mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-01 19:23:50 +00:00
31 lines
663 B
Rust
31 lines
663 B
Rust
#![feature(coroutine_trait)]
|
|
#![feature(coroutines, stmt_expr_attributes)]
|
|
#![allow(unused)]
|
|
|
|
use std::ops::Coroutine;
|
|
use std::ops::CoroutineState;
|
|
use std::pin::pin;
|
|
|
|
fn mk_static(s: &str) -> &'static str {
|
|
let mut storage: Option<&'static str> = None;
|
|
|
|
let mut coroutine = pin!(
|
|
#[coroutine]
|
|
|_: &str| {
|
|
let x: &'static str = yield ();
|
|
//~^ ERROR lifetime may not live long enough
|
|
storage = Some(x);
|
|
}
|
|
);
|
|
|
|
coroutine.as_mut().resume(s);
|
|
coroutine.as_mut().resume(s);
|
|
|
|
storage.unwrap()
|
|
}
|
|
|
|
fn main() {
|
|
let s = mk_static(&String::from("hello, world"));
|
|
println!("{s}");
|
|
}
|