AtomicBuffer still exposes UB to safe code

[dtolnay]

The repro in #14 no longer compiles on current master but the following is basically equivalent:

use aeron_rs::concurrent::atomic_buffer::{AlignedBuffer, AtomicBuffer};

fn main() {
    AtomicBuffer::from_aligned(&AlignedBuffer { ptr: 0xdeadbeefusize as _, len: 100 })
        .get_bytes(0, 0xcafebabeusize as _, 100);
}

Segmentation fault (core dumped)

In general it is unsound for a safe API to result in UB.

[denisxor]

In general it is unsound for a safe API to result in UB.
I fully agree with that! :-)
Can you propose the solution? May be you could do the fix and present is as PR? That will be very helpful!

[M0dEx]

I am quite new to this codebase, but couldn't this be solved by using dest: &mut [u8] instead?