From 7c369ee7337cee50f8ef05b9d2833e2aa30d802e Mon Sep 17 00:00:00 2001
From: blake2-ppc <blake2-ppc>
Date: Sun, 1 Sep 2013 18:20:24 +0200
Subject: std/extra: Add ExactSize for Bitv, DList, RingBuf, Option iterators

---
 src/libstd/option.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/libstd')

diff --git a/src/libstd/option.rs b/src/libstd/option.rs
index f99a595f2eb..dd66630187d 100644
--- a/src/libstd/option.rs
+++ b/src/libstd/option.rs
@@ -46,7 +46,7 @@ use cmp::{Eq,Ord};
 use util;
 use num::Zero;
 use iterator;
-use iterator::{Iterator, DoubleEndedIterator};
+use iterator::{Iterator, DoubleEndedIterator, ExactSize};
 use str::{StrSlice, OwnedStr};
 use to_str::ToStr;
 use clone::DeepClone;
@@ -402,6 +402,8 @@ impl<A> DoubleEndedIterator<A> for OptionIterator<A> {
     }
 }
 
+impl<A> ExactSize<A> for OptionIterator<A> {}
+
 #[cfg(test)]
 mod tests {
     use super::*;
-- 
cgit 1.4.1-3-g733a5