Reverted PhantomData in LinkedList, fixed PhantomData markers in Rc and Arc

src/liballoc/collections/linked_list.rs

@@ -39,7 +39,7 @@ pub struct LinkedList<T> {
     head: Option<NonNull<Node<T>>>,
     tail: Option<NonNull<Node<T>>>,
     len: usize,
-    marker: PhantomData<T>,
+    marker: PhantomData<Box<Node<T>>>,
 }
 
 struct Node<T> {
@@ -60,7 +60,7 @@ pub struct Iter<'a, T: 'a> {
     head: Option<NonNull<Node<T>>>,
     tail: Option<NonNull<Node<T>>>,
     len: usize,
-    marker: PhantomData<&'a T>,
+    marker: PhantomData<&'a Node<T>>,
 }
 
 #[stable(feature = "collection_debug", since = "1.17.0")]

src/liballoc/rc.rs

@@ -280,7 +280,7 @@ struct RcBox<T: ?Sized> {
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct Rc<T: ?Sized> {
     ptr: NonNull<RcBox<T>>,
-    phantom: PhantomData<T>,
+    phantom: PhantomData<RcBox<T>>,
 }
 
 #[stable(feature = "rust1", since = "1.0.0")]

src/liballoc/sync.rs

@@ -195,7 +195,7 @@ const MAX_REFCOUNT: usize = (isize::MAX) as usize;
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct Arc<T: ?Sized> {
     ptr: NonNull<ArcInner<T>>,
-    phantom: PhantomData<T>,
+    phantom: PhantomData<ArcInner<T>>,
 }
 
 #[stable(feature = "rust1", since = "1.0.0")]

src/libcore/cell.rs

@@ -137,9 +137,11 @@
 //! use std::cell::Cell;
 //! use std::ptr::NonNull;
 //! use std::intrinsics::abort;
+//! use std::marker::PhantomData;
 //!
 //! struct Rc<T: ?Sized> {
-//!     ptr: NonNull<RcBox<T>>
+//!     ptr: NonNull<RcBox<T>>,
+//!     phantom: PhantomData<RcBox<T>>,
 //! }
 //!
 //! struct RcBox<T: ?Sized> {