From 99d6807ee009b0289d5a1ae46385d251e4f0da64 Mon Sep 17 00:00:00 2001
From: Brian Anderson <banderson@mozilla.com>
Date: Mon, 4 Jun 2012 22:45:46 -0700
Subject: [PATCH] rt: Unique allocations have -1 ref count

---
 src/rt/rust_upcall.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/rt/rust_upcall.cpp b/src/rt/rust_upcall.cpp
index 21df231aee7..7a22d5016f9 100644
--- a/src/rt/rust_upcall.cpp
+++ b/src/rt/rust_upcall.cpp
@@ -168,7 +168,10 @@ exchange_malloc(rust_task *task, type_desc *td, uintptr_t size) {
     void *p = task->kernel->malloc(total_size, "exchange malloc");
 
     rust_opaque_box *header = static_cast<rust_opaque_box*>(p);
+    header->ref_count = -1; // This is not ref counted
     header->td = td;
+    header->prev = 0;
+    header->next = 0;
 
     memset(&header[1], '\0', body_size);