tests/ui/consts/const-eval/auxiliary/stability.rs

// Crate that exports a const fn. Used for testing cross-crate.

#![crate_type = "rlib"]
#![stable(feature = "rust1", since = "1.0.0")]
#![feature(staged_api)]

#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_unstable(feature = "foo", issue = "none")]
pub const fn foo() -> u32 {
    42
}