Gregory Stark <stark@enterprisedb.com> writes:
> 4) Your problems with tsearch and timestamp etc raise an interesting problem.
> We don't need to mark this in pg_control because it's a purely a run-time
> issue and doesn't affect on-disk storage.
Just for the record, that's wrong. It's true that on-disk data isn't
affected, but the system catalog contents are, and they'd better match
what the postgres binary is going to do.
> However it does affect ABI
> compatibility with modules. Perhaps it should be added to
> PG_MODULE_MAGIC_DATA.
Very good point, especially now that it's configurable. Included
in committed patch.
regards, tom lane