From ddd6ce04ecc2cd86c77f43b61563652b2a801fed Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 4 Mar 2008 18:57:14 -0500
Subject: [PATCH] BUG: Make sure at least one policy stack entry is created for
 every cmMakefile instance.

---
 Source/cmMakefile.cxx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index a7488bd83..9d109b66d 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -46,6 +46,9 @@ cmMakefile::cmMakefile()
 {
   this->DefinitionStack.push_back(DefinitionMap());
 
+  // Enter a policy level for this directory.
+  this->PushPolicy();
+
   // Setup the default include file regular expression (match everything).
   this->IncludeFileRegularExpression = "^.*$";
   // Setup the default include complaint regular expression (match nothing).
@@ -3314,7 +3317,7 @@ bool cmMakefile::PushPolicy()
 
 bool cmMakefile::PopPolicy()
 {
-  if (PolicyStack.size() == 0)
+  if (PolicyStack.size() == 1)
   {
     cmSystemTools::Error("Attempt to pop the policy stack past "
       "it's beginning.");