From c0cd47a4029ebd903487ffca78a48a04f2de2fa4 Mon Sep 17 00:00:00 2001
From: Bill Hoffman <bill.hoffman@kitware.com>
Date: Fri, 18 Jan 2002 16:45:42 -0500
Subject: [PATCH] fix if logic for null defs

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

diff --git a/Source/cmIfCommand.cxx b/Source/cmIfCommand.cxx
index 37b3045513..874c77b597 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 (def && !regEntry.find(def))
+    if (!def || !regEntry.find(def))
       {
       f = new cmIfFunctionBlocker();
       }