Use of raw pointer as self parameter

[eefriedman]

Testcase:

struct S(String);
impl S {
    fn f(self: *mut S) -> String { self.0 } 
}
fn main() { S("".to_owned()).f(); }

This somehow compiles and runs without any errors.

I'm not sure how exactly this is getting interpreted by the compiler, but it seems dubious at best.

[Veedrac]

self is of type S inside the function, and seems to be moved "correctly".

s.f();
s.f();

gives

<anon>:8:5: 8:6 error: use of moved value: `s`
<anon>:8     s.f();

whilst

fn f(self: *mut S) { let _: () = self; }

gives

<anon>:3:38: 3:42 error: mismatched types:
 expected `()`,
    found `S`