From db081b497e42556f9f6d771de104bea948c925b5 Mon Sep 17 00:00:00 2001
From: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Date: Mon, 7 Apr 2014 14:37:42 +0300
Subject: [PATCH] i965/fs: Check variable_storage return value in
 fs_visitor::visit

check variable_storage() found the requested fs_reg.

Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
---
 src/mesa/drivers/dri/i965/brw_fs_visitor.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index 6352739e794..654f5fec593 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -155,6 +155,12 @@ void
 fs_visitor::visit(ir_dereference_variable *ir)
 {
    fs_reg *reg = variable_storage(ir->var);
+
+   if (!reg) {
+      fail("Failed to find variable storage for %s\n", ir->var->name);
+      this->result = fs_reg(reg_null_d);
+      return;
+   }
    this->result = *reg;
 }
 
-- 
2.30.2