vlib/v/checker/tests/array_voidptr_assign_err.vv:2:6: warning: unused variable: `a`
    1 | fn main() {
    2 |     mut a := []int{}
      |         ^
    3 |     a = unsafe { nil }
    4 |
vlib/v/checker/tests/array_voidptr_assign_err.vv:3:6: error: cannot assign to `a`: expected `[]int`, not `voidptr`
    1 | fn main() {
    2 |     mut a := []int{}
    3 |     a = unsafe { nil }
      |         ~~~~~~
    4 | 
    5 |     // vfmt off
vlib/v/checker/tests/array_voidptr_assign_err.vv:6:6: error: cannot assign to `a`: expected `[]int`, not `voidptr`
    4 | 
    5 |     // vfmt off
    6 |     a = voidptr(0)
      |         ~~~~~~~~~~
    7 | }