rust/tests/ui/builtin-superkinds/builtin-superkinds-phantom-...

19 lines
392 B
Rust

//@ run-pass
#![allow(dead_code)]
// Tests that even when a type parameter doesn't implement a required
// super-builtin-kind of a trait, if the type parameter is never used,
// the type can implement the trait anyway.
//@ pretty-expanded FIXME #23616
use std::marker;
trait Foo : Send { }
struct X<T> { marker: marker::PhantomData<T> }
impl<T:Send> Foo for X<T> { }
pub fn main() { }