Re: Cannot find a working 64-bit integer type on Illumos

On 10.12.24 03:02, Thomas Munro wrote:
> On Thu, Dec 5, 2024 at 12:16 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> Now you already snuck the camel's nose under the
>> tent by including stdint.h there, and maybe these additional headers
>> wouldn't do any further damage.
>
> Even though we fixed the immediate issue (thanks), this comment stayed
> with me. I did that because I didn't want to change any interfaces at
> the same time as the <stdint.h> retrofit, but I agree that it feels a
> bit odd hidden in there, and doesn't appear to conform to
> postgres_ext.h's self-description. Stepping back, and I realise it's
> difficult to answer with certainty, I wonder why anyone would ever
> want to use postgres_ext.h directly for the definition of pg_int64
> *without* being a user of libpq-fe.h. I can't find any references to
> pg_int64 (excluding forks of our code) on github; there are a few
> things like proxies and suchlike that include postgres_ext.h for other
> things, mostly bogusly (they also include libpq-fe.h, or they say they
> want NAMEDATALEN, which isn't there anymore).
>
> We have just three lo_*64() functions using that type and then
> pg_usec_time_t. Seems like a very narrow usage that hasn't spread,
> likely only used to receive arguments, and really quite specific to
> libpq-fe.h and not one of the "fundamental Postgres declarations".
> Maybe we should consider moving #include <stdint.h> into libpq-fe.h?
>
> And if we included <stdint.h> overtly, rather than covertly in
> postgres_ext.h, why would we still want a third name for int64_t? We
> could change the three lo_*64() declarations to use the standard type
> directly, but keep the historical typedef marked deprecated.

I agree with your patch 0001-Deprecate-pg_int64.patch. I don't see a
reason to keep the current arrangement around pg_int64.