1 // SPDX-License-Identifier: GPL-2.0
2
3 //! Build-time error.
4 //!
5 //! This crate provides a [const function][con
6 //! compile-time if executed in [const context
7 //! if not executed at compile time and the op
8 //!
9 //! It is used by `build_assert!` in the kerne
10 //! conditions that could be checked staticall
11 //! Rust yet (e.g. perform some checks in [con
12 //! functions could still be called in the run
13 //!
14 //! For details on constant evaluation in Rust
15 //!
16 //! [const-eval]: https://doc.rust-lang.org/re
17 //! [const-functions]: https://doc.rust-lang.o
18 //! [const-context]: https://doc.rust-lang.org
19
20 #![no_std]
21
22 /// Panics if executed in [const context][cons
23 ///
24 /// [const-context]: https://doc.rust-lang.org
25 #[inline(never)]
26 #[cold]
27 #[export_name = "rust_build_error"]
28 #[track_caller]
29 pub const fn build_error(msg: &'static str) ->
30 panic!("{}", msg);
31 }
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