https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58020 Bug 58020 depends on bug 59015, which changed state.
Bug 59015 Summary: I/O of PARAMETER derived type with private component is forbidden https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59015 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED