1 files changed, 47 insertions, 0 deletions
diff --git a/tests/codegen-llvm/enum/enum-debug-niche-2.rs b/tests/codegen-llvm/enum/enum-debug-niche-2.rs
new file mode 100644
index 00000000000..80a4081f15b
--- /dev/null
+++ b/tests/codegen-llvm/enum/enum-debug-niche-2.rs
@@ -0,0 +1,47 @@
+//! This tests that optimized enum debug info accurately reflects the enum layout.
+//! This is ignored for the fallback mode on MSVC due to problems with PDB.
+//!
+//@ compile-flags: -g -C no-prepopulate-passes
+//@ ignore-msvc
+//
+// CHECK: {{.*}}DICompositeType{{.*}}tag: DW_TAG_variant_part,{{.*}}size: 32,{{.*}}
+// CHECK: {{.*}}DIDerivedType{{.*}}tag: DW_TAG_member,{{.*}}name: "Placeholder",{{.*}}extraData: i32 -1{{[,)].*}}
+// CHECK: {{.*}}DIDerivedType{{.*}}tag: DW_TAG_member,{{.*}}name: "Error",{{.*}}extraData: i32 0{{[,)].*}}
+#![feature(never_type)]
+
+#[derive(Copy, Clone)]
+pub struct Entity {
+    private: std::num::NonZero<u32>,
+}
+
+#[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;
+}