message: Add ifdef guard to suppress unused variable warning
diff: @@ -450,7 +450,9 @@ AXOM_HOST_DEVICE static inline BBoxType sync_load(const BBoxType& box)
  PointType min_pt {BBoxType::InvalidMin};
  PointType max_pt {BBoxType::InvalidMax};
  + #ifdef SPIN_BVH_DEBUG_MEMORY_HAZARD
  int nreads = 0; // number of extra reads needed for a non-sentinel value
  + #endif
  for(int dim = 0; dim < NDIMS; dim++)
  {
  // Cast to volatile so reads always hit L2$ or memory.
  