From da9b951a892d96e0521abeec09d4345ddf04ab8d Mon Sep 17 00:00:00 2001
From: jkim <jkim@FreeBSD.org>
Date: Fri, 14 Sep 2012 22:53:11 +0000
Subject: Import ACPICA 20120913.

---
 source/components/disassembler/dmopcode.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'source/components/disassembler/dmopcode.c')

diff --git a/source/components/disassembler/dmopcode.c b/source/components/disassembler/dmopcode.c
index 2ce08a3..caebe26 100644
--- a/source/components/disassembler/dmopcode.c
+++ b/source/components/disassembler/dmopcode.c
@@ -254,6 +254,10 @@ AcpiDmFieldPredefinedDescription (
     /* Major cheat: We previously put the Tag ptr in the Node field */
 
     Tag = ACPI_CAST_PTR (char, IndexOp->Common.Node);
+    if (!Tag)
+    {
+        return;
+    }
 
     /* Match the name in the info table */
 
-- 
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