| // This test depends on a patch that was committed to upstream LLVM |
| // before 7.0, then backported to the Rust LLVM fork. It tests that |
| // optimized enum debug info accurately reflects the enum layout. |
| |
| // ignore-tidy-linelength |
| // ignore-windows |
| // min-system-llvm-version 8.0 |
| |
| // compile-flags: -g -C no-prepopulate-passes |
| |
| // CHECK: {{.*}}DICompositeType{{.*}}tag: DW_TAG_variant_part,{{.*}}size: 32,{{.*}} |
| // CHECK: {{.*}}DIDerivedType{{.*}}tag: DW_TAG_member,{{.*}}name: "Placeholder",{{.*}}extraData: i64 4294967295{{[,)].*}} |
| // CHECK: {{.*}}DIDerivedType{{.*}}tag: DW_TAG_member,{{.*}}name: "Error",{{.*}}extraData: i64 0{{[,)].*}} |
| |
| #![feature(never_type)] |
| |
| #[derive(Copy, Clone)] |
| pub struct Entity { |
| private: std::num::NonZeroU32, |
| } |
| |
| #[derive(Copy, Clone, PartialEq, Eq)] |
| pub struct Declaration; |
| |
| impl TypeFamily for Declaration { |
| type Base = Base; |
| type Placeholder = !; |
| |
| fn intern_base_data(_: BaseKind<Self>) {} |
| } |
| |
| #[derive(Copy, Clone)] |
| pub struct Base; |
| |
| pub trait TypeFamily: Copy + 'static { |
| type Base: Copy; |
| type Placeholder: Copy; |
| |
| fn intern_base_data(_: BaseKind<Self>); |
| } |
| |
| #[derive(Copy, Clone)] |
| pub enum BaseKind<F: TypeFamily> { |
| Named(Entity), |
| Placeholder(F::Placeholder), |
| Error, |
| } |
| |
| pub fn main() { |
| let x = BaseKind::Error::<Declaration>; |
| let y = 7; |
| } |