https://gcc.gnu.org/bugzilla/show_bug.cgi?id=29670 Bug 29670 depends on bug 78492, which changed state.
Bug 78492 Summary: [OOP] Compiler segfault with non_overridable function in generic interface https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78492 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED