nested-types.cfa:100:25: warning: Compiled nested-types.cfa:86:1 error: Use of undefined global type Z nested-types.cfa:87:1 error: Qualified type requires an aggregate on the left, but has: signed int nested-types.cfa:88:1 error: Undefined type in qualified type: Qualified Type: instance of struct S with body 1 instance of type Z (not function type)