1 // Test that duplicate matcher binding names are caught at declaration time, rather than at macro
2 // invocation time.
3 
4 #![allow(unused_macros)]
5 
6 macro_rules! foo1 {
7     ($a:ident, $a:ident) => {}; //~ERROR duplicate matcher binding
8     ($a:ident, $a:path) => {};  //~ERROR duplicate matcher binding
9 }
10 
11 macro_rules! foo2 {
12     ($a:ident) => {}; // OK
13     ($a:path) => {};  // OK
14 }
15 
16 macro_rules! foo3 {
17     ($a:ident, $($a:ident),*) => {}; //~ERROR duplicate matcher binding
18     ($($a:ident)+ # $($($a:path),+);*) => {}; //~ERROR duplicate matcher binding
19 }
20 
main()21 fn main() {}
22