vlib/v/checker/tests/generics_undefined_operation.vv:12:5: error: undefined operation `V2d[int]` * `V2d[int]`
   10 |     v3 := V2d[int]{4, 6}
   11 | 
   12 |     if v1 * v2 == v3 {
      |        ~~~~~~~
   13 |     }
   14 | }