From fc46064c29439c9025e4b228242f68f60c1ca772 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ion=20Gazta=C3=B1aga?= <igaztanaga@gmail.com>
Date: Tue, 2 May 2023 22:42:29 +0200
Subject: [PATCH] Fix UB when downcasting null pointers, use pointer_trait'
 specialized function

---
 include/boost/intrusive/hashtable.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/intrusive/hashtable.hpp b/include/boost/intrusive/hashtable.hpp
index 3baa465..11c81d7 100644
--- a/include/boost/intrusive/hashtable.hpp
+++ b/include/boost/intrusive/hashtable.hpp
@@ -591,7 +591,7 @@ inline typename pointer_traits<SlistNodePtr>::template rebind_pointer<Node>::typ
    dcast_bucket_ptr(const SlistNodePtr &p)
 {
    typedef typename pointer_traits<SlistNodePtr>::template rebind_pointer<Node>::type node_ptr;
-   return pointer_traits<node_ptr>::pointer_to(static_cast<Node&>(*p));
+   return pointer_traits<node_ptr>::static_cast_from(p);
 }
 
 template<class NodeTraits>