blob: 3115ee0ba8e9d7a412b2a0734a5c52ef21c1cfa8 (
plain)
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
|
// SPDX-License-Identifier: GPL-2.0
//! Static assert.
/// Static assert (i.e. compile-time assert).
///
/// Similar to C11 [`_Static_assert`] and C++11 [`static_assert`].
///
/// The feature may be added to Rust in the future: see [RFC 2790].
///
/// [`_Static_assert`]: https://en.cppreference.com/w/c/language/_Static_assert
/// [`static_assert`]: https://en.cppreference.com/w/cpp/language/static_assert
/// [RFC 2790]: https://github.com/rust-lang/rfcs/issues/2790
///
/// # Examples
///
/// ```
/// static_assert!(42 > 24);
/// static_assert!(core::mem::size_of::<u8>() == 1);
///
/// const X: &[u8] = b"bar";
/// static_assert!(X[1] == b'a');
///
/// const fn f(x: i32) -> i32 {
/// x + 2
/// }
/// static_assert!(f(40) == 42);
/// ```
#[macro_export]
macro_rules! static_assert {
($condition:expr) => {
const _: () = core::assert!($condition);
};
}
|