mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-25 06:56:50 +00:00
20 lines
392 B
Rust
20 lines
392 B
Rust
|
//compile-flags: --crate-type=lib -Clink-dead-code=on
|
||
|
|
// build-pass
|
||
|
|
|
||
|
|
// Make sure that we don't monomorphize the impossible method `<() as Visit>::visit`,
|
||
|
|
// which does not hold under a reveal-all param env.
|
||
|
|
|
||
|
|
pub trait Visit {
|
||
|
|
fn visit() {}
|
||
|
|
}
|
||
|
|
|
||
|
|
pub trait Array {
|
||
|
|
type Element;
|
||
|
|
}
|
||
|
|
|
||
|
|
impl<'a> Visit for () where (): Array<Element = &'a ()> {}
|
||
|
|
|
||
|
|
impl Array for () {
|
||
|
|
type Element = ();
|
||
|
|
}
|