message: Fixing nondeterministic nullptr access.
diff: @@ -159,7 +159,9 @@ class SparseAddOp : public OpKernel {
  out_indices_mat.chip<0>(i) =
  from_a ? a_indices_mat.chip<0>(idx) : b_indices_mat.chip<0>(idx);
  }
  + if (sum_nnz > 0) {
  std::copy_n(out_values.begin(), sum_nnz, &out_values_flat(0));
  + }
  ctx->set_output(2, *a_shape);
  }
  };
  