From: Stéphane Marchesin <marcheu@chromium.org>
Date: Sat, 4 Jun 2011 00:03:09 +0000 (-0700)
Subject: dri2: protect dri2FlushFrontBuffer against NULL buffers.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3d3ecb8520ccca0863026a94e7fda9840aff6c0a;p=mesa.git

dri2: protect dri2FlushFrontBuffer against NULL buffers.
---

diff --git a/src/glx/dri2_glx.c b/src/glx/dri2_glx.c
index 69b47ae45e2..506754ccc1f 100644
--- a/src/glx/dri2_glx.c
+++ b/src/glx/dri2_glx.c
@@ -457,6 +457,12 @@ static void
 dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
 {
    struct dri2_drawable *pdraw = loaderPrivate;
+   if (!pdraw)
+      return;
+
+   if (!pdraw->base.psc)
+      return;
+
    struct glx_display *priv = __glXInitialize(pdraw->base.psc->dpy);
    struct dri2_display *pdp = (struct dri2_display *)priv->dri2Display;
    struct glx_context *gc = __glXGetCurrentContext();