1 files changed, 41 insertions, 0 deletions
diff --git a/gcc/testsuite/rust/compile/derive-debug1.rs b/gcc/testsuite/rust/compile/derive-debug1.rs
new file mode 100644
index 0000000..2596a37
--- /dev/null
+++ b/gcc/testsuite/rust/compile/derive-debug1.rs
@@ -0,0 +1,41 @@
+#[lang = "sized"]
+trait Sized {}
+
+mod core {
+    pub mod result {
+        pub enum Result<T, E> {
+            #[lang = "Ok"]
+            Ok(T),
+            #[lang = "Err"]
+            Err(E),
+        }
+    }
+
+    mod fmt {
+        struct Formatter; // { dg-warning "is never constructed" }
+        struct Error; // { dg-warning "is never constructed" }
+
+        type Result = core::result::Result<(), Error>;
+
+        trait Debug {
+            fn fmt(&self, fmt: &mut Formatter) -> Result;
+        }
+    }
+}
+
+#[derive(Debug)] // { dg-warning "unused name" }
+// { dg-warning "stub implementation" "" { target *-*-* } .-1 }
+struct Foo { a: i32, b: i64 } // { dg-warning "is never constructed" }
+
+#[derive(Debug)] // { dg-warning "unused name" }
+// { dg-warning "stub implementation" "" { target *-*-* } .-1 }
+struct Bar(i32, i32); // { dg-warning "is never constructed" }
+
+#[derive(Debug)] // { dg-warning "unused name" }
+// { dg-warning "stub implementation" "" { target *-*-* } .-1 }
+enum Baz {
+    A,
+    B(i32),
+    C { a: i32 }
+}
+