http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49278
--- Comment #5 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-06-08 05:55:26 UTC --- (In reply to comment #4) > I have now asked at c.l.f: Richard and Dick think the standard is very unclear; they are slightly inclined to conclude that it is invalid, but suggest to fill an interpretation request, which I will do.