From aeef50709e6a49f5807cdf787473ca8adecbe23c Mon Sep 17 00:00:00 2001
From: chenguoping <chenguopingdota@163.com>
Date: Mon, 22 Jun 2020 20:17:56 +0800
Subject: [PATCH] to allow for ADL in int_to_string() function

---
 include/nlohmann/detail/iterators/iteration_proxy.hpp | 4 +++-
 single_include/nlohmann/json.hpp                      | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/include/nlohmann/detail/iterators/iteration_proxy.hpp b/include/nlohmann/detail/iterators/iteration_proxy.hpp
index 48927b018..d19be4ddd 100644
--- a/include/nlohmann/detail/iterators/iteration_proxy.hpp
+++ b/include/nlohmann/detail/iterators/iteration_proxy.hpp
@@ -16,7 +16,9 @@ template<typename string_type, typename std::enable_if<
              std::is_same<char, typename string_type::value_type>::value, int>::type = 0>
 void int_to_string( string_type& target, std::size_t value )
 {
-    target = std::to_string(value);
+    // For ADL
+    using std::to_string;
+    target = to_string(value);
 }
 template <typename IteratorType> class iteration_proxy_value
 {
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index 69a4ec092..58b12a7df 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -3654,7 +3654,9 @@ template<typename string_type, typename std::enable_if<
              std::is_same<char, typename string_type::value_type>::value, int>::type = 0>
 void int_to_string( string_type& target, std::size_t value )
 {
-    target = std::to_string(value);
+    // For ADL
+    using std::to_string;
+    target = to_string(value);
 }
 template <typename IteratorType> class iteration_proxy_value
 {