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-rw-r--r--library/core/src/marker.rs3
1 files changed, 2 insertions, 1 deletions
diff --git a/library/core/src/marker.rs b/library/core/src/marker.rs
index dfc988c885e..62f35c1bfa2 100644
--- a/library/core/src/marker.rs
+++ b/library/core/src/marker.rs
@@ -292,9 +292,10 @@ marker_impls! {
 /// bound on type parameters:
 ///
 /// ```
+/// #[derive(Clone)]
 /// struct MyStruct<T>;
 ///
-/// impl<T: Copy> Copy for MyStruct<T> { }
+/// impl<T: Copy> Copy for MyStruct<T> { } 
 /// ```
 ///
 /// This isn't always desired. For example, shared references (`&T`) can be copied regardless of