[Mesa-dev] [PATCH mesa] util: use *unsigned* ints for bit operations

[Dave Airlie]

On Tue, 23 Oct 2018 at 10:57, Eric Anholt <eric at anholt.net> wrote:
>
> Eric Engestrom <eric.engestrom at intel.com> writes:
>
> > Fixes errors thrown by GCC's Undefined Behaviour sanitizer (ubsan) every
> > time this macro is used.

This seems to be causing problems for me here on gcc8 (8.0.1 and
8.2.1) in Fedora 28.

./bin/texelFetch fs usampler2DMS 2

is failing here with:
Failed to compile fragment shader: 0:6(1): error: invalid input layout
qualifier used

gcc is probably broken, but we might want to revert his from the tree
and upcoming release until we can figure it out.

Dave.