From a8836b76650a0c8fafd4e4d121d2e7abaf4cdaed Mon Sep 17 00:00:00 2001
From: Peter Johnson <johnson.peter@gmail.com>
Date: Sat, 22 Aug 2015 14:01:33 -0700
Subject: [PATCH] Value: Use variant of enable_if to fix MakeString/MakeRaw in
 GCC.

Tested on GCC 4.8, GCC 4.9, and clang 3.6.
---
 include/nt_Value.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/nt_Value.h b/include/nt_Value.h
index 218f3f67d2..a45e1802ff 100644
--- a/include/nt_Value.h
+++ b/include/nt_Value.h
@@ -107,7 +107,8 @@ class Value {
 #ifdef _MSC_VER
   template <typename T, typename = std::enable_if_t<std::is_same<T, std::string>>>
 #else
-  template <typename T>
+  template <typename T,
+            typename std::enable_if<std::is_same<T, std::string>::value>::type>
 #endif
   static std::shared_ptr<Value> MakeString(T&& value) {
     auto val = std::make_shared<Value>(NT_STRING, private_init());
@@ -126,7 +127,8 @@ class Value {
 #ifdef _MSC_VER
   template <typename T, typename = std::enable_if_t<std::is_same<T, std::string>>>
 #else
-  template <typename T>
+  template <typename T,
+            typename std::enable_if<std::is_same<T, std::string>::value>::type>
 #endif
   static std::shared_ptr<Value> MakeRaw(T&& value) {
     auto val = std::make_shared<Value>(NT_RAW, private_init());