src/test/ui/unused/useless-comment.rs

   1 #![feature(stmt_expr_attributes)]
   2
   3 #![deny(unused_doc_comments)]
   4
   5 macro_rules! mac {
   6     () => {}
   7 }
   8
   9 /// foo //~ ERROR unused doc comment
  10 mac!();
  11
  12 fn foo() {
  13     /// a //~ ERROR unused doc comment
  14     let x = 12;
  15
  16     /// multi-line //~ unused doc comment
  17     /// doc comment
  18     /// that is unused
  19     match x {
  20         /// c //~ ERROR unused doc comment
  21         1 => {},
  22         _ => {}
  23     }
  24
  25     /// foo //~ ERROR unused doc comment
  26     unsafe {}
  27
  28     #[doc = "foo"] //~ ERROR unused doc comment
  29     #[doc = "bar"] //~ ERROR unused doc comment
  30     3;
  31
  32     /// bar //~ ERROR unused doc comment
  33     mac!();
  34
  35     let x = /** comment */ 47; //~ ERROR unused doc comment
  36
  37     /// dox //~ ERROR unused doc comment
  38     {
  39
  40     }
  41 }
  42
  43 fn main() {
  44     foo();
  45 }