message: Print the actual version, not the pointer
diff: @@ -276,7 +276,7 @@ std::ostream& operator<<(std::ostream& os, const Symbol& entry) {
  << std::setw(10) << entry.size();
  if (entry.has_version()) {
  - os << std::setw(10) << entry.symbol_version();
  + os << std::setw(10) << *entry.symbol_version();
  }
  return os;
  