add header to be built by gcc 4.3 on Linux.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72158 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaChecking.cpp b/lib/Sema/SemaChecking.cpp
index 5a68346..e9ddce3 100644
--- a/lib/Sema/SemaChecking.cpp
+++ b/lib/Sema/SemaChecking.cpp
@@ -19,6 +19,7 @@
#include "clang/AST/ExprObjC.h"
#include "clang/Lex/LiteralSupport.h"
#include "clang/Lex/Preprocessor.h"
+#include <limits>
using namespace clang;
/// getLocationOfStringLiteralByte - Return a source location that points to the