From 8bb5d47377b1b63b1659ac03f0e10b27e4b41794 Mon Sep 17 00:00:00 2001
From: Fangrui Song <i@maskray.me>
Date: Thu, 1 Feb 2018 08:34:27 -0800
Subject: [PATCH] __has_include to #include <string_view>

@scturtle's suggestion
---
 third_party/string_view.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/third_party/string_view.h b/third_party/string_view.h
index e0067ba9..d316fdc9 100644
--- a/third_party/string_view.h
+++ b/third_party/string_view.h
@@ -1,6 +1,6 @@
-#if __cplusplus < 201703L
+#if __cplusplus >= 201703L || defined(__has_include) && __has_include(<string_view>)
+#include <string_view>
+#else
 #define STX_NAMESPACE_NAME std
 #include "string_view.hpp"
-#else
-#include <string_view>
 #endif