File: unreachable_pub.rs

package info (click to toggle)
rustc-web 1.78.0%2Bdfsg1-2~deb12u3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,245,420 kB
  • sloc: xml: 147,985; javascript: 18,022; sh: 11,083; python: 10,265; ansic: 6,172; cpp: 5,023; asm: 4,390; makefile: 4,269
file content (66 lines) | stat: -rw-r--r-- 2,049 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
//@ check-pass

#![allow(unused)]
#![warn(unreachable_pub)]

mod private_mod {
    // non-leaked `pub` items in private module should be linted
    pub use std::fmt; //~ WARNING unreachable_pub
    pub use std::env::{Args}; // braced-use has different item spans than unbraced
    //~^ WARNING unreachable_pub

    pub struct Hydrogen { //~ WARNING unreachable_pub
        // `pub` struct fields, too
        pub neutrons: usize, //~ WARNING unreachable_pub
        // (... but not more-restricted fields)
        pub(crate) electrons: usize
    }
    impl Hydrogen {
        // impls, too
        pub fn count_neutrons(&self) -> usize { self.neutrons } //~ WARNING unreachable_pub
        pub(crate) fn count_electrons(&self) -> usize { self.electrons }
    }
    impl Clone for Hydrogen {
        fn clone(&self) -> Hydrogen {
            Hydrogen { neutrons: self.neutrons, electrons: self.electrons }
        }
    }

    pub enum Helium {} //~ WARNING unreachable_pub
    pub union Lithium { c1: usize, c2: u8 } //~ WARNING unreachable_pub
    pub fn beryllium() {} //~ WARNING unreachable_pub
    pub trait Boron {} //~ WARNING unreachable_pub
    pub const CARBON: usize = 1; //~ WARNING unreachable_pub
    pub static NITROGEN: usize = 2; //~ WARNING unreachable_pub
    pub type Oxygen = bool; //~ WARNING unreachable_pub

    macro_rules! define_empty_struct_with_visibility {
        ($visibility: vis, $name: ident) => { $visibility struct $name {} }
        //~^ WARNING unreachable_pub
    }
    define_empty_struct_with_visibility!(pub, Fluorine);

    extern "C" {
        pub fn catalyze() -> bool; //~ WARNING unreachable_pub
    }

    // items leaked through signatures (see `get_neon` below) are OK
    pub struct Neon {}

    // crate-visible items are OK
    pub(crate) struct Sodium {}
}

pub mod public_mod {
    // module is public: these are OK, too
    pub struct Magnesium {}
    pub(crate) struct Aluminum {}
}

pub fn get_neon() -> private_mod::Neon {
    private_mod::Neon {}
}

fn main() {
    let _ = get_neon();
}