From 51e1a51b8aaa06132a2bcac8452f55bc36a8aa18 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Fri, 24 Oct 2025 21:22:24 +0300
Subject: [PATCH] Remove support for BOOST_AC_USE_SPINLOCK

---
 include/boost/smart_ptr/detail/atomic_count.hpp      | 3 ---
 include/boost/smart_ptr/detail/deprecated_macros.hpp | 2 +-
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/include/boost/smart_ptr/detail/atomic_count.hpp b/include/boost/smart_ptr/detail/atomic_count.hpp
index d4f8025..3bbb1f0 100644
--- a/include/boost/smart_ptr/detail/atomic_count.hpp
+++ b/include/boost/smart_ptr/detail/atomic_count.hpp
@@ -51,9 +51,6 @@
 #elif defined( BOOST_AC_USE_STD_ATOMIC )
 # include <boost/smart_ptr/detail/atomic_count_std_atomic.hpp>
 
-#elif defined( BOOST_AC_USE_SPINLOCK )
-# include <boost/smart_ptr/detail/atomic_count_spin.hpp>
-
 #elif defined( BOOST_AC_USE_PTHREADS )
 # include <boost/smart_ptr/detail/atomic_count_pt.hpp>
 
diff --git a/include/boost/smart_ptr/detail/deprecated_macros.hpp b/include/boost/smart_ptr/detail/deprecated_macros.hpp
index 078d6df..7c2b544 100644
--- a/include/boost/smart_ptr/detail/deprecated_macros.hpp
+++ b/include/boost/smart_ptr/detail/deprecated_macros.hpp
@@ -27,7 +27,7 @@ BOOST_PRAGMA_MESSAGE("The macro BOOST_SP_USE_QUICK_ALLOCATOR has been deprecated
 
 #if defined(BOOST_AC_USE_SPINLOCK)
 
-BOOST_PRAGMA_MESSAGE("The macro BOOST_AC_USE_SPINLOCK has been deprecated in 1.87 and support for it will be removed.")
+BOOST_PRAGMA_MESSAGE("The macro BOOST_AC_USE_SPINLOCK has been deprecated in 1.87 and support for it was removed in 1.90.")
 
 #endif