From 77feab3fa1dc1d547f725c3e1e01c0fd15a9e069 Mon Sep 17 00:00:00 2001
From: trevor_hansen <trevor_hansen@e59a4935-1847-0410-ae03-e826735625c1>
Date: Wed, 7 Jul 2010 13:33:08 +0000
Subject: [PATCH] Bugfix. Remove a null pointer reference.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@936 e59a4935-1847-0410-ae03-e826735625c1
---
 src/to-sat/AIG/ToSATAIG.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/to-sat/AIG/ToSATAIG.cpp b/src/to-sat/AIG/ToSATAIG.cpp
index 88c21df..3adf1e9 100644
--- a/src/to-sat/AIG/ToSATAIG.cpp
+++ b/src/to-sat/AIG/ToSATAIG.cpp
@@ -41,7 +41,8 @@ namespace BEEV
       */
 
       //Clear out all the constant bit stuff before sending the SAT.
-      cb->clearTables();
+      if (cb != NULL)
+    	  cb->clearTables();
 
       bm->GetRunTimes()->start(RunTimes::SendingToSAT);
 
-- 
2.47.3