ASSERT_EQ(1, TF_OutputListNumOutputs(add_outputs));
  TF_AbstractTensor* final_result = TF_OutputListGet(add_outputs, 0);
  TFE_TensorHandle* final =
      TF_AbstractTensorGetEagerTensor(final_result, status.get());
  ASSERT_EQ(TF_OK, TF_GetCode(status.get())) << TF_Message(status.get());
  TF_Tensor* f_t = TFE_TensorHandleResolve(final, status.get());
  ASSERT_EQ(TF_OK, TF_GetCode(status.get())) << TF_Message(status.get());

  TFE_OpSetAttrInt(op, "group_size", group_size);
  TFE_OpSetAttrInt(op, "group_key", 123);
  TFE_OpSetAttrInt(op, "instance_key", 456);
  TFE_OpSetAttrString(op, "merge_op", "Add", 3);
  TFE_OpSetAttrString(op, "final_op", "Id", 2);
  std::vector<int64_t> subdiv_offsets;
  TFE_OpSetAttrIntList(op, "subdiv_offsets", subdiv_offsets.data(),
                       subdiv_offsets.size());

  return op;
}

        grad_it->second.clear();
        grad_it->second.push_back(grad);
      }
      result[i] = grad_it->second[0];
      used_gradient_ids.insert(tensor_id);
    }
  }
  VLOG(1) << "Final gradients size: "
          << gradients.size() - used_gradient_ids.size();
  for (const auto& grad_pair : gradients) {
    if (used_gradient_ids.find(grad_pair.first) == used_gradient_ids.end()) {

 __STRING_INLINE char *
 __strcpy_small (char *__dest,
 		__STRING2_COPY_ARR2 __src2, __STRING2_COPY_ARR3 __src3,
@@ -570,44 +309,15 @@ __strcpy_small (char *__dest,
 
 /* Copy SRC to DEST, returning pointer to final NUL byte.  */
 #ifdef __USE_GNU
-# if !defined _HAVE_STRING_ARCH_stpcpy || defined _FORCE_INLINES
-#  ifndef _HAVE_STRING_ARCH_stpcpy
-#   if __GNUC_PREREQ (3, 4)