(* pour debugger
   set arguments -v test/good/t9.ept *)

node f(x,z:int) returns (o1,o2:int)
  let
    switch (x = z)
      | true var o12: int; o22: int;
             do (o12, o22) = (1, 2); o1 = o12; o2 = o22;
      | false do (o2, o1) = (3, 3);
    end
  tel