http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47668
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-02-09 20:53:23 UTC --- I know g++ has bugs in this area, so I'm cautious about assuming "it works with g++" means it's correct, but that seems to work ok in a couple of quick tests I did with both g++ and clang++
