---

yaml
---
r: 147950
b: refs/heads/try2
c: e095889
h: refs/heads/master
v: v3

Author: pcwalton

[refs]

@@ -5,7 +5,7 @@ refs/heads/snap-stage3: 78a7676898d9f80ab540c6df5d4c9ce35bb50463
 refs/heads/try: 519addf6277dbafccbb4159db4b710c37eaa2ec5
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
-refs/heads/try2: aa93e6e664e61a0443b9a66a13f26e6a55205959
+refs/heads/try2: e095889e4edaa37ad78faa6394d0ac1d3650d64d
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try2/src/libstd/rt/task.rs

@@ -444,16 +444,20 @@ mod test {
 
     #[test]
     fn heap_cycles() {
+        use cell::RefCell;
         use option::{Option, Some, None};
 
         struct List {
-            next: Option<@mut List>,
+            next: Option<@RefCell<List>>,
         }
 
-        let a = @mut List { next: None };
-        let b = @mut List { next: Some(a) };
+        let a = @RefCell::new(List { next: None });
+        let b = @RefCell::new(List { next: Some(a) });
 
-        a.next = Some(b);
+        {
+            let mut a = a.borrow_mut();
+            a.get().next = Some(b);
+        }
     }
 
     #[test]