http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51633
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-12-30 06:20:47 UTC --- (In reply to comment #1) > By the way, calling these issues "Regression" doesn't seem appropriate: > granted, 4.5 may have parsed some constrexpr usages, but didn't have any > semantics implemented, could very hardly fail. In the past we decided accepts invalid changing into an ICE is a regression which is why this was considered a regression (I Can find the previous bug reports that mention that).