From 2122c7753c01265990419029eb1de901cc8d77d9 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Mon, 22 Apr 2019 02:17:28 +0300
Subject: [PATCH] Avoid memcpy over a spinlock, because g++ 8 warns

---
 include/boost/smart_ptr/atomic_shared_ptr.hpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/include/boost/smart_ptr/atomic_shared_ptr.hpp b/include/boost/smart_ptr/atomic_shared_ptr.hpp
index 7c48507..b863100 100644
--- a/include/boost/smart_ptr/atomic_shared_ptr.hpp
+++ b/include/boost/smart_ptr/atomic_shared_ptr.hpp
@@ -63,6 +63,11 @@ public:
     {
     }
 
+    atomic_shared_ptr( shared_ptr<T> p ) BOOST_SP_NOEXCEPT
+        : p_( std::move( p ) ), l_ BOOST_DETAIL_SPINLOCK_INIT
+    {
+    }
+
 #else
 
     atomic_shared_ptr() BOOST_SP_NOEXCEPT
@@ -71,8 +76,6 @@ public:
         std::memcpy( &l_, &init, sizeof( init ) );
     }
 
-#endif
-
     atomic_shared_ptr( shared_ptr<T> p ) BOOST_SP_NOEXCEPT
 #if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
         : p_( std::move( p ) )
@@ -84,6 +87,8 @@ public:
         std::memcpy( &l_, &init, sizeof( init ) );
     }
 
+#endif
+
     atomic_shared_ptr& operator=( shared_ptr<T> r ) BOOST_SP_NOEXCEPT
     {
         boost::detail::spinlock::scoped_lock lock( l_ );