https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67491 Bug 67491 depends on bug 68394, which changed state.
Bug 68394 Summary: [concepts] segfault in valid code https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68394 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |DUPLICATE