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// 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) { }
}
fn a<C:Vehicle+Box>(_: C::Color) {
//~^ ERROR ambiguous associated type `Color` in bounds of `C`
}
fn b<C>(_: C::Color) where C : Vehicle+Box {
//~^ ERROR ambiguous associated type `Color` in bounds of `C`
}
fn c<C>(_: C::Color) where C : Vehicle, C : Box {
//~^ ERROR ambiguous associated type `Color` in bounds of `C`
}
struct D<X>(X);
impl<X> D<X> where X : Vehicle {
fn d(&self, _: X::Color) where X : Box { }
//~^ ERROR ambiguous associated type `Color` in bounds of `X`
}
trait E<X:Vehicle> {
fn e(&self, _: X::Color) where X : Box;
//~^ ERROR ambiguous associated type `Color` in bounds of `X`
fn f(&self, _: X::Color) where X : Box { }
//~^ ERROR ambiguous associated type `Color` in bounds of `X`
}
pub fn main() { }
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