From 50c24c3ff34882864b74862abdbaa5d7dcd8730d Mon Sep 17 00:00:00 2001
From: =?utf8?q?Kristian=20H=C3=B8gsberg=20Kristensen?= <krh@bitplanet.net>
Date: Tue, 10 May 2016 15:08:38 -0700
Subject: [PATCH] nir: Handle NULL in nir_copy_deref()

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
---
 src/compiler/nir/nir.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/compiler/nir/nir.c b/src/compiler/nir/nir.c
index c9db52f..2741eb6 100644
--- a/src/compiler/nir/nir.c
+++ b/src/compiler/nir/nir.c
@@ -642,6 +642,9 @@ copy_deref_struct(void *mem_ctx, nir_deref_struct *deref)
 nir_deref *
 nir_copy_deref(void *mem_ctx, nir_deref *deref)
 {
+   if (deref == NULL)
+      return NULL;
+
    switch (deref->deref_type) {
    case nir_deref_type_var:
       return &copy_deref_var(mem_ctx, nir_deref_as_var(deref))->deref;
-- 
2.7.4