jhorstmann opened a new issue #1410:
URL: https://github.com/apache/arrow-rs/issues/1410
The following test fails when run under miri:
```
#[test]
fn mutable_push_unaligned_u64() {
let mut buf = MutableBuffer::new(16);
buf.push(1_u8);
buf.push(1_u64);
assert_eq!(9, buf.len());
assert_eq!(&[1u8, 1u8, 0, 0, 0, 0, 0, 0, 0], buf.as_slice());
}
```
The code uses `std::ptr::write` to append the u64, regardless of the current
alignment. Replacing that with `write_unaligned` would probably work. The type
parameter is constrained by the `ToByteSlice` trait, but it seems the trait is
not actually used. Not sure whether this is expected. It seems `ToByteSlice` is
more of a marker trait here that indicates that the contents can be transmuted
to a slice of bytes.
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