-- closure extension

function ext_10((integer, integer) -> integer) : integer -> integer {
  push 10;
  push arg[0];
  cextend 1;
  ret;
}

function app_0(integer -> integer) : integer {
  push 1;
  push arg[0];
  tcall $ 1;
}

function f((integer, integer) -> integer) : integer {
  push arg[0];
  call ext_10;
  tcall app_0;
}

function plus(integer, integer) : integer {
  push arg[1];
  push arg[0];
  add;
  ret;
}

function minus(integer, integer) : integer {
  push arg[1];
  push arg[0];
  sub;
  ret;
}

function mult(integer, integer) : integer {
  push arg[1];
  push arg[0];
  mul;
  ret;
}

function main() {
  calloc plus 0;
  call f;
  trace; -- 11
  pop;
  calloc minus 0;
  call f;
  trace; -- 9
  pop;
  calloc mult 0;
  call f;
  trace; -- 10
  pop;
  push void;
  ret;
}