From 00cddb068c4cb17a91cca646103e0fba8c0a8077 Mon Sep 17 00:00:00 2001
From: Jorge Aparicio <japaricious@gmail.com>
Date: Tue, 20 Jan 2015 18:15:28 -0500
Subject: [PATCH] also forward Iterator::size_hint()

---
 src/liballoc/boxed.rs | 4 ++++
 src/libcore/iter.rs   | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/src/liballoc/boxed.rs b/src/liballoc/boxed.rs
index 89de2c953e4..7965c00a365 100644
--- a/src/liballoc/boxed.rs
+++ b/src/liballoc/boxed.rs
@@ -194,6 +194,10 @@ impl<'a, T> Iterator for Box<Iterator<Item=T> + 'a> {
     fn next(&mut self) -> Option<T> {
         (**self).next()
     }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        (**self).size_hint()
+    }
 }
 
 #[cfg(test)]
diff --git a/src/libcore/iter.rs b/src/libcore/iter.rs
index 3d51f75d9b3..2a21ceef7a1 100644
--- a/src/libcore/iter.rs
+++ b/src/libcore/iter.rs
@@ -107,6 +107,10 @@ impl<'a, T> Iterator for &'a mut (Iterator<Item=T> + 'a) {
     fn next(&mut self) -> Option<T> {
         (**self).next()
     }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        (**self).size_hint()
+    }
 }
 
 /// Conversion from an `Iterator`
-- 
2.44.0