From: Vinson Lee <vlee@vmware.com>
Date: Mon, 23 Nov 2009 06:30:32 +0000 (-0500)
Subject: glx: Prevent potential null pointer deference in driCreateContext.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=76b3523d752968bc552d4350a39b9b9b1a023cf0;p=mesa.git

glx: Prevent potential null pointer deference in driCreateContext.
(cherry picked from commit 4b0b250aae6ae7d48cd24f9d91d05ab58086c4b2)
---

diff --git a/src/glx/x11/drisw_glx.c b/src/glx/x11/drisw_glx.c
index 15e15866582..1866b2cc870 100644
--- a/src/glx/x11/drisw_glx.c
+++ b/src/glx/x11/drisw_glx.c
@@ -250,12 +250,14 @@ driCreateContext(__GLXscreenConfigs * psc,
 {
    __GLXDRIcontextPrivate *pcp, *pcp_shared;
    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) mode;
-   const __DRIcoreExtension *core = psc->core;
+   const __DRIcoreExtension *core;
    __DRIcontext *shared = NULL;
 
    if (!psc || !psc->driScreen)
       return NULL;
 
+   core = psc->core;
+
    if (shareList) {
       pcp_shared = (__GLXDRIcontextPrivate *) shareList->driContext;
       shared = pcp_shared->driContext;