http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43486
--- Comment #6 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2012-10-14 18:28:32 UTC --- I think there is a consensus that g++ wants this somehow. Recent work: http://gcc.gnu.org/ml/gcc-patches/2012-09/msg01222.html