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  1. MariaDB Server
  2. MDEV-16501

[10.1] InnoDB: Failing assertion: !strcmp(from, s) in dict0mem.cc upon ALTER TABLE with virtual column

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      --source include/have_innodb.inc
      CREATE TABLE t1 (a INT, va INT AS (a), b INT) ENGINE=InnoDB;
      ALTER TABLE t1 CHANGE COLUMN b c INT;
       
      # Cleanup
      DROP TABLE t1;
      

      10.1 c22ab56f0d6

      2018-06-16 00:17:05 7fba78886b00  InnoDB: Assertion failure in thread 140438862850816 in file dict0mem.cc line 503
      InnoDB: Failing assertion: !strcmp(from, s)
       
      #5  0x00007fba7681a3fa in abort () from /lib/x86_64-linux-gnu/libc.so.6
      #6  0x00007fba6fa77b43 in dict_mem_table_col_rename (table=0x7fba605810f8, nth_col=2, from=0x7fba6cf2df16 "b", to=0x7fba60443780 "c") at /data/src/10.1/storage/innobase/dict/dict0mem.cc:503
      #7  0x00007fba6fb19d79 in innobase_rename_columns_cache (ha_alter_info=0x7fba78882b00, table=0x7fba60481c70, user_table=0x7fba605810f8) at /data/src/10.1/storage/innobase/handler/handler0alter.cc:4870
      #8  0x00007fba6fb1c0a5 in ha_innodb::commit_inplace_alter_table (this=0x7fba604b0888, altered_table=0x7fba6068f070, ha_alter_info=0x7fba78882b00, commit=true) at /data/src/10.1/storage/innobase/handler/handler0alter.cc:6166
      #9  0x00005580582a86eb in handler::ha_commit_inplace_alter_table (this=0x7fba604b0888, altered_table=0x7fba6068f070, ha_alter_info=0x7fba78882b00, commit=true) at /data/src/10.1/sql/handler.cc:4225
      #10 0x000055805812524c in mysql_inplace_alter_table (thd=0x7fba6cfc7070, table_list=0x7fba60443180, table=0x7fba60481c70, altered_table=0x7fba6068f070, ha_alter_info=0x7fba78882b00, inplace_supported=HA_ALTER_INPLACE_NO_LOCK_AFTER_PREPARE, target_mdl_request=0x7fba78882b70, alter_ctx=0x7fba78883710) at /data/src/10.1/sql/sql_table.cc:7222
      #11 0x0000558058129bbc in mysql_alter_table (thd=0x7fba6cfc7070, new_db=0x7fba60443770 "test", new_name=0x0, create_info=0x7fba78884300, table_list=0x7fba60443180, alter_info=0x7fba78884270, order_num=0, order=0x0, ignore=false) at /data/src/10.1/sql/sql_table.cc:9048
      #12 0x000055805819ae35 in Sql_cmd_alter_table::execute (this=0x7fba60443868, thd=0x7fba6cfc7070) at /data/src/10.1/sql/sql_alter.cc:325
      #13 0x000055805806a531 in mysql_execute_command (thd=0x7fba6cfc7070) at /data/src/10.1/sql/sql_parse.cc:5696
      #14 0x000055805806ecbb in mysql_parse (thd=0x7fba6cfc7070, rawbuf=0x7fba60443088 "ALTER TABLE t1 CHANGE COLUMN b c INT", length=36, parser_state=0x7fba788855e0) at /data/src/10.1/sql/sql_parse.cc:7449
      #15 0x000055805805d6f5 in dispatch_command (command=COM_QUERY, thd=0x7fba6cfc7070, packet=0x7fba6eec3071 "ALTER TABLE t1 CHANGE COLUMN b c INT", packet_length=36) at /data/src/10.1/sql/sql_parse.cc:1492
      #16 0x000055805805c47a in do_command (thd=0x7fba6cfc7070) at /data/src/10.1/sql/sql_parse.cc:1121
      #17 0x00005580581963c7 in do_handle_one_connection (thd_arg=0x7fba6cfc7070) at /data/src/10.1/sql/sql_connect.cc:1330
      #18 0x000055805819612b in handle_one_connection (arg=0x7fba6cfc7070) at /data/src/10.1/sql/sql_connect.cc:1242
      #19 0x0000558058552af0 in pfs_spawn_thread (arg=0x7fba713f2670) at /data/src/10.1/storage/perfschema/pfs.cc:1861
      #20 0x00007fba78515494 in start_thread (arg=0x7fba78886b00) at pthread_create.c:333
      #21 0x00007fba768ce93f in clone () from /lib/x86_64-linux-gnu/libc.so.6
      

      No crash on 10.2.
      No visible problems on a non-debug build.

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              Assignee:
              nikitamalyavin Nikita Malyavin
              Reporter:
              elenst Elena Stepanova
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