e93979ba59
Several optimization paths, including constant folding, can lead to accessing an ir_constant vector with an out of bounds index. Return 0 since GL_ARB_robustness and GL_KHR_robustness encourage us to do so. Fixes piglit tests: spec@glsl-1.20@execution@vector-out-of-bounds-access@fs-vec4-out-of-bounds-2 spec@glsl-1.20@execution@vector-out-of-bounds-access@fs-vec4-out-of-bounds-4 spec@glsl-1.20@execution@vector-out-of-bounds-access@fs-vec4-out-of-bounds-5 Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/2604 CC: <mesa-stable@lists.freedesktop.org> Signed-off-by: Danylo Piliaiev <danylo.piliaiev@globallogic.com> Reviewed-by: Eric Anholt <eric@anholt.net> Reviewed-by: Marcin Ślusarz <marcin.slusarz@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6363>