https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67491 Bug 67491 depends on bug 68437, which changed state.
Bug 68437 Summary: [concepts] fold expression, pack expansion, and deduced constraint requirement https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68437 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED