Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> Also, I am using flex 2.5.4, and an seeing no shift-reduce errors from
> the current gram.y.
You wouldn't, because the critical item is still commented out.
| REFERENCES ColId opt_column_list key_match key_actions
{
/* XXX
* Need ConstraintAttributeSpec as $6 -- Jan
*/
If you add ConstraintAttributeSpec to the end of this production,
it fails...
regards, tom lane