From 82cb244b90c601103c1efe03ea40f30348913c7d Mon Sep 17 00:00:00 2001
From: Niels Lohmann <mail@nlohmann.me>
Date: Tue, 13 Oct 2026 10:11:13 +0200
Subject: [PATCH] Mark json_fwd.hpp as exported by json.hpp for IWYU /
 include-cleaner

json_fwd.hpp is the only header declaring the nlohmann::json alias, so
include-what-you-use and clang-tidy's misc-include-cleaner attributed
the name to it and told users of <nlohmann/json.hpp> to include
json_fwd.hpp as well (or instead, which breaks compilation).

Fixes #5812

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
---
 include/nlohmann/json.hpp        | 2 +-
 single_include/nlohmann/json.hpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/nlohmann/json.hpp b/include/nlohmann/json.hpp
index fae89829a..d2eb80353 100644
--- a/include/nlohmann/json.hpp
+++ b/include/nlohmann/json.hpp
@@ -74,7 +74,7 @@
 #include <nlohmann/detail/output/serializer.hpp>
 #include <nlohmann/detail/recursion_depth_limit.hpp>
 #include <nlohmann/detail/value_t.hpp>
-#include <nlohmann/json_fwd.hpp>
+#include <nlohmann/json_fwd.hpp> // IWYU pragma: export
 #include <nlohmann/ordered_map.hpp> // IWYU pragma: keep
 #include <nlohmann/thirdparty/hedley/hedley.hpp>
 
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index b6b927835..c20b295f8 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -27776,7 +27776,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // #include <nlohmann/detail/value_t.hpp>
 
 // #include <nlohmann/json_fwd.hpp>
-
+// IWYU pragma: export
 // #include <nlohmann/ordered_map.hpp>
 //     __ _____ _____ _____
 //  __|  |   __|     |   | |  JSON for Modern C++