diff --git a/include/boost/core/ref.hpp b/include/boost/core/ref.hpp index 46db5fe..d29a4d6 100644 --- a/include/boost/core/ref.hpp +++ b/include/boost/core/ref.hpp @@ -59,7 +59,7 @@ template< class Y, class T > struct ref_convertible enum _vt { value = sizeof( (f)( static_cast(0) ) ) == sizeof(yes) }; }; -#if !defined(BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS) +#if defined(BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS) struct ref_empty { };