forked from rust-lang/rust-bindgen
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathderive-hash-struct-with-incomplete-array.rs
115 lines (113 loc) · 3.01 KB
/
derive-hash-struct-with-incomplete-array.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
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
/* automatically generated by rust-bindgen */
#![allow(
dead_code,
non_snake_case,
non_camel_case_types,
non_upper_case_globals
)]
#[repr(C)]
#[derive(Default)]
pub struct __IncompleteArrayField<T>(::std::marker::PhantomData<T>, [T; 0]);
impl<T> __IncompleteArrayField<T> {
#[inline]
pub const fn new() -> Self {
__IncompleteArrayField(::std::marker::PhantomData, [])
}
#[inline]
pub unsafe fn as_ptr(&self) -> *const T {
::std::mem::transmute(self)
}
#[inline]
pub unsafe fn as_mut_ptr(&mut self) -> *mut T {
::std::mem::transmute(self)
}
#[inline]
pub unsafe fn as_slice(&self, len: usize) -> &[T] {
::std::slice::from_raw_parts(self.as_ptr(), len)
}
#[inline]
pub unsafe fn as_mut_slice(&mut self, len: usize) -> &mut [T] {
::std::slice::from_raw_parts_mut(self.as_mut_ptr(), len)
}
}
impl<T> ::std::fmt::Debug for __IncompleteArrayField<T> {
fn fmt(&self, fmt: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
fmt.write_str("__IncompleteArrayField")
}
}
#[repr(C)]
#[derive(Debug, Default)]
pub struct test {
pub a: ::std::os::raw::c_int,
pub zero_length_array: __IncompleteArrayField<::std::os::raw::c_char>,
}
#[test]
fn bindgen_test_layout_test() {
assert_eq!(
::std::mem::size_of::<test>(),
4usize,
concat!("Size of: ", stringify!(test))
);
assert_eq!(
::std::mem::align_of::<test>(),
4usize,
concat!("Alignment of ", stringify!(test))
);
assert_eq!(
unsafe { &(*(::std::ptr::null::<test>())).a as *const _ as usize },
0usize,
concat!("Offset of field: ", stringify!(test), "::", stringify!(a))
);
assert_eq!(
unsafe {
&(*(::std::ptr::null::<test>())).zero_length_array as *const _
as usize
},
4usize,
concat!(
"Offset of field: ",
stringify!(test),
"::",
stringify!(zero_length_array)
)
);
}
#[repr(C)]
#[derive(Debug, Default)]
pub struct test2 {
pub a: ::std::os::raw::c_int,
pub incomplete_array: __IncompleteArrayField<::std::os::raw::c_char>,
}
#[test]
fn bindgen_test_layout_test2() {
assert_eq!(
::std::mem::size_of::<test2>(),
4usize,
concat!("Size of: ", stringify!(test2))
);
assert_eq!(
::std::mem::align_of::<test2>(),
4usize,
concat!("Alignment of ", stringify!(test2))
);
}
#[repr(C)]
#[derive(Debug, Default)]
pub struct test3 {
pub a: ::std::os::raw::c_int,
pub zero_length_array: __IncompleteArrayField<::std::os::raw::c_char>,
pub incomplete_array: __IncompleteArrayField<::std::os::raw::c_char>,
}
#[test]
fn bindgen_test_layout_test3() {
assert_eq!(
::std::mem::size_of::<test3>(),
4usize,
concat!("Size of: ", stringify!(test3))
);
assert_eq!(
::std::mem::align_of::<test3>(),
4usize,
concat!("Alignment of ", stringify!(test3))
);
}