const c:int = 3

fun f<<n:int>>() returns (y:int)
let
  y = n + 3;
tel

fun g<<m:int>>() returns (y:int)
var x:int;
let
  x = m + f<<2>>();
  y = f<<m>>();
tel

fun h() returns (y:int)
let
  y = c + g<<c>>();
tel