From 9fa4424b71c1e8a0616e82a34f406a109dffe685 Mon Sep 17 00:00:00 2001
From: nham <hamann.nick@gmail.com>
Date: Sun, 27 Jul 2014 12:37:32 -0400
Subject: [PATCH] Hash the length of the RingBuf before hashing elements

---
 src/libcollections/ringbuf.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libcollections/ringbuf.rs b/src/libcollections/ringbuf.rs
index 6b1670fbe855e..44b546f665688 100644
--- a/src/libcollections/ringbuf.rs
+++ b/src/libcollections/ringbuf.rs
@@ -460,6 +460,7 @@ impl<A: PartialOrd> PartialOrd for RingBuf<A> {
 
 impl<S: Writer, A: Hash<S>> Hash<S> for RingBuf<A> {
     fn hash(&self, state: &mut S) {
+        self.len().hash(state);
         for elt in self.iter() {
             elt.hash(state);
         }