Reviewer change

src/liballoc/rc.rs

@@ -722,11 +722,7 @@ impl<T> Clone for Weak<T> {
 #[experimental = "Show is experimental."]
 impl<T: fmt::Show> fmt::Show for Weak<T> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        if self.strong() == 0 {
-            write!(f, "NULL")
-        } else {
-            (*self._ptr).fmt(f)
-        }
+        write!(f, "(Weak)")
     }
 }