== short ==
fun short() = 1
---------------------
L0:
  1 <START>
    r(1) -> <v0>
    ret(*|<v0>) L1
L1:
    <END>             NEXT:[<SINK>]
error:
    <ERROR>           PREV:[]
sink:
    <SINK>            PREV:[<ERROR>, <END>]
=====================