15 lines
443 B
Rust
15 lines
443 B
Rust
// revisions: old next
|
|
//[next] compile-flags: -Ztrait-solver=next
|
|
|
|
// Tests that we consider `Box<U>: !Sugar` to be ambiguous, even
|
|
// though we see no impl of `Sugar` for `Box`. Therefore, an overlap
|
|
// error is reported for the following pair of impls (#23516).
|
|
|
|
pub trait Sugar { fn dummy(&self) { } }
|
|
pub trait Sweet { fn dummy(&self) { } }
|
|
impl<T:Sugar> Sweet for T { }
|
|
impl<U:Sugar> Sweet for Box<U> { }
|
|
//~^ ERROR E0119
|
|
|
|
fn main() { }
|