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#![feature(optimize_attribute)]
#![feature(stmt_expr_attributes)]
#![deny(unused_attributes)]
#![allow(dead_code)]
//@ edition: 2018
#[optimize(speed)] //~ ERROR attribute applied to an invalid target
struct F;
fn invalid() {
#[optimize(speed)] //~ ERROR attribute applied to an invalid target
{
1
};
}
#[optimize(speed)]
fn valid() {}
#[optimize(speed)] //~ ERROR attribute applied to an invalid target
mod valid_module {}
#[optimize(speed)] //~ ERROR attribute applied to an invalid target
impl F {}
fn main() {
let _ = #[optimize(speed)]
(|| 1);
}
use std::future::Future;
fn async_block() -> impl Future<Output = ()> {
#[optimize(speed)]
async { }
}
#[optimize(speed)]
async fn async_fn() {
()
}
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