function over non existing table which is in a process of creation return error in 5.5 and pass in 10.1

DELIMITER |;

CREATE function f1() returns int

BEGIN

  declare n int;

  set n:= (select count(*) from t1);

  return n;

end|

DELIMITER ;|

create table t1 as select  f1() union all select last_insert_id() ;

select * from t1;

drop table t1;

drop function f1;

CREATE function f1() returns int

BEGIN

declare n int;

set n:= (select count(*) from t1);

return n;

end|

create table t1 as select  f1() union all select last_insert_id() ;

select * from t1;

f1()

0

0

drop table t1;

drop function f1;

main.test3                               [ pass ]      8

CREATE function f1() returns int

BEGIN

declare n int;

set n:= (select count(*) from t1);

return n;

end|

create table t1 as select  f1() union all select last_insert_id() ;

main.test3                               [ fail ]

        Test ended at 2015-03-12 22:53:04

CURRENT_TEST: main.test3

mysqltest: At line 13: query 'create table t1 as select  f1() union all select last_insert_id() ' failed: 1146: Table 'test.t1' doesn't exist