http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56996
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2013-04-18 17:13:55 UTC --- (In reply to comment #0) > Using extern "C" in namespace is not right It avoids cluttering the global namespace. The namespace still affects name lookup, but not mangling or the linkage name.