rust/tests/ui/coherence/coherence-overlap-downstream.rs
2023-12-14 15:22:37 +01:00

21 lines
436 B
Rust

// revisions: old next
//[next] compile-flags: -Znext-solver
// Tests that we consider `T: Sugar + Fruit` to be ambiguous, even
// though no impls are found.
pub trait Sugar {}
pub trait Fruit {}
pub trait Sweet {}
impl<T:Sugar> Sweet for T { }
impl<T:Fruit> Sweet for T { }
//~^ ERROR E0119
pub trait Foo<X> {}
pub trait Bar<X> {}
impl<X, T> Foo<X> for T where T: Bar<X> {}
impl<X> Foo<X> for i32 {}
//~^ ERROR E0119
fn main() { }