"?" hstore operator broken in 9.2?

Hi,

When I execute the following query:

SELECT 'a=>1'::hstore ? 'a'::text

I get an “Input parameter count is less then expected” error message.

SELECT defined('a=>1'::hstore, 'a'::text)  -- works

I have tried on Linux Ubuntu (9.2.1)  and Windows 7 (9.2.2) machines.

My knowledge and experience with the system catalogs is limited so if you need additional information please be specific.

Thanks!

Dave