From: trevor_hansen <trevor_hansen@e59a4935-1847-0410-ae03-e826735625c1>
Date: Sat, 26 Feb 2011 03:56:39 +0000 (+0000)
Subject: Bugfix. Terrible! Another fix. STP r1149 to here will sometimes return the wrong... 
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=dbed506725ec031b07c565f48448071f2d6c9ff0;p=francis%2Fstp.git

Bugfix. Terrible! Another fix. STP r1149 to here will sometimes return the wrong answer.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1170 e59a4935-1847-0410-ae03-e826735625c1
---

diff --git a/src/simplifier/FindPureLiterals.h b/src/simplifier/FindPureLiterals.h
index 61fd505..d5c19cb 100644
--- a/src/simplifier/FindPureLiterals.h
+++ b/src/simplifier/FindPureLiterals.h
@@ -94,11 +94,10 @@ public:
     if (it != nodeToPolarity.end())
       {
         int lookupPolarity = it->second;
-        if ((polarity & lookupPolarity) !=0 )
+        if ((polarity | lookupPolarity) == lookupPolarity )
           return; // already traversed.
 
-        lookupPolarity |= polarity;
-        it->second = lookupPolarity;
+        it->second |= polarity;
       }
     else
       {