scovich commented on code in PR #9820:
URL: https://github.com/apache/arrow-rs/pull/9820#discussion_r3148408981


##########
arrow-buffer/src/buffer/mutable.rs:
##########
@@ -583,7 +586,11 @@ impl MutableBuffer {
     /// Extends the buffer by `additional` bytes equal to `0u8`, incrementing 
its capacity if needed.
     #[inline]
     pub fn extend_zeros(&mut self, additional: usize) {
-        self.resize(self.len + additional, 0);
+        let new_len = self
+            .len
+            .checked_add(additional)
+            .expect("buffer length overflow");

Review Comment:
   Introducing internal panics is not ideal, tho clearly better than UB. How 
should library users code defensively to avoid panic, and how can we make their 
life easier?



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