src/test/ui/lint/unreachable_pub.rs

   1 // check-pass
   2
   3 #![allow(unused)]
   4 #![warn(unreachable_pub)]
   5
   6 mod private_mod {
   7     // non-leaked `pub` items in private module should be linted
   8     pub use std::fmt; //~ WARNING unreachable_pub
   9     pub use std::env::{Args}; // braced-use has different item spans than unbraced
  10     //~^ WARNING unreachable_pub
  11
  12     pub struct Hydrogen { //~ WARNING unreachable_pub
  13         // `pub` struct fields, too
  14         pub neutrons: usize, //~ WARNING unreachable_pub
  15         // (... but not more-restricted fields)
  16         pub(crate) electrons: usize
  17     }
  18     impl Hydrogen {
  19         // impls, too
  20         pub fn count_neutrons(&self) -> usize { self.neutrons } //~ WARNING unreachable_pub
  21         pub(crate) fn count_electrons(&self) -> usize { self.electrons }
  22     }
  23     impl Clone for Hydrogen {
  24         fn clone(&self) -> Hydrogen {
  25             Hydrogen { neutrons: self.neutrons, electrons: self.electrons }
  26         }
  27     }
  28
  29     pub enum Helium {} //~ WARNING unreachable_pub
  30     pub union Lithium { c1: usize, c2: u8 } //~ WARNING unreachable_pub
  31     pub fn beryllium() {} //~ WARNING unreachable_pub
  32     pub trait Boron {} //~ WARNING unreachable_pub
  33     pub const CARBON: usize = 1; //~ WARNING unreachable_pub
  34     pub static NITROGEN: usize = 2; //~ WARNING unreachable_pub
  35     pub type Oxygen = bool; //~ WARNING unreachable_pub
  36
  37     macro_rules! define_empty_struct_with_visibility {
  38         ($visibility: vis, $name: ident) => { $visibility struct $name {} }
  39         //~^ WARNING unreachable_pub
  40     }
  41     define_empty_struct_with_visibility!(pub, Fluorine);
  42
  43     extern "C" {
  44         pub fn catalyze() -> bool; //~ WARNING unreachable_pub
  45     }
  46
  47     // items leaked through signatures (see `get_neon` below) are OK
  48     pub struct Neon {}
  49
  50     // crate-visible items are OK
  51     pub(crate) struct Sodium {}
  52 }
  53
  54 pub mod public_mod {
  55     // module is public: these are OK, too
  56     pub struct Magnesium {}
  57     pub(crate) struct Aluminum {}
  58 }
  59
  60 pub fn get_neon() -> private_mod::Neon {
  61     private_mod::Neon {}
  62 }
  63
  64 fn main() {
  65     let _ = get_neon();
  66 }