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