---

yaml
---
r: 23777
b: refs/heads/master
c: 88f5ab3
h: refs/heads/master
i:
  23775: c4839f7
v: v3

Author: Elliott Slaughter

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: 3405c548e8f65c9955dfc89188f3cd9db4432bba
+refs/heads/master: 88f5ab31635855595e4053cb64153e6bb7ec622b
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: cd6f24f9d14ac90d167386a56e7a6ac1f0318195
 refs/heads/try: ffbe0e0e00374358b789b0037bcb3a577cd218be

trunk/src/libcore/gc.rs

@@ -113,7 +113,8 @@ unsafe fn walk_gc_roots(mem: Memory, visitor: Visitor) {
                             let refcount = **root;
                             if mem | task_local_heap != 0 && refcount != -1 {
                                 if !visitor(root, tydesc) { return; }
-                            } else if mem | exchange_heap != 0 {
+                            } else if mem | exchange_heap != 0
+                                && refcount == -1 {
                                 if !visitor(root, tydesc) { return; }
                             }
                         } else {