rust/tests/ui/codegen/mono-impossible-2.rs

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 = ();
}