Constraint type not consistent when partitioning by int8

[digoal]

postgres=# drop table test;
postgres=# create table test(id int8 primary key, info text, crt_time timestamp);
CREATE TABLE
postgres=# 
postgres=# select create_range_partitions('test'::regclass, 'id', 1::int8, 20000000::int8, 500::int8, false);
 create_range_partitions 
-------------------------
                     500
(1 row)
postgres=# select create_range_update_trigger('test'::regclass);
 create_range_update_trigger 
-----------------------------
 postgres.test_upd_trig_func
(1 row)
postgres=# select disable_parent('test'::regclass);
 disable_parent 
----------------

(1 row)
postgres=# explain select * from test where id=1;
WARNING:  Constant type in some check constraint does not match the partitioned column's type
ERROR:  Wrong constraint format for RANGE partition "test_1"
HINT:  pg_pathman will be disabled to allow you to resolve this issue

[funbringer]

Duplicate issue #30