vlib/v/checker/tests/const_reference_write_err.vv:14:10: error: cannot have mutable reference to const `a_string`
   12 |     }
   13 |     unsafe {
   14 |         ptr := &a_string
      |                ^
   15 |         *ptr = f
   16 |
vlib/v/checker/tests/const_reference_write_err.vv:17:11: error: cannot have mutable reference to const `a_struct`
   15 |         *ptr = f
   16 | 
   17 |         ptr2 := &a_struct
      |                 ^
   18 |         *ptr2 = a
   19 |     }