mirror of
https://github.com/torvalds/linux.git
synced 2025-11-03 01:59:51 +02:00
0f595bab9d
Add the `build_error!` and `build_assert!` macros which leverage
the previously introduced `build_error` crate. Do so in a new
module, called `build_assert`.
The former fails the build if the code path calling it can possibly
be executed. The latter asserts that a boolean expression is `true`
at compile time.
In particular, `build_assert!` can be used in some contexts where
`static_assert!` cannot:
fn f1<const N: usize>() {
static_assert!(N > 1);` // Error.
build_assert!(N > 1); // Build-time check.
assert!(N > 1); // Run-time check.
}
#[inline]
fn f2(n: usize) {
static_assert!(n > 1); // Error.
build_assert!(n > 1); // Build-time check.
assert!(n > 1); // Run-time check.
}
Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Wei Liu <wei.liu@kernel.org>
[Reworded, adapted for upstream and applied latest changes]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
28 lines
616 B
Rust
28 lines
616 B
Rust
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
//! The `kernel` prelude.
|
|
//!
|
|
//! These are the most common items used by Rust code in the kernel,
|
|
//! intended to be imported by all Rust code, for convenience.
|
|
//!
|
|
//! # Examples
|
|
//!
|
|
//! ```
|
|
//! use kernel::prelude::*;
|
|
//! ```
|
|
|
|
pub use core::pin::Pin;
|
|
|
|
pub use alloc::{boxed::Box, vec::Vec};
|
|
|
|
pub use macros::{module, vtable};
|
|
|
|
pub use super::build_assert;
|
|
|
|
pub use super::{dbg, pr_alert, pr_crit, pr_debug, pr_emerg, pr_err, pr_info, pr_notice, pr_warn};
|
|
|
|
pub use super::static_assert;
|
|
|
|
pub use super::error::{code::*, Error, Result};
|
|
|
|
pub use super::{str::CStr, ThisModule};
|