mirror of
https://github.com/rust-lang/rust.git
synced 2026-04-27 18:57:42 +03:00
Jules Bertholet
234df83fe3
Add a warn-by-default `unused_visibility` lint for visibility qualifiers on `const _` declarations - e.g. `pub const _: () = ();`. These have no effect.
17 lines
402 B
Rust
17 lines
402 B
Rust
//@ compile-flags: --crate-type=lib
|
|
//@ check-pass
|
|
|
|
#![allow(useless_ptr_null_checks)]
|
|
|
|
const FOO: &usize = &42;
|
|
|
|
const _: () = assert!(!(FOO as *const usize).is_null());
|
|
|
|
const _: () = assert!(!(42 as *const usize).is_null());
|
|
|
|
const _: () = assert!((0 as *const usize).is_null());
|
|
|
|
const _: () = assert!(std::ptr::null::<usize>().is_null());
|
|
|
|
const _: () = assert!(!("foo" as *const str).is_null());
|