[rustc.git] / vendor / rustix-0.37.22 / src / const_assert.rs

/// A simple `assert` macro that works in `const fn`, for use until the
/// standard `assert` macro works in `const fn`.
///
/// TODO: With Rust 1.58 we can replace this with just `assert!`.
#[allow(unused_macros)]
macro_rules! const_assert {
    ($x:expr) => {
        let b: bool = $x;
        let _ = [()][!b as usize];
    };
}

#[test]
#[allow(clippy::missing_const_for_fn)]
fn test_const_assert() {
    const_assert!(true);
}

#[test]
const fn test_const_assert_in_const_fn() {
    const_assert!(true);
}
Commit	Line	Data
064997fb FG	1	/// A simple `assert` macro that works in `const fn`, for use until the
	2	/// standard `assert` macro works in `const fn`.
	3	///
fe692bf9	4	/// TODO: With Rust 1.58 we can replace this with just `assert!`.
064997fb FG	5	#[allow(unused_macros)]
	6	macro_rules! const_assert {
	7	($x:expr) => {
	8	let b: bool = $x;
	9	let _ = [()][!b as usize];
	10	};
	11	}
	12
	13	#[test]
487cf647	14	#[allow(clippy::missing_const_for_fn)]
064997fb FG	15	fn test_const_assert() {
	16	const_assert!(true);
	17	}
	18
	19	#[test]
	20	const fn test_const_assert_in_const_fn() {
	21	const_assert!(true);
	22	}