---

yaml
---
r: 32439
b: refs/heads/dist-snap
c: 88f5ab3
h: refs/heads/master
i:
  32437: 79bdce1
  32435: 21446cf
  32431: e0f5a2a
v: v3

Author: Elliott Slaughter

[refs]

@@ -7,6 +7,6 @@ refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
 refs/heads/try2: d0c6ce338884ee21843f4b40bf6bf18d222ce5df
 refs/heads/incoming: d9317a174e434d4c99fc1a37fd7dc0d2f5328d37
-refs/heads/dist-snap: 3405c548e8f65c9955dfc89188f3cd9db4432bba
+refs/heads/dist-snap: 88f5ab31635855595e4053cb64153e6bb7ec622b
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/dist-snap/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 {