71 lines
2.4 KiB
Rust
71 lines
2.4 KiB
Rust
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// Copyright 2023 The Fuchsia Authors
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//
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// Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
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// <LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0>, or the MIT
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// license <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your option.
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// This file may not be copied, modified, or distributed except according to
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// those terms.
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extern crate zerocopy_renamed;
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use zerocopy_renamed::KnownLayout;
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fn main() {}
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// These tests cause errors which are generated by a later compilation pass than
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// the other errors we generate, and so if they're compiled in the same file,
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// the compiler will never get to that pass, and so we won't get the errors.
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//
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// KnownLayout errors
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//
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fn assert_kl<T: ?Sized + KnownLayout>(_: &T) {}
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// -| `repr(C)`? | generic? | `KnownLayout`? | `Sized`? | Type Name |
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// -| N | Y | N | N | KL04 |
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#[derive(KnownLayout)]
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#[zerocopy(crate = "zerocopy_renamed")]
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struct KL04<T: ?Sized>(u8, T);
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fn test_kl04<T: ?Sized>(kl: &KL04<T>) {
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assert_kl(kl);
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//~[msrv, stable, nightly]^ ERROR: the size for values of type `T` cannot be known at compilation time
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}
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// -| `repr(C)`? | generic? | `KnownLayout`? | `Sized`? | Type Name |
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// -| N | Y | Y | N | KL06 |
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#[derive(KnownLayout)]
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#[zerocopy(crate = "zerocopy_renamed")]
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struct KL06<T: ?Sized + KnownLayout>(u8, T);
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fn test_kl06<T: ?Sized + KnownLayout>(kl: &KL06<T>) {
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assert_kl(kl);
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//~[msrv, stable, nightly]^ ERROR: the size for values of type `T` cannot be known at compilation time
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}
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// -| `repr(C)`? | generic? | `KnownLayout`? | `Sized`? | Type Name |
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// -| Y | Y | N | N | KL12 |
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#[derive(KnownLayout)]
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#[zerocopy(crate = "zerocopy_renamed")]
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#[repr(C)]
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struct KL12<T: ?Sized>(u8, T);
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fn test_kl12<T: ?Sized>(kl: &KL12<T>) {
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assert_kl(kl)
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//~[msrv]^ ERROR: the trait bound `T: KnownLayout` is not satisfied
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//~[stable, nightly]^^ ERROR: the trait bound `KL12<T>: KnownLayout` is not satisfied
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}
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// -| `repr(C)`? | generic? | `KnownLayout`? | `Sized`? | Type Name |
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// -| Y | Y | N | Y | KL13 |
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#[derive(KnownLayout)]
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#[zerocopy(crate = "zerocopy_renamed")]
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#[repr(C)]
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struct KL13<T>(u8, T);
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fn test_kl13<T>(t: T) -> impl KnownLayout {
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//~[msrv, stable, nightly]^ ERROR: the trait bound `T: KnownLayout` is not satisfied
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KL13(0u8, t)
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}
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