Block INSERT parsing fails with lots of instances.

[maslke]

I created a DWG file with AutoCAD 2014.
In this file, I defined a block and inserted it many times (over 30,000).

When I tried to parse it into GeoJSON using the code below:

int convert_insert(Dwg_Entity_INSERT *entity) {
  Dwg_Data *dwg = entity->parent->dwg;
  Dwg_Object_Ref *ref = entity->block_header;
  Dwg_Object *block_obj = ref->obj;
  
  Dwg_Object *current_entity = get_first_owned_entity(block_obj);
  while (current_entity != NULL) {
    // do something
    current_entity = get_next_owned_entity(block_obj, current_entity);
  }
  return 0;
}

1234.zip

I noticed that the while loop never executes.If I reduce the number of inserted blocks to around 20,000, the code works as expected. is there a potential limitation here?

Thank you.

[rurban]

Yes, Indeed I think I've put some artificial limitation in there, to avoid DOS attacks or fuzzing errors. Will check and remove if so

[maslke]

In a real scenario of converting a DWG file to GeoJSON, I found that some insert entities were missing after the conversion. After I deleted part of the entities, I was able to successfully convert those insert entities. That’s why I carried out the above tests.

[maslke]

There weren’t that many entities in my file — about 9,000.

[rurban]

Just give me some time. I just broke my right shoulder and should not be typing anything... :)

[maslke]

Sorry to hear that. Wishing you a smooth and speedy recovery! 🙏

Take all the time you need.