[Mesa-stable] [Mesa-dev] [PATCH] st/glsl_to_nir: fix incorrect arrary access

[Emil Velikov]

On Mon, 25 Mar 2019 at 21:47, Timothy Arceri <tarceri at itsqueeze.com> wrote:
>
> On 26/3/19 3:43 am, Emil Velikov wrote:
> > Hi Timothy,
> >
> > On Fri, 1 Mar 2019 at 10:36, Timothy Arceri <tarceri at itsqueeze.com> wrote:
> >>
> >> This fixes a segfault when we try to access the array using a
> >> -1 when the array wasn't allocated in the first place.
> >>
> >> Before 7536af670b75 we would just access a pre-allocated array
> >> that was also load/stored to/from the shader cache. But now the
> >> cache will no longer allocate these arrays if they are empty.
> >> The change resulted in tests such as the following segfaulting
> >> when run with a warm shader cache.
> >>
> > I was going through some extra checks for 18.3 and noticed this commit.
> >
> > Admittedly it does not fix 7536af670b75 although it does address a
> > preexisting issue exposed by it.
> > That said I suspect we'd want this for stable?
>
> This fixes an issue that is not part of the default path of any drivers
> so I'm happy to skip back porting to stable.

Fair enough, thanks for the confirmation.

-Emil