From 68ca01560fcfbde94579e95a6b61673109db6e3e Mon Sep 17 00:00:00 2001
From: "Xiang, Haihao" <haihao.xiang@intel.com>
Date: Wed, 29 Aug 2007 13:03:34 -0400
Subject: [PATCH] i965: check NULL pointer. fix bug#12193

---
 src/mesa/drivers/dri/i965/intel_pixel_bitmap.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/intel_pixel_bitmap.c b/src/mesa/drivers/dri/i965/intel_pixel_bitmap.c
index 421fcc5e511..2de79a09d0e 100644
--- a/src/mesa/drivers/dri/i965/intel_pixel_bitmap.c
+++ b/src/mesa/drivers/dri/i965/intel_pixel_bitmap.c
@@ -174,6 +174,8 @@ do_blit_bitmap( GLcontext *ctx,
       GLubyte ub[4];
    } color;
 
+   if (!dst)
+       return GL_FALSE;
 
    if (unpack->BufferObj->Name) {
       bitmap = map_pbo(ctx, width, height, unpack, bitmap);