mirror of https://github.com/rust-lang/rust
28 lines
882 B
Rust
28 lines
882 B
Rust
//@ check-pass
|
||
|
||
#![warn(unused_parens)]
|
||
|
||
macro_rules! the_worship_the_heart_lifts_above {
|
||
( @as_expr, $e:expr) => { $e };
|
||
( @generate_fn, $name:tt) => {
|
||
#[allow(dead_code)] fn the_moth_for_the_star<'a>() -> Option<&'a str> {
|
||
Some(the_worship_the_heart_lifts_above!( @as_expr, $name ))
|
||
}
|
||
};
|
||
( $name:ident ) => { the_worship_the_heart_lifts_above!( @generate_fn, (stringify!($name))); }
|
||
// ↑ Notably, this does 𝘯𝘰𝘵 warn: we're declining to lint unused parens in
|
||
// function/method arguments inside of nested macros because of situations
|
||
// like those reported in Issue #47775
|
||
}
|
||
|
||
macro_rules! and_the_heavens_reject_not {
|
||
() => {
|
||
#[allow(dead_code)] fn the_night_for_the_morrow() -> Option<isize> { Some((2)) }
|
||
}
|
||
}
|
||
|
||
the_worship_the_heart_lifts_above!(rah);
|
||
and_the_heavens_reject_not!();
|
||
|
||
fn main() {}
|