src/test/ui/self/elision/ref-self.rs


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69

// revisions: base nll
// ignore-compare-mode-nll
//[nll] compile-flags: -Z borrowck=mir

#![feature(arbitrary_self_types)]
#![allow(non_snake_case)]

use std::marker::PhantomData;
use std::ops::Deref;
use std::pin::Pin;

struct Struct { }

struct Wrap<T, P>(T, PhantomData<P>);

impl<T, P> Deref for Wrap<T, P> {
    type Target = T;
    fn deref(&self) -> &T { &self.0 }
}

impl Struct {
    // Test using `&self` sugar:

    fn ref_self(&self, f: &u32) -> &u32 {
        f
        //[base]~^ ERROR lifetime mismatch
        //[nll]~^^ ERROR lifetime may not live long enough
    }

    // Test using `&Self` explicitly:

    fn ref_Self(self: &Self, f: &u32) -> &u32 {
        f
        //[base]~^ ERROR lifetime mismatch
        //[nll]~^^ ERROR lifetime may not live long enough
    }

    fn box_ref_Self(self: Box<&Self>, f: &u32) -> &u32 {
        f
        //[base]~^ ERROR lifetime mismatch
        //[nll]~^^ ERROR lifetime may not live long enough
    }

    fn pin_ref_Self(self: Pin<&Self>, f: &u32) -> &u32 {
        f
        //[base]~^ ERROR lifetime mismatch
        //[nll]~^^ ERROR lifetime may not live long enough
    }

    fn box_box_ref_Self(self: Box<Box<&Self>>, f: &u32) -> &u32 {
        f
        //[base]~^ ERROR lifetime mismatch
        //[nll]~^^ ERROR lifetime may not live long enough
    }

    fn box_pin_ref_Self(self: Box<Pin<&Self>>, f: &u32) -> &u32 {
        f
        //[base]~^ ERROR lifetime mismatch
        //[nll]~^^ ERROR lifetime may not live long enough
    }

    fn wrap_ref_Self_Self(self: Wrap<&Self, Self>, f: &u8) -> &u8 {
        f
        //[base]~^ ERROR lifetime mismatch
        //[nll]~^^ ERROR lifetime may not live long enough
    }
}

fn main() { }