The following function is supposed to return size in words:
```
  static int size(int vtable_length, int itable_length,
                  int nonstatic_oop_map_size,
                  bool is_interface,
                  bool is_inline_type) {
    return align_metadata_size(header_size() +
           vtable_length +
           itable_length +
           nonstatic_oop_map_size +
           (is_interface ? (int)sizeof(Klass*)/wordSize : 0) +
           (is_inline_type ? (int)sizeof(InlineKlassFixedBlock) : 0));
  }
```
but `sizeof(InlineKlassFixedBlock)` returns a size in bytes. This adds 640 bytes instead of 80 bytes to all InlineKlasses.