From fbef948254ab527b88a7618e72dd148c5f3416ef Mon Sep 17 00:00:00 2001
From: Richard Roberts <richard.jw.roberts@gmail.com>
Date: Mon, 8 Feb 2010 22:22:38 +0000
Subject: [PATCH] Bug fix in replace()

---
 cpp/FactorGraph-inl.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cpp/FactorGraph-inl.h b/cpp/FactorGraph-inl.h
index f53c9970e..609e21944 100644
--- a/cpp/FactorGraph-inl.h
+++ b/cpp/FactorGraph-inl.h
@@ -118,7 +118,7 @@ void FactorGraph<Factor>::replace(int index, sharedFactor factor) {
 
   if(factors_[index] != NULL) {
     // Remove this factor from its variables' index lists
-    BOOST_FOREACH(const Symbol& key, factor->keys()) {
+    BOOST_FOREACH(const Symbol& key, factors_[index]->keys()) {
     	indices_.at(key).remove(index);
     }
   }