These two functions look similar but work slightly differently. The difference has caused JDK-8365805. They should be combined into a single function.

https://github.com/openjdk/jdk/blob/024292ac4dde7e49816d82d5f8a30a3e11f44d18/src/hotspot/share/cds/archiveBuilder.cpp#L749-L762

bool ArchiveBuilder::has_been_archived(address src_addr) const {
  SourceObjInfo* p = _src_obj_table.get(src_addr);
  return (p != nullptr);
}

bool ArchiveBuilder::has_been_buffered(address src_addr) const {
  if (RegeneratedClasses::has_been_regenerated(src_addr) ||
      _src_obj_table.get(src_addr) == nullptr ||
      get_buffered_addr(src_addr) == nullptr) {
    return false;
  } else {
    return true;
  }
}