| // Test equality constraints in a where clause where the type being |
| // equated appears in a supertrait. |
| |
| pub trait Vehicle { |
| type Color; |
| |
| fn go(&self) { } |
| } |
| |
| pub trait Box { |
| type Color; |
| // |
| fn mail(&self) { } |
| } |
| |
| pub trait BoxCar : Box + Vehicle { |
| } |
| |
| fn dent<C:BoxCar>(c: C, color: C::Color) { |
| //~^ ERROR ambiguous associated type `Color` in bounds of `C` |
| } |
| |
| fn dent_object<COLOR>(c: dyn BoxCar<Color=COLOR>) { |
| //~^ ERROR ambiguous associated type |
| //~| ERROR the value of the associated types |
| } |
| |
| fn paint<C:BoxCar>(c: C, d: C::Color) { |
| //~^ ERROR ambiguous associated type `Color` in bounds of `C` |
| } |
| |
| fn dent_object_2<COLOR>(c: dyn BoxCar) where <dyn BoxCar as Vehicle>::Color = COLOR { |
| //~^ ERROR the value of the associated types |
| //~| ERROR equality constraints are not yet supported in `where` clauses |
| } |
| |
| fn dent_object_3<X, COLOR>(c: X) |
| where X: BoxCar, |
| X: Vehicle<Color = COLOR>, |
| X: Box<Color = COLOR> |
| {} // OK! |
| |
| pub fn main() { } |