From da559b2b362cfdac2879acc7711c5f6d7458d3db Mon Sep 17 00:00:00 2001
From: Jason Fager <jfager@gmail.com>
Date: Tue, 27 Aug 2013 21:41:10 -0400
Subject: [PATCH] Replace HashUtil w/ default method on Hash

---
 src/librustc/metadata/decoder.rs            | 1 -
 src/librustc/metadata/encoder.rs            | 1 -
 src/libstd/hash.rs                          | 7 -------
 src/test/run-pass/deriving-meta-multiple.rs | 2 --
 src/test/run-pass/deriving-meta.rs          | 2 --
 5 files changed, 13 deletions(-)

diff --git a/src/librustc/metadata/decoder.rs b/src/librustc/metadata/decoder.rs
index 3fdd1587c0d..117396bc44f 100644
--- a/src/librustc/metadata/decoder.rs
+++ b/src/librustc/metadata/decoder.rs
@@ -25,7 +25,6 @@ use middle::typeck;
 use middle::astencode::vtable_decoder_helpers;
 
 
-use std::hash::HashUtil;
 use std::u64;
 use std::io::WriterUtil;
 use std::io;
diff --git a/src/librustc/metadata/encoder.rs b/src/librustc/metadata/encoder.rs
index 21eee26620c..b4f57e76afd 100644
--- a/src/librustc/metadata/encoder.rs
+++ b/src/librustc/metadata/encoder.rs
@@ -21,7 +21,6 @@ use middle::typeck;
 use middle::astencode;
 use middle;
 
-use std::hash::HashUtil;
 use std::hashmap::{HashMap, HashSet};
 use std::io;
 use std::str;
diff --git a/src/libstd/hash.rs b/src/libstd/hash.rs
index 21b7ee321e8..6682a410979 100644
--- a/src/libstd/hash.rs
+++ b/src/libstd/hash.rs
@@ -59,14 +59,7 @@ pub trait Hash {
      * IterBytes trait, that feeds SipHash.
      */
     fn hash_keyed(&self, k0: u64, k1: u64) -> u64;
-}
 
-// When we have default methods, won't need this.
-pub trait HashUtil {
-    fn hash(&self) -> u64;
-}
-
-impl<A:Hash> HashUtil for A {
     #[inline]
     fn hash(&self) -> u64 { self.hash_keyed(0,0) }
 }
diff --git a/src/test/run-pass/deriving-meta-multiple.rs b/src/test/run-pass/deriving-meta-multiple.rs
index b17632e4ee7..85b8f55af67 100644
--- a/src/test/run-pass/deriving-meta-multiple.rs
+++ b/src/test/run-pass/deriving-meta-multiple.rs
@@ -19,8 +19,6 @@ struct Foo {
 }
 
 pub fn main() {
-    use std::hash::HashUtil; // necessary for IterBytes check
-
     let a = Foo {bar: 4, baz: -3};
 
     a == a;    // check for Eq impl w/o testing its correctness
diff --git a/src/test/run-pass/deriving-meta.rs b/src/test/run-pass/deriving-meta.rs
index 2fa77ee1635..04e0dbb6d0e 100644
--- a/src/test/run-pass/deriving-meta.rs
+++ b/src/test/run-pass/deriving-meta.rs
@@ -17,8 +17,6 @@ struct Foo {
 }
 
 pub fn main() {
-    use std::hash::HashUtil; // necessary for IterBytes check
-
     let a = Foo {bar: 4, baz: -3};
 
     a == a;    // check for Eq impl w/o testing its correctness