https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67491 Bug 67491 depends on bug 79686, which changed state.
Bug 79686 Summary: Variadic template expansion into concept with leading parameters https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79686 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |DUPLICATE