2nd execution name resolution problem with pushdown into unions

create table t1 (c1 int, c2 int, c3 int);

insert into t1 values (1,2,3),(4,5,6);

create table t2 like t1;

insert into t2 values (7,8,9),(10,11,12);

create view v1 (f1, f2, f3) as select * from (

  select c1, c2, sum(c3) as s from t1 group by c1, c2 having s > 2

  union

  select c1, c2, sum(c3) as u from t2 group by c1, c2 having u > 3 ) d2;

prepare stmt from 'select * from v1 where f2 > 0';

execute stmt;

execute stmt;

+------+------+------+

| f1   | f2   | f3   |

+------+------+------+

|    1 |    2 |    3 |

|    4 |    5 |    6 |

|    7 |    8 |    9 |

|   10 |   11 |   12 |

+------+------+------+

ERROR 1356 (HY000): View 'test.v1' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them