in benches/benches.rs [325:334]
fn slice_from_buffer_mut(buffer: RawBuffer, seed: Option<u8>) -> &'static mut [u8] {
unsafe {
let slice: &mut [u8] = from_raw_parts_mut(buffer.1, buffer.2);
if let Some(s) = seed {
slice.fill(s);
}
slice
}
}