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
|
error[E0106]: missing lifetime specifier
--> $DIR/underscore-lifetime-binders.rs:2:17
|
LL | struct Baz<'a>(&'_ &'a u8);
| ^^ expected named lifetime parameter
|
help: consider using the `'a` lifetime
|
LL | struct Baz<'a>(&'a &'a u8);
| ~~
error[E0637]: `'_` cannot be used here
--> $DIR/underscore-lifetime-binders.rs:4:8
|
LL | fn foo<'_>
| ^^ `'_` is a reserved lifetime name
error[E0637]: `'_` cannot be used here
--> $DIR/underscore-lifetime-binders.rs:10:25
|
LL | fn meh() -> Box<dyn for<'_> Meh<'_>>
| ^^ `'_` is a reserved lifetime name
error[E0106]: missing lifetime specifier
--> $DIR/underscore-lifetime-binders.rs:10:33
|
LL | fn meh() -> Box<dyn for<'_> Meh<'_>>
| ^^ expected named lifetime parameter
|
= help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`, or if you will only have owned values
|
LL | fn meh() -> Box<dyn for<'_> Meh<'static>>
| ~~~~~~~
error[E0106]: missing lifetime specifier
--> $DIR/underscore-lifetime-binders.rs:16:35
|
LL | fn foo2(_: &'_ u8, y: &'_ u8) -> &'_ u8 { y }
| ------ ------ ^^ expected named lifetime parameter
|
= help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from argument 1 or `y`
help: consider introducing a named lifetime parameter
|
LL | fn foo2<'a>(_: &'a u8, y: &'a u8) -> &'a u8 { y }
| ++++ ~~ ~~ ~~
error: lifetime may not live long enough
--> $DIR/underscore-lifetime-binders.rs:16:43
|
LL | fn foo2(_: &'_ u8, y: &'_ u8) -> &'_ u8 { y }
| - ^ returning this value requires that `'1` must outlive `'static`
| |
| let's call the lifetime of this reference `'1`
error: aborting due to 6 previous errors
Some errors have detailed explanations: E0106, E0637.
For more information about an error, try `rustc --explain E0106`.
|
