util.rs - mozsearch

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// Copyright 2019 The Fuchsia Authors

//

// Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0

// <LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0>, or the MIT

// license <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your option.

// This file may not be copied, modified, or distributed except according to

// those terms.

use zerocopy::{AsBytes, FromBytes, FromZeroes, KnownLayout};

/// A type that doesn't implement any zerocopy traits.

pub struct NotZerocopy<T = ()>(T);

/// A `u16` with alignment 2.

///

/// Though `u16` has alignment 2 on some platforms, it's not guaranteed. By

/// contrast, `AU16` is guaranteed to have alignment 2.

#[derive(KnownLayout, FromZeroes, FromBytes, AsBytes, Copy, Clone)]

#[repr(C, align(2))]

pub struct AU16(u16);