https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82173 Bug 82173 depends on bug 86268, which changed state.
Bug 86268 Summary: [9.0] Error on correct code with PDTs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86268 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED