Re: [PATCH v8] rust: transmute: Add methods for FromBytes trait

["Alexandre Courbot" <acourbot@nvidia.com>]

Hi Christian,

Any plan for a v9 soon? I would like to make sure we secure this into
the Nova tree as we are highly dependent on this feature.

On Tue Jun 24, 2025 at 1:28 PM JST, Christian S. Lima wrote:
<snip>
> +// SAFETY: All bit patterns are acceptable values of the types and in array case if all bit patterns
> +// are acceptable for individual values in an array, then all bit patterns are also acceptable
> +// for arrays of that type.
> +unsafe impl<T> FromBytes for T
> +where
> +    T: FromBytesSized,
> +{
> +    fn from_bytes(bytes: &[u8]) -> Option<&Self> {
> +        let slice_ptr = bytes.as_ptr().cast::<T>();
> +        if bytes.len() == ::core::mem::size_of::<T>() && slice_ptr.is_aligned() {

Another small nit: this is not a macro, so you don't need to use the
`::` prefix here. Actually even `size_of::<T>()` seems to work.