Re: reducing the footprint of ScanKeyword (was Re: Large writable variables) - Mailing list pgsql-hackers

Andres Freund <andres@anarazel.de> writes:
> On 2019-01-09 14:44:24 -0500, Tom Lane wrote:
>> /* fast lookup only possible if original oid still assigned */
>> -    if (id >= FirstGenbkiObjectId)
>> +    if (id > fmgr_last_builtin_oid)
>>         return NULL;

> An extern reference here will make the code a bit less efficient, but
> it's probably not worth generating a header with a define for it
> instead...

Yeah, also that would be significantly more fragile, in that it'd
be hard to be sure where that OID had propagated to when rebuilding.
We haven't chosen to make fmgr_nbuiltins a #define either, and I think
it's best to treat this the same way.

            regards, tom lane