From 5ba74cd3a98fe7bd9b8a7d47b7998290757a3235 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Sun, 3 Jul 2022 23:35:46 +0300
Subject: [PATCH] Update hash_value for pointers to handle the case when
 uintptr_t is larger than size_t

---
 include/boost/container_hash/hash.hpp | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/include/boost/container_hash/hash.hpp b/include/boost/container_hash/hash.hpp
index f58c9c8..b9dbf8e 100644
--- a/include/boost/container_hash/hash.hpp
+++ b/include/boost/container_hash/hash.hpp
@@ -344,12 +344,11 @@ namespace boost
 
     // pointer types
 
-    // Implementation by Alberto Barbati and Dave Harris.
+    // `x + (x >> 3)` adjustment by Alberto Barbati and Dave Harris.
     template <class T> std::size_t hash_value( T* const& v )
     {
-        std::size_t x = static_cast<std::size_t>(
-           reinterpret_cast<boost::uintptr_t>(v));
-        return x + (x >> 3);
+        boost::uintptr_t x = reinterpret_cast<boost::uintptr_t>( v );
+        return boost::hash_value( x + (x >> 3) );
     }
 
     // array types