Re: [PATCH 2/2] rust: add `const_assert!` macro

[Benno Lossin]

On Fri Feb 6, 2026 at 6:12 PM CET, Gary Guo wrote:
> +/// Assertion during constant evaluation.
> +///
> +/// This is a more powerful version of `static_assert` that can refer to generics inside functions
> +/// or implementation blocks. However, it also have a limitation where it can only appear in places
> +/// where statements can appear; for example, you cannot use it as an item in the module.
> +///
> +/// [`static_assert!`] should be preferred where possible.
> +///
> +/// # Examples
> +///
> +/// When the condition refers to generic parameters [`static_assert!`] cannot be used.
> +/// Use `const_assert!` in this scenario.
> +/// ```
> +/// fn foo<const N: usize>() {
> +///     // `static_assert!(N > 1);` is not allowed
> +///     const_assert!(N > 1); // Compile-time check
> +///     build_assert!(N > 1); // Build-time check

I think having "Build-time check" here is a bit confusing, how about we
change it to "Link-time check"? Since a "Compile-time check" also is
done at "Build-time"

Cheers,
Benno