mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-24 13:43:17 +00:00
116 lines
2.5 KiB
Rust
116 lines
2.5 KiB
Rust
#![warn(clippy::ref_as_ptr)]
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#![allow(clippy::unnecessary_mut_passed, clippy::needless_lifetimes)]
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fn f<T>(_: T) {}
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fn main() {
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f(&1u8 as *const _);
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f(&2u32 as *const u32);
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f(&3.0f64 as *const f64);
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f(&4 as *const _ as *const f32);
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f(&5.0f32 as *const f32 as *const u32);
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f(&mut 6u8 as *const _);
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f(&mut 7u32 as *const u32);
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f(&mut 8.0f64 as *const f64);
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f(&mut 9 as *const _ as *const f32);
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f(&mut 10.0f32 as *const f32 as *const u32);
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f(&mut 11u8 as *mut _);
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f(&mut 12u32 as *mut u32);
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f(&mut 13.0f64 as *mut f64);
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f(&mut 14 as *mut _ as *const f32);
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f(&mut 15.0f32 as *mut f32 as *const u32);
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f(&1u8 as *const _);
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f(&2u32 as *const u32);
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f(&3.0f64 as *const f64);
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f(&4 as *const _ as *const f32);
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f(&5.0f32 as *const f32 as *const u32);
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let val = 1;
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f(&val as *const _);
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f(&val as *const i32);
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f(&val as *const _ as *const f32);
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f(&val as *const i32 as *const f64);
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let mut val: u8 = 2;
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f(&mut val as *mut u8);
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f(&mut val as *mut _);
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f(&mut val as *const u8);
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f(&mut val as *const _);
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f(&mut val as *const u8 as *const f64);
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f::<*const Option<u8>>(&mut val as *const _ as *const _);
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f(&std::array::from_fn(|i| i * i) as *const [usize; 7]);
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f(&mut std::array::from_fn(|i| i * i) as *const [usize; 8]);
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f(&mut std::array::from_fn(|i| i * i) as *mut [usize; 9]);
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let _ = &String::new() as *const _;
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let _ = &mut String::new() as *mut _;
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const FOO: *const String = &String::new() as *const _;
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}
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#[clippy::msrv = "1.75"]
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fn _msrv_1_75() {
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let val = &42_i32;
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let mut_val = &mut 42_i32;
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// `std::ptr::from_{ref, mut}` was stabilized in 1.76. Do not lint this
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f(val as *const i32);
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f(mut_val as *mut i32);
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}
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#[clippy::msrv = "1.76"]
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fn _msrv_1_76() {
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let val = &42_i32;
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let mut_val = &mut 42_i32;
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f(val as *const i32);
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f(mut_val as *mut i32);
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}
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fn foo(val: &[u8]) {
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f(val as *const _);
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f(val as *const [u8]);
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}
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fn bar(val: &mut str) {
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f(val as *mut _);
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f(val as *mut str);
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}
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struct X<'a>(&'a i32);
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impl<'a> X<'a> {
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fn foo(&self) -> *const i64 {
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self.0 as *const _ as *const _
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}
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fn bar(&mut self) -> *const i64 {
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self.0 as *const _ as *const _
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}
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}
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struct Y<'a>(&'a mut i32);
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impl<'a> Y<'a> {
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fn foo(&self) -> *const i64 {
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self.0 as *const _ as *const _
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}
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fn bar(&mut self) -> *const i64 {
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self.0 as *const _ as *const _
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}
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fn baz(&mut self) -> *const i64 {
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self.0 as *mut _ as *mut _
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}
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}
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