From 4b859e3d399f6574304bf2b5b34acd85af0e8ebc Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Mon, 20 Feb 2023 21:17:55 +0200
Subject: [PATCH] Use `friend class`, omission of `class` is C++11

---
 test/serialization_split_member_test.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/serialization_split_member_test.cpp b/test/serialization_split_member_test.cpp
index ec73d78..9c1a8b2 100644
--- a/test/serialization_split_member_test.cpp
+++ b/test/serialization_split_member_test.cpp
@@ -16,7 +16,7 @@ struct X
 
 private:
 
-    friend boost::serialization::access;
+    friend class boost::serialization::access;
 
     template<class Ar> void load( Ar& ar, unsigned /*v*/ )
     {