45 lines
1.3 KiB
Rust
45 lines
1.3 KiB
Rust
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#![feature(rustc_attrs)]
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#![feature(transparent_unions)]
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use std::marker::PhantomData;
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// Regression test for #115664. We want to ensure that `repr(transparent)` wrappers do not affect
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// the result of `homogeneous_aggregate`.
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type Tuple = (f32, f32, f32);
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struct Zst;
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#[repr(transparent)]
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struct Wrapper1<T>(T);
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#[repr(transparent)]
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struct Wrapper2<T>((), Zst, T);
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#[repr(transparent)]
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struct Wrapper3<T>(T, [u8; 0], PhantomData<u64>);
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#[repr(transparent)]
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union WrapperUnion<T: Copy> {
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nothing: (),
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something: T,
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}
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#[rustc_layout(homogeneous_aggregate)]
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pub type Test0 = Tuple;
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//~^ ERROR homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
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#[rustc_layout(homogeneous_aggregate)]
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pub type Test1 = Wrapper1<Tuple>;
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//~^ ERROR homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
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#[rustc_layout(homogeneous_aggregate)]
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pub type Test2 = Wrapper2<Tuple>;
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//~^ ERROR homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
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#[rustc_layout(homogeneous_aggregate)]
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pub type Test3 = Wrapper3<Tuple>;
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//~^ ERROR homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
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#[rustc_layout(homogeneous_aggregate)]
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pub type Test4 = WrapperUnion<Tuple>;
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//~^ ERROR homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
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fn main() {}
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