CREATE TABLE .. PRIMARY KEY quirk

Issuing the following ( admittedly bogus ) statement against 7.1.1

CREATE TABLE dir_suppliers_var_prodtype ( dir_suppliers_var_prodtype_id INTEGER , dir_suppliers_var_id  integer DEFAULT
0NOT NULL, prodtype_id  smallint DEFAULT 0 NOT NULL, PRIMARY KEY
 
(dir_suppliers_var_prodtype_id,dir_suppliers_var_prodtype_id)
);

gives the following , initially slightly cryptic response.

NOTICE:  CREATE TABLE/PRIMARY KEY will create implicit index
'dir_suppliers_var_prodtype_pkey' for table 'dir_suppliers_var_prodtype'

ERROR:  Cannot insert a duplicate key into unique index
pg_attribute_relid_attnam_index

This is obviously because of the broken primary key definition.
My question is, should this not raise a parser error ? It took me a
little while to actually spot the problem with the users statement.



-- 
Colin M Strickland  perl -e'print "\n",map{chr(ord()-3)}(reverse split
//,"\015%vhlwlqxpprF#ir#uhzrS#hkw#jqlvvhqudK%#\015\015nx".
"1rf1wilv1zzz22=swwk###369<#84<#:44#77.={di##339<#84<#:44#77.=ohw\015]".
"K9#4VE#/ORWVLUE#/whhuwV#dlurwflY#334#/wilV\015uhsrohyhG#ehZ#urlqhV");'