--source include/have_innodb.inc

CREATE TABLE `allele` (

  `pkey` int(11) NOT NULL AUTO_INCREMENT,

  `person` varchar(30) DEFAULT substring_index(user(),'@',1),

  PRIMARY KEY (`pkey`)) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=latin1;

LOCK TABLES `allele` WRITE;

INSERT INTO `allele` VALUES (1,null);

UNLOCK TABLES;

==27447==ERROR: AddressSanitizer: use-after-poison on address 0x62b000000ef0 at pc 0x000000717a8e bp 0x7f6498b1a230 sp 0x7f6498b1a220

READ of size 8 at 0x62b000000ef0 thread T27

    #0 0x717a8d in Item_args::walk_args(bool (Item::*)(void*), bool, void*) /10.2/sql/item.h:4026

    #1 0x718558 in Item_func_or_sum::walk(bool (Item::*)(void*), bool, void*) /10.2/sql/item.h:4311

    #2 0xa81b06 in fix_session_vcol_expr(THD*, Virtual_column_info*) /10.2/sql/table.cc:2796

    #3 0x6fe1e6 in fix_all_session_vcol_exprs /10.2/sql/sql_base.cc:4952

    #4 0x6ff1fb in lock_tables(THD*, TABLE_LIST*, unsigned int, unsigned int) /10.2/sql/sql_base.cc:5130

    #5 0x6fd415 in open_and_lock_tables(THD*, DDL_options_st const&, TABLE_LIST*, bool, unsigned int, Prelocking_strategy*) /10.2/sql/sql_base.cc:4819

    #6 0x6dea66 in open_and_lock_tables(THD*, TABLE_LIST*, bool, unsigned int) /10.2/sql/sql_base.h:509

    #7 0x7a51d6 in mysql_insert(THD*, TABLE_LIST*, List<Item>&, List<List<Item> >&, List<Item>&, List<Item>&, enum_duplicates, bool) /10.2/sql/sql_insert.cc:758

    #8 0x8066e7 in mysql_execute_command(THD*) /10.2/sql/sql_parse.cc:4169

    #9 0x81d564 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /10.2/sql/sql_parse.cc:7754

    #10 0x7f9e38 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /10.2/sql/sql_parse.cc:1833

    #11 0x7f6f2e in do_command(THD*) /10.2/sql/sql_parse.cc:1387

    #12 0xb2d0b3 in do_handle_one_connection(CONNECT*) /10.2/sql/sql_connect.cc:1335

    #13 0xb2caac in handle_one_connection /10.2/sql/sql_connect.cc:1241

    #14 0x1d14b45 in pfs_spawn_thread /10.2/storage/perfschema/pfs.cc:1862

    #15 0x7f64b00bc6b9 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x76b9)

    #16 0x7f64af55141c in clone (/lib/x86_64-linux-gnu/libc.so.6+0x10741c)