42 lines
1.2 KiB
Rust
42 lines
1.2 KiB
Rust
#![allow(unused)]
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#![warn(clippy::as_ptr_cast_mut)]
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#![allow(clippy::wrong_self_convention, clippy::unnecessary_cast)]
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//@no-rustfix
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struct MutPtrWrapper(Vec<u8>);
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impl MutPtrWrapper {
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fn as_ptr(&mut self) -> *const u8 {
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self.0.as_mut_ptr() as *const u8
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}
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}
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struct Covariant<T>(*const T);
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impl<T> Covariant<T> {
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fn as_ptr(self) -> *const T {
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self.0
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}
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}
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fn main() {
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let mut string = String::new();
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let _ = string.as_ptr() as *mut u8;
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//~^ ERROR: casting the result of `as_ptr` to *mut u8
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//~| NOTE: `-D clippy::as-ptr-cast-mut` implied by `-D warnings`
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let _: *mut i8 = string.as_ptr() as *mut _;
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//~^ ERROR: casting the result of `as_ptr` to *mut i8
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let _ = string.as_ptr() as *const i8;
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let _ = string.as_mut_ptr();
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let _ = string.as_mut_ptr() as *mut u8;
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let _ = string.as_mut_ptr() as *const u8;
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let nn = std::ptr::NonNull::new(4 as *mut u8).unwrap();
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let _ = nn.as_ptr() as *mut u8;
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let mut wrap = MutPtrWrapper(Vec::new());
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let _ = wrap.as_ptr() as *mut u8;
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let mut local = 4;
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let ref_with_write_perm = Covariant(std::ptr::addr_of_mut!(local) as *const _);
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let _ = ref_with_write_perm.as_ptr() as *mut u8;
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}
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