diff -urp boost_1_48_0~/boost/xpressive/detail/core/adaptor.hpp boost_1_48_0/boost/xpressive/detail/core/adaptor.hpp
--- boost_1_48_0~/boost/xpressive/detail/core/adaptor.hpp	2012-01-16 16:15:32.315239932 +0100
+++ boost_1_48_0/boost/xpressive/detail/core/adaptor.hpp	2012-01-16 16:17:54.024243179 +0100
@@ -41,7 +41,7 @@ struct xpression_adaptor
       && ((__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 1)))
         // Ugh, gcc has an optimizer bug which elides this c'tor call
         // resulting in pure virtual function calls.
-        __attribute__((noinline))
+        __attribute__((__noinline__))
     #endif
       : xpr_(xpr)
     {