http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56996
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2013-04-18 17:17:56 UTC --- (In reply to comment #1) > (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. More than that, the standard C++ headers actually use that feature.