https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108063
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |WONTFIX --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- This is called a violation of the one definition rule. In c++ classes even have linkage. No diagnostic is required as it is undefined behavior ar runtime. Note using -flto and you would catch these.