https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65608 Bug 65608 depends on bug 13166, which changed state.
Bug 13166 Summary: [DR136] not implemented https://gcc.gnu.org/bugzilla/show_bug.cgi?id=13166 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |DUPLICATE