From c67e101b77c0e3f4bc6f1df91141aac4c674ac50 Mon Sep 17 00:00:00 2001
From: luistung <dongliang1986@gmail.com>
Date: Fri, 16 Sep 2022 03:09:42 +0800
Subject: [PATCH] fix for 3732

---
 include/nlohmann/json.hpp        | 4 ++++
 single_include/nlohmann/json.hpp | 4 ++++
 tests/src/unit-ordered_json.cpp  | 6 ++++++
 3 files changed, 14 insertions(+)

diff --git a/include/nlohmann/json.hpp b/include/nlohmann/json.hpp
index b1c23f7d7..af69cac54 100644
--- a/include/nlohmann/json.hpp
+++ b/include/nlohmann/json.hpp
@@ -5123,6 +5123,10 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
     /// @}
 };
 
+// Explicit instantiation
+// fix for issue #3732
+template class nlohmann::basic_json<nlohmann::ordered_map>;
+
 /// @brief user-defined to_string function for JSON values
 /// @sa https://json.nlohmann.me/api/basic_json/to_string/
 NLOHMANN_BASIC_JSON_TPL_DECLARATION
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index efac6d2d2..759517e1c 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -24339,6 +24339,10 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
     /// @}
 };
 
+// Explicit instantiation
+// fix for issue #3732
+template class nlohmann::basic_json<nlohmann::ordered_map>;
+
 /// @brief user-defined to_string function for JSON values
 /// @sa https://json.nlohmann.me/api/basic_json/to_string/
 NLOHMANN_BASIC_JSON_TPL_DECLARATION
diff --git a/tests/src/unit-ordered_json.cpp b/tests/src/unit-ordered_json.cpp
index 4e853cc3c..44bc96679 100644
--- a/tests/src/unit-ordered_json.cpp
+++ b/tests/src/unit-ordered_json.cpp
@@ -12,6 +12,12 @@
 using nlohmann::json;
 using nlohmann::ordered_json;
 
+//fix for issue #3732
+void test(nlohmann::detail::iteration_proxy_value <
+          nlohmann::detail::iter_impl<nlohmann::ordered_json >> const& val)
+{
+    static_cast<void>(val.value());
+}
 
 TEST_CASE("ordered_json")
 {