src/test/ui/macros/issue-61053-duplicate-binder.rs

   1 #![deny(meta_variable_misuse)]
   2
   3 macro_rules! foo {
   4     () => {};
   5     (error) => {
   6         macro_rules! bar {
   7             ($x:tt $x:tt) => { $x }; //~ ERROR duplicate matcher binding
   8         }
   9     };
  10 }
  11
  12 fn main() {
  13     foo!();
  14 }