From 28bdc0cf026c35371e3938cdc118c407090e8499 Mon Sep 17 00:00:00 2001
From: Chao Shen <chao.shen@uisee.com>
Date: Fri, 2 Feb 2018 08:48:37 +0800
Subject: [PATCH] Check if using libstdc++ before include <string_view>.

---
 third_party/string_view.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/third_party/string_view.h b/third_party/string_view.h
index d316fdc9..b96111ff 100644
--- a/third_party/string_view.h
+++ b/third_party/string_view.h
@@ -1,4 +1,5 @@
-#if __cplusplus >= 201703L || defined(__has_include) && __has_include(<string_view>)
+#include <cstddef> // to check __GLIBCXX__
+#if __cplusplus >= 201703L || (defined(__has_include) && __has_include(<string_view>) && !defined(__GLIBCXX__))
 #include <string_view>
 #else
 #define STX_NAMESPACE_NAME std