From 6d3ba1ed2753de237b467da50bcd5630f758456a Mon Sep 17 00:00:00 2001
From: Andy Cedilnik <andy.cedilnik@kitware.com>
Date: Tue, 20 Jul 2004 11:09:58 -0400
Subject: [PATCH] BUG: If source and destination is the same file, then do not
 copy file always

---
 Source/kwsys/SystemTools.cxx | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Source/kwsys/SystemTools.cxx b/Source/kwsys/SystemTools.cxx
index c13ffc2db..82c6525aa 100644
--- a/Source/kwsys/SystemTools.cxx
+++ b/Source/kwsys/SystemTools.cxx
@@ -910,6 +910,11 @@ bool SystemTools::FilesDiffer(const char* source,
  */
 bool SystemTools::CopyFileAlways(const char* source, const char* destination)
 {
+  // If files are the same do not copy
+  if ( SystemTools::SameFile(source, destination) )
+    {
+    return true;
+    }
   const int bufferSize = 4096;
   char buffer[bufferSize];