Mesa (master): glx/glvnd: Don' t modify the dummy slot in the dispatch table

[Adam Jackson]

Module: Mesa
Branch: master
Commit: deb0eb1660f612862c77d225582e102e7ab717ee
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=deb0eb1660f612862c77d225582e102e7ab717ee

Author: Adam Jackson <ajax at redhat.com>
Date:   Wed Sep 14 13:56:50 2016 -0400

glx/glvnd: Don't modify the dummy slot in the dispatch table

Cc: "13.0" <mesa-stable at lists.freedesktop.org>
Reviewed-by: Eric Engestrom <eric.engestrom at imgtec.com>
Signed-off-by: Adam Jackson <ajax at 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 098304d..2fc9b00 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;
 }