From deb0eb1660f612862c77d225582e102e7ab717ee Mon Sep 17 00:00:00 2001
From: Adam Jackson <ajax@redhat.com>
Date: Wed, 14 Sep 2016 13:56:50 -0400
Subject: [PATCH] glx/glvnd: Don't modify the dummy slot in the dispatch table

Cc: "13.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
---
 src/glx/glxglvnd.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/glx/glxglvnd.c b/src/glx/glxglvnd.c
index 098304d5574..2fc9b0080f8 100644
--- a/src/glx/glxglvnd.c
+++ b/src/glx/glxglvnd.c
@@ -50,6 +50,9 @@ static void __glXGLVNDSetDispatchIndex(const GLubyte *procName, int index)
 {
     unsigned internalIndex = FindGLXFunction(procName);
 
+    if (internalIndex == DI_FUNCTION_COUNT)
+        return; /* unknown or static dispatch */
+
     __glXDispatchTableIndices[internalIndex] = index;
 }
 
-- 
2.30.2