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