src/test/ui/lint/unreachable_pub.rs

   1 // check-pass
   2
   3 #![feature(crate_visibility_modifier)]
   4
   5 #![allow(unused)]
   6 #![warn(unreachable_pub)]
   7
   8 mod private_mod {
   9     // non-leaked `pub` items in private module should be linted
  10     pub use std::fmt; //~ WARNING unreachable_pub
  11     pub use std::env::{Args}; // braced-use has different item spans than unbraced
  12     //~^ WARNING unreachable_pub
  13
  14     pub struct Hydrogen { //~ WARNING unreachable_pub
  15         // `pub` struct fields, too
  16         pub neutrons: usize, //~ WARNING unreachable_pub
  17         // (... but not more-restricted fields)
  18         crate electrons: usize
  19     }
  20     impl Hydrogen {
  21         // impls, too
  22         pub fn count_neutrons(&self) -> usize { self.neutrons } //~ WARNING unreachable_pub
  23         crate fn count_electrons(&self) -> usize { self.electrons }
  24     }
  25
  26     pub enum Helium {} //~ WARNING unreachable_pub
  27     pub union Lithium { c1: usize, c2: u8 } //~ WARNING unreachable_pub
  28     pub fn beryllium() {} //~ WARNING unreachable_pub
  29     pub trait Boron {} //~ WARNING unreachable_pub
  30     pub const CARBON: usize = 1; //~ WARNING unreachable_pub
  31     pub static NITROGEN: usize = 2; //~ WARNING unreachable_pub
  32     pub type Oxygen = bool; //~ WARNING unreachable_pub
  33
  34     macro_rules! define_empty_struct_with_visibility {
  35         ($visibility: vis, $name: ident) => { $visibility struct $name {} }
  36         //~^ WARNING unreachable_pub
  37     }
  38     define_empty_struct_with_visibility!(pub, Fluorine);
  39
  40     extern {
  41         pub fn catalyze() -> bool; //~ WARNING unreachable_pub
  42     }
  43
  44     // items leaked through signatures (see `get_neon` below) are OK
  45     pub struct Neon {}
  46
  47     // crate-visible items are OK
  48     crate struct Sodium {}
  49 }
  50
  51 pub mod public_mod {
  52     // module is public: these are OK, too
  53     pub struct Magnesium {}
  54     crate struct Aluminum {}
  55 }
  56
  57 pub fn get_neon() -> private_mod::Neon {
  58     private_mod::Neon {}
  59 }
  60
  61 fn main() {
  62     let _ = get_neon();
  63 }