mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-23 15:23:46 +00:00
34 lines
442 B
Rust
34 lines
442 B
Rust
// run-pass
|
|
#![allow(non_camel_case_types)]
|
|
|
|
trait clam<A> {
|
|
fn chowder(&self, y: A);
|
|
}
|
|
|
|
#[derive(Copy, Clone)]
|
|
struct foo<A> {
|
|
x: A,
|
|
}
|
|
|
|
impl<A> clam<A> for foo<A> {
|
|
fn chowder(&self, _y: A) {
|
|
}
|
|
}
|
|
|
|
fn foo<A>(b: A) -> foo<A> {
|
|
foo {
|
|
x: b
|
|
}
|
|
}
|
|
|
|
fn f<A>(x: Box<dyn clam<A>>, a: A) {
|
|
x.chowder(a);
|
|
}
|
|
|
|
pub fn main() {
|
|
|
|
let c = foo(42);
|
|
let d: Box<dyn clam<isize>> = Box::new(c) as Box<dyn clam<isize>>;
|
|
f(d, c.x);
|
|
}
|