export accumRes, bugLNG63, bugLNG63_2

func toOpt(s: string) -> ?string:
  str: *string
  str <<- s
  <- str

func accumRes() -> *?string:
  res_accum: *?string
  a <- toOpt("a")
  res_accum <<- a
  res_accum <- toOpt("b")
  res_accum <<- nil
  <- res_accum

func returnCanStream() -> string:
    status: *string
    status <<- "ok"
    stat = status!
    <- stat

service Op1("op"):
  array_length(array: []string) -> u32

func bugLNG63() -> string:
  res <- returnCanStream()
  <- res

func returnMultipleStreamResults() -> string, []string, []string, []string:
    status: *string
    status <<- "ok"
    stat = status!
    <- stat, status, [status!, stat], [status!, "no", status!]

func bugLNG63_2() -> string, []string, []string:
    res, res2, res3, res4 <- returnMultipleStreamResults()
    <- res, res2, res4

func bugLNG63_3() -> string, u32, []u32:
   status: *string
   status <<- "ok"
   stat = status!
   num: *u32
   num <<- 2
   res = [Op1.array_length(status), num!]
   <- status!, Op1.array_length(status), [Op1.array_length(status), 3, num!]