50 lines
1.7 KiB
Rust
50 lines
1.7 KiB
Rust
// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// This file tests repr(transparent)-related errors reported during typeck. Other errors
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// that are reported earlier and therefore preempt these are tested in:
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// - repr-transparent-other-reprs.rs
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// - repr-transparent-other-items.rs
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#![feature(repr_align, attr_literals)]
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use std::marker::PhantomData;
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#[repr(transparent)]
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struct NoFields; //~ ERROR needs exactly one non-zero-sized field
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#[repr(transparent)]
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struct ContainsOnlyZst(()); //~ ERROR needs exactly one non-zero-sized field
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#[repr(transparent)]
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struct ContainsOnlyZstArray([bool; 0]); //~ ERROR needs exactly one non-zero-sized field
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#[repr(transparent)]
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struct ContainsMultipleZst(PhantomData<*const i32>, NoFields);
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//~^ ERROR needs exactly one non-zero-sized field
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#[repr(transparent)]
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struct MultipleNonZst(u8, u8); //~ ERROR needs exactly one non-zero-sized field
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trait Mirror { type It: ?Sized; }
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impl<T: ?Sized> Mirror for T { type It = Self; }
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#[repr(transparent)]
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pub struct StructWithProjection(f32, <f32 as Mirror>::It);
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//~^ ERROR needs exactly one non-zero-sized field
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#[repr(transparent)]
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struct NontrivialAlignZst(u32, [u16; 0]); //~ ERROR alignment larger than 1
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#[repr(align(32))]
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struct ZstAlign32<T>(PhantomData<T>);
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#[repr(transparent)]
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struct GenericAlign<T>(ZstAlign32<T>, u32); //~ ERROR alignment larger than 1
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