vlib/v/checker/tests/fn_args.vv:1:8: notice: unused parameter: `a`
    1 | fn uu8(a u8) {}
      |        ^
    2 | 
    3 | fn arr(a []int) {}
vlib/v/checker/tests/fn_args.vv:3:8: notice: unused parameter: `a`
    1 | fn uu8(a u8) {}
    2 | 
    3 | fn arr(a []int) {}
      |        ^
    4 | 
    5 | fn fun(a fn (int)) {}
vlib/v/checker/tests/fn_args.vv:5:8: notice: unused parameter: `a`
    3 | fn arr(a []int) {}
    4 | 
    5 | fn fun(a fn (int)) {}
      |        ^
    6 | 
    7 | fn basic() {
vlib/v/checker/tests/fn_args.vv:18:6: notice: unused parameter: `p`
   16 | }
   17 | 
   18 | fn f(p &S1) {}
      |      ^
   19 | 
   20 | fn ptr() {
vlib/v/checker/tests/fn_args.vv:9:6: error: cannot use `&int` as `u8` in argument 1 to `uu8`
    7 | fn basic() {
    8 |     v := 4
    9 |     uu8(&v)
      |         ~~
   10 |     arr([5.0]!)
   11 |     fun(fn (i &int) {})
vlib/v/checker/tests/fn_args.vv:10:6: error: cannot use `[1]f64` as `[]int` in argument 1 to `arr`
    8 |     v := 4
    9 |     uu8(&v)
   10 |     arr([5.0]!)
      |         ~~~~~~
   11 |     fun(fn (i &int) {})
   12 |     fun(fn (ii ...int) {})
vlib/v/checker/tests/fn_args.vv:11:6: error: cannot use `fn (&int)` as `fn (int)` in argument 1 to `fun`
    9 |     uu8(&v)
   10 |     arr([5.0]!)
   11 |     fun(fn (i &int) {})
      |         ~~~~~~~~~~~~~~
   12 |     fun(fn (ii ...int) {})
   13 | }
Details: expected argument 1 to be NOT a pointer, but the passed argument 1 is a pointer
vlib/v/checker/tests/fn_args.vv:12:6: error: cannot use `fn (...int)` as `fn (int)` in argument 1 to `fun`
   10 |     arr([5.0]!)
   11 |     fun(fn (i &int) {})
   12 |     fun(fn (ii ...int) {})
      |         ~~~~~~~~~~~~~~~~~
   13 | }
   14 |
vlib/v/checker/tests/fn_args.vv:22:4: error: cannot use `int` as `&S1` in argument 1 to `f`
   20 | fn ptr() {
   21 |     v := 4
   22 |     f(v)
      |       ^
   23 | }