2 files changed, 2 insertions, 0 deletions
diff --git a/src/liballoc/rc.rs b/src/liballoc/rc.rs
index 9d951691a34..915b8e7787e 100644
--- a/src/liballoc/rc.rs
+++ b/src/liballoc/rc.rs
@@ -282,6 +282,7 @@ struct RcBox<T: ?Sized> {
 /// type `T`.
 ///
 /// [get_mut]: #method.get_mut
+#[cfg_attr(all(not(stage0), not(test)), lang = "rc")]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct Rc<T: ?Sized> {
     ptr: NonNull<RcBox<T>>,
diff --git a/src/liballoc/sync.rs b/src/liballoc/sync.rs
index 116393bdad1..9e245fbd7bb 100644
--- a/src/liballoc/sync.rs
+++ b/src/liballoc/sync.rs
@@ -199,6 +199,7 @@ const MAX_REFCOUNT: usize = (isize::MAX) as usize;
 /// counting in general.
 ///
 /// [rc_examples]: ../../std/rc/index.html#examples
+#[cfg_attr(all(not(stage0), not(test)), lang = "arc")]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct Arc<T: ?Sized> {
     ptr: NonNull<ArcInner<T>>,