1 // Copyright 2018 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 #![unstable(feature = "humans",
12 reason = "who ever let humans program computers,
13 we're apparently really bad at it",
16 #![feature(rustc_const_unstable, const_fn)]
17 #![feature(staged_api)]
19 #[stable(feature = "rust1", since = "1.0.0")]
20 #[rustc_const_unstable(feature="foo")]
21 const fn foo() -> u32 { 42 }
23 fn meh() -> u32 { 42 }
25 const fn bar() -> u32 { foo() } //~ ERROR `foo` is not yet stable as a const fn
28 let _: &'static u32 = &foo(); //~ ERROR does not live long enough
32 let _: &'static u32 = &meh(); //~ ERROR does not live long enough
33 let x: &'static _ = &std::time::Duration::from_millis(42).subsec_millis();