From 85ddc4cb1aa93c9d6062525f269240829bf6e83f Mon Sep 17 00:00:00 2001
From: Haojian Wu <hokein@google.com>
Date: Thu, 27 Apr 2017 12:22:33 +0000
Subject: [PATCH] Fix asan failures on OpenMP.

llvm-svn: 301536
---
 clang/lib/Sema/SemaOpenMP.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/clang/lib/Sema/SemaOpenMP.cpp b/clang/lib/Sema/SemaOpenMP.cpp
index fb13669..9c6948b 100644
--- a/clang/lib/Sema/SemaOpenMP.cpp
+++ b/clang/lib/Sema/SemaOpenMP.cpp
@@ -833,6 +833,8 @@ DSAStackTy::hasDSA(ValueDecl *D,
   auto I = std::prev(StartI);
   do {
     ++I;
+    if (I == EndI)
+      break;
     if (!DPred(I->Directive) && !isParallelOrTaskRegion(I->Directive))
       continue;
     DSAVarData DVar = getDSA(I, D);
-- 
2.7.4