50 lines
2.0 KiB
Rust
50 lines
2.0 KiB
Rust
// Copyright 2024 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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include!("../include.rs");
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use util::{NotZerocopy, AU16};
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use zerocopy::try_transmute_mut;
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fn main() {
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// `try_transmute_mut` requires that the destination type implements
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// `IntoBytes`
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let src = &mut AU16(0);
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let dst_not_try_from_bytes: Result<&mut NotZerocopy, _> = try_transmute_mut!(src);
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//~[msrv, stable, nightly]^ ERROR: the trait bound `NotZerocopy: TryFromBytes` is not satisfied
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//~[msrv, stable, nightly]^^ ERROR: the trait bound `NotZerocopy: TryFromBytes` is not satisfied
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//~[msrv, stable, nightly]^^^ ERROR: the trait bound `NotZerocopy: TryFromBytes` is not satisfied
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//~[msrv, stable, nightly]^^^^ ERROR: the trait bound `NotZerocopy: IntoBytes` is not satisfied
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#[derive(zerocopy::IntoBytes)]
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#[repr(C)]
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struct SrcA;
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#[derive(zerocopy::TryFromBytes)]
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#[repr(C)]
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struct DstA;
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// `try_transmute_mut` requires that the source type implements `FromBytes`
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let src_not_from_bytes: &mut DstA = try_transmute_mut!(&mut SrcA).unwrap();
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//~[msrv, stable, nightly]^ ERROR: the trait bound `SrcA: FromBytes` is not satisfied
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//~[msrv, stable, nightly]^^ ERROR: the trait bound `DstA: IntoBytes` is not satisfied
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#[derive(zerocopy::FromBytes)]
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#[repr(C)]
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struct SrcB;
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#[derive(zerocopy::TryFromBytes)]
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#[repr(C)]
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struct DstB;
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// `try_transmute_mut` requires that the source type implements `IntoBytes`
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let src_not_from_bytes: &mut DstB = try_transmute_mut!(&mut SrcB).unwrap();
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//~[msrv, stable, nightly]^ ERROR: the trait bound `SrcB: IntoBytes` is not satisfied
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//~[msrv, stable, nightly]^^ ERROR: the trait bound `DstB: IntoBytes` is not satisfied
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}
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