From 97f50b6e7a1cbc4b5438dac4221c1a8df714e49d Mon Sep 17 00:00:00 2001
From: Bill Hoffman <bill.hoffman@kitware.com>
Date: Fri, 18 Jan 2002 07:04:51 -0500
Subject: BUG: fix null pointer read if def is not defined

---
 Source/cmIfCommand.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/cmIfCommand.cxx b/Source/cmIfCommand.cxx
index b86a754..37b3045 100644
--- a/Source/cmIfCommand.cxx
+++ b/Source/cmIfCommand.cxx
@@ -170,7 +170,7 @@ bool cmIfCommand::InitialPass(std::vector<std::string> const& args)
     cmRegularExpression regEntry(args[2].c_str());
     
     // check for black line or comment
-    if (!regEntry.find(def))
+    if (def && !regEntry.find(def))
       {
       f = new cmIfFunctionBlocker();
       }
-- 
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