Server in ORACLE mode crashes on ALTER with wrong DEFAULT clause

set sql_mode=ORACLE;

create table t (i int);

alter table t add b char(255) default "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";

# Cleanup

drop table t;

#5  0x00007f7abdcff3fa in abort () from /lib/x86_64-linux-gnu/libc.so.6

#6  0x00007f7abdd3bbd0 in __libc_message () from /lib/x86_64-linux-gnu/libc.so.6

#7  0x00007f7abddc4037 in __fortify_fail () from /lib/x86_64-linux-gnu/libc.so.6

#8  0x00007f7abddc4000 in __stack_chk_fail () from /lib/x86_64-linux-gnu/libc.so.6

#9  0x0000560dc6600553 in mark_unsupported_func (where=0x7f7aa4015298 'a' <repeats 46 times>, processor_name=0x560dc6f92356 "check_vcol_func_processor") at /data/src/10.3/sql/item.cc:1497

#10 0x0000560dc6600594 in mark_unsupported_function (where=0x7f7aa4015298 'a' <repeats 46 times>, store=0x7f7ab3f682b0, result=1) at /data/src/10.3/sql/item.cc:1507

#11 0x0000560dc661b2c7 in Item_field::check_vcol_func_processor (this=0x7f7aa4015328, arg=0x7f7ab3f682b0) at /data/src/10.3/sql/item.h:2833

#12 0x0000560dc6254611 in Item::walk (this=0x7f7aa4015328, processor=&virtual table offset 1016, walk_subquery=false, arg=0x7f7ab3f682b0) at /data/src/10.3/sql/item.h:1449

#13 0x0000560dc65d2e9f in check_expression (vcol=0x7f7aa4015430, name=0x7f7aa4015180, type=VCOL_DEFAULT) at /data/src/10.3/sql/field.cc:10029

#14 0x0000560dc65d34a5 in Column_definition::check (this=0x7f7aa4015170, thd=0x7f7aa4000b00) at /data/src/10.3/sql/field.cc:10163

#15 0x0000560dc6579ed8 in ORAparse (thd=0x7f7aa4000b00) at /data/src/10.3/sql/sql_yacc_ora.yy:6029

#16 0x0000560dc633b361 in parse_sql (thd=0x7f7aa4000b00, parser_state=0x7f7ab3f6a610, creation_ctx=0x0, do_pfs_digest=true) at /data/src/10.3/sql/sql_parse.cc:9961

#17 0x0000560dc6336656 in mysql_parse (thd=0x7f7aa4000b00, rawbuf=0x7f7aa40149f8 "alter table t add b char(255) default \"", 'a' <repeats 46 times>, "\"", length=86, parser_state=0x7f7ab3f6a610, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:7883

#18 0x0000560dc6324282 in dispatch_command (command=COM_QUERY, thd=0x7f7aa4000b00, packet=0x7f7aa4149c41 "alter table t add b char(255) default \"", 'a' <repeats 46 times>, "\"", packet_length=86, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:1819

#19 0x0000560dc6322ce4 in do_command (thd=0x7f7aa4000b00) at /data/src/10.3/sql/sql_parse.cc:1370

#20 0x0000560dc647901a in do_handle_one_connection (connect=0x560dc9e65260) at /data/src/10.3/sql/sql_connect.cc:1418

#21 0x0000560dc6478da7 in handle_one_connection (arg=0x560dc9e65260) at /data/src/10.3/sql/sql_connect.cc:1324

#22 0x0000560dc68f0720 in pfs_spawn_thread (arg=0x560dc9efe240) at /data/src/10.3/storage/perfschema/pfs.cc:1862

#23 0x00007f7abfc3b494 in start_thread (arg=0x7f7ab3f6b700) at pthread_create.c:333

#24 0x00007f7abddb393f in clone () from /lib/x86_64-linux-gnu/libc.so.6

alter table t add b char(255) default "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";

#4  0x0000560297982ee3 in handle_fatal_signal (sig=11) at /data/src/10.3/sql/signal_handler.cc:166

#5  <signal handler called>

#6  0x00007f45915f2498 in ?? () from /lib/x86_64-linux-gnu/libgcc_s.so.1

#7  0x00007f45915f36ed in _Unwind_Backtrace () from /lib/x86_64-linux-gnu/libgcc_s.so.1

#8  0x00007f459133aaaf in backtrace () from /lib/x86_64-linux-gnu/libc.so.6

#9  0x00007f45912649c6 in backtrace_and_maps () from /lib/x86_64-linux-gnu/libc.so.6

#10 0x00007f45912b5bcb in __libc_message () from /lib/x86_64-linux-gnu/libc.so.6

#11 0x00007f459133e037 in __fortify_fail () from /lib/x86_64-linux-gnu/libc.so.6

#12 0x00007f459133e000 in __stack_chk_fail () from /lib/x86_64-linux-gnu/libc.so.6

#13 0x000056029799c553 in mark_unsupported_func (where=0x7f45700152e0 'a' <repeats 71 times>, processor_name=0x56029832e356 "check_vcol_func_processor") at /data/src/10.3/sql/item.cc:1497

#14 0x000056029799c594 in mark_unsupported_function (where=<error reading variable: Cannot access memory at address 0x7f4587007257>, store=<error reading variable: Cannot access memory at address 0x7f458700724f>, result=<error reading variable: Cannot access memory at address 0x7f458700724b>) at /data/src/10.3/sql/item.cc:1507

Backtrace stopped: previous frame inner to this frame (corrupt stack?)