Implement IterBytes for Rc<T>.

src/libstd/to_bytes.rs

@@ -18,6 +18,7 @@ use cast;
 use container::Container;
 use iter::Iterator;
 use option::{None, Option, Some};
+use rc::Rc;
 use str::{Str, StrSlice};
 use vec::{Vector, ImmutableVector};
 
@@ -325,6 +326,13 @@ impl<A:IterBytes> IterBytes for @mut A {
     }
 }
 
+impl<A:IterBytes> IterBytes for Rc<A> {
+    #[inline]
+    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
+        self.borrow().iter_bytes(lsb0, f)
+    }
+}
+
 impl<A:IterBytes> IterBytes for ~A {
     #[inline]
     fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {