From ea31737fefd6d8bbbc54573e6b3957c1a64dc65d Mon Sep 17 00:00:00 2001
From: Bill Wendling <isanbard@gmail.com>
Date: Tue, 11 May 2010 01:33:39 +0000
Subject: Don't create a StringRef with a NULL value.

llvm-svn: 103455
---
 llvm/lib/Target/SubtargetFeature.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'llvm/lib/Target')

diff --git a/llvm/lib/Target/SubtargetFeature.cpp b/llvm/lib/Target/SubtargetFeature.cpp
index 035e64a017b..113cd5b7b3e 100644
--- a/llvm/lib/Target/SubtargetFeature.cpp
+++ b/llvm/lib/Target/SubtargetFeature.cpp
@@ -389,6 +389,8 @@ void SubtargetFeatures::getDefaultSubtargetFeatures(const std::string &CPU,
     break;
   }
 
+  if (!Attrs) return;
+
   StringRef SR(Attrs);
 
   while (!SR.empty()) {
-- 
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