From e0e7fa39e755fd1868267eb075c335f7c8a58eee Mon Sep 17 00:00:00 2001
From: Guillaume Racicot <gufideg@gmail.com>
Date: Sun, 3 Jun 2018 23:49:13 -0400
Subject: [PATCH 1/2] Re-added external_constructor with string compatible
 types

---
 include/nlohmann/detail/conversions/to_json.hpp | 10 ++++++++++
 single_include/nlohmann/json.hpp                | 10 ++++++++++
 2 files changed, 20 insertions(+)

diff --git a/include/nlohmann/detail/conversions/to_json.hpp b/include/nlohmann/detail/conversions/to_json.hpp
index ce2bc0aad..b147d0774 100644
--- a/include/nlohmann/detail/conversions/to_json.hpp
+++ b/include/nlohmann/detail/conversions/to_json.hpp
@@ -51,6 +51,16 @@ struct external_constructor<value_t::string>
         j.m_value = std::move(s);
         j.assert_invariant();
     }
+
+	template<typename BasicJsonType, typename CompatibleStringType,
+		     enable_if_t<not std::is_same<CompatibleStringType, typename BasicJsonType::string_t>::value,
+		                 int> = 0>
+		static void construct(BasicJsonType& j, const CompatibleStringType& str)
+	{
+		j.m_type = value_t::string;
+		j.m_value.string = j.template create<typename BasicJsonType::string_t>(str);
+		j.assert_invariant();
+	}
 };
 
 template<>
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index a886cc9eb..630e40272 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -1321,6 +1321,16 @@ struct external_constructor<value_t::string>
         j.m_value = std::move(s);
         j.assert_invariant();
     }
+
+    template<typename BasicJsonType, typename CompatibleStringType,
+             enable_if_t<not std::is_same<CompatibleStringType, typename BasicJsonType::string_t>::value,
+                         int> = 0>
+    static void construct(BasicJsonType& j, const CompatibleStringType& str)
+    {
+        j.m_type = value_t::string;
+        j.m_value.string = j.template create<typename BasicJsonType::string_t>(str);
+        j.assert_invariant();
+    }
 };
 
 template<>

From 5676a2a0762ea3a657b2be02d8d9f851f05513a8 Mon Sep 17 00:00:00 2001
From: Guillaume Racicot <gufideg@gmail.com>
Date: Sun, 3 Jun 2018 23:51:07 -0400
Subject: [PATCH 2/2] Aligned template declaration

---
 include/nlohmann/detail/conversions/to_json.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/nlohmann/detail/conversions/to_json.hpp b/include/nlohmann/detail/conversions/to_json.hpp
index b147d0774..2d4449f4f 100644
--- a/include/nlohmann/detail/conversions/to_json.hpp
+++ b/include/nlohmann/detail/conversions/to_json.hpp
@@ -53,8 +53,8 @@ struct external_constructor<value_t::string>
     }
 
 	template<typename BasicJsonType, typename CompatibleStringType,
-		     enable_if_t<not std::is_same<CompatibleStringType, typename BasicJsonType::string_t>::value,
-		                 int> = 0>
+		 enable_if_t<not std::is_same<CompatibleStringType, typename BasicJsonType::string_t>::value,
+		             int> = 0>
 		static void construct(BasicJsonType& j, const CompatibleStringType& str)
 	{
 		j.m_type = value_t::string;