From 6f2a1c946744dd6c1de7a1c556cb1333592dec62 Mon Sep 17 00:00:00 2001
From: Niko Matsakis <niko@alum.mit.edu>
Date: Thu, 12 Feb 2015 12:46:40 -0500
Subject: [PATCH] Fallout: add phantomdata to hash

---
 src/libstd/collections/hash/state.rs | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/libstd/collections/hash/state.rs b/src/libstd/collections/hash/state.rs
index 79e01304fb8..7e6dd45b51e 100644
--- a/src/libstd/collections/hash/state.rs
+++ b/src/libstd/collections/hash/state.rs
@@ -11,6 +11,7 @@
 use clone::Clone;
 use default::Default;
 use hash;
+use marker;
 
 /// A trait representing stateful hashes which can be used to hash keys in a
 /// `HashMap`.
@@ -37,7 +38,7 @@ pub trait HashState {
 ///
 /// This struct has is 0-sized and does not need construction.
 #[unstable(feature = "std_misc", reason = "hasher stuff is unclear")]
-pub struct DefaultState<H>;
+pub struct DefaultState<H>(marker::PhantomData<H>);
 
 impl<H: Default + hash::Hasher> HashState for DefaultState<H> {
     type Hasher = H;
@@ -45,9 +46,9 @@ impl<H: Default + hash::Hasher> HashState for DefaultState<H> {
 }
 
 impl<H> Clone for DefaultState<H> {
-    fn clone(&self) -> DefaultState<H> { DefaultState }
+    fn clone(&self) -> DefaultState<H> { DefaultState(marker::PhantomData) }
 }
 
 impl<H> Default for DefaultState<H> {
-    fn default() -> DefaultState<H> { DefaultState }
+    fn default() -> DefaultState<H> { DefaultState(marker::PhantomData) }
 }