---

yaml
---
r: 64319
b: refs/heads/snap-stage3
c: 9ccf443
h: refs/heads/master
i:
  64317: 89ebe30
  64315: a31c1c4
  64311: 7a57ecf
  64303: 587866b
  64287: 7c9dcb5
  64255: 1bdb44a
v: v3

Author: blake2-ppc

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: 2d28d645422c1617be58c8ca7ad9a457264ca850
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
-refs/heads/snap-stage3: 0cb1ac0f9f7bf98ea8ab5ccbd6ef319decc41a72
+refs/heads/snap-stage3: 9ccf443088c56bab91369c6633cfeb39de66d6de
 refs/heads/try: 7b78b52e602bb3ea8174f9b2006bff3315f03ef9
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b

branches/snap-stage3/src/libextra/ringbuf.rs

@@ -214,6 +214,11 @@ macro_rules! iterator {
                 self.nelts -= 1;
                 Some(self.elts[raw_index]. $getter ())
             }
+
+            #[inline]
+            fn size_hint(&self) -> (uint, Option<uint>) {
+                (self.nelts, Some(self.nelts))
+            }
         }
     }
 }
@@ -578,6 +583,7 @@ mod tests {
     fn test_iter() {
         let mut d = RingBuf::new();
         assert_eq!(d.iter().next(), None);
+        assert_eq!(d.iter().size_hint(), (0, Some(0)));
 
         for int::range(0,5) |i| {
             d.push_back(i);
@@ -588,6 +594,15 @@ mod tests {
             d.push_front(i);
         }
         assert_eq!(d.iter().collect::<~[&int]>(), ~[&8,&7,&6,&0,&1,&2,&3,&4]);
+
+        let mut it = d.iter();
+        let mut len = d.len();
+        loop {
+            match it.next() {
+                None => break,
+                _ => { len -= 1; assert_eq!(it.size_hint(), (len, Some(len))) }
+            }
+        }
     }
 
     #[test]