Vendor things

third-party/vendor/zerocopy-derive/tests/util.rs

@@ -0,0 +1,20 @@
+// 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);