bool Binary::unexport(const std::string& name) {
  for (const std::unique_ptr<Symbol>& s : symbols_) {
    if (s->name() == name && s->has_export_info()) {
      return unexport(*s);
    }
  }
  return false;
}
bool Binary::unexport(const std::string& name) {
  for (const std::unique_ptr<Symbol>& s : symbols_) {
    if (s->name() == name && s->has_export_info()) {
      return unexport(*s);
    }
  }
  return false;
}