http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55170
--- Comment #1 from Rafael Avila de Espindola <rafael.espindola at gmail dot com> 2012-11-01 20:29:02 UTC --- The relevant thread seems to be http://sourcerytools.com/pipermail/cxx-abi-dev/2011-April/002404.html