From 94824c807f76dc4f3d41109a75808ed288f858f9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20B=C3=B6hme?= <joerg@chaosdorf.de>
Date: Fri, 20 Mar 2015 00:23:58 +0100
Subject: [PATCH] Add missing std:: namespace

---
 include/boost/smart_ptr/detail/array_allocator.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/smart_ptr/detail/array_allocator.hpp b/include/boost/smart_ptr/detail/array_allocator.hpp
index 4f9dc2b..7147996 100644
--- a/include/boost/smart_ptr/detail/array_allocator.hpp
+++ b/include/boost/smart_ptr/detail/array_allocator.hpp
@@ -213,7 +213,7 @@ namespace boost {
             typedef Y* pointer;
             typedef const Y* const_pointer;
             typedef std::size_t size_type;
-            typedef ptrdiff_t difference_type;
+            typedef std::ptrdiff_t difference_type;
             typedef Y& reference;
             typedef const Y& const_reference;