From ef601e6adddbfe4e7187131e9ebb1dce5f654a85 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Tue, 3 Jun 2008 11:31:42 +0000
Subject: [PATCH] From Marco Lehmann and Robert Osfield, this fix was
 implemented by Robert but is based on suggested fix from Marco for fixing a
 crash due to lack of thread safety in std::ofstream("/dev/null");  The fix is
 to use a custom stream buffer that just discards all data.  The
 implementation is also twice as fast as the old /dev/null based approach.

---
 src/osg/Notify.cpp | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/osg/Notify.cpp b/src/osg/Notify.cpp
index 75a37c452..7351f7527 100644
--- a/src/osg/Notify.cpp
+++ b/src/osg/Notify.cpp
@@ -83,16 +83,20 @@ bool osg::isNotifyEnabled( osg::NotifySeverity severity )
     return severity<=g_NotifyLevel;
 }
 
-#if defined(WIN32) && !(defined(__CYGWIN__) || defined(__MINGW32__))
-const char* NullStreamName = "nul";
-#else
-const char* NullStreamName = "/dev/null";
-#endif
+class NullStreamBuffer : public std::streambuf
+{
+    private:
+    
+        virtual streamsize xsputn (const char_type*, streamsize n)
+        {
+            return n;
+        }
+};
 
 std::ostream& osg::notify(const osg::NotifySeverity severity)
 {
     // set up global notify null stream for inline notify
-    static std::ofstream s_NotifyNulStream(NullStreamName);
+    static std::ostream s_NotifyNulStream(new NullStreamBuffer());
 
     static bool initialized = false;
     if (!initialized)