4b478a5731
which checks for `as` casts between raw pointers without changing its mutability and suggest replacing it with `pointer::cast`.
31 lines
904 B
Rust
31 lines
904 B
Rust
// run-rustfix
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#![warn(clippy::ptr_as_ptr)]
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fn main() {
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let ptr: *const u32 = &42_u32;
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let mut_ptr: *mut u32 = &mut 42_u32;
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let _ = ptr as *const i32;
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let _ = mut_ptr as *mut i32;
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// Make sure the lint can handle the difference in their operator precedences.
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unsafe {
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let ptr_ptr: *const *const u32 = &ptr;
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let _ = *ptr_ptr as *const i32;
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}
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// Changes in mutability. Do not lint this.
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let _ = ptr as *mut i32;
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let _ = mut_ptr as *const i32;
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// `pointer::cast` cannot perform unsized coercions unlike `as`. Do not lint this.
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let ptr_of_array: *const [u32; 4] = &[1, 2, 3, 4];
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let _ = ptr_of_array as *const [u32];
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let _ = ptr_of_array as *const dyn std::fmt::Debug;
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// Ensure the lint doesn't produce unnecessary turbofish for inferred types.
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let _: *const i32 = ptr as *const _;
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let _: *mut i32 = mut_ptr as _;
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}
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