mirror of https://github.com/rust-lang/rust
73 lines
1.7 KiB
Rust
73 lines
1.7 KiB
Rust
#![feature(rustc_attrs)]
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// Regression test for #56877. We want to ensure that the presence of
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// `PhantomData` does not prevent `Bar` from being considered a
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// homogeneous aggregate.
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#[repr(C)]
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pub struct BaseCase {
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pub a: f32,
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pub b: f32,
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}
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#[repr(C)]
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pub struct WithPhantomData {
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pub a: f32,
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pub b: f32,
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pub _unit: std::marker::PhantomData<()>,
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}
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pub struct EmptyRustStruct {}
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#[repr(C)]
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pub struct WithEmptyRustStruct {
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pub a: f32,
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pub b: f32,
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pub _unit: EmptyRustStruct,
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}
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pub struct TransitivelyEmptyRustStruct {
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field: EmptyRustStruct,
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array: [u32; 0],
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}
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#[repr(C)]
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pub struct WithTransitivelyEmptyRustStruct {
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pub a: f32,
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pub b: f32,
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pub _unit: TransitivelyEmptyRustStruct,
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}
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pub enum EmptyRustEnum {
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Dummy,
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}
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#[repr(C)]
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pub struct WithEmptyRustEnum {
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pub a: f32,
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pub b: f32,
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pub _unit: EmptyRustEnum,
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}
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#[rustc_layout(homogeneous_aggregate)]
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pub type Test1 = BaseCase;
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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 = WithPhantomData;
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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 = WithEmptyRustStruct;
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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 = WithTransitivelyEmptyRustStruct;
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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 Test5 = WithEmptyRustEnum;
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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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