On Tue, Feb 10, 2009 at 10:54 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Robert Haas <robertmhaas@gmail.com> writes:
>>> We could do that, I guess. However, if an application passes this in to
>>> an old version of libpq, there is no way to know that it didn't know
>>> about it.
>
>> Well, you could create PQinitSSLExtended, but, as you say, the use
>> case is pretty narrow...
>
>> It would help if there were a PQgetLibraryVersion() function.
>
> Help how? There is nothing an app can do to work around the problem
> AFAICS. Or if there were, we should just document it and not change
> the code --- the use case for this is evidently too narrow to justify
> complicating libpq's API even more.
It would let you assert that you were running against a version of
libpq that has the functionality that you are attempting to use, thus
eliminating the risk of silent failure.
...Robert