yordan-pavlov commented on a change in pull request #1225: URL: https://github.com/apache/arrow-rs/pull/1225#discussion_r790332330
########## File path: arrow/src/array/transform/mod.rs ########## @@ -608,18 +614,28 @@ impl<'a> MutableArrayData<'a> { /// This function panics if the range is out of bounds, i.e. if `start + len >= array.len()`. pub fn extend(&mut self, index: usize, start: usize, end: usize) { let len = end - start; - (self.extend_null_bits[index])(&mut self.data, start, len); + if !self.extend_null_bits.is_empty() { + (self.extend_null_bits[index])(&mut self.data, start, len); Review comment: yes, I agree - this needs clarification or fixing, to make it less confusing -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org