17 lines
431 B
Rust
17 lines
431 B
Rust
//@ revisions: old next
|
|
//@[next] compile-flags: -Znext-solver
|
|
|
|
// 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 {}
|
|
|
|
struct Cake<X>(X);
|
|
|
|
impl<T:Sugar> Cake<T> { fn dummy(&self) { } }
|
|
//~^ ERROR E0592
|
|
impl<U:Sugar> Cake<Box<U>> { fn dummy(&self) { } }
|
|
|
|
fn main() { }
|