https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67491 Bug 67491 depends on bug 92806, which changed state.
Bug 92806 Summary: Suboptimal diagnostic for concept that depends on non-bool value https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92806 What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED