I have mentioned this in a nearby thread about scope_guard, but I believe it missed the addresee. I purpose to add a macro to Boost.PP that will expand to some unique in translation unit scope name. I needed such functionality to generate unique variable names for anonymous scope guards, but I believe there are places in Boost that reimplement similar functionality (BOOST_STATIC_ASSERT does the same, from the top of my head). My implementation example is availeble in: http://boost-consulting.com/vault/index.php?action=downloadfile&filename=scope_guard.zip&directory=Function%20Objects& See the file boost/guard/unique_name.hpp, BOOST_SG_UNIQUE_NAME macro. PS: I don't actually insist on Boost.PP to be the place for such macro, but I think it should be in some common place and be available to end users.