vlib/v/checker/tests/fn_var.vv:1:10: error: missing return at the end of an anonymous function
    1 | mut f := fn (i int) u8 {}
      |          ~~~~~~~~~~~~~~~~
    2 | f = 4
    3 | mut p := &f
vlib/v/checker/tests/fn_var.vv:2:5: error: cannot assign to `f`: expected `fn (int) u8`, not `int literal`
    1 | mut f := fn (i int) u8 {}
    2 | f = 4
      |     ^
    3 | mut p := &f
    4 | p = &[f]
vlib/v/checker/tests/fn_var.vv:4:5: error: cannot assign to `p`: expected `&fn (int) u8`, not `&[]fn (int) u8`
    2 | f = 4
    3 | mut p := &f
    4 | p = &[f]
      |     ^
    5 | _ = p
    6 | i := 0
vlib/v/checker/tests/fn_var.vv:9:10: error: undefined ident: `i`
    7 | println(i)
    8 | f = fn (mut a []int) {
    9 |     println(i)
      |             ^
   10 | }
vlib/v/checker/tests/fn_var.vv:8:5: error: cannot assign to `f`: expected `fn (int) u8`, not `fn (mut []int)`
    6 | i := 0
    7 | println(i)
    8 | f = fn (mut a []int) {
      |     ~~~~~~~~~~~~~~~~~~
    9 |     println(i)
   10 | }