== foo ==
fun foo(x: Int) {
    val (a, b) = x
    a
}
---------------------
                       <v0>: Int                                           NEW: magic[FAKE_INITIALIZER](x: Int) -> <v0>
                       <v2>: {<: [Error type: component1() return type]}   NEW: magic[UNRESOLVED_CALL](a|<v1>) -> <v2>
                       <v3>: {<: [Error type: component2() return type]}   NEW: magic[UNRESOLVED_CALL](b|<v1>) -> <v3>
x                      <v1>: *                                             NEW: r(x) -> <v1>
a                      <v4>: *                                             NEW: r(a) -> <v4>
{ val (a, b) = x a }   <v4>: *                                             COPY
=====================