https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89180 Bug 89180 depends on bug 90881, which changed state.
Bug 90881 Summary: -Wunused-value false positive in SFINAE context https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90881 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED
