Unsafe IntoByes for MaybeUninit<T>

[kartva]

When building a zerocopy network protocol, I want to be able to have a function with the following signature:

pub unsafe fn send(&mut self, fill: impl FnOnce(&mut MaybeUninit<Payload>)) {
        let mem = &mut packet[packet_start_offset..];
        fill(MaybeUninit::<Payload>::unsafe_mut_from_bytes(mem));
        ...
}

so that users can just write to the uninit data and thus write to the underlying byte buffer.

Are there any reasons for why this isn't possible / desirable?

[kartva]

I'm going to open this as a customer request issue instead; seems more appropriate.