From 00b7fa3b9dc8b1c7db669c4ff07dc88764b0e356 Mon Sep 17 00:00:00 2001
From: Joel Dice <git@seibutsu.mailsnare.net>
Date: Fri, 7 Dec 2007 15:58:38 -0700
Subject: [PATCH] assert that fixed object has object mask before marking it

---
 src/heap.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/heap.cpp b/src/heap.cpp
index 45f0748c27..6dfa1a689d 100644
--- a/src/heap.cpp
+++ b/src/heap.cpp
@@ -1401,6 +1401,8 @@ class MyHeap: public Heap {
   virtual void mark(void* p, unsigned offset, unsigned count) {
     if (c.client->isFixed(p)) {
       Fixie* f = fixie(p);
+      assert(&c, f->hasMask);
+
       unsigned size = c.client->sizeInWords(p);
 
       for (unsigned i = 0; i < count; ++i) {