virtual enum_alter_inplace_result ha_innobase::check_if_supported_inplace_alter(TABLE*, Alter_inplace_info*): Assertion `((((*af)->unireg_check) & 127U) == Field::NEXT_NUMBER) == (((f->unireg_check) & 127U) == Field::NEXT_NUMBER)' failed.

Problem found during RQG testing

mysqld: storage/innobase/handler/handler0alter.cc:2289: virtual enum_alter_inplace_result ha_innobase::check_if_supported_inplace_alter(TABLE*, Alter_inplace_info*): Assertion `((((*af)->unireg_check) & 127U) == Field::NEXT_NUMBER) == (((f->unireg_check) & 127U) == Field::NEXT_NUMBER)' failed.

190417 16:04:44 [ERROR] mysqld got signal 6 ;

...

Query (0x7f8020013450): ALTER TABLE t4 MODIFY COLUMN col_int INTEGER NOT NULL, ALGORITHM = NOCOPY, LOCK = NONE  /* E_R Thread5 QNO 3766 CON_ID 272 */

Connection ID (thread ID): 272

Status: NOT_KILLED

#3  <signal handler called>

#4  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58

#5  0x00007f80d5dae37a in __GI_abort () at abort.c:89

#6  0x00007f80d5da4b47 in __assert_fail_base (fmt=<optimized out>, assertion=assertion@entry=0x5594655f9548 "((((*af)->unireg_check) & 127U) == Field::NEXT_NUMBER) == (((f->unireg_check) & 127U) == Field::NEXT_NUMBER)", file=file@entry=0x5594655f8268 "storage/innobase/handler/handler0alter.cc", line=line@entry=2289, function=function@entry=0x5594655fe620 <ha_innobase::check_if_supported_inplace_alter(TABLE*, Alter_inplace_info*)::__PRETTY_FUNCTION__> "virtual enum_alter_inplace_result ha_innobase::check_if_supported_inplace_alter(TABLE*, Alter_inplace_info*)") at assert.c:92

#7  0x00007f80d5da4bf2 in __GI___assert_fail (assertion=0x5594655f9548 "((((*af)->unireg_check) & 127U) == Field::NEXT_NUMBER) == (((f->unireg_check) & 127U) == Field::NEXT_NUMBER)", file=0x5594655f8268 "storage/innobase/handler/handler0alter.cc", line=2289, function=0x5594655fe620 <ha_innobase::check_if_supported_inplace_alter(TABLE*, Alter_inplace_info*)::__PRETTY_FUNCTION__> "virtual enum_alter_inplace_result ha_innobase::check_if_supported_inplace_alter(TABLE*, Alter_inplace_info*)") at assert.c:101

#8  0x0000559464d5110b in ha_innobase::check_if_supported_inplace_alter (this=0x7f80284b4e90, altered_table=0x7f80b831c6e0, ha_alter_info=0x7f80b831c650) at storage/innobase/handler/handler0alter.cc:2289

#9  0x00005594648a3828 in mysql_alter_table (thd=0x7f8020000a98, new_db=0x7f8020005240, new_name=0x7f8020005648, create_info=0x7f80b831ed40, table_list=0x7f80200135f8, alter_info=0x7f80b831ec80, order_num=0, order=0x0, ignore=false) at sql/sql_table.cc:9939

#10 0x00005594649341b3 in Sql_cmd_alter_table::execute (this=0x7f8020013dd8, thd=0x7f8020000a98) at sql/sql_alter.cc:496

#11 0x00005594647c4788 in mysql_execute_command (thd=0x7f8020000a98) at sql/sql_parse.cc:6344

10.4 ee4a2fef18136165a3267b4429e5921fc306cc20 2019-04-17

#12 0x00005594647c9a47 in mysql_parse (thd=0x7f8020000a98, rawbuf=0x7f8020013450 "ALTER TABLE t4 MODIFY COLUMN col_int INTEGER NOT NULL, ALGORITHM = NOCOPY, LOCK = NONE  /* E_R Thread5 QNO 3766 CON_ID 272 */", length=125, parser_state=0x7f80b83201d0, is_com_multi=false, is_next_command=false) at sql/sql_parse.cc:8154

#13 0x00005594647b5122 in dispatch_command (command=COM_QUERY, thd=0x7f8020000a98, packet=0x7f802000a059 " ALTER TABLE t4 MODIFY COLUMN col_int INTEGER NOT NULL, ALGORITHM = NOCOPY, LOCK = NONE  /* E_R Thread5 QNO 3766 CON_ID 272 */ ", packet_length=127, is_com_multi=false, is_next_command=false) at sql/sql_parse.cc:1832

#14 0x00005594647b38e2 in do_command (thd=0x7f8020000a98) at sql/sql_parse.cc:1365

#15 0x000055946492b133 in do_handle_one_connection (connect=0x55946933c178) at sql/sql_connect.cc:1398

#16 0x000055946492ae97 in handle_one_connection (arg=0x55946933c178) at sql/sql_connect.cc:1301

#17 0x00007f80d6bf16da in start_thread (arg=0x7f80b8321700) at pthread_create.c:456

#18 0x00007f80d5e7fd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

No replay of the problem on

10.3.15 commit  a2335b791aa06fbf4b784486ed9d34ba75af9d51 2019-04-15