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// Copyright 2022 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#![allow(warnings)]
#[macro_use]
mod util;
use std::{marker::PhantomData, option::IntoIter};
use {
static_assertions::assert_impl_all,
zerocopy::{DstLayout, KnownLayout},
};
use crate::util::AU16;
#[derive(KnownLayout)]
struct Zst;
assert_impl_all!(Zst: KnownLayout);
#[derive(KnownLayout)]
struct One {
a: bool,
}
assert_impl_all!(One: KnownLayout);
#[derive(KnownLayout)]
struct Two {
a: bool,
b: Zst,
}
assert_impl_all!(Two: KnownLayout);
#[derive(KnownLayout)]
struct TypeParams<'a, T, I: Iterator> {
a: I::Item,
b: u8,
c: PhantomData<&'a [u8]>,
d: PhantomData<&'static str>,
e: PhantomData<String>,
f: T,
}
assert_impl_all!(TypeParams<'static, (), IntoIter<()>>: KnownLayout);
assert_impl_all!(TypeParams<'static, AU16, IntoIter<()>>: KnownLayout);
// Deriving `KnownLayout` should work if the struct has bounded parameters.
#[derive(KnownLayout)]
#[repr(C)]
struct WithParams<'a: 'b, 'b: 'a, const N: usize, T: 'a + 'b + KnownLayout>(
[T; N],
PhantomData<&'a &'b ()>,
)
where
'a: 'b,
'b: 'a,
T: 'a + 'b + KnownLayout;
assert_impl_all!(WithParams<'static, 'static, 42, u8>: KnownLayout);