From 5a80ab5ed4ea9132c75f98fb88f3e21f08e37437 Mon Sep 17 00:00:00 2001
From: John Maddock <john@johnmaddock.co.uk>
Date: Sat, 6 Jun 2009 08:49:30 +0000
Subject: [PATCH] Another tentative VC10 beta fix.

[SVN r53664]
---
 include/boost/regex/config.hpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/boost/regex/config.hpp b/include/boost/regex/config.hpp
index 8c8f5248..88f234d1 100644
--- a/include/boost/regex/config.hpp
+++ b/include/boost/regex/config.hpp
@@ -165,8 +165,10 @@
 #     pragma warning(disable : 4251 4231 4660)
 #  endif
 #  ifdef _DLL
-#     include <string>
-      extern template class __declspec(dllimport) std::basic_string<unsigned short>;
+#     if BOOST_WORKAROUND(BOOST_MSVC, <1600)
+#        include <string>
+         extern template class __declspec(dllimport) std::basic_string<unsigned short>;
+#     endif
 #  endif
 #  ifdef BOOST_MSVC
 #     pragma warning(pop)