Fallout in public-facing and semi-public-facing libs

src/libcore/raw.rs

@@ -18,7 +18,6 @@
 //!
 //! Their definition should always match the ABI defined in `rustc::back::abi`.
 
-use marker::Copy;
 use mem;
 
 /// The representation of a slice like `&[T]`.
@@ -63,6 +62,9 @@ pub struct Slice<T> {
 }
 
 impl<T> Copy for Slice<T> {}
+impl<T> Clone for Slice<T> {
+    fn clone(&self) -> Slice<T> { *self }
+}
 
 /// The representation of a trait object like `&SomeTrait`.
 ///
@@ -136,7 +138,7 @@ impl<T> Copy for Slice<T> {}
 /// assert_eq!(synthesized.bar(), 457);
 /// ```
 #[repr(C)]
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct TraitObject {
     pub data: *mut (),
     pub vtable: *mut (),