From 05cb0f4daf6941482784eb06c549c5c63a9d895b Mon Sep 17 00:00:00 2001
From: Ben Boeckel <ben.boeckel@kitware.com>
Date: Thu, 16 Sep 2010 16:05:59 -0400
Subject: [PATCH] Check for unused variables in the dtor

---
 Source/cmMakefile.cxx | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 844b3022f..774612a95 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -178,6 +178,15 @@ bool cmMakefile::NeedCacheCompatibility(int major, int minor)
 
 cmMakefile::~cmMakefile()
 {
+  std::set<cmStdString> usage = this->Internal->VarUsageStack.top();
+  std::set<cmStdString>::const_iterator it = usage.begin();
+  for (; it != usage.end(); ++it)
+    {
+    if (!this->VariableUsed(it->c_str()))
+      {
+      this->CheckForUnused("out of scope", it->c_str());
+      }
+    }
   for(std::vector<cmInstallGenerator*>::iterator
         i = this->InstallGenerators.begin();
       i != this->InstallGenerators.end(); ++i)