crepererum commented on code in PR #4681:
URL: https://github.com/apache/arrow-rs/pull/4681#discussion_r1291214491
##########
arrow-data/src/data.rs:
##########
@@ -736,17 +753,25 @@ impl ArrayData {
self.buffers.iter().zip(layout.buffers.iter()).enumerate()
{
match spec {
- BufferSpec::FixedWidth { byte_width } => {
- let min_buffer_size = len_plus_offset
- .checked_mul(*byte_width)
- .expect("integer overflow computing min buffer size");
+ BufferSpec::FixedWidth {
+ byte_width,
+ alignment,
+ } => {
+ let min_buffer_size =
len_plus_offset.saturating_mul(*byte_width);
if buffer.len() < min_buffer_size {
return Err(ArrowError::InvalidArgumentError(format!(
"Need at least {} bytes in buffers[{}] in array of
type {:?}, but got {}",
min_buffer_size, i, self.data_type, buffer.len()
)));
}
+
+ if buffer.as_ptr().align_offset(*alignment) != 0 {
+ return Err(ArrowError::InvalidArgumentError(format!(
+ "Misaligned buffers[{i}] in array of type {:?},
expected {alignment}",
Review Comment:
I think it would be helpful for debugging to include the actual alignment in
addition to the expected value.
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