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

[Timothy Arceri]

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.