Diagnostics area assertion failure upon CREATE TABLE (ER_CANT_AGGREGATE_2COLLATIONS)

CREATE TABLE t (a INT, b VARCHAR(8) DEFAULT (IFNULL(a,''))) CHARSET swe7;

DROP TABLE t;

 mariadbd: /data/bld/10.11-asan-ubsan/sql/sql_error.cc:346: void Diagnostics_area::set_ok_status(ulonglong, ulonglong, const char*): Assertion `!is_set() || (m_status == DA_OK_BULK && is_bulk_op())' failed.

260308 10:01:47 [ERROR] /share8t/bld/10.11-asan-ubsan/sql/mariadbd got signal 6 ;

#9  0x00007f5881a45395 in __assert_fail_base (fmt=0x7f5881bb9a90 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x5557fa3ddfa0 "!is_set() || (m_status == DA_OK_BULK && is_bulk_op())", file=file@entry=0x5557fa3df0e0 "/data/bld/10.11-asan-ubsan/sql/sql_error.cc", line=line@entry=346, function=function@entry=0x5557fa3de000 "void Diagnostics_area::set_ok_status(ulonglong, ulonglong, const char*)") at ./assert/assert.c:92

#10 0x00007f5881a53eb2 in __GI___assert_fail (assertion=0x5557fa3ddfa0 "!is_set() || (m_status == DA_OK_BULK && is_bulk_op())", file=0x5557fa3df0e0 "/data/bld/10.11-asan-ubsan/sql/sql_error.cc", line=346, function=0x5557fa3de000 "void Diagnostics_area::set_ok_status(ulonglong, ulonglong, const char*)") at ./assert/assert.c:101

#11 0x00005557f6893871 in Diagnostics_area::set_ok_status (this=this@entry=0x62c0000b6368, affected_rows=affected_rows@entry=0, last_insert_id=last_insert_id@entry=0, message=message@entry=0x0) at /data/bld/10.11-asan-ubsan/sql/sql_error.cc:346

#12 0x00005557f66bcea8 in my_ok (thd=thd@entry=0x62c0000b0218, affected_rows_arg=affected_rows_arg@entry=0, id=id@entry=0, message=message@entry=0x0) at /data/bld/10.11-asan-ubsan/sql/sql_class.h:5984

#13 0x00005557f6fcc700 in Sql_cmd_create_table_like::execute (this=<optimized out>, thd=0x62c0000b0218) at /data/bld/10.11-asan-ubsan/sql/sql_table.cc:13180

#14 0x00005557f6abbb21 in mysql_execute_command (thd=thd@entry=0x62c0000b0218, is_called_from_prepared_stmt=is_called_from_prepared_stmt@entry=false) at /data/bld/10.11-asan-ubsan/sql/sql_parse.cc:6201

#15 0x00005557f6ac036c in mysql_parse (thd=thd@entry=0x62c0000b0218, rawbuf=<optimized out>, length=<optimized out>, parser_state=parser_state@entry=0x7f5877a05ab0) at /data/bld/10.11-asan-ubsan/sql/sql_parse.cc:8223

#16 0x00005557f6ac9719 in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x62c0000b0218, packet=packet@entry=0x62900024e219 "CREATE TABLE t (a INT, b VARCHAR(8) DEFAULT (IFNULL(a,''))) CHARSET swe7", packet_length=packet_length@entry=72, blocking=blocking@entry=true) at /data/bld/10.11-asan-ubsan/sql/sql_parse.cc:1924

#17 0x00005557f6ad641e in do_command (thd=thd@entry=0x62c0000b0218, blocking=blocking@entry=true) at /data/bld/10.11-asan-ubsan/sql/sql_parse.cc:1434

#18 0x00005557f72d2db8 in do_handle_one_connection (connect=<optimized out>, connect@entry=0x6080000039b8, put_in_cache=put_in_cache@entry=true) at /data/bld/10.11-asan-ubsan/sql/sql_connect.cc:1475

#19 0x00005557f72d3f15 in handle_one_connection (arg=0x6080000039b8) at /data/bld/10.11-asan-ubsan/sql/sql_connect.cc:1387

#20 0x00005557f8c59327 in pfs_spawn_thread (arg=0x617000005b98) at /data/bld/10.11-asan-ubsan/storage/perfschema/pfs.cc:2201

#21 0x00007f5881aa81c4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442

#22 0x00007f5881b2885c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

mysqltest: At line 1: query 'CREATE TABLE t (a INT, b VARCHAR(8) DEFAULT (IFNULL(a,''))) CHARSET swe7' failed: ER_CANT_AGGREGATE_2COLLATIONS (1267): Illegal mix of collations (latin1_swedish_ci,NUMERIC) and (swe7_swedish_ci,COERCIBLE) for operation 'ifnull'