https://gcc.gnu.org/bugzilla/show_bug.cgi?id=20585 Bug 20585 depends on bug 31298, which changed state.
Bug 31298 Summary: [F03] use mod, operator(+) => operator(.userOp.) not supported https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31298 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |INVALID