tests/ui/proc-macro/inner-attrs.rs

   1 // gate-test-custom_inner_attributes
   2 // compile-flags: -Z span-debug --error-format human
   3 // aux-build:test-macros.rs
   4 // edition:2018
   5
   6 #![feature(custom_inner_attributes)]
   7 #![feature(proc_macro_hygiene)]
   8 #![feature(stmt_expr_attributes)]
   9 #![feature(rustc_attrs)]
  10
  11 #![no_std] // Don't load unnecessary hygiene information from std
  12 extern crate std;
  13
  14 #[macro_use]
  15 extern crate test_macros;
  16
  17 #[print_target_and_args(first)]
  18 #[print_target_and_args(second)]
  19 fn foo() {
  20     #![print_target_and_args(third)]
  21     #![print_target_and_args(fourth)]
  22 }
  23
  24 #[print_target_and_args(mod_first)]
  25 #[print_target_and_args(mod_second)]
  26 mod inline_mod {
  27     #![print_target_and_args(mod_third)]
  28     #![print_target_and_args(mod_fourth)]
  29 }
  30
  31 struct MyStruct {
  32     field: bool
  33 }
  34
  35 #[derive(Print)]
  36 struct MyDerivePrint {
  37     field: [u8; {
  38         match true {
  39             _ => {
  40                 #![cfg_attr(not(FALSE), rustc_dummy(third))]
  41                 true
  42             }
  43         };
  44         0
  45     }]
  46 }
  47
  48 fn bar() {
  49     #[print_target_and_args(tuple_attrs)] (
  50         3, 4, {
  51             #![cfg_attr(not(FALSE), rustc_dummy(innermost))]
  52             5
  53         }
  54     );
  55
  56     #[print_target_and_args(tuple_attrs)] (
  57         3, 4, {
  58             #![cfg_attr(not(FALSE), rustc_dummy(innermost))]
  59             5
  60         }
  61     );
  62
  63     for _ in &[true] {
  64         #![print_attr] //~ ERROR expected non-macro inner attribute
  65     }
  66
  67     let _ = {
  68         #![print_attr] //~ ERROR expected non-macro inner attribute
  69     };
  70
  71     let _ = async {
  72         #![print_attr] //~ ERROR expected non-macro inner attribute
  73     };
  74
  75     {
  76         #![print_attr] //~ ERROR expected non-macro inner attribute
  77     };
  78 }
  79
  80
  81 extern {
  82     fn weird_extern() {
  83         #![print_target_and_args_consume(tenth)]
  84     }
  85 }
  86
  87 fn main() {}