It is possible to have DEBUG disabled but asserts on (NDEBUG), which cannot build because these asserts work on members that are only present when DEBUG is on. Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com> Signed-off-by: Dylan Baker <dylanx.c.baker@intel.com>