    const COPY_SIZE: usize = 512;
    while src.len() >= COPY_SIZE {
        #[allow(clippy::ptr_offset_with_cast)]
        let (src_word, src_rem) = array_refs![src, COPY_SIZE; ..;];
        #[allow(clippy::ptr_offset_with_cast)]
        let (dst_word, dst_rem) = mut_array_refs![dst, COPY_SIZE; ..;];
        *dst_word = *src_word;