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// run-rustfix
// aux-build:macro_rules.rs
#![warn(clippy::ptr_as_ptr)]
#![feature(custom_inner_attributes)]
extern crate macro_rules;
macro_rules! cast_it {
($ptr: ident) => {
$ptr.cast::<i32>()
};
}
fn main() {
let ptr: *const u32 = &42_u32;
let mut_ptr: *mut u32 = &mut 42_u32;
let _ = ptr.cast::<i32>();
let _ = mut_ptr.cast::<i32>();
// Make sure the lint can handle the difference in their operator precedences.
unsafe {
let ptr_ptr: *const *const u32 = &ptr;
let _ = (*ptr_ptr).cast::<i32>();
}
// Changes in mutability. Do not lint this.
let _ = ptr as *mut i32;
let _ = mut_ptr as *const i32;
// `pointer::cast` cannot perform unsized coercions unlike `as`. Do not lint this.
let ptr_of_array: *const [u32; 4] = &[1, 2, 3, 4];
let _ = ptr_of_array as *const [u32];
let _ = ptr_of_array as *const dyn std::fmt::Debug;
// Ensure the lint doesn't produce unnecessary turbofish for inferred types.
let _: *const i32 = ptr.cast();
let _: *mut i32 = mut_ptr.cast();
// Make sure the lint is triggered inside a macro
let _ = cast_it!(ptr);
// Do not lint inside macros from external crates
let _ = macro_rules::ptr_as_ptr_cast!(ptr);
}
fn _msrv_1_37() {
#![clippy::msrv = "1.37"]
let ptr: *const u32 = &42_u32;
let mut_ptr: *mut u32 = &mut 42_u32;
// `pointer::cast` was stabilized in 1.38. Do not lint this
let _ = ptr as *const i32;
let _ = mut_ptr as *mut i32;
}
fn _msrv_1_38() {
#![clippy::msrv = "1.38"]
let ptr: *const u32 = &42_u32;
let mut_ptr: *mut u32 = &mut 42_u32;
let _ = ptr.cast::<i32>();
let _ = mut_ptr.cast::<i32>();
}
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