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//@aux-build:proc_macros.rs
#![warn(clippy::ptr_as_ptr)]
#[macro_use]
extern crate proc_macros;
mod issue_11278_a {
#[derive(Debug)]
pub struct T<D: std::fmt::Debug + ?Sized> {
pub p: D,
}
}
mod issue_11278_b {
pub fn f(o: &mut super::issue_11278_a::T<dyn std::fmt::Debug>) -> super::issue_11278_a::T<String> {
// Retain `super`
*unsafe { Box::from_raw(Box::into_raw(Box::new(o)).cast::<super::issue_11278_a::T<String>>()) }
}
}
#[inline_macros]
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 _ = inline!($ptr.cast::<i32>());
// Do not lint inside macros from external crates
let _ = external!($ptr as *const i32);
}
#[clippy::msrv = "1.37"]
fn _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;
}
#[clippy::msrv = "1.38"]
fn _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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