f480, heap=0x14a4500406a8, offsets_heap=<optimized out>, offsets=0x14a4d41be4b8, cursor=0x14a4d41be520, mode=2, flags=0) at /test/10.8_opt/storage/innobase/row/row0ins.cc:221

#4  row_ins_sec_index_entry_low (flags=<optimized out>, mode=<optimized out>, index=0x14a45001feb0, offsets_heap=<optimized out>, heap=<optimized out>, entry=<optimized out>, trx_id=<optimized out>, thr=<optimized out>) at /test/10.8_opt/storage/innobase/row/row0ins.cc:3117

#5  0x0000560798747e4e in row_ins_sec_index_entry (index=0x14a45001feb0, entry=0x14a45001f480, thr=0x14a45003fff8, check_foreign=<optimized out>) at /test/10.8_opt/storage/innobase/row/row0ins.cc:3331

#6  0x000056079874a413 in row_ins_index_entry (thr=0x14a45003fff8, entry=<optimized out>, index=<optimized out>) at /test/10.8_opt/storage/innobase/row/row0ins.cc:3390

#7  row_ins_index_entry_step (thr=0x14a45003fff8, node=<optimized out>) at /test/10.8_opt/storage/innobase/row/row0ins.cc:3556

#8  row_ins (thr=0x14a45003fff8, node=<optimized out>) at /test/10.8_opt/storage/innobase/row/row0ins.cc:3702

#9  row_ins_step (thr=thr@entry=0x14a45003fff8) at /test/10.8_opt/storage/innobase/row/row0ins.cc:3848

#10 0x000056079875c2e5 in row_insert_for_mysql (mysql_rec=mysql_rec@entry=0x14a4500259a8 <incomplete sequence \371>, prebuilt=0x14a45003f830, ins_mode=ROW_INS_NORMAL) at /test/10.8_opt/storage/innobase/row/row0mysql.cc:1318

#11 0x00005607986a571a in ha_innobase::write_row (this=0x14a450022830, record=0x14a4500259a8 <incomplete sequence \371>) at /test/10.8_opt/storage/innobase/handler/ha_innodb.cc:7777

#12 0x00005607983b8cd0 in handler::ha_write_row (this=0x14a450022830, buf=0x14a4500259a8 <incomplete sequence \371>) at /test/10.8_opt/sql/handler.cc:7519

#13 0x000056079812381d in write_record (thd=thd@entry=0x14a450000c58, table=table@entry=0x56079a535688, info=info@entry=0x14a4d41bfc80, sink=sink@entry=0x0) at /test/10.8_opt/sql/sql_insert.cc:2156

#14 0x000056079812a058 in mysql_insert (thd=thd@entry=0x14a450000c58, table_list=<optimized out>, fields=@0x14a450005d60: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x14a450011240, last = 0x14a450011240, elements = 1}, <No data fields>}, values_list=@0x14a450005da8: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x14a450011090, last = 0x14a450011090, elements = 1}, <No data fields>}, update_fields=@0x14a450005d90: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x5607992d94b0 <end_of_list>, last = 0x14a450005d90, elements = 0}, <No data fields>}, update_values=@0x14a450005d78: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x5607992d94b0 <end_of_list>, last = 0x14a450005d78, elements = 0}, <No data fields>}, duplic=<optimized out>, ignore=<optimized out>, result=<optimized out>) at /test/10.8_opt/sql/sql_insert.cc:1127

#15 0x0000560798164e9f in mysql_execute_command (thd=0x14a450000c58, is_called_from_prepared_stmt=<optimized out>) at /test/10.8_opt/sql/sql_parse.cc:4562

#16 0x00005607981546f6 in mysql_parse (thd=0x14a450000c58, rawbuf=<optimized out>, length=<optimized out>, parser_state=<optimized out>) at /test/10.8_opt/sql/sql_parse.cc:8027

#17 0x00005607981608a5 in dispatch_command (command=COM_QUERY, thd=0x14a450000c58, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>) at /test/10.8_opt/sql/sql_class.h:1362

#18 0x0000560798162a97 in do_command (thd=0x14a450000c58, blocking=blocking@entry=true) at /test/10.8_opt/sql/sql_parse.cc:1402

#19 0x0000560798282247 in do_handle_one_connection (connect=<optimized out>, put_in_cache=true) at /test/10.8_opt/sql/sql_connect.cc:1418

#20 0x000056079828258d in handle_one_connection (arg=arg@entry=0x56079a5122a8) at /test/10.8_opt/sql/sql_connect.cc:1312

#21 0x00005607985f65b8 in pfs_spawn_thread (arg=0x56079a4c98d8) at /test/10.8_opt/storage/perfschema/pfs.cc:2201

#22 0x000014a4ea559609 in start_thread (arg=<optimized out>) at pthread_create.c:477

#23 0x000014a4ea147293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

2022-02-04 19:16:52 0 [Note] /test/MD290122-mariadb-10.8.1-linux-x86_64-dbg/bin/mysqld: ready for connections.

