From 59cde1ad6ef0bcfbdc86bb1527342f1065dc0ab5 Mon Sep 17 00:00:00 2001
From: Jamie Seward <jamie.d.seward@gmail.com>
Date: Sat, 21 Oct 2017 16:29:37 -0700
Subject: [PATCH] Fix for _HAS_CXX17 == 0

Copied from solution to https://github.com/nlohmann/json/issues/464
---
 src/json.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/json.hpp b/src/json.hpp
index ac93e725b..4a5e14d42 100644
--- a/src/json.hpp
+++ b/src/json.hpp
@@ -110,7 +110,7 @@ SOFTWARE.
 #endif
 
 // string_view support
-#if defined(_MSC_VER) && defined(_HAS_CXX17)
+#if defined(_MSC_VER) && defined(_HAS_CXX17) && _HAS_CXX17 == 1
 	#define JSON_USE_STRING_VIEW
 #endif