src/test/ui/macros/duplicate-builtin.rs

   1 // compile-flags:--crate-type lib
   2 #![feature(decl_macro)]
   3 #![feature(rustc_attrs)]
   4
   5 #[rustc_builtin_macro]
   6 pub macro test($item:item) {
   7 //~^ NOTE previously defined
   8     /* compiler built-in */
   9 }
  10
  11 mod inner {
  12     #[rustc_builtin_macro]
  13     pub macro test($item:item) {
  14     //~^ ERROR attempted to define built-in macro more than once [E0773]
  15         /* compiler built-in */
  16     }
  17 }