https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67491 Bug 67491 depends on bug 87441, which changed state.
Bug 87441 Summary: [concepts] Found compiler internal error: in tsubst at cp/pt.c:13657 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87441 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED