Static INTEGER_TO_PTR_TRANSMUTES 

pub static INTEGER_TO_PTR_TRANSMUTES: &Lint

The integer_to_ptr_transmutes lint detects integer to pointer transmutes where the resulting pointers are undefined behavior to dereference.

Example

fn foo(a: usize) -> *const u8 {
   unsafe {
       std::mem::transmute::<usize, *const u8>(a)
   }
}

{{produces}}

Explanation

Any attempt to use the resulting pointers are undefined behavior as the resulting pointers won’t have any provenance.

Alternatively, std::ptr::with_exposed_provenance should be used, as they do not carry the provenance requirement. If wanting to create pointers without provenance std::ptr::without_provenance should be used instead.

See std::mem::transmute in the reference for more details.