https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94404 Bug 94404 depends on bug 70163, which changed state.
Bug 70163 Summary: C++ DR 257 constructor forward to virtual base class's constructor in an abstract class required https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70163 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED