blob: 570191d2c90ae649a800a55eea34de4e244fb55f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
// run-pass
#![allow(unused_macro_rules)]
macro_rules! m {
($e:expr) => {
"expr includes attr"
};
(#[$attr:meta] $e:expr) => {
"expr excludes attr"
}
}
macro_rules! n {
(#[$attr:meta] $e:expr) => {
"expr excludes attr"
};
($e:expr) => {
"expr includes attr"
}
}
fn main() {
assert_eq!(m!(#[attr] 1), "expr includes attr");
assert_eq!(n!(#[attr] 1), "expr excludes attr");
}
|