https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90833
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to zhonghao from comment #0) > Is the spec changed? Or, actually, this is a new bug? P.S. It doesn't make sense to ask if the spec changed when the previous bug was about conformance to the C standard and now you're talking about conformance to the C++ standard. The spec didn't change, they're just different specs.