Server crashes in mysql_alter_table with ALTER ONLINE and sql_mode='NO_ZERO_DATE'

set sql_mode='NO_ZERO_DATE';

create table t1 (i int) engine=myisam;

alter online table t1 add (d1 date not null);

==25279==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x55b7c917f8c2 bp 0x7f9dc1110ca0 sp 0x7f9dc110f330 T27)

    #0 0x55b7c917f8c1 in mysql_alter_table(THD*, char*, char*, HA_CREATE_INFO*, TABLE_LIST*, Alter_info*, unsigned int, st_order*, bool) /10.2/sql/sql_table.cc:9831

    #1 0x55b7c929eb5a in Sql_cmd_alter_table::execute(THD*) /10.2/sql/sql_alter.cc:329

    #2 0x55b7c8f85bf1 in mysql_execute_command(THD*) /10.2/sql/sql_parse.cc:6231

    #3 0x55b7c8f90430 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /10.2/sql/sql_parse.cc:8018

    #4 0x55b7c8f6b91c in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /10.2/sql/sql_parse.cc:1829

    #5 0x55b7c8f68a4b in do_command(THD*) /10.2/sql/sql_parse.cc:1379

    #6 0x55b7c9290f36 in do_handle_one_connection(CONNECT*) /10.2/sql/sql_connect.cc:1336

    #7 0x55b7c929093e in handle_one_connection /10.2/sql/sql_connect.cc:1242

    #8 0x55b7ca44004b in pfs_spawn_thread /10.2/storage/perfschema/pfs.cc:1862

    #9 0x7f9dd86e96b9 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x76b9)

    #10 0x7f9dd7b7e41c in clone (/lib/x86_64-linux-gnu/libc.so.6+0x10741c)