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
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
error: lifetime may not live long enough
--> $DIR/variadic-ffi-4.rs:8:5
|
LL | pub unsafe extern "C" fn no_escape0<'f>(_: usize, ap: ...) -> VaListImpl<'f> {
| -- -- has type `VaListImpl<'1>`
| |
| lifetime `'f` defined here
LL | ap
| ^^ function was supposed to return data with lifetime `'1` but it is returning data with lifetime `'f`
|
= note: requirement occurs because of the type `VaListImpl<'_>`, which makes the generic argument `'_` invariant
= note: the struct `VaListImpl<'f>` is invariant over the parameter `'f`
= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
error: lifetime may not live long enough
--> $DIR/variadic-ffi-4.rs:8:5
|
LL | pub unsafe extern "C" fn no_escape0<'f>(_: usize, ap: ...) -> VaListImpl<'f> {
| -- -- has type `VaListImpl<'1>`
| |
| lifetime `'f` defined here
LL | ap
| ^^ function was supposed to return data with lifetime `'f` but it is returning data with lifetime `'1`
|
= note: requirement occurs because of the type `VaListImpl<'_>`, which makes the generic argument `'_` invariant
= note: the struct `VaListImpl<'f>` is invariant over the parameter `'f`
= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
error: lifetime may not live long enough
--> $DIR/variadic-ffi-4.rs:14:5
|
LL | pub unsafe extern "C" fn no_escape1(_: usize, ap: ...) -> VaListImpl<'static> {
| -- has type `VaListImpl<'1>`
LL | ap
| ^^ returning this value requires that `'1` must outlive `'static`
|
= note: requirement occurs because of the type `VaListImpl<'_>`, which makes the generic argument `'_` invariant
= note: the struct `VaListImpl<'f>` is invariant over the parameter `'f`
= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
error: lifetime may not live long enough
--> $DIR/variadic-ffi-4.rs:18:31
|
LL | let _ = ap.with_copy(|ap| ap);
| --- ^^ returning this value requires that `'1` must outlive `'2`
| | |
| | return type of closure is VaList<'2, '_>
| has type `VaList<'1, '_>`
error: lifetime may not live long enough
--> $DIR/variadic-ffi-4.rs:22:5
|
LL | pub unsafe extern "C" fn no_escape3(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
| ------- ------- has type `VaListImpl<'2>`
| |
| has type `&mut VaListImpl<'1>`
LL | *ap0 = ap1;
| ^^^^ assignment requires that `'1` must outlive `'2`
|
= note: requirement occurs because of the type `VaListImpl<'_>`, which makes the generic argument `'_` invariant
= note: the struct `VaListImpl<'f>` is invariant over the parameter `'f`
= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
error: lifetime may not live long enough
--> $DIR/variadic-ffi-4.rs:22:5
|
LL | pub unsafe extern "C" fn no_escape3(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
| ------- ------- has type `VaListImpl<'2>`
| |
| has type `&mut VaListImpl<'1>`
LL | *ap0 = ap1;
| ^^^^ assignment requires that `'2` must outlive `'1`
|
= note: requirement occurs because of the type `VaListImpl<'_>`, which makes the generic argument `'_` invariant
= note: the struct `VaListImpl<'f>` is invariant over the parameter `'f`
= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
error: lifetime may not live long enough
--> $DIR/variadic-ffi-4.rs:28:5
|
LL | pub unsafe extern "C" fn no_escape4(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
| ------- ------- has type `VaListImpl<'2>`
| |
| has type `&mut VaListImpl<'1>`
LL | ap0 = &mut ap1;
| ^^^^^^^^^^^^^^ assignment requires that `'1` must outlive `'2`
|
= note: requirement occurs because of a mutable reference to `VaListImpl<'_>`
= note: mutable references are invariant over their type parameter
= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
error: lifetime may not live long enough
--> $DIR/variadic-ffi-4.rs:28:5
|
LL | pub unsafe extern "C" fn no_escape4(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
| ------- ------- has type `VaListImpl<'2>`
| |
| has type `&mut VaListImpl<'1>`
LL | ap0 = &mut ap1;
| ^^^^^^^^^^^^^^ assignment requires that `'2` must outlive `'1`
|
= note: requirement occurs because of a mutable reference to `VaListImpl<'_>`
= note: mutable references are invariant over their type parameter
= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
error[E0597]: `ap1` does not live long enough
--> $DIR/variadic-ffi-4.rs:28:11
|
LL | pub unsafe extern "C" fn no_escape4(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
| - ------- binding `ap1` declared here
| |
| let's call the lifetime of this reference `'3`
LL | ap0 = &mut ap1;
| ------^^^^^^^^
| | |
| | borrowed value does not live long enough
| assignment requires that `ap1` is borrowed for `'3`
...
LL | }
| - `ap1` dropped here while still borrowed
error: lifetime may not live long enough
--> $DIR/variadic-ffi-4.rs:35:12
|
LL | pub unsafe extern "C" fn no_escape5(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
| ------- ------- has type `VaListImpl<'2>`
| |
| has type `&mut VaListImpl<'1>`
LL | *ap0 = ap1.clone();
| ^^^^^^^^^^^ argument requires that `'1` must outlive `'2`
|
= note: requirement occurs because of the type `VaListImpl<'_>`, which makes the generic argument `'_` invariant
= note: the struct `VaListImpl<'f>` is invariant over the parameter `'f`
= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
error: lifetime may not live long enough
--> $DIR/variadic-ffi-4.rs:35:12
|
LL | pub unsafe extern "C" fn no_escape5(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
| ------- ------- has type `VaListImpl<'2>`
| |
| has type `&mut VaListImpl<'1>`
LL | *ap0 = ap1.clone();
| ^^^^^^^^^^^ argument requires that `'2` must outlive `'1`
|
= note: requirement occurs because of the type `VaListImpl<'_>`, which makes the generic argument `'_` invariant
= note: the struct `VaListImpl<'f>` is invariant over the parameter `'f`
= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
error: aborting due to 11 previous errors
For more information about this error, try `rustc --explain E0597`.
|
