TF_OperationGetAttrShape(oper, "v", nullptr, 10, s_);
  EXPECT_EQ(TF_OK, TF_GetCode(s_)) << TF_Message(s_);

  // Partially specified shape
  const int64_t partial_shape[] = {17, -1};
  const size_t sz = TF_ARRAYSIZE(partial_shape);
  desc = init("shape");
  TF_SetAttrShape(desc, "v", partial_shape, sz);
  oper = TF_FinishOperation(desc, s_);