QUERY: CREATE FUNCTION widget_in(opaque)
   RETURNS widget
   AS '_CWD_/regress_DLSUFFIX_'
   LANGUAGE 'c';
NOTICE:ProcedureCreate: type 'widget' is not yet defined
QUERY: CREATE FUNCTION widget_out(opaque)
   RETURNS opaque
   AS '_CWD_/regress_DLSUFFIX_'
   LANGUAGE 'c';