felipecrv commented on issue #2526:
URL: https://github.com/apache/arrow-adbc/issues/2526#issuecomment-2661051639
> It would be nice to know which data type Rust is complaining about (are
there any data types that require an alignment >8 bytes anywhere in the spec?)
The integers coming from the Snowflake driver are actually `decimal128` and
`arrow-rs` uses `mem::align_of::<u128>()` to pick the `BufferSpec::FixedWidth {
alignment }` for the decimal 128 buffers [1]. That is 16 bytes and C `malloc`
only guarantees 8-byte alignment unless a `malloc` that takes alignment
arguments is used. That's really hard to guarantee from Go or C code.
[1] https://github.com/apache/arrow-rs/blob/main/arrow-data/src/data.rs#L1591
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