rust/src/test/ui/consts/const-eval/auxiliary/stability.rs

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// Crate that exports a const fn. Used for testing cross-crate.
#![crate_type="rlib"]
#![stable(feature = "rust1", since = "1.0.0")]
#![feature(const_fn)]
#![feature(staged_api)]
#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_unstable(feature="foo", issue = "0")]
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pub const fn foo() -> u32 { 42 }