== bar ==
fun Int.bar(c: C) {
    this = c
}
---------------------
               <v0>: {<: [ERROR : C]}   NEW: magic[FAKE_INITIALIZER](c: C) -> <v0>
c              <v1>: *                  NEW: r(c) -> <v1>
this = c       <v2>: *                  NEW: magic[UNSUPPORTED_ELEMENT](this = c|<v1>) -> <v2>
{ this = c }   <v2>: *                  COPY
=====================