== foo ==
fun foo() {
    "before"
    do {
        var a = 2
    } while (a > 0)
    "after"
}
---------------------
L0:
  1 <START>                                                      INIT: in: {} out: {}
  2 mark({ "before" do { var a = 2 } while (a > 0) "after" })
    mark("before")
    r("before") -> <v0>                                                                          USE: in: {} out: {}
  3 mark(do { var a = 2 } while (a > 0))
L2 [loop entry point]:
L4 [body entry point]:
    mark({ var a = 2 })                                          INIT: in: {a=ID} out: {a=ID}
    v(var a = 2)
    r(2) -> <v1>
    w(a|<v1>)
L5 [body exit point]:
L6 [condition entry point]:
    r(a) -> <v2>
    r(0) -> <v3>
    mark(a > 0)
    call(a > 0, compareTo|<v2>, <v3>) -> <v4>
    jt(L2|<v4>)                                                                                  USE: in: {a=READ} out: {a=READ}
L3 [loop exit point]:
    read (Unit)
  2 mark("after")                                                INIT: in: {} out: {}
    r("after") -> <v5>
L1:
  1 <END>
error:
    <ERROR>
sink:
    <SINK>                                                                                       USE: in: {} out: {}
=====================