mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-25 16:24:46 +00:00
12 lines
201 B
Rust
12 lines
201 B
Rust
macro_rules! foo {
|
|
($p:expr) => {
|
|
if let $p = Some(42) {
|
|
return;
|
|
}
|
|
};
|
|
}
|
|
|
|
fn main() {
|
|
foo!(Some(3)); //~ ERROR arbitrary expressions aren't allowed in patterns
|
|
}
|