https://gcc.gnu.org/bugzilla/show_bug.cgi?id=20585 Bug 20585 depends on bug 40881, which changed state.
Bug 40881 Summary: [F03] warn for obsolescent features https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40881 What |Removed |Added ---------------------------------------------------------------------------- Status|WAITING |RESOLVED Resolution|--- |FIXED