hi,

Please post a link to the patch in the bug tracker directly.

Thanks for your work,

Cheers,

On Tue, Mar 10, 2009 at 12:17 PM, Martin McNickle
<mmcnickleb...@googlemail.com> wrote:
> Hi all,
>
> I've created a simple patch for Bug #45799 [1]
>
> It employs a simple check to see if there are any colors associated with
> the image before outputting the PNG header.
>
> The patch is against CVS 5.3, shown below for convenience. I can create
> patches for the other branches if required. The tests pass.
>
> This is my first patch to PHP, so I've done anything wrong, give me some
> pointers as to how to fix it.
>
> Thanks,
>
> -- Martin McNickle
>
> [1] http://bugs.php.net/bug.php?id=45799
>
> Index: ext/gd/libgd/gd_png.c
> ===================================================================
> RCS file: /repository/php-src/ext/gd/libgd/gd_png.c,v
> retrieving revision 1.17.4.2.2.5.2.3
> diff -u -r1.17.4.2.2.5.2.3 gd_png.c
> --- ext/gd/libgd/gd_png.c       14 Jan 2009 10:16:15 -0000      
> 1.17.4.2.2.5.2.3
> +++ ext/gd/libgd/gd_png.c       10 Mar 2009 11:12:02 -0000
> @@ -650,6 +650,12 @@
>                png_set_PLTE(png_ptr, info_ptr, palette, colors);
>        }
>
> +       if (colors <= 0 && !im->trueColor) {
> +               php_gd_error("gd-png error: Invalid number of colors in
> palette./martin");
> +               png_destroy_write_struct (&png_ptr, &info_ptr);
> +               return;
> +       }
> +
>        /* write out the PNG header info (everything up to first IDAT) */
>        png_write_info(png_ptr, info_ptr);
>
>
>
> --
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>



-- 
Pierre

http://blog.thepimp.net | http://www.libgd.org

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