https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103524 Bug 103524 depends on bug 104993, which changed state.
Bug 104993 Summary: [modules] Missing diagnostic when exporting using-directive https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104993 What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED