From 0909d3c5eda84e75a8071ba44479b0f3ab0eb1f7 Mon Sep 17 00:00:00 2001
From: Argyrios Kyrtzidis <akyrtzi@gmail.com>
Date: Wed, 27 Mar 2013 01:25:37 +0000
Subject: [PATCH] [lib/Headers] Define NULL as __DARWIN_NULL when on __APPLE__.

This makes it identical with the system definition.

llvm-svn: 178110
---
 clang/lib/Headers/stddef.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/clang/lib/Headers/stddef.h b/clang/lib/Headers/stddef.h
index 52962248f67f..a8d6bf414886 100644
--- a/clang/lib/Headers/stddef.h
+++ b/clang/lib/Headers/stddef.h
@@ -53,7 +53,9 @@ typedef __WCHAR_TYPE__ wchar_t;
 #endif
 
 #undef NULL
-#ifdef __cplusplus
+#if defined(__APPLE__) && defined(__DARWIN_NULL)
+#  define NULL __DARWIN_NULL
+#elif defined(__cplusplus)
 #  if !defined(__MINGW32__) && !defined(_MSC_VER)
 #    define NULL __null
 #  else