vlib/v/checker/tests/generic_type_name_in_non_generic_function.vv:3:10: error: undefined ident: `A`
    1 | fn main() {
    2 |     c := u8(`D`)
    3 |     if c >= A && c <= Z {
      |             ^
    4 |         println('yes')
    5 |     } else {
