From 94f7a5bd3051906e2fd7de270bf7fc9b088909ac Mon Sep 17 00:00:00 2001
From: Tim Blechmann <tim@klingt.org>
Date: Sat, 8 Sep 2012 16:36:11 +0000
Subject: [PATCH] atomic: fix const-correctnes of double-width load

[SVN r80454]
---
 include/boost/atomic/detail/gcc-x86.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/boost/atomic/detail/gcc-x86.hpp b/include/boost/atomic/detail/gcc-x86.hpp
index a1c9867..ea3d651 100644
--- a/include/boost/atomic/detail/gcc-x86.hpp
+++ b/include/boost/atomic/detail/gcc-x86.hpp
@@ -1556,11 +1556,11 @@ platform_store64(T value, volatile T * ptr)
 
 template<typename T>
 T
-platform_load64(volatile T * ptr)
+platform_load64(const volatile T * ptr)
 {
     T expected = *ptr;
     do {
-    } while (!platform_cmpxchg64_strong(expected, expected, ptr));
+    } while (!platform_cmpxchg64_strong(expected, expected, const_cast<volatile T*>(ptr)));
     return expected;
 }