is this a bug in glibc or readpst?

[Florian Weimer]

* Paul Wise:

> On Mon, 2023-08-07 at 10:59 +0200, Florian Weimer wrote:
>
>> We could perhaps avoid the seek for read-only streams.  We are about to
>> close the stream anyway, so fflush does not have any useful effect
>> anyway.  Not sure what others think if it is worth the complexity.  On
>> the other hand, preserving backwards compatibility here does not appear
>> to be too onerous.
>
> It might be worth checking what other implementations do, perhaps
> if they all avoid the seek in this case then maybe glibc should too?

I expect this is difficult to figure out for certain because of the
internal stream state may not be very clear unless you are familiar with
the code. 8-(

So I'd prefer to fix the glibc regression instead.

Thanks,
Florian