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// check-pass
#![feature(stmt_expr_attributes)]
#![warn(unused_attributes)] //~ NOTE the lint level is defined here
fn main() {
// fold_stmt (Item)
#[allow(dead_code)]
#[derive(Debug)] // should not warn
struct Foo;
// fold_stmt (Mac)
#[derive(Debug)]
//~^ WARN `#[derive]` does nothing on macro invocations
//~| NOTE this may become a hard error in a future release
println!("Hello, world!");
// fold_stmt (Semi)
#[derive(Debug)] //~ WARN unused attribute
"Hello, world!";
// fold_stmt (Local)
#[derive(Debug)] //~ WARN unused attribute
let _ = "Hello, world!";
// visit_expr
let _ = #[derive(Debug)] "Hello, world!";
//~^ WARN unused attribute
let _ = [
// filter_map_expr
#[derive(Debug)] //~ WARN unused attribute
"Hello, world!"
];
}
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