rust/tests/ui/ref_as_ptr.rs
Marcin Serwin a3baebcb31
Add ref_as_ptr lint
Author:    Marcin Serwin <marcin.serwin0@protonmail.com>
2024-02-04 17:38:09 +01:00

111 lines
2.5 KiB
Rust

#![warn(clippy::ref_as_ptr)]
#![allow(clippy::unnecessary_mut_passed)]
fn main() {
let _ = &1u8 as *const _;
let _ = &2u32 as *const u32;
let _ = &3.0f64 as *const f64;
let _ = &4 as *const _ as *const f32;
let _ = &5.0f32 as *const f32 as *const u32;
let _ = &mut 6u8 as *const _;
let _ = &mut 7u32 as *const u32;
let _ = &mut 8.0f64 as *const f64;
let _ = &mut 9 as *const _ as *const f32;
let _ = &mut 10.0f32 as *const f32 as *const u32;
let _ = &mut 11u8 as *mut _;
let _ = &mut 12u32 as *mut u32;
let _ = &mut 13.0f64 as *mut f64;
let _ = &mut 14 as *mut _ as *const f32;
let _ = &mut 15.0f32 as *mut f32 as *const u32;
let _ = &1u8 as *const _;
let _ = &2u32 as *const u32;
let _ = &3.0f64 as *const f64;
let _ = &4 as *const _ as *const f32;
let _ = &5.0f32 as *const f32 as *const u32;
let val = 1;
let _ = &val as *const _;
let _ = &val as *const i32;
let _ = &val as *const _ as *const f32;
let _ = &val as *const i32 as *const f64;
let mut val: u8 = 2;
let _ = &mut val as *mut u8;
let _ = &mut val as *mut _;
let _ = &mut val as *const u8;
let _ = &mut val as *const _;
let _ = &mut val as *const u8 as *const f64;
let _: *const Option<u8> = &mut val as *const _ as *const _;
let _ = &std::array::from_fn(|i| i * i) as *const [usize; 7];
let _ = &mut std::array::from_fn(|i| i * i) as *const [usize; 8];
let _ = &mut std::array::from_fn(|i| i * i) as *mut [usize; 9];
}
#[clippy::msrv = "1.75"]
fn _msrv_1_75() {
let val = &42_i32;
let mut_val = &mut 42_i32;
// `std::ptr::from_{ref, mut}` was stabilized in 1.76. Do not lint this
let _ = val as *const i32;
let _ = mut_val as *mut i32;
}
#[clippy::msrv = "1.76"]
fn _msrv_1_76() {
let val = &42_i32;
let mut_val = &mut 42_i32;
let _ = val as *const i32;
let _ = mut_val as *mut i32;
}
fn foo(val: &[u8]) {
let _ = val as *const _;
let _ = val as *const [u8];
}
fn bar(val: &mut str) {
let _ = val as *mut _;
let _ = val as *mut str;
}
struct X<'a>(&'a i32);
impl<'a> X<'a> {
fn foo(&self) -> *const i64 {
self.0 as *const _ as *const _
}
fn bar(&mut self) -> *const i64 {
self.0 as *const _ as *const _
}
}
struct Y<'a>(&'a mut i32);
impl<'a> Y<'a> {
fn foo(&self) -> *const i64 {
self.0 as *const _ as *const _
}
fn bar(&mut self) -> *const i64 {
self.0 as *const _ as *const _
}
fn baz(&mut self) -> *const i64 {
self.0 as *mut _ as *mut _
}
}