Re: Endless loop in version 1.6.26

I was expecting this change to cause a regression of mozilla bug #1300661
but it doesn't. It seems that I neglected to back out the change from the
progressive reader, libpng16/pngpread.c lines 844-847:

            if (ret == Z_DATA_ERROR)
               png_benign_error(png_ptr, "IDAT: ADLER32 checksum mismatch");
            else
               png_error(png_ptr, "Decompression error in IDAT");

In libpng-1.6.25 this is simply a png_error().

I've just verified that if I do back out this change, the mozilla bug does
regress.
The web page in question is still generating a PNG/CAPTCHA image with
invalid ADLER32 checksum.


On Tue, Nov 8, 2016 at 5:07 PM, Glenn Randers-Pehrson <[email protected]>
wrote:

> Backed out the change from pngrutil.c and pngpread.c, pushed to the git
> repos (libpng16 branch)
>
> Glenn
>

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