text: 
  // Copyright (C) 2009-2012 Lorenzo Caminiti
  // Distributed under the Boost Software License, Version 1.0
  // (see accompanying file LICENSE_1_0.txt or a copy at
  // http://www.boost.org/LICENSE_1_0.txt)
  // Home at http://www.boost.org/libs/config
  
  // MACRO:       BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
  // TITLE:       local classes as template parameters
  // DESCRIPTION: Local classes cannot be passed as template parameters.
  
  // NOTE: Local classes cannot be passed as template parameters in C++03 (even
  // if some C++03 compilers, like MSVC and older GCC, allow it). Local classes
  // can instead be passed as template parameters in C++11 (see also N2657, note
  // that this macro does not check if unnamed types can also be passed as
  // template parameters but it is intentionally limited to local named classes
  // because some non C++11 compilers might only support local named classes as
  // template parameters which is still very useful to program local functors).
  namespace boost_no_cxx11_local_class_template_parameters {
  
  template<typename T> struct a { void use() {} };
  template<typename T> void f(T) {}
  
  int test() {
      class local_class {} local_obj;
      a<local_class> a1;
      a1.use(); // Avoid unused variable warning.
      f(local_obj);
      return 0;
  }
  
  } // namespace
  
  