From 522600a229b950314b5f4af84eba4f3e8a0ffea1 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Sun, 2 Dec 2012 13:10:19 +0000
Subject: Vendor import of llvm release_32 branch r168974 (effectively, 3.2
 RC2): http://llvm.org/svn/llvm-project/llvm/branches/release_32@168974

---
 lib/Support/StringRef.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'lib/Support/StringRef.cpp')

diff --git a/lib/Support/StringRef.cpp b/lib/Support/StringRef.cpp
index 8aab4b2760e7..f8e920846259 100644
--- a/lib/Support/StringRef.cpp
+++ b/lib/Support/StringRef.cpp
@@ -350,8 +350,8 @@ bool llvm::getAsUnsignedInteger(StringRef Str, unsigned Radix,
     unsigned long long PrevResult = Result;
     Result = Result*Radix+CharVal;
 
-    // Check for overflow.
-    if (Result < PrevResult)
+    // Check for overflow by shifting back and seeing if bits were lost.
+    if (Result/Radix < PrevResult)
       return true;
 
     Str = Str.substr(1);
-- 
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