Re: Buffer overruns in gtk 1.3.12 (gdk-pixbuf)?

[Owen Taylor <otaylor redhat com>]

Jason Tackaberry <tack auc ca> writes:

> I see on Gnotices that gdk-pixbuf 0.16.0 is released, and in the changes
> says:
> 
>         * Merged fixes in GTK+ 2.0 to the pixops directory.  This should
>           fix some memory overruns in the scaling/compositing code
>           (Merge by   Federico; fixes by Owen Taylor, Michael Hore, Sven
>           Neumann,   Darin Adler).
> 
> As I am noticing some weird, seemingly random and infrequent image
> corruption with gdk-pixbuf scaling operations in gtk 1.3.12 (I've yet to
> come up with a simple test case that reliabley reproduces the problem),
> I am wondering if some of these fixes that made it into gdk-pixbuf
> 0.16.0 were not in gtk+ 1.3.12?
> 
> Stability seems unaffacted, it just results in a corrupted (i.e. noisy
> garbage) image.  If it's any hint, I'm seeing more corruption with
> GDK_INTERP_NEAREST than GDK_NEAREST_TILES.

The fixes to pixops were not in 1.3.12. But they should have no effect
on GDK_INTERP_NEAREST.

If you come up with a test case, please file it at bugzilla.gnome.org.

Regards,
                                        Owen