TF_DeleteStatus(status);
  TF_DeleteBuffer(op_list_buffer);
}

#define C_CTX(x) reinterpret_cast<TF_ShapeInferenceContext*>(x)
#define C_SHP(x) reinterpret_cast<TF_ShapeHandle*>(x)

static OpDef MakeOpDef(int num_inputs, int num_outputs) {
  OpRegistrationData op_reg_data;
  OpDefBuilder b("dummy");
  for (int i = 0; i < num_inputs; ++i) {
    b.Input(strings::StrCat("i", i, ": float"));
  }