[BUGS] BUG #14682: row level security not work with partitioned table

The following bug has been logged on the website:

Bug reference:      14682
Logged by:          Fakhroutdinov Evgenievich
Email address:      fte@nct.ru
PostgreSQL version: 10beta1
Operating system:   macOS Sierra 10.12.5
Description:

create table test (   id bigserial not null,    tm timestamp not null,    user_name text not null,    rem text
) partition by range (tm);

create table test_1q (like test including all);
create table test_2q (like test including all);

alter table test attach partition test_1q for values from ('2017-01-01') to
('2017-04-01');
alter table test attach partition test_2q for values from ('2017-04-01') to
('2017-07-01');

CREATE ROLE bob;    -- Normal user
CREATE ROLE alice;  -- Normal user

insert into test(tm,user_name,rem)
values
('2017-01-09 22:15:15','bob','bla-bla'),
('2017-02-09 22:15:15','alice','bla-bla'),
('2017-03-09 22:15:15','bob','bla-bla'),
('2017-04-09 22:15:15','alice','bla-bla'),
('2017-05-09 22:15:15','bob','bla-bla'),
('2017-06-09 22:15:15','alice','bla-bla');

ALTER TABLE test ENABLE ROW LEVEL SECURITY;
ALTER TABLE test_1q ENABLE ROW LEVEL SECURITY;
ALTER TABLE test_2q ENABLE ROW LEVEL SECURITY;

CREATE POLICY view_test ON test FOR SELECT USING (current_user =
user_name);
CREATE POLICY view_test_1q ON test_1q FOR SELECT USING (current_user =
user_name);
CREATE POLICY view_test_2q ON test_2q FOR SELECT USING (current_user =
user_name);

GRANT SELECT ON test TO public;
GRANT SELECT ON test_1q TO public;
GRANT SELECT ON test_2q TO public;

set role to bob;
select * from test;id |         tm          | user_name |   rem   
----+---------------------+-----------+--------- 1 | 2017-01-09 22:15:15 | bob       | bla-bla 2 | 2017-02-09 22:15:15
|alice     | bla-bla 3 | 2017-03-09 22:15:15 | bob       | bla-bla 4 | 2017-04-09 22:15:15 | alice     | bla-bla 5 |
2017-05-0922:15:15 | bob       | bla-bla 6 | 2017-06-09 22:15:15 | alice     | bla-bla
 
(6 rows)

select * from test_1q;id |         tm          | user_name |   rem   
----+---------------------+-----------+--------- 1 | 2017-01-09 22:15:15 | bob       | bla-bla 3 | 2017-03-09 22:15:15
|bob       | bla-bla
 
(2 rows)

select * from test_2q;id |         tm          | user_name |   rem   
----+---------------------+-----------+--------- 5 | 2017-05-09 22:15:15 | bob       | bla-bla
(1 row)




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