- if (PB_ATYPE(prev_field->type) == PB_ATYPE_STATIC &&
- PB_HTYPE(prev_field->type) == PB_HTYPE_REPEATED)
+ if (PB_HTYPE(prev_field->type) == PB_HTYPE_ONEOF &&
+ PB_HTYPE(iter->pos->type) == PB_HTYPE_ONEOF &&
+ iter->pos->data_offset == PB_SIZE_MAX)
+ {
+ /* Don't advance pointers inside unions */
+ return true;
+ }
+ else if (PB_ATYPE(prev_field->type) == PB_ATYPE_STATIC &&
+ PB_HTYPE(prev_field->type) == PB_HTYPE_REPEATED)