Version: '10.8.1-MariaDB-debug'  socket: '/test/MD290122-mariadb-10.8.1-linux-x86_64-dbg/socket.sock'  port: 38578  MariaDB Server

2022-02-04 19:16:56 4 [ERROR] InnoDB: Record in index `g` of table `test`.`t` was not found on update: TUPLE (info_bits=0, 2 fields): {NULL,[0](0x)} at: COMPACT RECORD(info_bits=0, 1 fields): {[8]infimum (0x696E66696D756D00)}

mysqld: /test/10.8_dbg/storage/innobase/row/row0upd.cc:2050: dberr_t row_upd_sec_index_entry(upd_node_t*, que_thr_t*): Assertion `0' failed.

Core was generated by `/test/MD290122-mariadb-10.8.1-linux-x86_64-dbg/bin/mysqld --no-defaults --core-'.

Program terminated with signal SIGABRT, Aborted.

#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50

[Current thread is 1 (Thread 0x14a6cc14c700 (LWP 2318883))]

(gdb) bt

#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50

#1  0x000014a6d4faf859 in __GI_abort () at abort.c:79

#2  0x000014a6d4faf729 in __assert_fail_base (fmt=0x14a6d5145588 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x55c003cf64f7 "0", file=0x55c003de5138 "/test/10.8_dbg/storage/innobase/row/row0upd.cc", line=2050, function=<optimized out>) at assert.c:92

#3  0x000014a6d4fc0f36 in __GI___assert_fail (assertion=assertion@entry=0x55c003cf64f7 "0", file=file@entry=0x55c003de5138 "/test/10.8_dbg/storage/innobase/row/row0upd.cc", line=line@entry=2050, function=function@entry=0x55c003de6510 "dberr_t row_upd_sec_index_entry(upd_node_t*, que_thr_t*)") at assert.c:101

#4  0x000055c00371361b in row_upd_sec_index_entry (node=node@entry=0x14a654020c48, thr=thr@entry=0x14a654020fa0) at /test/10.8_dbg/storage/innobase/row/row0upd.cc:2050

#5  0x000055c0037143f3 in row_upd_sec_step (thr=0x14a654020fa0, node=0x14a654020c48) at /test/10.8_dbg/storage/innobase/row/row0upd.cc:2199

#6  row_upd (thr=0x14a654020fa0, node=0x14a654020c48) at /test/10.8_dbg/storage/innobase/row/row0upd.cc:2935

#7  row_upd_step (thr=thr@entry=0x14a654020fa0) at /test/10.8_dbg/storage/innobase/row/row0upd.cc:3050

#8  0x000055c0036bb079 in row_update_for_mysql (prebuilt=0x14a654020488) at /test/10.8_dbg/storage/innobase/row/row0mysql.cc:1700

#9  0x000055c003525a66 in ha_innobase::delete_row (this=0x14a65402d070, record=0x14a654072d28 <incomplete sequence \375>) at /test/10.8_dbg/storage/innobase/handler/ha_innodb.cc:8650

#10 0x000055c0031843da in handler::ha_delete_row (this=0x14a65402d070, buf=0x14a654072d28 <incomplete sequence \375>) at /test/10.8_dbg/sql/handler.cc:7651

#11 0x000055c002e0d59d in TABLE::delete_row (this=0x14a6540728d8) at /test/10.8_dbg/sql/sql_delete.cc:281

#12 0x000055c002e0b58b in mysql_delete (thd=thd@entry=0x14a654000db8, table_list=0x14a654013ea0, conds=<optimized out>, order_list=order_list@entry=0x14a654005ca8, limit=18446744073709551615, options=<optimized out>, result=<optimized out>) at /test/10.8_dbg/sql/sql_delete.cc:833

#13 0x000055c002e6df09 in mysql_execute_command (thd=thd@entry=0x14a654000db8, is_called_from_prepared_stmt=is_called_from_prepared_stmt@entry=false) at /test/10.8_dbg/sql/sql_limit.h:85

#14 0x000055c002e57db7 in mysql_parse (thd=thd@entry=0x14a654000db8, rawbuf=<optimized out>, length=<optimized out>, parser_state=parser_state@entry=0x14a6cc14b400) at /test/10.8_dbg/sql/sql_parse.cc:8027

#15 0x000055c002e66a53 in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x14a654000db8, packet=packet@entry=0x14a65400b889 "DELETE FROM t", packet_length=packet_length@entry=13, blocking=blocking@entry=true) at /test/10.8_dbg/sql/sql_class.h:1362

#16 0x000055c002e69e9a in do_command (thd=0x14a654000db8, blocking=blocking@entry=true) at /test/10.8_dbg/sql/sql_parse.cc:1402

#17 0x000055c002fe5110 in do_handle_one_connection (connect=<optimized out>, connect@entry=0x55c0067051a8, put_in_cache=put_in_cache@entry=true) at /test/10.8_dbg/sql/sql_connect.cc:1418

#18 0x000055c002fe5715 in handle_one_connection (arg=arg@entry=0x55c0067051a8) at /test/10.8_dbg/sql/sql_connect.cc:1312

#19 0x000055c00346ec8e in pfs_spawn_thread (arg=0x55c006619328) at /test/10.8_dbg/storage/perfschema/pfs.cc:2201

#20 0x000014a6d54be609 in start_thread (arg=<optimized out>) at pthread_create.c:477

#21 0x000014a6d50ac293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95