From 26994e383c00471d23476a569b00803be0e201a4 Mon Sep 17 00:00:00 2001
From: Howard Hinnant <hhinnant@apple.com>
Date: Mon, 4 Oct 2010 19:01:30 +0000
Subject: [PATCH] __has_feature crutch

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@115540 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/__config | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/__config b/include/__config
index 9540a114..7cc07fac 100644
--- a/include/__config
+++ b/include/__config
@@ -249,4 +249,8 @@ template <unsigned> struct __static_assert_check {};
 #define constexpr const
 #endif
 
+#ifndef __has_feature(__x)
+#define __has_feature(__x) 0
+#endif
+
 #endif  // _LIBCPP_CONFIG