A function call inside a package specification crashes the server

SET sql_mode=ORACLE;

DELIMITER $$

CREATE PACKAGE pkg AS

  PROCEDURE p1(a BIGINT DEFAULT NOSUCH_FUNC());

END;

$$

DELIMITER ;

#0  0x00007ffff7082e7c in __pthread_kill_implementation ()

   from /lib64/libc.so.6

#1  0x00007ffff7028f0e in raise () from /lib64/libc.so.6

#2  0x00007ffff70106d0 in abort () from /lib64/libc.so.6

#3  0x00007ffff7010639 in __assert_fail_base.cold () from /lib64/libc.so.6

#4  0x0000555555da20ec in is_package_public_routine_quick (thd=0x77ff9c000dc8, 

    db=..., pkgname=..., name=..., type=SP_TYPE_FUNCTION)

    at /home/bar/maria-git/11.8/sql/sp.cc:2537

#5  0x0000555555da2627 in Sp_handler::sp_resolve_package_routine_implicit (

    this=0x555557cc4b88 <sp_handler_function>, thd=0x77ff9c000dc8, 

    caller=0x77ff9c042d70, name=0x77ff9c043c30, 

    pkg_routine_handler=0x7ffff40a2018, pkgname=0x7ffff40a2040)

    at /home/bar/maria-git/11.8/sql/sp.cc:2650

#6  0x0000555555da293b in Sp_handler::sp_resolve_package_routine (

    this=0x555557cc4b88 <sp_handler_function>, thd=0x77ff9c000dc8, 

    caller=0x77ff9c042d70, name=0x77ff9c043c30, 

    pkg_routine_handler=0x7ffff40a2018, pkgname=0x7ffff40a2040)

    at /home/bar/maria-git/11.8/sql/sp.cc:2705

#7  0x0000555555c24c63 in Create_sp_func::create_with_db (

    this=0x555557cc17f8 <Create_sp_func::s_singleton>, thd=0x77ff9c000dc8, 

    db=..., name=..., use_explicit_name=false, item_list=0x0)

    at /home/bar/maria-git/11.8/sql/item_create.cc:3013

#8  0x0000555555c23d26 in Create_qfunc::create_func (

    this=0x555557cc17f8 <Create_sp_func::s_singleton>, thd=0x77ff9c000dc8, 

    name=0x7ffff40a34f0, item_list=0x0)

    at /home/bar/maria-git/11.8/sql/item_create.cc:2863

#9  0x0000555555b2f36e in ORAparse (thd=0x77ff9c000dc8)

    at /home/bar/maria-git/11.8/sql/sql_yacc.yy:10940

#10 0x0000555555736baf in parse_sql (thd=0x77ff9c000dc8, 

    parser_state=0x7ffff40a3f60, creation_ctx=0x0, do_pfs_digest=true)

    at /home/bar/maria-git/11.8/sql/sql_parse.cc:10334

#11 0x0000555555730af5 in mysql_parse (thd=0x77ff9c000dc8, 

    rawbuf=0x77ff9c034b70 "CREATE PACKAGE pkg AS\n  PROCEDURE p1(a BIGINT DEFAULT NOSUCH_FUNC());\nEND", length=73, parser_state=0x7ffff40a3f60)

    at /home/bar/maria-git/11.8/sql/sql_parse.cc:7890