From f2dfa09aecf672a3b9980613bde196a5cb1ef994 Mon Sep 17 00:00:00 2001
From: Niels Lohmann <mail@nlohmann.me>
Date: Mon, 20 Feb 2017 18:05:52 +0100
Subject: [PATCH] :bug: fix for #464

---
 src/json.hpp      | 1 +
 src/json.hpp.re2c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/json.hpp b/src/json.hpp
index 6be6a6d9e..ae847adc4 100644
--- a/src/json.hpp
+++ b/src/json.hpp
@@ -3487,6 +3487,7 @@ class basic_json
                    not std::is_same<ValueType, typename string_t::value_type>::value
 #ifndef _MSC_VER  // fix for issue #167 operator<< ambiguity under VS2015
                    and not std::is_same<ValueType, std::initializer_list<typename string_t::value_type>>::value
+                   and not std::is_same<ValueType, typename std::string_view>::value
 #endif
                    , int >::type = 0 >
     operator ValueType() const
diff --git a/src/json.hpp.re2c b/src/json.hpp.re2c
index 826731714..64b1e5ddb 100644
--- a/src/json.hpp.re2c
+++ b/src/json.hpp.re2c
@@ -3487,6 +3487,7 @@ class basic_json
                    not std::is_same<ValueType, typename string_t::value_type>::value
 #ifndef _MSC_VER  // fix for issue #167 operator<< ambiguity under VS2015
                    and not std::is_same<ValueType, std::initializer_list<typename string_t::value_type>>::value
+                   and not std::is_same<ValueType, typename std::string_view>::value
 #endif
                    , int >::type = 0 >
     operator ValueType() const