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// Copyright 2023 The Fuchsia Authors
//
// Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
// This file may not be copied, modified, or distributed except according to
// those terms.
extern crate zerocopy;
use zerocopy::KnownLayout;
fn main() {}
// These tests cause errors which are generated by a later compilation pass than
// the other errors we generate, and so if they're compiled in the same file,
// the compiler will never get to that pass, and so we won't get the errors.
//
// KnownLayout errors
//
fn assert_kl<T: ?Sized + KnownLayout>(_: &T) {}
// | `repr(C)`? | generic? | `KnownLayout`? | `Sized`? | Type Name |
// | N | Y | N | N | KL04 |
#[derive(KnownLayout)]
struct KL04<T: ?Sized>(u8, T);
fn test_kl04<T: ?Sized>(kl: &KL04<T>) {
assert_kl(kl);
}
// | `repr(C)`? | generic? | `KnownLayout`? | `Sized`? | Type Name |
// | N | Y | Y | N | KL06 |
#[derive(KnownLayout)]
struct KL06<T: ?Sized + KnownLayout>(u8, T);
fn test_kl06<T: ?Sized + KnownLayout>(kl: &KL06<T>) {
assert_kl(kl);
}
// | `repr(C)`? | generic? | `KnownLayout`? | `Sized`? | Type Name |
// | Y | Y | N | N | KL12 |
#[derive(KnownLayout)]
#[repr(C)]
struct KL12<T: ?Sized>(u8, T);
fn test_kl12<T: ?Sized>(kl: &KL12<T>) {
assert_kl(kl)
}
// | `repr(C)`? | generic? | `KnownLayout`? | `Sized`? | Type Name |
// | Y | Y | N | Y | KL13 |
#[derive(KnownLayout)]
#[repr(C)]
struct KL13<T>(u8, T);
fn test_kl13<T>(t: T) -> impl KnownLayout {
KL13(0u8, t)
}