From 88c27904108e8ddb3cedca058aebfcb47bb61297 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ion=20Gazta=C3=B1aga?= <igaztanaga@gmail.com>
Date: Sun, 31 Dec 2023 20:25:08 +0100
Subject: [PATCH] Add missing <iosfwd> to implement operator<<

---
 test/smart_ptr.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/test/smart_ptr.hpp b/test/smart_ptr.hpp
index 10e5485..c2546fe 100644
--- a/test/smart_ptr.hpp
+++ b/test/smart_ptr.hpp
@@ -15,6 +15,7 @@
 #include <boost/intrusive/pointer_traits.hpp>
 #include <boost/intrusive/detail/iterator.hpp>
 #include <boost/move/adl_move_swap.hpp>
+#include <iosfwd>
 
 #if (defined _MSC_VER)
 #  pragma once