https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67491 Bug 67491 depends on bug 90033, which changed state.
Bug 90033 Summary: [concepts] ICE segfault evaluating a requires clause that transitively depends on itself https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90033 What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED