43 lines
1.3 KiB
Rust
43 lines
1.3 KiB
Rust
// 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)]
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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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fn main() {}
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