20 lines
508 B
Rust
20 lines
508 B
Rust
|
#![feature(stmt_expr_attributes)]
|
||
|
|
|
||
|
|
fn foo() -> String {
|
||
|
|
#[cfg(feature = "validation")]
|
||
|
|
[1, 2, 3].iter().map(|c| c.to_string()).collect::<String>() //~ ERROR expected `;`, found `#`
|
||
|
|
#[cfg(not(feature = "validation"))]
|
||
|
|
String::new()
|
||
|
|
}
|
||
|
|
|
||
|
|
fn bar() -> String {
|
||
|
|
#[attr]
|
||
|
|
[1, 2, 3].iter().map(|c| c.to_string()).collect::<String>() //~ ERROR expected `;`, found `#`
|
||
|
|
#[attr] //~ ERROR cannot find attribute `attr` in this scope
|
||
|
|
String::new()
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
println!("{}", foo());
|
||
|
|
}
|