mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-10 15:14:29 +00:00
116 lines
3 KiB
Rust
116 lines
3 KiB
Rust
#![warn(clippy::ref_as_ptr)]
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#![allow(clippy::unnecessary_mut_passed)]
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fn f<T>(_: T) {}
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fn main() {
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f(std::ptr::from_ref(&1u8));
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f(std::ptr::from_ref::<u32>(&2u32));
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f(std::ptr::from_ref::<f64>(&3.0f64));
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f(std::ptr::from_ref(&4) as *const f32);
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f(std::ptr::from_ref::<f32>(&5.0f32) as *const u32);
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f(std::ptr::from_ref(&mut 6u8));
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f(std::ptr::from_ref::<u32>(&mut 7u32));
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f(std::ptr::from_ref::<f64>(&mut 8.0f64));
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f(std::ptr::from_ref(&mut 9) as *const f32);
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f(std::ptr::from_ref::<f32>(&mut 10.0f32) as *const u32);
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f(std::ptr::from_mut(&mut 11u8));
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f(std::ptr::from_mut::<u32>(&mut 12u32));
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f(std::ptr::from_mut::<f64>(&mut 13.0f64));
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f(std::ptr::from_mut(&mut 14) as *const f32);
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f(std::ptr::from_mut::<f32>(&mut 15.0f32) as *const u32);
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f(std::ptr::from_ref(&1u8));
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f(std::ptr::from_ref::<u32>(&2u32));
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f(std::ptr::from_ref::<f64>(&3.0f64));
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f(std::ptr::from_ref(&4) as *const f32);
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f(std::ptr::from_ref::<f32>(&5.0f32) as *const u32);
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let val = 1;
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f(std::ptr::from_ref(&val));
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f(std::ptr::from_ref::<i32>(&val));
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f(std::ptr::from_ref(&val) as *const f32);
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f(std::ptr::from_ref::<i32>(&val) as *const f64);
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let mut val: u8 = 2;
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f(std::ptr::from_mut::<u8>(&mut val));
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f(std::ptr::from_mut(&mut val));
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f(std::ptr::from_ref::<u8>(&mut val));
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f(std::ptr::from_ref(&mut val));
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f(std::ptr::from_ref::<u8>(&mut val) as *const f64);
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f::<*const Option<u8>>(std::ptr::from_ref(&mut val) as *const _);
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f(std::ptr::from_ref::<[usize; 7]>(&std::array::from_fn(|i| i * i)));
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f(std::ptr::from_ref::<[usize; 8]>(&mut std::array::from_fn(|i| i * i)));
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f(std::ptr::from_mut::<[usize; 9]>(&mut std::array::from_fn(|i| i * i)));
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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(std::ptr::from_ref::<i32>(val));
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f(std::ptr::from_mut::<i32>(mut_val));
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}
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fn foo(val: &[u8]) {
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f(std::ptr::from_ref(val));
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f(std::ptr::from_ref::<[u8]>(val));
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}
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fn bar(val: &mut str) {
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f(std::ptr::from_mut(val));
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f(std::ptr::from_mut::<str>(val));
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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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std::ptr::from_ref(self.0) as *const _
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}
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fn bar(&mut self) -> *const i64 {
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std::ptr::from_ref(self.0) 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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std::ptr::from_ref(self.0) as *const _
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}
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fn bar(&mut self) -> *const i64 {
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std::ptr::from_ref(self.0) as *const _
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}
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fn baz(&mut self) -> *const i64 {
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std::ptr::from_mut(self.0) as *mut _
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}
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}
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