[pdftex] Error when including image with bogus resolution

[Max Chernoff]

Hi Akira,

On Mon, 2025-02-10 at 00:41 +0900, Akira Yokosawa wrote:
> I have installed and started testing TeXLive 2025 pretest.
>
> I got a ton of new warning messages from pdfTeX, an example of which
> looks like this:
>
> -------------------------------------------------------------
> pdfTeX warning (ext1): too small image resolution ignored       <-- new warning
> <SMPdesign/clockfreq.pdf, id=2971, 239.89626pt x 211.79124pt>
> File: SMPdesign/clockfreq.pdf Graphic file (type pdf)
> <use SMPdesign/clockfreq.pdf>
> Package pdftex.def Info: SMPdesign/clockfreq.pdf  used on input line 345.
> (pdftex.def)             Requested size: 239.89566pt x 211.79073pt.
> -------------------------------------------------------------
>
> Is there any possibility this has something to do with the fix of jpg image
> inclusion?

Yes, indeed, I forgot to handle the case where an included image has no
resolution data at all (which is the case for all PDFs). I've attached a
patch that fixes this, hopefully without creating any new problems this
time.

Thanks,
-- Max
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