ring/
c.rs

1// Copyright 2016-2019 Brian Smith.
2//
3// Permission to use, copy, modify, and/or distribute this software for any
4// purpose with or without fee is hereby granted, provided that the above
5// copyright notice and this permission notice appear in all copies.
6//
7// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
8// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
10// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
14
15//! C types.
16//!
17//! Avoid using the `libc` crate to get C types since `libc` doesn't support
18//! all the targets we need to support. It turns out that the few types we need
19//! are all uniformly defined on the platforms we care about. This will
20//! probably change if/when we support 16-bit platforms or platforms where
21//! `usize` and `uintptr_t` are different sizes.
22
23// Keep in sync with the checks in base.h that verify these assumptions.
24
25pub(crate) type int = i32;
26pub(crate) type uint = u32;
27pub(crate) type size_t = usize;
28
29#[cfg(all(test, any(unix, windows)))]
30mod tests {
31    use crate::c;
32
33    #[test]
34    fn test_libc_compatible() {
35        {
36            let x: c::int = 1;
37            let _x: libc::c_int = x;
38        }
39
40        {
41            let x: c::uint = 1;
42            let _x: libc::c_uint = x;
43        }
44
45        {
46            let x: c::size_t = 1;
47            let _x: libc::size_t = x;
48            let _x: usize = x;
49        }
50    }
51}
ring/c.rs

ring/
c.rs
