33 lines
924 B
Rust
33 lines
924 B
Rust
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//@ compile-flags:-g -Copt-level=0 -C panic=abort
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// Check that debug information exists for structures containing loops (cyclic references).
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// Previously it may incorrectly prune member information during recursive type inference check.
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "Arc<debuginfo_cyclic_structure::Inner<alloc::sync::Arc<debuginfo_cyclic_structure::Handle{{.*}}elements: ![[FIELDS:[0-9]+]]
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// CHECK: ![[FIELDS]] = !{!{{.*}}}
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// CHECK-NOT: ![[FIELDS]] = !{}
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#![crate_type = "lib"]
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use std::mem::MaybeUninit;
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use std::sync::Arc;
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struct Inner<T> {
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buffer: Box<MaybeUninit<T>>,
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}
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struct Shared {
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shared: Arc<Inner<Arc<Handle>>>,
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}
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struct Handle {
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shared: Shared,
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}
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struct Core {
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inner: Arc<Inner<Arc<Handle>>>,
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}
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#[no_mangle]
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extern "C" fn test() {
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let с = Core { inner: Arc::new(Inner { buffer: Box::new(MaybeUninit::uninit()) }) };
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std::hint::black_box(с);
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}
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