Bug in ADD COLUMN with REFERENCES

Try this:

test=# create table parent(a int4 primary key);
NOTICE:  CREATE TABLE/PRIMARY KEY will create implicit index 'parent_pkey'
for table 'parent'
CREATE
test=# alter table parent add column "b" int4 references parent(c) on delete
set null;
ALTER
test=# \d test
Did not find any relation named "test".
test=# \d parent        Table "parent"Attribute |  Type   | Modifier
-----------+---------+----------a         | integer | not nullb         | integer |
Index: parent_pkey


Notice how the reference to the non-existent column was allowed...

Now I check the pg_trigger table:

test=# select * from pg_trigger;tgrelid |     tgname     | tgfoid | tgtype | tgenabled | tgisconstraint |
tgconst
rname | tgconstrrelid | tgdeferrable | tginitdeferred | tgnargs | tgattr |
tgargs
---------+----------------+--------+--------+-----------+----------------+--
------
------+---------------+--------------+----------------+---------+--------+--
------   1260 | pg_sync_pg_pwd |   1689 |     29 | t         | f              |     |             0 | f            | f
           |       0 |        |
 
(1 row)

...and it looks like the reference was never created...

Chris