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-rw-r--r--src/libcore/marker.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libcore/marker.rs b/src/libcore/marker.rs
index 1b866501b8e..38b07027b0e 100644
--- a/src/libcore/marker.rs
+++ b/src/libcore/marker.rs
@@ -270,6 +270,7 @@ macro_rules! impls{
 /// any methods, but instead is used to gate access to data.
 ///
 /// FIXME. Better documentation needed here!
+#[stable(feature = "rust1", since = "1.0.0")]
 pub trait MarkerTrait : PhantomFn<Self,Self> { }
 //                                    ~~~~~ <-- FIXME(#22806)?
 //