namespace tensorflow {

Safe_TF_TensorPtr make_safe(TF_Tensor* tensor) {
  return Safe_TF_TensorPtr(tensor);
}

Safe_TFE_TensorHandlePtr make_safe(TFE_TensorHandle* handle) {
  return Safe_TFE_TensorHandlePtr(handle);
}

Safe_TF_StatusPtr make_safe(TF_Status* status) {
  return Safe_TF_StatusPtr(status);
}

Safe_TF_BufferPtr make_safe(TF_Buffer* buffer) {
  return Safe_TF_BufferPtr(buffer);
}

Safe_TF_TensorPtr make_safe(TF_Tensor* tensor);

// Safe containers for an owned TFE_TensorHandle. On destruction, the handle
// will be deleted by TFE_DeleteTensorHandle.
using Safe_TFE_TensorHandlePtr =
    std::unique_ptr<TFE_TensorHandle, detail::TFETensorHandleDeleter>;
Safe_TFE_TensorHandlePtr make_safe(TFE_TensorHandle* handle);

  CheckOutputShapes(matmul_op,
                    /*input_shapes*/ {make_shape({3, 2}), make_shape({2, 4})},
                    /*input_tensors*/ {},
                    /*expected_shape*/ make_shape({3, 4}));

  // Infer shape when second operand has unknown shape.
  CheckOutputShapes(matmul_op,
                    /*input_shapes*/ {make_shape({3, 2}), unknown_shape()},
                    /*input_tensors*/ {},