From c4e21ba91a477e58f0c94029f48653357df8503a Mon Sep 17 00:00:00 2001
From: Florian Albrechtskirchinger <falbrechtskirchinger@gmail.com>
Date: Mon, 1 Aug 2022 09:55:14 +0200
Subject: [PATCH] Silence warning about hidden global declaration

---
 tests/src/unit-noexcept.cpp | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/tests/src/unit-noexcept.cpp b/tests/src/unit-noexcept.cpp
index 6ccf6c432..d2ad27061 100644
--- a/tests/src/unit-noexcept.cpp
+++ b/tests/src/unit-noexcept.cpp
@@ -34,20 +34,18 @@ void to_json(json& /*unused*/, pod_bis /*unused*/) {}
 void from_json(const json& /*unused*/, pod /*unused*/) noexcept {}
 void from_json(const json& /*unused*/, pod_bis /*unused*/) {}
 
-json* j = nullptr;
-
 static_assert(noexcept(json{}), "");
-static_assert(noexcept(nlohmann::to_json(*j, 2)), "");
-static_assert(noexcept(nlohmann::to_json(*j, 2.5)), "");
-static_assert(noexcept(nlohmann::to_json(*j, true)), "");
-static_assert(noexcept(nlohmann::to_json(*j, test{})), "");
-static_assert(noexcept(nlohmann::to_json(*j, pod{})), "");
-static_assert(!noexcept(nlohmann::to_json(*j, pod_bis{})), "");
+static_assert(noexcept(nlohmann::to_json(std::declval<json&>(), 2)), "");
+static_assert(noexcept(nlohmann::to_json(std::declval<json&>(), 2.5)), "");
+static_assert(noexcept(nlohmann::to_json(std::declval<json&>(), true)), "");
+static_assert(noexcept(nlohmann::to_json(std::declval<json&>(), test{})), "");
+static_assert(noexcept(nlohmann::to_json(std::declval<json&>(), pod{})), "");
+static_assert(!noexcept(nlohmann::to_json(std::declval<json&>(), pod_bis{})), "");
 static_assert(noexcept(json(2)), "");
 static_assert(noexcept(json(test{})), "");
 static_assert(noexcept(json(pod{})), "");
-static_assert(noexcept(j->get<pod>()), "");
-static_assert(!noexcept(j->get<pod_bis>()), "");
+static_assert(noexcept(std::declval<json&>().get<pod>()), "");
+static_assert(!noexcept(std::declval<json&>().get<pod_bis>()), "");
 static_assert(noexcept(json(pod{})), "");
 } // namespace
 
@@ -70,7 +68,6 @@ TEST_CASE("runtime checks")
 
     SECTION("silence -Wunneeded-internal-declaration errors")
     {
-        j = nullptr;
         json j2;
         to_json(j2, pod());
         to_json(j2, pod_bis());