From f6b56374e4e5b9f0078efac5ed4918c3a04296f7 Mon Sep 17 00:00:00 2001
From: Nick Lewycky <nicholas@mxc.ca>
Date: Wed, 18 Jan 2012 03:41:19 +0000
Subject: Fix a string over-run detected by ASAN.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148375 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/CodeGenModule.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'lib/CodeGen/CodeGenModule.cpp')

diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 4f074eb178..c2c4d0887b 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -883,8 +883,9 @@ namespace {
       unsigned BuiltinID = FD->getBuiltinID();
       if (!BuiltinID)
         return true;
-      const char *BuiltinName = BI.GetName(BuiltinID) + strlen("__builtin_");
-      if (Name == BuiltinName) {
+      StringRef BuiltinName = BI.GetName(BuiltinID);
+      if (BuiltinName.startswith("__builtin_") &&
+          Name == BuiltinName.slice(strlen("__builtin_"), StringRef::npos)) {
         Result = true;
         return false;
       }
-- 
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