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
|
error: `extern` fn uses type `[u8]`, which is not FFI-safe
--> $DIR/lint-ctypes-94223.rs:4:15
|
LL | pub fn bad(f: extern "C" fn([u8])) {}
| ^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
= help: consider using a raw pointer instead
= note: slices have no C equivalent
note: the lint level is defined here
--> $DIR/lint-ctypes-94223.rs:2:9
|
LL | #![deny(improper_ctypes_definitions)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: `extern` fn uses type `[u8]`, which is not FFI-safe
--> $DIR/lint-ctypes-94223.rs:7:28
|
LL | pub fn bad_twice(f: Result<extern "C" fn([u8]), extern "C" fn([u8])>) {}
| ^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
= help: consider using a raw pointer instead
= note: slices have no C equivalent
error: `extern` fn uses type `[u8]`, which is not FFI-safe
--> $DIR/lint-ctypes-94223.rs:7:49
|
LL | pub fn bad_twice(f: Result<extern "C" fn([u8]), extern "C" fn([u8])>) {}
| ^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
= help: consider using a raw pointer instead
= note: slices have no C equivalent
error: `extern` fn uses type `[u8]`, which is not FFI-safe
--> $DIR/lint-ctypes-94223.rs:11:18
|
LL | struct BadStruct(extern "C" fn([u8]));
| ^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
= help: consider using a raw pointer instead
= note: slices have no C equivalent
error: `extern` fn uses type `[u8]`, which is not FFI-safe
--> $DIR/lint-ctypes-94223.rs:15:7
|
LL | A(extern "C" fn([u8])),
| ^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
= help: consider using a raw pointer instead
= note: slices have no C equivalent
error: `extern` fn uses type `[u8]`, which is not FFI-safe
--> $DIR/lint-ctypes-94223.rs:20:7
|
LL | A(extern "C" fn([u8])),
| ^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
= help: consider using a raw pointer instead
= note: slices have no C equivalent
error: `extern` fn uses type `[u8]`, which is not FFI-safe
--> $DIR/lint-ctypes-94223.rs:24:12
|
LL | type Foo = extern "C" fn([u8]);
| ^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
= help: consider using a raw pointer instead
= note: slices have no C equivalent
error: `extern` fn uses type `FfiUnsafe`, which is not FFI-safe
--> $DIR/lint-ctypes-94223.rs:34:17
|
LL | pub static BAD: extern "C" fn(FfiUnsafe) = f;
| ^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
= note: this struct has unspecified layout
note: the type is defined here
--> $DIR/lint-ctypes-94223.rs:27:1
|
LL | pub struct FfiUnsafe;
| ^^^^^^^^^^^^^^^^^^^^
error: `extern` fn uses type `FfiUnsafe`, which is not FFI-safe
--> $DIR/lint-ctypes-94223.rs:37:30
|
LL | pub static BAD_TWICE: Result<extern "C" fn(FfiUnsafe), extern "C" fn(FfiUnsafe)> = Ok(f);
| ^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
= note: this struct has unspecified layout
note: the type is defined here
--> $DIR/lint-ctypes-94223.rs:27:1
|
LL | pub struct FfiUnsafe;
| ^^^^^^^^^^^^^^^^^^^^
error: `extern` fn uses type `FfiUnsafe`, which is not FFI-safe
--> $DIR/lint-ctypes-94223.rs:37:56
|
LL | pub static BAD_TWICE: Result<extern "C" fn(FfiUnsafe), extern "C" fn(FfiUnsafe)> = Ok(f);
| ^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
= note: this struct has unspecified layout
note: the type is defined here
--> $DIR/lint-ctypes-94223.rs:27:1
|
LL | pub struct FfiUnsafe;
| ^^^^^^^^^^^^^^^^^^^^
error: `extern` fn uses type `FfiUnsafe`, which is not FFI-safe
--> $DIR/lint-ctypes-94223.rs:41:22
|
LL | pub const BAD_CONST: extern "C" fn(FfiUnsafe) = f;
| ^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
= note: this struct has unspecified layout
note: the type is defined here
--> $DIR/lint-ctypes-94223.rs:27:1
|
LL | pub struct FfiUnsafe;
| ^^^^^^^^^^^^^^^^^^^^
error: aborting due to 11 previous errors
|