https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67491 Bug 67491 depends on bug 67579, which changed state.
Bug 67579 Summary: [concepts] Memoization for constraint expressions https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67579 What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED