From cb2bc4152c52bf9beb7c78dcc4ecc0cfd86e2ecd Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Sat, 10 Oct 2009 10:10:36 +0000
Subject: [PATCH] Debian patch: 310_segfault_noGLX.diff

--HG--
branch : SDL-1.2
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/branches/SDL-1.2%404034
---
 src/video/x11/SDL_x11gl.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/video/x11/SDL_x11gl.c b/src/video/x11/SDL_x11gl.c
index a2aa54dfb..a3190ddd8 100644
--- a/src/video/x11/SDL_x11gl.c
+++ b/src/video/x11/SDL_x11gl.c
@@ -77,6 +77,11 @@ static int glXExtensionSupported(_THIS, const char *extension)
 	/* It takes a bit of care to be fool-proof about parsing the
 	 * OpenGL extensions string. Don't be fooled by sub-strings, etc.
 	 */
+
+	/* http://bugs.debian.org/537487 */
+	if (extensions == NULL) {
+	      return 0;
+	}
 	
 	start = extensions;