rust/tests/ui/impl-header-lifetime-elision/ref-underscore.rs
2024-02-16 20:02:50 +00:00

31 lines
471 B
Rust

// Test that `impl MyTrait for &i32` works and is equivalent to any lifetime.
//@ run-pass
#![allow(warnings)]
trait MyTrait { }
impl MyTrait for &i32 {
}
fn impls_my_trait<T: MyTrait>() { }
fn impls_my_trait_val<T: MyTrait>(_: T) {
impls_my_trait::<T>();
}
fn random_where_clause()
where for<'a> &'a i32: MyTrait { }
fn main() {
let x = 22;
let f = &x;
impls_my_trait_val(f);
impls_my_trait::<&'static i32>();
random_where_clause();
}