From 2b5292bb4f1f5bcd0a00df25800a8f00f22069e0 Mon Sep 17 00:00:00 2001
From: jtsiomb <jtsiomb@7f0cb862-5218-0410-a997-914c9d46530a>
Date: Tue, 21 Jan 2014 10:52:53 +0000
Subject: [PATCH] Applied Bruce Merry's patch fixing bug #206 (segfault on
 shutdown in the AMD/ATI fglrx driver).

git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1640 7f0cb862-5218-0410-a997-914c9d46530a
---
 freeglut/freeglut/src/x11/fg_init_x11.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/freeglut/freeglut/src/x11/fg_init_x11.c b/freeglut/freeglut/src/x11/fg_init_x11.c
index 49aefe6..52c5d88 100644
--- a/freeglut/freeglut/src/x11/fg_init_x11.c
+++ b/freeglut/freeglut/src/x11/fg_init_x11.c
@@ -182,6 +182,14 @@ void fgPlatformInitialize( const char* displayName )
     if( !glXQueryExtension( fgDisplay.pDisplay.Display, NULL, NULL ) )
         fgError( "OpenGL GLX extension not supported by display '%s'",
             XDisplayName( displayName ) );
+
+    /* This forces AMD Catalyst drivers to initialize and register a shutdown
+     * function, which must be done before our own call to atexit to prevent
+     * a crash if glutMainLoop is not called or is not exited cleanly.
+     * (see bug #206)
+     */
+    glXQueryExtensionsString( fgDisplay.pDisplay.Display,
+        DefaultScreen( fgDisplay.pDisplay.Display ));
 #endif
 
     fgDisplay.pDisplay.Screen = DefaultScreen( fgDisplay.pDisplay.Display );