From e8853f23cd776a1599ee422de5355692ec4a1a6f Mon Sep 17 00:00:00 2001
From: Steven Watanabe <steven@providere-consulting.com>
Date: Sat, 16 Feb 2013 02:48:46 +0000
Subject: [PATCH] Use __may_alias__ instead of may_alias.  Fixes #6410.

[SVN r82919]
---
 include/boost/optional/optional.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/optional/optional.hpp b/include/boost/optional/optional.hpp
index 071e07c..5d5870b 100644
--- a/include/boost/optional/optional.hpp
+++ b/include/boost/optional/optional.hpp
@@ -127,7 +127,7 @@ class aligned_storage
     union
     // This works around GCC warnings about breaking strict aliasing rules when casting storage address to T*
 #if defined(BOOST_OPTIONAL_DETAIL_USE_ATTRIBUTE_MAY_ALIAS)
-    __attribute__((may_alias))
+    __attribute__((__may_alias__))
 #endif
     dummy_u
     {